CA1308321C - Shielded safety syringe - Google Patents
Shielded safety syringeInfo
- Publication number
- CA1308321C CA1308321C CA000564995A CA564995A CA1308321C CA 1308321 C CA1308321 C CA 1308321C CA 000564995 A CA000564995 A CA 000564995A CA 564995 A CA564995 A CA 564995A CA 1308321 C CA1308321 C CA 1308321C
- Authority
- CA
- Canada
- Prior art keywords
- inner cylinder
- outer sleeve
- needle
- series
- syringe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
- A61M5/3205—Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles
- A61M5/321—Means for protection against accidental injuries by used needles
- A61M5/3243—Means for protection against accidental injuries by used needles being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel
- A61M5/3271—Means for protection against accidental injuries by used needles being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel with guiding tracks for controlled sliding of needle protective sleeve from needle exposing to needle covering position
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/28—Syringe ampoules or carpules, i.e. ampoules or carpules provided with a needle
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150015—Source of blood
- A61B5/15003—Source of blood for venous or arterial blood
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150206—Construction or design features not otherwise provided for; manufacturing or production; packages; sterilisation of piercing element, piercing device or sampling device
- A61B5/150259—Improved gripping, e.g. with high friction pattern or projections on the housing surface or an ergonometric shape
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150374—Details of piercing elements or protective means for preventing accidental injuries by such piercing elements
- A61B5/150381—Design of piercing elements
- A61B5/150389—Hollow piercing elements, e.g. canulas, needles, for piercing the skin
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150374—Details of piercing elements or protective means for preventing accidental injuries by such piercing elements
- A61B5/150381—Design of piercing elements
- A61B5/150473—Double-ended needles, e.g. used with pre-evacuated sampling tubes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150374—Details of piercing elements or protective means for preventing accidental injuries by such piercing elements
- A61B5/150381—Design of piercing elements
- A61B5/150473—Double-ended needles, e.g. used with pre-evacuated sampling tubes
- A61B5/150496—Details of construction of hub, i.e. element used to attach the double-ended needle to a piercing device or sampling device
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150374—Details of piercing elements or protective means for preventing accidental injuries by such piercing elements
- A61B5/150534—Design of protective means for piercing elements for preventing accidental needle sticks, e.g. shields, caps, protectors, axially extensible sleeves, pivotable protective sleeves
- A61B5/150572—Pierceable protectors, e.g. shields, caps, sleeves or films, e.g. for hygienic purposes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150374—Details of piercing elements or protective means for preventing accidental injuries by such piercing elements
- A61B5/150534—Design of protective means for piercing elements for preventing accidental needle sticks, e.g. shields, caps, protectors, axially extensible sleeves, pivotable protective sleeves
- A61B5/150633—Protective sleeves which are axially extensible, e.g. sleeves connected to, or integrated in, the piercing or driving device; pivotable protective sleeves
- A61B5/150641—Protective sleeves which are axially extensible, e.g. sleeves connected to, or integrated in, the piercing or driving device; pivotable protective sleeves comprising means to impede repositioning of protection sleeve from covering to uncovering position
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150374—Details of piercing elements or protective means for preventing accidental injuries by such piercing elements
- A61B5/150534—Design of protective means for piercing elements for preventing accidental needle sticks, e.g. shields, caps, protectors, axially extensible sleeves, pivotable protective sleeves
- A61B5/150694—Procedure for removing protection means at the time of piercing
- A61B5/150717—Procedure for removing protection means at the time of piercing manually removed
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150732—Needle holders, for instance for holding the needle by the hub, used for example with double-ended needle and pre-evacuated tube
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/153—Devices specially adapted for taking samples of venous or arterial blood, e.g. with syringes
- A61B5/154—Devices using pre-evacuated means
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
- A61M5/3205—Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles
- A61M5/321—Means for protection against accidental injuries by used needles
- A61M5/3243—Means for protection against accidental injuries by used needles being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/50—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests having means for preventing re-use, or for indicating if defective, used, tampered with or unsterile
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
- A61M5/3202—Devices for protection of the needle before use, e.g. caps
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
- A61M5/3205—Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles
- A61M5/321—Means for protection against accidental injuries by used needles
- A61M5/3243—Means for protection against accidental injuries by used needles being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel
- A61M5/3271—Means for protection against accidental injuries by used needles being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel with guiding tracks for controlled sliding of needle protective sleeve from needle exposing to needle covering position
- A61M5/3272—Means for protection against accidental injuries by used needles being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel with guiding tracks for controlled sliding of needle protective sleeve from needle exposing to needle covering position having projections following labyrinth paths
Abstract
SHIELDED SAFETY SYRINGE
ABSTRACT OF THE DISCLOSURE
A disposable syringe (1, 130 or 160) having particular application to vacuum tube phlebotomy and comprising respective inner (2, 132 or 162) and outer (4 or 134) needle carrying and protective cylinders which are coaxially aligned and axially extensible relative to one another. The inner and outer cylinders may be locked in a retracted position, whereby a hypodermic needle (22 or 138) is accessible for drawing blood samples from the patient to an evacuated tube (52) at the inner cylinder. After the last blood sample has been taken, the inner and outer cylinders may be locked in an axially extended position, whereby the hypodermic needle is completely surrounded and shielded by the outer protective cylinder so as to permit the safe handling of the syringe while avoiding an accidental needle strike and the possible spread of a contagious disease.
ABSTRACT OF THE DISCLOSURE
A disposable syringe (1, 130 or 160) having particular application to vacuum tube phlebotomy and comprising respective inner (2, 132 or 162) and outer (4 or 134) needle carrying and protective cylinders which are coaxially aligned and axially extensible relative to one another. The inner and outer cylinders may be locked in a retracted position, whereby a hypodermic needle (22 or 138) is accessible for drawing blood samples from the patient to an evacuated tube (52) at the inner cylinder. After the last blood sample has been taken, the inner and outer cylinders may be locked in an axially extended position, whereby the hypodermic needle is completely surrounded and shielded by the outer protective cylinder so as to permit the safe handling of the syringe while avoiding an accidental needle strike and the possible spread of a contagious disease.
Description
13~3Z~
~HIELDED SAFETY SYRINGE
TECHNI CAL FI EL D
This invention rela~es to a disposable syringe having particular application to vacuum tube phlebotomy and comprising means by which to shield an associated hypodermic needle to reduce the possibility of an accidentalr and possibly life threatening, needle strike and the spread of contagious disease.
~3~
BACKGROUND A~T
Hypodermic syringes are used for a variety of purposes. ~y way of a first example, the syringe may be used for vacuum tube phlebotomy, where samples of the patient's blood are successively drawn into respective evacua~ed tubes by way of a double ended hypodermic needleO In a second example, the syringe may be used to expulse fluid medication to a patient by way of a single ended hypodermic needle and a conventional injection procedure. In either example, the syringe may be use~ to teeat a patient having a communicable disease. Prior to disposal of the syringe, the hypodermic needle thereof is sometimes broken to prevent reuse. Health care workers are especially susceptible to accidental and potentially in~ectious needle strikes due to the careless handling or breaking of the needle and disposing of the syringe after use. The resulting mini-accidents caused by an accidental needle strike typically require a blood test for such diseases as AI~S and hepatitis. The -corresponding cost and inefficiency of testing health care workers who have received an inadvertent needle strike result in considerable waste, which may particularly damaging to a health care facility which is striving for economy.
The following United States patents provide examples of syringes having a hypodermic needle which may be shielded after use to prevent an accidental needle ::.
strike:
~HIELDED SAFETY SYRINGE
TECHNI CAL FI EL D
This invention rela~es to a disposable syringe having particular application to vacuum tube phlebotomy and comprising means by which to shield an associated hypodermic needle to reduce the possibility of an accidentalr and possibly life threatening, needle strike and the spread of contagious disease.
~3~
BACKGROUND A~T
Hypodermic syringes are used for a variety of purposes. ~y way of a first example, the syringe may be used for vacuum tube phlebotomy, where samples of the patient's blood are successively drawn into respective evacua~ed tubes by way of a double ended hypodermic needleO In a second example, the syringe may be used to expulse fluid medication to a patient by way of a single ended hypodermic needle and a conventional injection procedure. In either example, the syringe may be use~ to teeat a patient having a communicable disease. Prior to disposal of the syringe, the hypodermic needle thereof is sometimes broken to prevent reuse. Health care workers are especially susceptible to accidental and potentially in~ectious needle strikes due to the careless handling or breaking of the needle and disposing of the syringe after use. The resulting mini-accidents caused by an accidental needle strike typically require a blood test for such diseases as AI~S and hepatitis. The -corresponding cost and inefficiency of testing health care workers who have received an inadvertent needle strike result in considerable waste, which may particularly damaging to a health care facility which is striving for economy.
The following United States patents provide examples of syringes having a hypodermic needle which may be shielded after use to prevent an accidental needle ::.
strike:
2,571,653 October 16, 1951 4r356r822 November 2~ 1982 4~425~120 January 10, 1984 4r631rO57 December 23, 1986 ~3~
~;UMMARY OF T~E INVENTION
In general terms, a disposable syringe is disclosed having particular application to vacu~M tube phlebotomy. The syringe co~prises an inner hypodermic needle carrying syringe and an outer protective sleeve which are coaxially aligned and axially extensible relative to one another. That is, the inner cylinder and outer sleeve may be locked in a retracted position, whereby the needle is accessible for drawing blood Erom the patient to an evacuated phlebotomy tube at the inner cylinder. The inner cylinder and o~ter sleeve may also be locked in an axially extended position, whereby the needle is completely surrounded and shielded by the outer sleeve to assure safe handling of the syringe while avoidiny an accidental needle strike and the possible spread of a contagious disease.
Thus, according to the invention there is provided a shielded syringe assembly characterized by an inner syringe cylinder having an open proximal end and a substantially closed distal end, a hypodermic needle supported at and extending outwardly from said distal end, and an outer protective sleeve having an open proximal end and an opening in a substantially closed distal end, said outer sleeve coaxially aligned with and axially advanceable relative to said inner cylinder from a retracted position, where said needle projects outwardly through the opening in said sleeve, to an extended position, where said needle is located within and completely surrounded by said sleeve, t"
~3~B~
~a said syringe assembly being further characterized by:
said inner cylinder having at least one ramp and one stop spaced axially from one another; and said outer sleeve having a lip located adjacenk to the open proximal end thereof;
the continuous axial advancement of said outer sleeve from the retracted position to the extended position causing said lip to ride up the ramp of said inner cylinder and into the space between said ramp and said stop to thereby lock said outer sleeve in the extended position relative to said inner cylinder with said needle shielded by said outer sleeve.
In a first embodiment of the invention, a plurality of longitudinally extending ribs and stops extend around the exterior of the inner cylinder. The stops are spaced distally from and interspersed between successive pairs of ribs. A lip is formed around the proximal end of the outer sleeve. The outer sleeve is ~3~tB~
advanced axia~ly relative to the inner cylinder from the retracted to the extended position, such that the lip of the outer sleeve rides up and over the fins for receipt within the spaces between the ribs and stops.
A sel-locking feature is established when the lip of the outer cylinder is received between the ribs and stops of the inner cylinder to prevent the detachment of the outer sleeve from the inner cylinder and a return of the outer sleeve to the retracted position~
In a second embodiment, proximal and distal grooves are formed in and around the periphery of the inner cylinder. Each of a pair of spring-like lockiny members includes an oppositely extending arm and leg -which are hingedly connected to a respective pivot at the proximal end of the outer sleeve~ The inner cylinder and outer sleeve are locked in the retracted position when the legs of the locking members are received in the proximal groove of the inner cylinder.
Equal and opposite compressive forces are applied to the arms of the locking members to cause the legs thereof to rotate out of the proximal groove in the inner cylinder. The outer sleeve is then ~3~i~q~
axially advanced relative to the inner cylinder from the retracted to the extended position. A self-locking feature is established when the normal bias of the spring~like locking members automatically rotates the respective legs thereof into the distal groove of the inner cylinder to prevent the detachment of the outer sleeve from the inner cylinder.
In a third embodiment, a plurality of longitudinally aligned, spiraling grooves are formed in the inner cylinder~ A corresponding plurality of raised bumps extend radially inward from the outer sleeve. The inner cylinder and outer sleeve are locked in the retracted position when the bumps of the outer sleeve are received at the proximal ends of respective grooves in the inner cylinder. The inner cylinder is axially advanced relative to the outer sleeve from the retracted to the extended position, such that the bumps of the outer sleeve ride through the spiraling grooves of the inner cylinder to cause the inner cylinder to rotate. A self-locking feature is established when the bumps of the outer sleeve are received at the distal ends of the spiraling grooves to prevent the detachment of the inner cylinder from the outer sleeve.
~;UMMARY OF T~E INVENTION
In general terms, a disposable syringe is disclosed having particular application to vacu~M tube phlebotomy. The syringe co~prises an inner hypodermic needle carrying syringe and an outer protective sleeve which are coaxially aligned and axially extensible relative to one another. That is, the inner cylinder and outer sleeve may be locked in a retracted position, whereby the needle is accessible for drawing blood Erom the patient to an evacuated phlebotomy tube at the inner cylinder. The inner cylinder and o~ter sleeve may also be locked in an axially extended position, whereby the needle is completely surrounded and shielded by the outer sleeve to assure safe handling of the syringe while avoidiny an accidental needle strike and the possible spread of a contagious disease.
Thus, according to the invention there is provided a shielded syringe assembly characterized by an inner syringe cylinder having an open proximal end and a substantially closed distal end, a hypodermic needle supported at and extending outwardly from said distal end, and an outer protective sleeve having an open proximal end and an opening in a substantially closed distal end, said outer sleeve coaxially aligned with and axially advanceable relative to said inner cylinder from a retracted position, where said needle projects outwardly through the opening in said sleeve, to an extended position, where said needle is located within and completely surrounded by said sleeve, t"
~3~B~
~a said syringe assembly being further characterized by:
said inner cylinder having at least one ramp and one stop spaced axially from one another; and said outer sleeve having a lip located adjacenk to the open proximal end thereof;
the continuous axial advancement of said outer sleeve from the retracted position to the extended position causing said lip to ride up the ramp of said inner cylinder and into the space between said ramp and said stop to thereby lock said outer sleeve in the extended position relative to said inner cylinder with said needle shielded by said outer sleeve.
In a first embodiment of the invention, a plurality of longitudinally extending ribs and stops extend around the exterior of the inner cylinder. The stops are spaced distally from and interspersed between successive pairs of ribs. A lip is formed around the proximal end of the outer sleeve. The outer sleeve is ~3~tB~
advanced axia~ly relative to the inner cylinder from the retracted to the extended position, such that the lip of the outer sleeve rides up and over the fins for receipt within the spaces between the ribs and stops.
A sel-locking feature is established when the lip of the outer cylinder is received between the ribs and stops of the inner cylinder to prevent the detachment of the outer sleeve from the inner cylinder and a return of the outer sleeve to the retracted position~
In a second embodiment, proximal and distal grooves are formed in and around the periphery of the inner cylinder. Each of a pair of spring-like lockiny members includes an oppositely extending arm and leg -which are hingedly connected to a respective pivot at the proximal end of the outer sleeve~ The inner cylinder and outer sleeve are locked in the retracted position when the legs of the locking members are received in the proximal groove of the inner cylinder.
Equal and opposite compressive forces are applied to the arms of the locking members to cause the legs thereof to rotate out of the proximal groove in the inner cylinder. The outer sleeve is then ~3~i~q~
axially advanced relative to the inner cylinder from the retracted to the extended position. A self-locking feature is established when the normal bias of the spring~like locking members automatically rotates the respective legs thereof into the distal groove of the inner cylinder to prevent the detachment of the outer sleeve from the inner cylinder.
In a third embodiment, a plurality of longitudinally aligned, spiraling grooves are formed in the inner cylinder~ A corresponding plurality of raised bumps extend radially inward from the outer sleeve. The inner cylinder and outer sleeve are locked in the retracted position when the bumps of the outer sleeve are received at the proximal ends of respective grooves in the inner cylinder. The inner cylinder is axially advanced relative to the outer sleeve from the retracted to the extended position, such that the bumps of the outer sleeve ride through the spiraling grooves of the inner cylinder to cause the inner cylinder to rotate. A self-locking feature is established when the bumps of the outer sleeve are received at the distal ends of the spiraling grooves to prevent the detachment of the inner cylinder from the outer sleeve.
3~
In a fourth embodiment, a first and second series of relatively short ramps extend outwardly from the periphery of the inner cylinder. A first of the series of ramps are spaced proximalIy from and interspersed between successive pairs of the second series of ramps.
A rim extends inwardly from the proximal end of the outer sleeve. The outer sleeve is advanced axially relative to the inner cylinder rom the retracted to the extended position, such that the rim of the outer sleeve rides up and across the first series of ramps for receipt within an annular gap established between the first and second series of ramps. A self-locking feature is established when the rim of the outer ~¦
cylinder is received within said gap to prevent the detachment of the outer sleeve from the inner cylinder and a return of the outer sleeve to the retracted positionO
In a fith embodiment, a first and second series of relatively short ramps project outwardly and iA
diferent directions from the respective intersections of adjacent sidewall which deine a hexagonal inner cylinder. A first of the series of ramps are spaced proximally from the second series o ramps. A rim .1 ~31~
extends inwardly from the proximal end of the outer sleeve. The outer sleeve is advanced axially relative to the inner cylinder from the retracted to the extended position, such that the rim of the outer sleeve rides up and across the first series of ramps for receipt within an annular gap established between the first and second series of ramps. A self-locking feature is established when the rim of the outer cylinder is received within said gap to prevent the detachment of the outer sleeve from the inner cylinder and a return of the outer sleeve to the retracted position.
~3~
g ~RIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 shows a cross-section of a shielded syringe according to a flrst embodiment of the invention having an inner needle carrying cylinder and an outer protective sleeve locked in a retracted positi~on relative to one another;
FIG. 2 shows the cross-section of the syringe with the inner cylinder and outer sleeve axially advanced relative to one another to the extended position;
FIG. 3 is an isometric illustration of the inner cylinder;
FIG~ 4 is a cross-section taken along lines 4-4 of FIG~ 3;
FIG. 5 is an isometric illustration of the outer sleeve;
FIG. 6 is an enlarged detail taken from FIG. 2;
~3~ 2~
~.o FIG. 7 shows a cross-section of a shielded syringe according to a second embodiment of the invention having an inner needle carrying cylinder and an outer -protective sleeve locked in a retracted position relative to one another;
FIG. 8 shows a cross-section of the syringe of the second embodiment with the inner cylinder and outer sleeve axially advanced relative to one another to the extended position;
FIG. 9 is an isometric illustration of the syringe according to the second embodiment; .:
. FIG. 10 shows a cross-section of the shielded syringe . according to a third embodiment of the invention having an inner needle carrying cylinder and an outer protective sleeve locked in a retracted position relat.ive to one another;
i FIG. 11 shows the cross-section of the syringe of the third embodiment with the inner cylinder and outer sleeve axially advanced relative to one another to the extended position;
FI5. 12 is an isome~ric illustration of the inner cylinder of the syringe of the third embodiment;
FIG. 13 is an isometric illustration of the outer sleeve of the syringe of the third embodiment;
FIG. 14 shows a cross-section of the shielded syringe according to a fourth embodiment of the invention having an inner needle carrying cylinder and an outer protective sleeve locked in a retracted position relative to one another;
FIG. lS shows the cross-section o the syringe of the fourth embodiment with the inner cylinder and outer sleeve axially advanced relative to one another to the extended position;
FIG. 16 is an isometric illustration of the inner cylinder of the syringe of the fourth embodiment;
FIG. 17 is a cross-section taken along lines 17-17 of FIG. 16;
FIG. 18 is an isometric illustration of the outer sleeve of the syringe of the fourth embodiment;
FIG. 19 shows a cross-section of the shielded syrinye according to a fifth embodiment of the invention having an inner needle carrying cylinder and an outer protective sleeve locked in a retracted position relative to one another;
FIG. 20 shows the cross-section of the syringe of the fifth embodiment with the inner cylinder and outer sleeve axially advanced relative ~o one another to the extended position;
FIG. 21 is a cross-section taken along lines 21-21 of FIG. 19;
FIG. 22 is an isometric illustration of the inner cylinder of the syringe of the fifth embodiment; and FIG. 23 is an isometric illustration of the outer sleeve of the syringe of the fifth embodiment.
D~8CRIPTION OF TH~ PREFERRED EMBODIMENT
A first embodiment of the present invention for a shielded safety syringe is best described while referring to FIGs. 1-6 the drawings. Although the syringes illustrated in the drawings hereof have particular application to vacuum tube phlebotomy (ia e.
to successively drawing one or more samples of blood into respective vacuum tubes), it is to be expressly understood that the safety features of this invention are also applicable to a syringe in which a fluid medication is expulsed into a recipient by means of a conventional injection procedure. Referring initially to FIG~ 1, there is shown a hypodermic syringe assembly 1 comprising an inner syringe barrel or cylinder 2 and a cylindrical outer protective sleeve 4. The inner cylinder 2 and outer sleeve ~ are coaxially aligned and axially extensible relative to one another, such that the outer sleeve 4 is adapted for movement bet~een a retracted position ~of FIG. 1) and an axially extended position (of FIG. 2).
Details of the inner syringe cylinder 2 are disclosed while referring concurrently to FIGs. 1, 3 and 4 of the drawings. Inner cylinder 2 is preferably formed from a clear plastic material and has an open proximal end and a wall 5 which defines a substantially closed distal endO Coextensively formed with and projectiny radially outward from the inner cylinder 2 are a series of elongated ribs 6. Ribs 6 extend longitudinally and in spaced, parallel alignment with one another around the exterior of inner cylinder 2. Each rib ~ includes a proximally oriented ramp portion 7 and a contiguous, distally oriented step portion 8 (best shown in FIG.
3).
Also coextensively formed with and projecting radially outward from the inner cylinder 2 are a series of relatively short fins 10. Fins 10 are arranged in spaced, parallel alignment with one another around the distal end of inner cylinder 2. However, and as is best shown in FIGs. 3 and 4 of the drawings, the fins 10 are interspersed between respective pairs of ribs 6.
Each fin 10 includes a proximally oriented seat portion 11 and a contiguous, upwardly extending and distally oriented stop portion 12. As best shown in FIG. 3, ~3~3~
the seat portions 11 of fins 10 lie below and between the step portions 8 of ribs 6 and the stop portions 12 of fins 10, for a purpose which will be described in greater detail hereinafter.
Extending around the open proximal end of inner cylinder 2 is a flange 14. Projecting outwardly ~rom the distal end wall 5 of inner cylinder 2 is a neck lS~
A screw thread 18 is formed around the outer periphery of neck 16 to be mated to a corresponding screw thread formèd in the distal end of outer sleeve 4 in order to interconnect the distal ends of inner cylinder 2 and outer sleeve 4 When the Outer sleeve is moved to a retracted position relative to the inner cylinder and a hypodermic needle 22 is to be made accessible.
A hole is formed through the neck 16 to define a dlstal bore which communicates with the interior of inner cylinder 2. The distal bore is threaded to receive therewithin a correspondingly threaded end 20 of a hub 24 which carries a conventional double ended needle 22. The needle carrying hub 24 is removably secured to the distal bore within neck 16, so that a first end of the needle 22 projects into the inner cylinder 2 and the opposite end thereof projects outwardly from the inner cylinder. A soft rubber sheath 26 covers the end of the needle 22 which projects into the inner cylinder 2.
Details of the outer protective sleeve 4 are now described while referring concurrently to FIGs. 1 and 6 of the drawings. Outer sleeve 4 is preferably formed from a resilient plastic material and has an open proximal end and a flanged wall 32 which defines a substantially closed distal end. An annular lip 34 extends around the interior of the open proximal end.
A plurality of parallel aligned, longitudinally extending slots 36 (best shown in FIG. 5) are formed through outer sleeve 4 from the open proximal end thereof. The slots 36 maximize the flexibility of the proximal end of sleeve 4 when such end is snapped into locking engagement with the inner cylinder 2, in a manner that will soon be disclosed when referrlng to FI~. 2.
~ .
~3~
Proiecting outwardly from the distal end wall 32 of outer sleeve 4 is a hollow neck 38. The neck 38 of outer sleeve 4 is sized to accommodate the neck 16 of inner cylinder 2 therewithin~ A screw thread 40 is formed around the inside periphery of neck 38 to be mated, as previously indicated, to the corresponding screw thread 18 formed around the neck 16 (best illustrated in FIG. 1) when the outer sleeve 4 is located in the retracted position relative to inner cylinder 2 and the distal ends of inner cylinder 2 and outer sleeve 4 are interconnected at their respective necks 16 and 38 to permit access to needle 22.
A flared sheath 44 is also disclosed by whiCh to avoid an accidental needle strike as a consequence of a careless handling of the syringe 1 with the needle 22 exposed. As is best shown in FIG. 1~ the protective sheath 44 has a conical base 46 which is sized to surround the flanged distal end wall 32 of outer sleeve 4. An annular receptacle 48 extends rom the conical base 46 for receiving therewithin the neck 38 of outer sleeve 4 in order to removably attach the sheath 44 to the outer sleeve (i.e. at the distal end of syringe 1).
Coextensively formed with and projecting from the conical base 46 of sheath 44 is a tapered nose portion ~3~
50 in which the needle 22 is to be located. ~hat is to say, the protective sheath 44 is attached to the distal end of syringe 1 when the outer sleeve 4 is located in the retracted position relative to inner cylinder 2, such that needle 22 is exposed. By virtue of the conical base 46 of flared sheath 44, a relatively large target area and guide are provided by which to reliably and automatically align the needle 22 for receipt within nose portion 50. In this fashion, the protective sheath -44 and the wide target area provided by the conical base 46 thereof advantageously enable the syringe user to accurately and safely locate a hypodermic needle within a shielded, protective housing while avoiding the possibility of inadvertently striking himself~ a problem which is inherent with conventional narrow bodied needle caps.
The operation of the syringe 1 is best disclosed when referring concurrently to FIGs. 1-6 of the drawingsr In FIG. 1, the outer sleeve 4 is located in the retracted position relative to inner cylinder 2, and the lip 34 of outer sleeve 4 is disposed proximally of the ribs 6 which extend along inner cylinder 2. The protective sheath 44 is then removed from the syringe 1 to make the exposed needle 22 accessible for :3 3~
penetrating the skin of the patient. A conventional, evacuated phlebotomy tube 52 having a rubber stopper 54 located in the open end thereof is moved through the open proximal end of inner cylinder 2. The tube 52 is then moved into con~act with the needle 22 at the interior of cylinder 2, such that the needle penetrates the rubber stopper 54. A blood sample is automatically suctioned, in a well-known manner, from the patient to fill the tube 52 via ne~dle 22.
When the last blood sample has been taken, the hypodermic needle 22 is withdrawn from the patient. In order to pre.vent an accidental needle strike and the possible spread of contagious disease from a contaminated needle, the previously connected distal ends of inner cylinder 2 and outer sleeve 4 are rotated out of engagement with one another, and the outer sleeve 4 is moved to an axially extended position relative to inner cylinder 2 (best represented in FIG.
2) by grasping the inner cylinder 2 at flange i4 and outer cylinder 4 below flanged end wall 32 and sliding the sleeve 4 over the cylinder 2. More particularl.y, the displacement of outer cylinder 4 causes a corresponding movement of the annular lip 34 up the ramps 7 and over the steps 8 of ribs 6 (be~t shown in .~3~
FIG. 3) n Because of its resilient n~ture, the lip 34 (which is separated into flexible lip sections by the longitudinally extending slots 36) will be rotated outwardly and, thereby, stressed as the lip 34 rides up the ramp portions 7 of ribs 6. The continued axial advancement of outer sleeve 4 relative to inner cylinder 2 will cause the lip 34 to be snapped onto the recessed seats 11 of fins 10 between the stops 12 thereof and the steps 8 of fins 6 (best shown in FIG.
6).
Thus, a positive, self-locking feature is established, because the lip 34 of outer sleeve 4 is securely and permanently retained below and between the elevated steps 8 and stops 12, whereby to prevent both the continued axial advancement of outer sleeve 4 past inner cylinder 2 as well as a return of the outer sleeve to the retracted position. What is more, because the seats 11 of f ins 10 extend above the exterior surface of inner cylinder 2, the lip 34 of outer sleeve 4 will not return to a totally relaxed condition, but will remain slightly stressed, when received upon the seats 11. The corresponding compressive force exerted by the flexible lip 34 of sleeve 4 will prevent the removal of lip 34 from the :~3~
recessed seats 11 and the detachment of the outer sleeve 4 from the inner cylinder 2~
By virtue of the foregoing, a disposal cartridge (of FIG. 2) is created having the inner cylinder 2 and outer sleeve 4 locked in an axially extended position relative to one another with the hypodermic needle 2 surrounded, completely shielded, and rendered irretrievable therewithin so as to permit the safe handling of syringe 1 while avoiding an accidental needle strike. Accordingly; the specimen tube 52 may be detached from needle 22 and removed through the open proximal end of inner cylinder 2. However, because of the permanent nature of the interlocking engagement between inner cylinder 2 and outer sleeve 4, the syringe 1 cannot be reused. Moreover, the used syringe is in a condition to permit safe disposal without requiring the removal or handling of the needle 22 as has heretofor been necessitated as a consequence of many conventional syringe assemblies.
~3~3~
FIGs. 7~9 of the drawings show a second emhodiment of the present invention for a shielded safety syringe.
Like the syringe 1 of FIGs. 1-6, the syringe 60 of -FIGs. 7-9 includes an inner syrin.ge barrel or cylinder 62 and a cylindrical outer protective sleeve 64. The proximal ends of cylinder 62 and sleeve 64 are open, and the distal ends thereof are substantially closed.
The inner cylinder 62 and outer sleeve 64 are coaxially aligned and axially extensible relative to one another, such that outer sleeve 64 is adapted Eor movement ..
between a retracted position (of FIG. 7) to an axially extended position ~of FIG. 8).
Also like the syringe 1, syringe 60 includes a screw threaded hub 66 which carries a double ended hypodermic needle 68. The needle carrying hub 68 is retained within a distal bore formed through a neck 70 which extends from the distal end wall of inner cylinder 62, whereby one end of needle 68 projects outwardly from the inner cylinder 62, and the opposite end projects .
into the cylinder 62 for communication with an evacuated phlebotomy tube (not shown). The outer l sleeve 64 includes a hollow neck 72 which is sized to ¦
accommodate the neck 70 of inner cylinder 62 so that a tight friction fit is formed therebetween when the outer sleeve 64 is located at the retracted position relative to inner cylinder 62. Accordingly, ~he distal ends of inner cylinder 62 and outer cylinder 64 can be temporarily joined at ~heir respective necks 70 and 72 to retain syringe 60 in the retracted position and thereby provide access to needle 68 tbest shown in FIG. 7).
The inner cylinder 62 includes a pair of grooves 74 and 76 extending around the periphery thereof. A first groove 74 is located below the open proximal end of ' cylinder 62, and the second groove 76 is located above the distal end wall thereof.
The outer sleeve 64 includes a pair of oppositely disposed, spring-like locking members 78 by which to secure the outer protective sleeve 64 in either of the retracted or axially extended positions relative to inner cylinder 62. More particularly, each locking member 78 includes an arm 80 and a leg 82 which are coextensively formed with and hingedly connected to the outer sleeve 64 at a joint 84 located at the periphery of the open proximal end of sleeve 64. As will soon be explained, the arms and legs 80 and 82 of locking 1 members 78 are adapted to rotate around their !
2~
2~1 respective j oints 84 to form what is known in the art as a living hinge assembly. To accommodate the rotation of the legs 82 of locking members 78 towards inner cylinder 62, laterally extending slots (best shown in FIG. 9) are formed through the outer sleeve 64 below the joints 84.
The operation of the syringe 60 is best described while continuing to refer to FIGs. 7-9 vf the drawingsO
In FIG. 7, the outer sleeve 64 is located at the retracted position relative to inner cylinder 62 and the legs 82 of locking members 78 are shown in their normal bias extending through the slots 86 (of FIG~ 3) in outer sleeve 6q for receipt by the proximal groove 74 of inner cylinder 62. With the legs 82 of locking members 78 located in grooves 74, the arms 80 are radially spaced from the outer sleeve 64. The hypodermic needle 68 is now exposed for penetrating the skin of the patient, so that a phlebotomy tube ~not shown) may be infused with a sample of the patient's blood. After the last blood sample has been taken, and in order to avoid an accidental needle strike, the inner cylinder 62 is grasped, below major flange 63, and the outer sleeve64 is moved to an axially extended position (of FTG. 8) relative to inner cylinder 62 by sliding the sleeve 64 thereover.
~3~
That is to sayJ equal and opposite compressive forces are applied (in the directions of the reference arrows of FIG. 7) to the outwardly extending arms 80 of locking members 78, whereby arms 80 are rotated around pivot 84 against the normal spring bias thereof to a new position (shown in phantom) in closer proximity to outer sleeve 64. The rotation of arms 80 causes a corresponding rotation of legs 82 in an opposite direction around pivot 84 and out of proximal groove 74 to a detached position (also shown in phantom) relative to the inner cylindex 62. Accordingly, outer sleeve 64 is free to slide over inner cylinder 62 in the direction indicated by the reference arrow of FIG. 8.
After outer sleeve 64 has been axially advanced, such that the proximal end thereof is moved adjacent the distal end of inner cylinder 62, the spring biased legs 82 of locking members 78 are automatically rotated around hinges 84, through the slots 86, and snapped into receipt by the distal grooves 76 o~ inner cylinder 62. With the legs 82 of locking members 78 received within grooves 76, a positive, self-locking feature is established, whereby to prevent both the continued axial advancement and possible detachment of outer sleeve 64 from inner sleeve 62 as well as an ~3~
inadvertent return of the outer sleeve 64 to the retracted position of FIGo 7~ Therefore, a disposal cartridge is created (in FIG. 8) having the inner cylinder 62 and outer sleeve 64 locked and axially extended relative to one another with the hypoderlnic needle 68 completely surrounded and shielded, so as to permit the safe handling of the syringe 60 while avoiding an accidental needle strike and the poss:ible spread of a contagious disease~
FIGs. 10-13 of the drawings show a third embodiment of the present invention for a shielded safety syringe.
Like the syringes of FIGS. 1-9, the syringe 90 of FIGs. 10-13 includes an inner cylinder 92 and an outer protective sleeve 94 which are coaxially aligned and axially extensible relative to one another between a retracted position (of FIG. 10) and an axially extended position (of FIG. 11). The inner cylinder 92 has an open proximal end for receiving an evacuated phlebotomy tube (not shown~ and a substantially closed distal end wall. A screw threaded hub 96l which carries a double ended needle 98, is retained within a distal bore formed through a neck 100 which extends from the distal end wall of inner cylinder 92, whereby one end of the needle 98 projects outwardly from the inner cylinder 92, and the opposite end projects in~o the cylinder 92 for communication with the phlebotomy tube.
The outer sleeve 94 includes an open proximal end for passing the inner cylinder 92 therethrough and a substantially closed, flanged distal end wall 101 having a hollow neck 102 extending outwardly therefrom.
Neck 102 is sized to accommodate the neck 100 of inner cylinder 92, so that a tigh~ friction fit is formed therebetween when the outer sleeve 94 is moved to a retracted position rela~ive to inner cylinder 92.
Accordingly, the distal ends of inner cylinder 92 and outer sleeve 94 can be temporarily joined at their respective necks 100 and 102 to retain syringe 90 in the retracted position and thereby permit access to the needle 98 (best shown in FIG. 10). A plurality (e.g.
three) of raised locking bumps 104 are coextensively formed with and project radially inward from the outer sleeve 94. The bumps 104 are spaced around the interior of outer sleeve 94 below the open proximal end thereof. A corresponding plurality (e.g. three) of parallel aligned, longitudinally extending slots 106 (best shown in FIG. 13) are respectively formed through outer sleeve 94 between pairs o bumps 104.
~3~
The 510ts maximize the flexibility of outer sleeve 94 for retaining the locking bumps 104 in engagement with the inner cylinder 92, as will soon be explained~
As is best shown in FIG. 12, a series (e.g. three) of generally "S" shaped, longitudinally extending and spiraling grooves 108 are formed in the exterior of outer sleeve 94. Although an S-shaped groove is illustrated, it is to be expressly understood ~hat grooves 108 may have any other suitable shape. The grooves 108 are spaced from one another around the periphery of outer sleeve 94 and provide guide paths through which the locking bumps 104 of inner cylinder 92 are adapted to ride when the inner cylinder 92 is moved axially between the retracted and extended positions relative to outer sleeve 94.
As is best shown in FIGs.10 and 11, the open proximal end of inner cylinder 92 terminates at a ~lared portion 110. Flared portion 110 includes a slotted opening 112 extending therearound. A lip 114 is formed at the most distal aspect of flared portion 110. A cylindrical collar 116 having a pair of oppositely disposed, outwardly extending finger loops 118 and a coextensively formed, inwardly extending flange 120 is ,.
attached to the flared proximal portion 110 of inn~r cylinder 92. In the assembled syringe relationship shown in FIGs. 9 and 10, the flange 120 of collar 116 . is received through the opening 112 in flared portion :; 110 and retained behind the lip 114. The lip 114 prevents the withdrawal of the flange 120 from opening 112 and the removal of collar 116 from the flared .` proximal portion 110 of inner cylinder g2. However, the inner cylinder 92 is free to rotate relative to `j both outer sleeve 94 and collar 116.
The operation of the syringe 90 is best described while continuing to refer to FIGs. 10-13. In FIG. 10, .:- the inner cylinder 92 is located at the retracted ,. , position relative to outer sleeve 94 and the locking ~. bumps 104 of inner cylinder 92 are positioned at the ,., proximal ends of grooves 108. The hypodermic needle 98 ~ is now exposed for penetrating the skin of the patient, ~ so that a phlebotomy tube (not shown~ may be infused with a sample of the patient's blood. After the last blood sample has been taken, and in order to avoid an accidental needle strike, the outer sleeve 94, below '` flanged end wall lOly and the finger loops 118 of the collar 116 are grasped, and the inner cylinder 92 is pulled to the axially extended position 3,~
(of FIG. 11) relative to outer sleeve 94, whereby cylinder 92 is caused to simultaneously slide and rotate through sleeve 94. That is to say, the bumps 10~ of outer sleeve 94 ride along the spiraling grooves 108 from the proximal to the distal ends thereof until inner cylinder 92 has been axially advanced, such that the distal end thereof is moved adjacent the proximal end of outer sleeve 94. The axial advancement of inner cylinder 92 through outer sleeve 94 and the corresponding travel of locking bumps 104 through spiraling grooves 108 causes an automatic rotation of the inner cylinder 92 relative to outer sleeve 94 and collar 116. The axial`and rota~ional movement of inner cylinder 92, as the cylinder is moved through outer sleeve 94 to the axially extended position, is indicated by the pair of reference arrows in FIG. 11.
When the locking bumps 104 are seated at the distal .. .
ends of spiraling grooves 108, a self-locking feature is established, whereby to prevent both the continued axial advancement and possible detachment of inner cylinder 92 from outer sleeve 94 as well as an inadvertent return of inner cylinder 92 to the retracted position of FIG. 10. Therefore, a disposal cartridge is created (in FIG. 11) having the inner 13~B~3~23, cylinder 92 and outer sleeve 94 axially ~xtended and locked relative to one another with hypodermic needle 98 completely surrounded and shielded, so as to permit the safe handling of syringe 90 while avoiding an accidental needle strike and the possible spread of a contagious disease.
FIGs. 14-18 of the drawings show a fourth embodiment of the present invention for a shielded safety syringe.
Like the previously described syringes of FIGs. 1-13, the syringe 130 of FIGs. 1~-18 includes an inner cylinder 132 and an outer protective sleeve 134 which are coaxially aligned and axially extensible relative to one another from a retracted position (of FIG. 14) to an axially extended position ~of FIG. 15)~ The inner cylinder 132 has an open, flanged proximal end for receiving an evacuated phlebotomy tube ~not shown) and a substantially closed distal end wall 135. A
screw threaded hub 136, which carries a double ended needle 138, is retained within a distal bore formed through a neck 140 which extends from the distal end wall 135 of inner cylinder 132, whereby one end of needle 138 projects outwardly from the inner cylinder 132, and the opposite end of needle 138 projects into the cylinder 132 for communication with the phlebotomy tube.
Coextensively formed with and projecting outwardly from the inner cylinder 132 are first and second series of relatively short ramps 1~2 and 144 (best shown in FIGs. 16 and 17). A first of a series of ramps 142 extend in spaced, parallel alignment with one another around the distal end of inner cylinder 132. The second series of ramps 144 are spaced proximally from ramps 142 and also extend in spaced, parallel alignment with one another around inner cylinder 132. However, ramps 142~are interspersed between respective pairs of ramps 144. Ramps 142 slope upwardly in a proximally oriented direction~ and ramps 144 slope upwardly in a :.
distally oriented direction, such that the most elevated ends of ramps 142 and 144 oppose one another to establish a narrow, annular gap 146 in the space therebetween.
The outer sleeve 134 includes an open proximal end for passing the inner cylinder 132 therethrough and a substantially closed, flanyed distal end wall 148 having a hollow neck 150 extending outwardly therefrom.
The neck 150 of outer sleeve 134 is sized to accommodate the neck 140 of inner cylinder 132 therewithin. A screw thread is formed around the inside of the neck 150 of outer sleeve 134 to be mated ~3~
to a corresponding screw thread formed around the neck 140 of inner cylinder 132 lbest illustrated in FIG~
14). Accordingly, when the outer sleeve 134 is located in the retracted position relative to inner sleeve 132 the inner cylinder and outer sleeve may be interconnected to one another at their respective necks 140 and 150 to permit access to needle 138. An annular rim 152 (best shown in FIG. 18) is coextensively formed with and extends around the interior of outer sleeve 134 at the proximal end thereof for a purpose which will now be described.
The operation of the syringe 130 is now disclosed while continuing to refer to FIGs. 14-18 of the drawings. In FIG. 14, the outer sleeve 134 is located in the retracted position relative to inner cylinder 132r such that the annular rim 152 of outer sleeve 134 is positioned proximally from and out of engagement with the ramps 142 and 144 of the inner cylinder 132.
The inner cylinder and outer sleeve are connected together at their respective screw threaded necks 140 and 150, whereby to expose the hypodermic needle 138 for penetratin~ the skin of a patient, so that a phlebotomy tube ~not shown) may be infused with a sample of the patient's blood. After the last blood 3~
sample has been taken, and in order to avoid an accidental needle strike, the outer sleeve 134 is grasped, below flanged end wall 148, and pulled to the axially extended position ~of FIG. 15) relative to inner cylinder 132.
The axial advancement of outer sleeve 134 causeJ, a corresponding advancement o~ the rim 152, such that rim 152 travels up and across the proximally oriented series of ramps 144. The continued axial advancement of outer sleeve 134 relative to inner cylinder 132 will cause rim 152 to be snapped into the gap 146 between ramps 142 and 144. A positive self-locking feature is thereby established, because the rim 152 of outer sleeve 134 is securely and permanently retained within the gap 146 between the most elevated portions of ramps 142 and 144. Hence, the ramps 142 and 144 form stops to prevent both the continued axial advancement and possible detachment of the outer sleeve 134 from the inner cylinder 132 as well as an inadvertent return of the outer sleeve 134 to the retracted position of FIG.
14. Thereore, a disposal cartridge is created (in FIG. 15) having the inner cylinder 132 and outer sleeve 134 locked in the axially extended position with the hypodermic needle 138 completely surrounded and ~3~ 3~l shielded, so that the syringe 130 may be safely handled while avoiding an accidental needle strike and the possible spread of a contagious disease.
FIGs. 19-23 of the drawings show a fifth embodiment of the present invention for a safety syringe. The syringe 160 of FIGs. lg-23 includes an inner cylinder and outer protective sleeve which are coaxially aligned and axially extensible relative to one another from a retracted position (of FIG. 19) to an axially extended position ~of FIG. 20). As is best illustrated in FIG~
23, the outer sleeve 134 of syringe 160 is identical to the outer sleeve which was previously described when referring to the syringe 130 of FIGs. 14-18.
Therefore, identical reference numerals will be used to de~cribe the outer sleeve 134 of FIGs. 19-23, and the details thereof will be omitted. Likewise, the screw threaded hub 136 and hypodermic needle 138 of syringe 160 are identical to those of the syringe 130~
Therefore, identical reference numerals will also be used to refer to hub 136 and needle 138.
As is best shown in FIG. 21, ~he inner cylinder 162 of the syringe 160 has a hexagonal cross-section comprising a plurality of contiguous sidewalls. Inner cylinder 162 also has an open flanged proximal end for receiving an evacuated phlebotomy tube (not showr,) and a substantially closed distal end wall. The hypodermic needle carrying hub 136 is retained within a distal bore formed through a neck 163 which extends from the distal end wall of inner cylinder 162, whereby one end of needle 138 projects outwardly from the inner cylinder, and the opposite end of needle 138 projects into the cylinder for communication with the phlebotomy id tube.
Coextensively formed with and projecting outwardly from the distal end of inner cylinder 162 are first and second series of short ramps 164 and 166 ~best illustrated in FIG. 22). Tbe first series of ramps 164 project outwardly in a first direction from the respective intersections of adjacent sidewalls which define hexagonal inner cylinder 162. A second series of ramps 166 are spaced proximally from ramps 164 and project outwardly in a second direction from the respective intersections of the sidewalls of inner cylinder 162. As is best shown in FIG~ 21, an angle oP
~3~ 2~
approximately 120 degrees is formed between the first and second directions in which the first and second series of ramps 164 and 166 respectively extend from the intersections of the sidewalls of inner cylinder 162. Ramps 164 slope upwardly in a proximally oriented direction, and ramps 166 slope upwardly in a distally oriented direction, such that the most elevated ends 164 and 166 oppose one another to establish a narrow, annular gap 168 in the space therebetween.
The operation of the syrin~e 160 is now described while continuing to refer to FIGs. 19-23 o~ the drawings. In FIG. 19, the outer sleeve 134 is located in the retracted position relative to inner sleeve 162, such that the annular rim 15~ of outer sleeve 134 is positioned proximally from and out of engagement with the ramps 164 and 166 of the inner cylinder 162. The inner cylinder and outer sleeve are connected together at their respective screw threaded necks 163 and 150, whereby to expose the hypodermic needle 138 for penetrating the skin of a patient so that a phlebotomy tube (not shown) may be infused with a sample of the patient's blood. After the last blood sample has been ;
taken, and in order to avoid an accidental needle 3~:~
strike, the outer sleeve 134 is grasped, below flanged end wall 148, and pulled to the axially extended position ~of FIG. 20) relative ~o inner cylinder 162.
The axial advancement of outer sleeve 134 causes a corresponding advancement of the rim 152, such th~t rim 152 travels up and over the proximally oriented series of ramps 166. The continued axial advancement of outer sleeve 134 relative to inner cylinder 162 will cause rim 152 to be snapped into the gap 168 between ramps 164 and 166. A positive self-locking feature is thereby established, because the rim 152 of outer sleeve 134 is securely and permanently retained within the gap 168 between the most elevated portions of ramps 164 and 166. ~ence~ the ramps 164 and 166 form stops to prevent both the continued axial advancement and possible detachment of the outer sleeve 134 from the inner cylinder 162 as well as an inadvertent return of the outer sleeve 134 to the retracted position of FIG.
l9o Therefore, a disposal cartridge is created ~in FIG. 20) having the inner cylinder 162 and outer sleeve 134 locked in the axially extended position with the hypodermic needle 138 completely surrounded and shielded, so that the syringe 160 may be safely handled while avoiding an accidental needle strike and the possible spread of a contagious disease.
~3~
3g It will be apparent that while preferred embodiments of the present invention has been shown and described, various modifications and changes may be made without departing from the true spirit and 5cope of the invention. Having thus set forth the preferred embodiments of this invention, what is claimed is:
In a fourth embodiment, a first and second series of relatively short ramps extend outwardly from the periphery of the inner cylinder. A first of the series of ramps are spaced proximalIy from and interspersed between successive pairs of the second series of ramps.
A rim extends inwardly from the proximal end of the outer sleeve. The outer sleeve is advanced axially relative to the inner cylinder rom the retracted to the extended position, such that the rim of the outer sleeve rides up and across the first series of ramps for receipt within an annular gap established between the first and second series of ramps. A self-locking feature is established when the rim of the outer ~¦
cylinder is received within said gap to prevent the detachment of the outer sleeve from the inner cylinder and a return of the outer sleeve to the retracted positionO
In a fith embodiment, a first and second series of relatively short ramps project outwardly and iA
diferent directions from the respective intersections of adjacent sidewall which deine a hexagonal inner cylinder. A first of the series of ramps are spaced proximally from the second series o ramps. A rim .1 ~31~
extends inwardly from the proximal end of the outer sleeve. The outer sleeve is advanced axially relative to the inner cylinder from the retracted to the extended position, such that the rim of the outer sleeve rides up and across the first series of ramps for receipt within an annular gap established between the first and second series of ramps. A self-locking feature is established when the rim of the outer cylinder is received within said gap to prevent the detachment of the outer sleeve from the inner cylinder and a return of the outer sleeve to the retracted position.
~3~
g ~RIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 shows a cross-section of a shielded syringe according to a flrst embodiment of the invention having an inner needle carrying cylinder and an outer protective sleeve locked in a retracted positi~on relative to one another;
FIG. 2 shows the cross-section of the syringe with the inner cylinder and outer sleeve axially advanced relative to one another to the extended position;
FIG. 3 is an isometric illustration of the inner cylinder;
FIG~ 4 is a cross-section taken along lines 4-4 of FIG~ 3;
FIG. 5 is an isometric illustration of the outer sleeve;
FIG. 6 is an enlarged detail taken from FIG. 2;
~3~ 2~
~.o FIG. 7 shows a cross-section of a shielded syringe according to a second embodiment of the invention having an inner needle carrying cylinder and an outer -protective sleeve locked in a retracted position relative to one another;
FIG. 8 shows a cross-section of the syringe of the second embodiment with the inner cylinder and outer sleeve axially advanced relative to one another to the extended position;
FIG. 9 is an isometric illustration of the syringe according to the second embodiment; .:
. FIG. 10 shows a cross-section of the shielded syringe . according to a third embodiment of the invention having an inner needle carrying cylinder and an outer protective sleeve locked in a retracted position relat.ive to one another;
i FIG. 11 shows the cross-section of the syringe of the third embodiment with the inner cylinder and outer sleeve axially advanced relative to one another to the extended position;
FI5. 12 is an isome~ric illustration of the inner cylinder of the syringe of the third embodiment;
FIG. 13 is an isometric illustration of the outer sleeve of the syringe of the third embodiment;
FIG. 14 shows a cross-section of the shielded syringe according to a fourth embodiment of the invention having an inner needle carrying cylinder and an outer protective sleeve locked in a retracted position relative to one another;
FIG. lS shows the cross-section o the syringe of the fourth embodiment with the inner cylinder and outer sleeve axially advanced relative to one another to the extended position;
FIG. 16 is an isometric illustration of the inner cylinder of the syringe of the fourth embodiment;
FIG. 17 is a cross-section taken along lines 17-17 of FIG. 16;
FIG. 18 is an isometric illustration of the outer sleeve of the syringe of the fourth embodiment;
FIG. 19 shows a cross-section of the shielded syrinye according to a fifth embodiment of the invention having an inner needle carrying cylinder and an outer protective sleeve locked in a retracted position relative to one another;
FIG. 20 shows the cross-section of the syringe of the fifth embodiment with the inner cylinder and outer sleeve axially advanced relative ~o one another to the extended position;
FIG. 21 is a cross-section taken along lines 21-21 of FIG. 19;
FIG. 22 is an isometric illustration of the inner cylinder of the syringe of the fifth embodiment; and FIG. 23 is an isometric illustration of the outer sleeve of the syringe of the fifth embodiment.
D~8CRIPTION OF TH~ PREFERRED EMBODIMENT
A first embodiment of the present invention for a shielded safety syringe is best described while referring to FIGs. 1-6 the drawings. Although the syringes illustrated in the drawings hereof have particular application to vacuum tube phlebotomy (ia e.
to successively drawing one or more samples of blood into respective vacuum tubes), it is to be expressly understood that the safety features of this invention are also applicable to a syringe in which a fluid medication is expulsed into a recipient by means of a conventional injection procedure. Referring initially to FIG~ 1, there is shown a hypodermic syringe assembly 1 comprising an inner syringe barrel or cylinder 2 and a cylindrical outer protective sleeve 4. The inner cylinder 2 and outer sleeve ~ are coaxially aligned and axially extensible relative to one another, such that the outer sleeve 4 is adapted for movement bet~een a retracted position ~of FIG. 1) and an axially extended position (of FIG. 2).
Details of the inner syringe cylinder 2 are disclosed while referring concurrently to FIGs. 1, 3 and 4 of the drawings. Inner cylinder 2 is preferably formed from a clear plastic material and has an open proximal end and a wall 5 which defines a substantially closed distal endO Coextensively formed with and projectiny radially outward from the inner cylinder 2 are a series of elongated ribs 6. Ribs 6 extend longitudinally and in spaced, parallel alignment with one another around the exterior of inner cylinder 2. Each rib ~ includes a proximally oriented ramp portion 7 and a contiguous, distally oriented step portion 8 (best shown in FIG.
3).
Also coextensively formed with and projecting radially outward from the inner cylinder 2 are a series of relatively short fins 10. Fins 10 are arranged in spaced, parallel alignment with one another around the distal end of inner cylinder 2. However, and as is best shown in FIGs. 3 and 4 of the drawings, the fins 10 are interspersed between respective pairs of ribs 6.
Each fin 10 includes a proximally oriented seat portion 11 and a contiguous, upwardly extending and distally oriented stop portion 12. As best shown in FIG. 3, ~3~3~
the seat portions 11 of fins 10 lie below and between the step portions 8 of ribs 6 and the stop portions 12 of fins 10, for a purpose which will be described in greater detail hereinafter.
Extending around the open proximal end of inner cylinder 2 is a flange 14. Projecting outwardly ~rom the distal end wall 5 of inner cylinder 2 is a neck lS~
A screw thread 18 is formed around the outer periphery of neck 16 to be mated to a corresponding screw thread formèd in the distal end of outer sleeve 4 in order to interconnect the distal ends of inner cylinder 2 and outer sleeve 4 When the Outer sleeve is moved to a retracted position relative to the inner cylinder and a hypodermic needle 22 is to be made accessible.
A hole is formed through the neck 16 to define a dlstal bore which communicates with the interior of inner cylinder 2. The distal bore is threaded to receive therewithin a correspondingly threaded end 20 of a hub 24 which carries a conventional double ended needle 22. The needle carrying hub 24 is removably secured to the distal bore within neck 16, so that a first end of the needle 22 projects into the inner cylinder 2 and the opposite end thereof projects outwardly from the inner cylinder. A soft rubber sheath 26 covers the end of the needle 22 which projects into the inner cylinder 2.
Details of the outer protective sleeve 4 are now described while referring concurrently to FIGs. 1 and 6 of the drawings. Outer sleeve 4 is preferably formed from a resilient plastic material and has an open proximal end and a flanged wall 32 which defines a substantially closed distal end. An annular lip 34 extends around the interior of the open proximal end.
A plurality of parallel aligned, longitudinally extending slots 36 (best shown in FIG. 5) are formed through outer sleeve 4 from the open proximal end thereof. The slots 36 maximize the flexibility of the proximal end of sleeve 4 when such end is snapped into locking engagement with the inner cylinder 2, in a manner that will soon be disclosed when referrlng to FI~. 2.
~ .
~3~
Proiecting outwardly from the distal end wall 32 of outer sleeve 4 is a hollow neck 38. The neck 38 of outer sleeve 4 is sized to accommodate the neck 16 of inner cylinder 2 therewithin~ A screw thread 40 is formed around the inside periphery of neck 38 to be mated, as previously indicated, to the corresponding screw thread 18 formed around the neck 16 (best illustrated in FIG. 1) when the outer sleeve 4 is located in the retracted position relative to inner cylinder 2 and the distal ends of inner cylinder 2 and outer sleeve 4 are interconnected at their respective necks 16 and 38 to permit access to needle 22.
A flared sheath 44 is also disclosed by whiCh to avoid an accidental needle strike as a consequence of a careless handling of the syringe 1 with the needle 22 exposed. As is best shown in FIG. 1~ the protective sheath 44 has a conical base 46 which is sized to surround the flanged distal end wall 32 of outer sleeve 4. An annular receptacle 48 extends rom the conical base 46 for receiving therewithin the neck 38 of outer sleeve 4 in order to removably attach the sheath 44 to the outer sleeve (i.e. at the distal end of syringe 1).
Coextensively formed with and projecting from the conical base 46 of sheath 44 is a tapered nose portion ~3~
50 in which the needle 22 is to be located. ~hat is to say, the protective sheath 44 is attached to the distal end of syringe 1 when the outer sleeve 4 is located in the retracted position relative to inner cylinder 2, such that needle 22 is exposed. By virtue of the conical base 46 of flared sheath 44, a relatively large target area and guide are provided by which to reliably and automatically align the needle 22 for receipt within nose portion 50. In this fashion, the protective sheath -44 and the wide target area provided by the conical base 46 thereof advantageously enable the syringe user to accurately and safely locate a hypodermic needle within a shielded, protective housing while avoiding the possibility of inadvertently striking himself~ a problem which is inherent with conventional narrow bodied needle caps.
The operation of the syringe 1 is best disclosed when referring concurrently to FIGs. 1-6 of the drawingsr In FIG. 1, the outer sleeve 4 is located in the retracted position relative to inner cylinder 2, and the lip 34 of outer sleeve 4 is disposed proximally of the ribs 6 which extend along inner cylinder 2. The protective sheath 44 is then removed from the syringe 1 to make the exposed needle 22 accessible for :3 3~
penetrating the skin of the patient. A conventional, evacuated phlebotomy tube 52 having a rubber stopper 54 located in the open end thereof is moved through the open proximal end of inner cylinder 2. The tube 52 is then moved into con~act with the needle 22 at the interior of cylinder 2, such that the needle penetrates the rubber stopper 54. A blood sample is automatically suctioned, in a well-known manner, from the patient to fill the tube 52 via ne~dle 22.
When the last blood sample has been taken, the hypodermic needle 22 is withdrawn from the patient. In order to pre.vent an accidental needle strike and the possible spread of contagious disease from a contaminated needle, the previously connected distal ends of inner cylinder 2 and outer sleeve 4 are rotated out of engagement with one another, and the outer sleeve 4 is moved to an axially extended position relative to inner cylinder 2 (best represented in FIG.
2) by grasping the inner cylinder 2 at flange i4 and outer cylinder 4 below flanged end wall 32 and sliding the sleeve 4 over the cylinder 2. More particularl.y, the displacement of outer cylinder 4 causes a corresponding movement of the annular lip 34 up the ramps 7 and over the steps 8 of ribs 6 (be~t shown in .~3~
FIG. 3) n Because of its resilient n~ture, the lip 34 (which is separated into flexible lip sections by the longitudinally extending slots 36) will be rotated outwardly and, thereby, stressed as the lip 34 rides up the ramp portions 7 of ribs 6. The continued axial advancement of outer sleeve 4 relative to inner cylinder 2 will cause the lip 34 to be snapped onto the recessed seats 11 of fins 10 between the stops 12 thereof and the steps 8 of fins 6 (best shown in FIG.
6).
Thus, a positive, self-locking feature is established, because the lip 34 of outer sleeve 4 is securely and permanently retained below and between the elevated steps 8 and stops 12, whereby to prevent both the continued axial advancement of outer sleeve 4 past inner cylinder 2 as well as a return of the outer sleeve to the retracted position. What is more, because the seats 11 of f ins 10 extend above the exterior surface of inner cylinder 2, the lip 34 of outer sleeve 4 will not return to a totally relaxed condition, but will remain slightly stressed, when received upon the seats 11. The corresponding compressive force exerted by the flexible lip 34 of sleeve 4 will prevent the removal of lip 34 from the :~3~
recessed seats 11 and the detachment of the outer sleeve 4 from the inner cylinder 2~
By virtue of the foregoing, a disposal cartridge (of FIG. 2) is created having the inner cylinder 2 and outer sleeve 4 locked in an axially extended position relative to one another with the hypodermic needle 2 surrounded, completely shielded, and rendered irretrievable therewithin so as to permit the safe handling of syringe 1 while avoiding an accidental needle strike. Accordingly; the specimen tube 52 may be detached from needle 22 and removed through the open proximal end of inner cylinder 2. However, because of the permanent nature of the interlocking engagement between inner cylinder 2 and outer sleeve 4, the syringe 1 cannot be reused. Moreover, the used syringe is in a condition to permit safe disposal without requiring the removal or handling of the needle 22 as has heretofor been necessitated as a consequence of many conventional syringe assemblies.
~3~3~
FIGs. 7~9 of the drawings show a second emhodiment of the present invention for a shielded safety syringe.
Like the syringe 1 of FIGs. 1-6, the syringe 60 of -FIGs. 7-9 includes an inner syrin.ge barrel or cylinder 62 and a cylindrical outer protective sleeve 64. The proximal ends of cylinder 62 and sleeve 64 are open, and the distal ends thereof are substantially closed.
The inner cylinder 62 and outer sleeve 64 are coaxially aligned and axially extensible relative to one another, such that outer sleeve 64 is adapted Eor movement ..
between a retracted position (of FIG. 7) to an axially extended position ~of FIG. 8).
Also like the syringe 1, syringe 60 includes a screw threaded hub 66 which carries a double ended hypodermic needle 68. The needle carrying hub 68 is retained within a distal bore formed through a neck 70 which extends from the distal end wall of inner cylinder 62, whereby one end of needle 68 projects outwardly from the inner cylinder 62, and the opposite end projects .
into the cylinder 62 for communication with an evacuated phlebotomy tube (not shown). The outer l sleeve 64 includes a hollow neck 72 which is sized to ¦
accommodate the neck 70 of inner cylinder 62 so that a tight friction fit is formed therebetween when the outer sleeve 64 is located at the retracted position relative to inner cylinder 62. Accordingly, ~he distal ends of inner cylinder 62 and outer cylinder 64 can be temporarily joined at ~heir respective necks 70 and 72 to retain syringe 60 in the retracted position and thereby provide access to needle 68 tbest shown in FIG. 7).
The inner cylinder 62 includes a pair of grooves 74 and 76 extending around the periphery thereof. A first groove 74 is located below the open proximal end of ' cylinder 62, and the second groove 76 is located above the distal end wall thereof.
The outer sleeve 64 includes a pair of oppositely disposed, spring-like locking members 78 by which to secure the outer protective sleeve 64 in either of the retracted or axially extended positions relative to inner cylinder 62. More particularly, each locking member 78 includes an arm 80 and a leg 82 which are coextensively formed with and hingedly connected to the outer sleeve 64 at a joint 84 located at the periphery of the open proximal end of sleeve 64. As will soon be explained, the arms and legs 80 and 82 of locking 1 members 78 are adapted to rotate around their !
2~
2~1 respective j oints 84 to form what is known in the art as a living hinge assembly. To accommodate the rotation of the legs 82 of locking members 78 towards inner cylinder 62, laterally extending slots (best shown in FIG. 9) are formed through the outer sleeve 64 below the joints 84.
The operation of the syringe 60 is best described while continuing to refer to FIGs. 7-9 vf the drawingsO
In FIG. 7, the outer sleeve 64 is located at the retracted position relative to inner cylinder 62 and the legs 82 of locking members 78 are shown in their normal bias extending through the slots 86 (of FIG~ 3) in outer sleeve 6q for receipt by the proximal groove 74 of inner cylinder 62. With the legs 82 of locking members 78 located in grooves 74, the arms 80 are radially spaced from the outer sleeve 64. The hypodermic needle 68 is now exposed for penetrating the skin of the patient, so that a phlebotomy tube ~not shown) may be infused with a sample of the patient's blood. After the last blood sample has been taken, and in order to avoid an accidental needle strike, the inner cylinder 62 is grasped, below major flange 63, and the outer sleeve64 is moved to an axially extended position (of FTG. 8) relative to inner cylinder 62 by sliding the sleeve 64 thereover.
~3~
That is to sayJ equal and opposite compressive forces are applied (in the directions of the reference arrows of FIG. 7) to the outwardly extending arms 80 of locking members 78, whereby arms 80 are rotated around pivot 84 against the normal spring bias thereof to a new position (shown in phantom) in closer proximity to outer sleeve 64. The rotation of arms 80 causes a corresponding rotation of legs 82 in an opposite direction around pivot 84 and out of proximal groove 74 to a detached position (also shown in phantom) relative to the inner cylindex 62. Accordingly, outer sleeve 64 is free to slide over inner cylinder 62 in the direction indicated by the reference arrow of FIG. 8.
After outer sleeve 64 has been axially advanced, such that the proximal end thereof is moved adjacent the distal end of inner cylinder 62, the spring biased legs 82 of locking members 78 are automatically rotated around hinges 84, through the slots 86, and snapped into receipt by the distal grooves 76 o~ inner cylinder 62. With the legs 82 of locking members 78 received within grooves 76, a positive, self-locking feature is established, whereby to prevent both the continued axial advancement and possible detachment of outer sleeve 64 from inner sleeve 62 as well as an ~3~
inadvertent return of the outer sleeve 64 to the retracted position of FIGo 7~ Therefore, a disposal cartridge is created (in FIG. 8) having the inner cylinder 62 and outer sleeve 64 locked and axially extended relative to one another with the hypoderlnic needle 68 completely surrounded and shielded, so as to permit the safe handling of the syringe 60 while avoiding an accidental needle strike and the poss:ible spread of a contagious disease~
FIGs. 10-13 of the drawings show a third embodiment of the present invention for a shielded safety syringe.
Like the syringes of FIGS. 1-9, the syringe 90 of FIGs. 10-13 includes an inner cylinder 92 and an outer protective sleeve 94 which are coaxially aligned and axially extensible relative to one another between a retracted position (of FIG. 10) and an axially extended position (of FIG. 11). The inner cylinder 92 has an open proximal end for receiving an evacuated phlebotomy tube (not shown~ and a substantially closed distal end wall. A screw threaded hub 96l which carries a double ended needle 98, is retained within a distal bore formed through a neck 100 which extends from the distal end wall of inner cylinder 92, whereby one end of the needle 98 projects outwardly from the inner cylinder 92, and the opposite end projects in~o the cylinder 92 for communication with the phlebotomy tube.
The outer sleeve 94 includes an open proximal end for passing the inner cylinder 92 therethrough and a substantially closed, flanged distal end wall 101 having a hollow neck 102 extending outwardly therefrom.
Neck 102 is sized to accommodate the neck 100 of inner cylinder 92, so that a tigh~ friction fit is formed therebetween when the outer sleeve 94 is moved to a retracted position rela~ive to inner cylinder 92.
Accordingly, the distal ends of inner cylinder 92 and outer sleeve 94 can be temporarily joined at their respective necks 100 and 102 to retain syringe 90 in the retracted position and thereby permit access to the needle 98 (best shown in FIG. 10). A plurality (e.g.
three) of raised locking bumps 104 are coextensively formed with and project radially inward from the outer sleeve 94. The bumps 104 are spaced around the interior of outer sleeve 94 below the open proximal end thereof. A corresponding plurality (e.g. three) of parallel aligned, longitudinally extending slots 106 (best shown in FIG. 13) are respectively formed through outer sleeve 94 between pairs o bumps 104.
~3~
The 510ts maximize the flexibility of outer sleeve 94 for retaining the locking bumps 104 in engagement with the inner cylinder 92, as will soon be explained~
As is best shown in FIG. 12, a series (e.g. three) of generally "S" shaped, longitudinally extending and spiraling grooves 108 are formed in the exterior of outer sleeve 94. Although an S-shaped groove is illustrated, it is to be expressly understood ~hat grooves 108 may have any other suitable shape. The grooves 108 are spaced from one another around the periphery of outer sleeve 94 and provide guide paths through which the locking bumps 104 of inner cylinder 92 are adapted to ride when the inner cylinder 92 is moved axially between the retracted and extended positions relative to outer sleeve 94.
As is best shown in FIGs.10 and 11, the open proximal end of inner cylinder 92 terminates at a ~lared portion 110. Flared portion 110 includes a slotted opening 112 extending therearound. A lip 114 is formed at the most distal aspect of flared portion 110. A cylindrical collar 116 having a pair of oppositely disposed, outwardly extending finger loops 118 and a coextensively formed, inwardly extending flange 120 is ,.
attached to the flared proximal portion 110 of inn~r cylinder 92. In the assembled syringe relationship shown in FIGs. 9 and 10, the flange 120 of collar 116 . is received through the opening 112 in flared portion :; 110 and retained behind the lip 114. The lip 114 prevents the withdrawal of the flange 120 from opening 112 and the removal of collar 116 from the flared .` proximal portion 110 of inner cylinder g2. However, the inner cylinder 92 is free to rotate relative to `j both outer sleeve 94 and collar 116.
The operation of the syringe 90 is best described while continuing to refer to FIGs. 10-13. In FIG. 10, .:- the inner cylinder 92 is located at the retracted ,. , position relative to outer sleeve 94 and the locking ~. bumps 104 of inner cylinder 92 are positioned at the ,., proximal ends of grooves 108. The hypodermic needle 98 ~ is now exposed for penetrating the skin of the patient, ~ so that a phlebotomy tube (not shown~ may be infused with a sample of the patient's blood. After the last blood sample has been taken, and in order to avoid an accidental needle strike, the outer sleeve 94, below '` flanged end wall lOly and the finger loops 118 of the collar 116 are grasped, and the inner cylinder 92 is pulled to the axially extended position 3,~
(of FIG. 11) relative to outer sleeve 94, whereby cylinder 92 is caused to simultaneously slide and rotate through sleeve 94. That is to say, the bumps 10~ of outer sleeve 94 ride along the spiraling grooves 108 from the proximal to the distal ends thereof until inner cylinder 92 has been axially advanced, such that the distal end thereof is moved adjacent the proximal end of outer sleeve 94. The axial advancement of inner cylinder 92 through outer sleeve 94 and the corresponding travel of locking bumps 104 through spiraling grooves 108 causes an automatic rotation of the inner cylinder 92 relative to outer sleeve 94 and collar 116. The axial`and rota~ional movement of inner cylinder 92, as the cylinder is moved through outer sleeve 94 to the axially extended position, is indicated by the pair of reference arrows in FIG. 11.
When the locking bumps 104 are seated at the distal .. .
ends of spiraling grooves 108, a self-locking feature is established, whereby to prevent both the continued axial advancement and possible detachment of inner cylinder 92 from outer sleeve 94 as well as an inadvertent return of inner cylinder 92 to the retracted position of FIG. 10. Therefore, a disposal cartridge is created (in FIG. 11) having the inner 13~B~3~23, cylinder 92 and outer sleeve 94 axially ~xtended and locked relative to one another with hypodermic needle 98 completely surrounded and shielded, so as to permit the safe handling of syringe 90 while avoiding an accidental needle strike and the possible spread of a contagious disease.
FIGs. 14-18 of the drawings show a fourth embodiment of the present invention for a shielded safety syringe.
Like the previously described syringes of FIGs. 1-13, the syringe 130 of FIGs. 1~-18 includes an inner cylinder 132 and an outer protective sleeve 134 which are coaxially aligned and axially extensible relative to one another from a retracted position (of FIG. 14) to an axially extended position ~of FIG. 15)~ The inner cylinder 132 has an open, flanged proximal end for receiving an evacuated phlebotomy tube ~not shown) and a substantially closed distal end wall 135. A
screw threaded hub 136, which carries a double ended needle 138, is retained within a distal bore formed through a neck 140 which extends from the distal end wall 135 of inner cylinder 132, whereby one end of needle 138 projects outwardly from the inner cylinder 132, and the opposite end of needle 138 projects into the cylinder 132 for communication with the phlebotomy tube.
Coextensively formed with and projecting outwardly from the inner cylinder 132 are first and second series of relatively short ramps 1~2 and 144 (best shown in FIGs. 16 and 17). A first of a series of ramps 142 extend in spaced, parallel alignment with one another around the distal end of inner cylinder 132. The second series of ramps 144 are spaced proximally from ramps 142 and also extend in spaced, parallel alignment with one another around inner cylinder 132. However, ramps 142~are interspersed between respective pairs of ramps 144. Ramps 142 slope upwardly in a proximally oriented direction~ and ramps 144 slope upwardly in a :.
distally oriented direction, such that the most elevated ends of ramps 142 and 144 oppose one another to establish a narrow, annular gap 146 in the space therebetween.
The outer sleeve 134 includes an open proximal end for passing the inner cylinder 132 therethrough and a substantially closed, flanyed distal end wall 148 having a hollow neck 150 extending outwardly therefrom.
The neck 150 of outer sleeve 134 is sized to accommodate the neck 140 of inner cylinder 132 therewithin. A screw thread is formed around the inside of the neck 150 of outer sleeve 134 to be mated ~3~
to a corresponding screw thread formed around the neck 140 of inner cylinder 132 lbest illustrated in FIG~
14). Accordingly, when the outer sleeve 134 is located in the retracted position relative to inner sleeve 132 the inner cylinder and outer sleeve may be interconnected to one another at their respective necks 140 and 150 to permit access to needle 138. An annular rim 152 (best shown in FIG. 18) is coextensively formed with and extends around the interior of outer sleeve 134 at the proximal end thereof for a purpose which will now be described.
The operation of the syringe 130 is now disclosed while continuing to refer to FIGs. 14-18 of the drawings. In FIG. 14, the outer sleeve 134 is located in the retracted position relative to inner cylinder 132r such that the annular rim 152 of outer sleeve 134 is positioned proximally from and out of engagement with the ramps 142 and 144 of the inner cylinder 132.
The inner cylinder and outer sleeve are connected together at their respective screw threaded necks 140 and 150, whereby to expose the hypodermic needle 138 for penetratin~ the skin of a patient, so that a phlebotomy tube ~not shown) may be infused with a sample of the patient's blood. After the last blood 3~
sample has been taken, and in order to avoid an accidental needle strike, the outer sleeve 134 is grasped, below flanged end wall 148, and pulled to the axially extended position ~of FIG. 15) relative to inner cylinder 132.
The axial advancement of outer sleeve 134 causeJ, a corresponding advancement o~ the rim 152, such that rim 152 travels up and across the proximally oriented series of ramps 144. The continued axial advancement of outer sleeve 134 relative to inner cylinder 132 will cause rim 152 to be snapped into the gap 146 between ramps 142 and 144. A positive self-locking feature is thereby established, because the rim 152 of outer sleeve 134 is securely and permanently retained within the gap 146 between the most elevated portions of ramps 142 and 144. Hence, the ramps 142 and 144 form stops to prevent both the continued axial advancement and possible detachment of the outer sleeve 134 from the inner cylinder 132 as well as an inadvertent return of the outer sleeve 134 to the retracted position of FIG.
14. Thereore, a disposal cartridge is created (in FIG. 15) having the inner cylinder 132 and outer sleeve 134 locked in the axially extended position with the hypodermic needle 138 completely surrounded and ~3~ 3~l shielded, so that the syringe 130 may be safely handled while avoiding an accidental needle strike and the possible spread of a contagious disease.
FIGs. 19-23 of the drawings show a fifth embodiment of the present invention for a safety syringe. The syringe 160 of FIGs. lg-23 includes an inner cylinder and outer protective sleeve which are coaxially aligned and axially extensible relative to one another from a retracted position (of FIG. 19) to an axially extended position ~of FIG. 20). As is best illustrated in FIG~
23, the outer sleeve 134 of syringe 160 is identical to the outer sleeve which was previously described when referring to the syringe 130 of FIGs. 14-18.
Therefore, identical reference numerals will be used to de~cribe the outer sleeve 134 of FIGs. 19-23, and the details thereof will be omitted. Likewise, the screw threaded hub 136 and hypodermic needle 138 of syringe 160 are identical to those of the syringe 130~
Therefore, identical reference numerals will also be used to refer to hub 136 and needle 138.
As is best shown in FIG. 21, ~he inner cylinder 162 of the syringe 160 has a hexagonal cross-section comprising a plurality of contiguous sidewalls. Inner cylinder 162 also has an open flanged proximal end for receiving an evacuated phlebotomy tube (not showr,) and a substantially closed distal end wall. The hypodermic needle carrying hub 136 is retained within a distal bore formed through a neck 163 which extends from the distal end wall of inner cylinder 162, whereby one end of needle 138 projects outwardly from the inner cylinder, and the opposite end of needle 138 projects into the cylinder for communication with the phlebotomy id tube.
Coextensively formed with and projecting outwardly from the distal end of inner cylinder 162 are first and second series of short ramps 164 and 166 ~best illustrated in FIG. 22). Tbe first series of ramps 164 project outwardly in a first direction from the respective intersections of adjacent sidewalls which define hexagonal inner cylinder 162. A second series of ramps 166 are spaced proximally from ramps 164 and project outwardly in a second direction from the respective intersections of the sidewalls of inner cylinder 162. As is best shown in FIG~ 21, an angle oP
~3~ 2~
approximately 120 degrees is formed between the first and second directions in which the first and second series of ramps 164 and 166 respectively extend from the intersections of the sidewalls of inner cylinder 162. Ramps 164 slope upwardly in a proximally oriented direction, and ramps 166 slope upwardly in a distally oriented direction, such that the most elevated ends 164 and 166 oppose one another to establish a narrow, annular gap 168 in the space therebetween.
The operation of the syrin~e 160 is now described while continuing to refer to FIGs. 19-23 o~ the drawings. In FIG. 19, the outer sleeve 134 is located in the retracted position relative to inner sleeve 162, such that the annular rim 15~ of outer sleeve 134 is positioned proximally from and out of engagement with the ramps 164 and 166 of the inner cylinder 162. The inner cylinder and outer sleeve are connected together at their respective screw threaded necks 163 and 150, whereby to expose the hypodermic needle 138 for penetrating the skin of a patient so that a phlebotomy tube (not shown) may be infused with a sample of the patient's blood. After the last blood sample has been ;
taken, and in order to avoid an accidental needle 3~:~
strike, the outer sleeve 134 is grasped, below flanged end wall 148, and pulled to the axially extended position ~of FIG. 20) relative ~o inner cylinder 162.
The axial advancement of outer sleeve 134 causes a corresponding advancement of the rim 152, such th~t rim 152 travels up and over the proximally oriented series of ramps 166. The continued axial advancement of outer sleeve 134 relative to inner cylinder 162 will cause rim 152 to be snapped into the gap 168 between ramps 164 and 166. A positive self-locking feature is thereby established, because the rim 152 of outer sleeve 134 is securely and permanently retained within the gap 168 between the most elevated portions of ramps 164 and 166. ~ence~ the ramps 164 and 166 form stops to prevent both the continued axial advancement and possible detachment of the outer sleeve 134 from the inner cylinder 162 as well as an inadvertent return of the outer sleeve 134 to the retracted position of FIG.
l9o Therefore, a disposal cartridge is created ~in FIG. 20) having the inner cylinder 162 and outer sleeve 134 locked in the axially extended position with the hypodermic needle 138 completely surrounded and shielded, so that the syringe 160 may be safely handled while avoiding an accidental needle strike and the possible spread of a contagious disease.
~3~
3g It will be apparent that while preferred embodiments of the present invention has been shown and described, various modifications and changes may be made without departing from the true spirit and 5cope of the invention. Having thus set forth the preferred embodiments of this invention, what is claimed is:
Claims (10)
1. A shielded syringe assembly characterized by an inner syringe cylinder having an open proximal end and a substantially closed distal end, a hypodermic needle supported at and extending outwardly from said distal end, and an outer protective sleeve having an open proximal end and an opening in a substantially closed distal end, said outer sleeve coaxially aligned with and axially advanceable relative to said inner cylinder from a retracted position, where said needle projects outwardly through the opening in said sleeve, to an extended position, where said needle is located within and completely surrounded by said sleeve, said syringe assembly being further characterized by:
said inner cylinder having at least one ramp and one stop spaced axially from one another; and said outer sleeve having a lip located adjacent to the open proximal end thereof;
the continuous axial advancement of said outer sleeve from the retracted position to the extended position causing said lip to ride up the ramp of said inner cylinder and into the space between said ramp and said stop to thereby lock said outer sleeve in the extended position relative to said inner cylinder with said needle shielded by said outer sleeve.
said inner cylinder having at least one ramp and one stop spaced axially from one another; and said outer sleeve having a lip located adjacent to the open proximal end thereof;
the continuous axial advancement of said outer sleeve from the retracted position to the extended position causing said lip to ride up the ramp of said inner cylinder and into the space between said ramp and said stop to thereby lock said outer sleeve in the extended position relative to said inner cylinder with said needle shielded by said outer sleeve.
2. The syringe assembly recited in claim 1, further characterized in that said hypodermic needle is double ended, such that one end extends into the interior of said inner cylinder to communicate with a vacuum tube into which a fluid sample may be drawn and the opposite end extends outwardly from the distal end of said inner cylinder for penetrating the skin of a patient so as to withdraw the fluid sample.
3. The syringe assembly recited in claim 1, further characterized in that said hypodermic needle is carried by a removable screw threaded hub, said hub being located at the distal end of said inner cylinder, such that said needle is coaxially aligned with said inner cylinder and said outer sleeve.
4. The syringe assembly recited in claim 1, further characterized in that said inner cylinder has a hollow screw threaded neck extending outwardly from the distal end thereof for receiving said hypodermic needle therethrough, and said outer sleeve has a hollow screw threaded neck extending outwardly from the distal end thereof and surrounding the opening formed therein, the neck of said outer sleeve being sized to receive the neck of said inner cylinder therewithin when said outer sleeve is in the retracted position relative to said inner cylinder, such that said inner cylinder and said outer sleeve may be screwed together at their respective necks to releasably retain said needle extending outwardly of said outer cylinder.
5. The syringe assembly recited in claim 1, further characterized in that said inner cylinder has a series of ramps and a series of stops said stops being in spaced, parallel alignment with one another and extending around the periphery of said inner cylinder at the distal end thereof, and said ramps also being in spaced parallel alignment with one another and extending around the periphery of said inner cylinder, said series of ramps being spaced proximally from said series of stops.
6. The syringe assembly recited in claim 5, further characterized in that said series of ramps are spaced from and interspersed with respect to said series of stops.
7. The syringe assembly recited in claim 5, further characterized in that each ramp of said series of ramps and each stop of said series of stops extends axially along said inner cylinder and comprises an inclined portion, said series of ramps inclining in a distally oriented direction and said series of stops inclining in a proximally oriented direction.
8. The syringe assembly recited in claim 5, further characterized in that said inner cylinder has a hexagonal cross-section comprising a plurality of adjacent sidewalls, each ramp of said series of ramps projecting outwardly in a first direction from a respective intersection of a pair of adjacent sidewalls, and each stop from said series of stops projecting outwardly in a second direction from said respective intersection.
9. The syringe assembly recited in claim 1, 2, 3, 4, 5, 6, 7 or 8 further characterized in that said lip extends completely around the periphery of the proximal end of said outer sleeve.
10. The syringe assembly recited in claim 1, 2, 3, 4, 5, 6, 7 or 8 further characterized in that said inner cylinder has a raised portion lying below and between said ramp and said stop, the lip of said outer sleeve being received upon said raised portion after said outer sleeve is moved axially to the advanced position and said lip rides up and over said ramp.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US043,042 | 1987-04-27 | ||
US07/043,042 US4758231A (en) | 1987-04-27 | 1987-04-27 | Shielded safety syringe |
Publications (1)
Publication Number | Publication Date |
---|---|
CA1308321C true CA1308321C (en) | 1992-10-06 |
Family
ID=21925150
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA000564995A Expired - Fee Related CA1308321C (en) | 1987-04-27 | 1988-04-25 | Shielded safety syringe |
Country Status (12)
Country | Link |
---|---|
US (5) | US4758231A (en) |
EP (1) | EP0288879B1 (en) |
JP (1) | JP2796805B2 (en) |
KR (1) | KR880012243A (en) |
AT (1) | ATE81787T1 (en) |
BR (1) | BR8802014A (en) |
CA (1) | CA1308321C (en) |
DE (1) | DE3875516T2 (en) |
DK (1) | DK226988A (en) |
MX (1) | MX165984B (en) |
NZ (1) | NZ224372A (en) |
ZA (1) | ZA882903B (en) |
Families Citing this family (223)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA1285441C (en) * | 1987-03-17 | 1991-07-02 | Roy D. Mcnaughton | Mcnaughton syringe shield type b |
US4904242A (en) * | 1987-04-29 | 1990-02-27 | Kulli John C | Phlebotomy set with safety retracting needle |
US4907600A (en) * | 1987-04-29 | 1990-03-13 | Spencer Treesa A | Blood collector cylinder with needle ejector |
US4813426A (en) * | 1987-11-09 | 1989-03-21 | Habley Medical Technology Corporation | Shielded safety syringe having a retractable needle |
US4774964A (en) * | 1987-11-18 | 1988-10-04 | Applied Plastics Technology, Inc. | Disposable blood collection device |
US4892107A (en) * | 1988-01-05 | 1990-01-09 | Habley Medical Technology Corp. | Single use, safety blood collection device |
US4867172A (en) * | 1988-02-23 | 1989-09-19 | Habley Medical Technology Corporation | Collapsible blood collector |
US5085639A (en) * | 1988-03-01 | 1992-02-04 | Ryan Medical, Inc. | Safety winged needle medical devices |
US5067945A (en) * | 1988-03-01 | 1991-11-26 | Ryan Medical, Inc. | Safety needled medical devices capable of one-handed manipulation |
US5059185A (en) * | 1988-03-01 | 1991-10-22 | Ryan Medical, Inc. | Safety needled medical devices |
US4923445A (en) * | 1988-03-01 | 1990-05-08 | Ryan Medical, Inc. | Safety needled medical devices |
US5088982A (en) * | 1988-03-01 | 1992-02-18 | Ryan Medical, Inc. | Safety winged needle medical devices |
US4923446A (en) * | 1988-04-14 | 1990-05-08 | Page Mary J | Shield for devices capable of penetrating skin |
US4942881A (en) * | 1988-04-26 | 1990-07-24 | Al Sioufi Habib | IV needle holder |
US4951685A (en) * | 1988-05-12 | 1990-08-28 | Blair Paul A | Blood drawing system |
US4871355A (en) * | 1988-05-17 | 1989-10-03 | Steven Kikkawa | Injury resistant needle and blood collection tube holder |
US4998925A (en) * | 1988-05-24 | 1991-03-12 | Al Sioufi Habib | I. V. connector |
US4932940A (en) * | 1988-06-06 | 1990-06-12 | Walker Cedric F | Needle guard device |
US5169392A (en) * | 1988-06-28 | 1992-12-08 | Sherwood Medical Company | Combined syringe and needle shield and method of manufacture |
US5217437A (en) * | 1988-06-28 | 1993-06-08 | Sherwood Medical Company | Needle protecting device |
US5053018A (en) * | 1988-06-28 | 1991-10-01 | Sherwood Medical Company | Combined syringe and needle shield and method of manufacture |
US5160326A (en) * | 1988-06-28 | 1992-11-03 | Sherwood Medical Company | Combined syringe and needle shield |
US5312370A (en) * | 1988-06-28 | 1994-05-17 | Sherwood Medical Company | Combined syringe and needle shield |
US5127910A (en) * | 1988-06-28 | 1992-07-07 | Sherwood Medical Company | Combined syringe and needle shield and method of manufacture |
US5156599A (en) * | 1988-06-28 | 1992-10-20 | Sherwood Medical Company | Syringe and sliding locking needle shield |
US5088988A (en) * | 1988-06-28 | 1992-02-18 | Sherwood Medical Company | Combined dental syringe and needle shield |
US5147326A (en) * | 1988-06-28 | 1992-09-15 | Sherwood Medical Company | Combined syringe and needle shield and method of manufacture |
US4846796A (en) * | 1988-07-27 | 1989-07-11 | Rialto Enterprises, Ltd. | Protective system for safe disposition of a syringe and hypodermic injection device carried thereon |
US4947863A (en) * | 1988-08-30 | 1990-08-14 | Habley Medical Technology Corporation | Energy-dissipating, safety blood collection tube holder |
DK515688D0 (en) * | 1988-09-16 | 1988-09-16 | Tina Moeller Noergaard | BLOOD TEST EQUIPMENT |
US4900310A (en) * | 1988-10-07 | 1990-02-13 | International Medication Systems Limited | Protective device for cannula used to draw blood |
US4911706A (en) * | 1988-10-14 | 1990-03-27 | Regents Of The University Of Minnesota | Automatic needle cover |
US4929237A (en) * | 1988-11-07 | 1990-05-29 | David Medway | Hypodermic needle protection device |
US5030209A (en) * | 1988-11-09 | 1991-07-09 | Medical Safety Products, Inc. | Holder for double ended blood collection retractable needle |
JPH0415226Y2 (en) * | 1988-12-07 | 1992-04-06 | ||
US4917101A (en) * | 1989-02-27 | 1990-04-17 | Horn Daniel P | Vena puncture device and method |
US5843041A (en) * | 1989-03-02 | 1998-12-01 | Hake; Lawrence W. | Hypodermic needle guard and method to prevent needle stick injuries |
US5314414A (en) * | 1989-03-02 | 1994-05-24 | Needlepoint Guard, Inc. | Hypodermic needle guard and method to prevent needle stick injuries |
US6017329A (en) * | 1989-03-02 | 2000-01-25 | Hake; Lawrence W. | Hypodermic needle guard and method to prevent needle stick injuries |
CA1337167C (en) * | 1989-03-14 | 1995-10-03 | Eastman Kodak Company | Needle housing with retractable needle |
US4976699A (en) * | 1989-05-24 | 1990-12-11 | Gold Steven K | Needle and safety cover assembly for syringes and the like |
US5204062A (en) * | 1989-09-05 | 1993-04-20 | Surgicot Incorporated | Bowie-dick test device |
US4998920A (en) * | 1989-10-11 | 1991-03-12 | Delores Johnson | Protective assembly for hypodermic syringe devices |
US5120311A (en) * | 1989-11-01 | 1992-06-09 | Medical Safety Products, Inc. | Blood collection tube holder |
US5098403A (en) * | 1989-12-05 | 1992-03-24 | Infusaid Inc. | Universal needle guard |
US5013302A (en) * | 1989-12-26 | 1991-05-07 | Schmidt Industries, Inc. | Hypodermic needle sheath |
WO1991011212A1 (en) * | 1990-02-02 | 1991-08-08 | Gerard Philip Gilliland | A retractable sharp |
US5021049A (en) * | 1990-02-26 | 1991-06-04 | Howard Richard S | Needle sheath holder with seepage precluding engagement zones |
US5053017A (en) * | 1990-02-28 | 1991-10-01 | Chamuel Steven R | Hypodermic needle safety clip |
FR2666511B2 (en) * | 1990-03-08 | 1994-11-04 | Floquet Nicole | PROTECTION SYSTEM FOR NEEDLE FOR BLOOD TAKING PERFUSION, TRANSFUSION, SYRINGE, CATHETER, .... |
US5057079A (en) * | 1990-04-03 | 1991-10-15 | Roland Tiemann | Sheathing device for after use protection from a syringe needle |
US5624400A (en) * | 1990-05-09 | 1997-04-29 | Safety Syringes, Inc. | Disposable self-shielding aspirating syringe |
US5108378A (en) * | 1990-05-09 | 1992-04-28 | Safety Syringes, Inc. | Disposable self-shielding hypodermic syringe |
US5131405A (en) * | 1990-09-18 | 1992-07-21 | Becton, Dickinson And Company | Universal blood draw safety holder |
US5067948A (en) * | 1990-09-27 | 1991-11-26 | Habley Medical Technology Corporation | Safety, packaging, injection and disposal system for pre-filled pharmaceutical vials |
US5053010A (en) * | 1990-10-03 | 1991-10-01 | Triad Technology | Safety syringe with retractable needle |
US5108376A (en) * | 1990-11-14 | 1992-04-28 | Safetyject | Retractable intravenous needle assembly |
US5259841A (en) * | 1991-02-25 | 1993-11-09 | Gemini Trade Overseas Ltd. | Safety syringe |
US5306258A (en) * | 1991-04-03 | 1994-04-26 | Fuente Ricardo L De | Safety syringe and method of using same |
DK91991D0 (en) * | 1991-05-15 | 1991-05-15 | Stig Eric Weibel | BLOOD SAMPLING TOOL |
US5401246A (en) * | 1991-06-13 | 1995-03-28 | U.S. Medical Instruments, Inc. | Retractable syringe with a closed barrel |
US5205824A (en) * | 1991-06-13 | 1993-04-27 | Mazur Matthew S | Retractable syringe with a closed barrel |
US5109874A (en) * | 1991-07-18 | 1992-05-05 | Bellingham Medical Inc. | Wound patch |
EP0560977B1 (en) * | 1991-10-04 | 1998-12-30 | Retrax, Inc. | Retractable syringe |
US5178157A (en) * | 1992-01-14 | 1993-01-12 | Fanlo Ramon G | Phlebotomy device and method of use thereof |
US5324302A (en) * | 1992-10-13 | 1994-06-28 | Sherwood Medical Company | Lancet with locking cover |
FR2686242A1 (en) * | 1992-01-22 | 1993-07-23 | Barbier Georges | BLOOD SAMPLING DEVICE FOR AIR VACUUM TUBE. |
US5403288A (en) * | 1992-02-13 | 1995-04-04 | Stanners; Sydney D. | Safety sleeve for dental syringe |
US5593391A (en) * | 1992-02-13 | 1997-01-14 | Stanners; Sydney D. | Ampule safety syringe |
JPH05228425A (en) * | 1992-02-19 | 1993-09-07 | Asahi Glass Co Ltd | Coated product |
US5312347A (en) * | 1992-02-27 | 1994-05-17 | Osborne Barbara J | Hypodermic needle shield |
IL101680A (en) * | 1992-04-23 | 1995-08-31 | Travenol Lab Israel Ltd | Blood sampling device |
US5215535A (en) * | 1992-05-20 | 1993-06-01 | Gettig Technologies Incorporated | Needle protector apparatus |
US5304149A (en) * | 1992-06-12 | 1994-04-19 | Becton, Dickinson And Company | Medical device with a lockable needle shield |
US5338303A (en) * | 1992-09-08 | 1994-08-16 | Design And Engineering Associates | Safety syringes |
JPH0631747U (en) * | 1992-10-06 | 1994-04-26 | シエン ツオ チョアン | Needle protection cap |
US5267977A (en) * | 1992-10-29 | 1993-12-07 | Feeney Jr Richard J | No-stick syringe |
US5795336A (en) * | 1993-02-11 | 1998-08-18 | Beech Medical Products, Inc. | Automatic needle protector having features for facilitating assembly |
US5328473A (en) * | 1993-04-28 | 1994-07-12 | Becton, Dickinson And Company | Disposable needle holder |
US5344407A (en) * | 1993-05-04 | 1994-09-06 | Ryan Dana W | Safety holder for pre-filled disposable syringe cartridge |
US5423765A (en) * | 1993-05-06 | 1995-06-13 | Smiths Industries Medical Systems, Inc. | Removable safety needle sheath |
JP3095158B2 (en) * | 1993-07-23 | 2000-10-03 | 株式会社ニッショー | Syringe assembly |
US6280401B1 (en) * | 1993-08-23 | 2001-08-28 | Sakharam D. Mahurkar | Hypodermic needle assembly |
US5498244A (en) * | 1993-09-22 | 1996-03-12 | American Home Products Corporation | Safety guard for medical instruments |
DE4332307C1 (en) * | 1993-09-23 | 1994-09-29 | Heraeus Kulzer Gmbh | Syringe for the metered dispensing of viscous materials, especially of dental materials |
US5368568A (en) * | 1993-10-12 | 1994-11-29 | Pitts; Raymond H. | Disabling hypodermic syringe |
US5336199A (en) * | 1993-11-12 | 1994-08-09 | Castillo Leo S | Medical needle and needle sheath assembly |
US5423758A (en) * | 1993-12-16 | 1995-06-13 | Shaw; Thomas J. | Retractable fluid collection device |
US5456668A (en) * | 1994-01-14 | 1995-10-10 | F. H. Faulding & Co. Limited | Retractable venipuncture catheter needle and receptacle |
WO1995021647A1 (en) * | 1994-02-14 | 1995-08-17 | Medicorp Holding S.A. | Injector module for a syringe, and pre-filled syringe provided therewith |
US5709669A (en) * | 1994-03-29 | 1998-01-20 | Haining; Michael L. | Blood drawing device |
EP0799065B1 (en) * | 1994-07-19 | 2001-11-28 | Novo Nordisk A/S | Needle magazine |
US5437639A (en) * | 1994-09-19 | 1995-08-01 | Malenchek; Robert | Needle protective sheath device |
IL112339A (en) * | 1995-01-13 | 1999-07-14 | Travenol Lab Israel Ltd | Blood sampling apparatus |
US5687740A (en) * | 1995-06-29 | 1997-11-18 | Becton, Dickinson And Company | Needle holder assembly including sleeve of thermoplastic elastomer |
US7300416B2 (en) * | 1995-08-22 | 2007-11-27 | Specialized Health Products International | Pre-filled retractable needle injection ampoules |
US5569210A (en) * | 1995-11-06 | 1996-10-29 | Moen; Michael | Multiple draw syringe |
US5776076A (en) * | 1996-03-11 | 1998-07-07 | Chen; Long-Hsiung | Safety vacuum syringe for blood sampling |
DE19617000C1 (en) * | 1996-04-27 | 1998-01-22 | Sarstedt Walter Geraete | Blood collection device with a holder having a cannula |
IL118497A (en) | 1996-05-30 | 2002-08-14 | Travenol Lab Israel Ltd | Fluid sampling apparatus |
US5743887A (en) * | 1996-07-16 | 1998-04-28 | Brattesani; Steven J. | Syringe safety sleeve adapter apparatus |
US5746215A (en) * | 1996-11-01 | 1998-05-05 | U.S. Medical Instruments, Inc. | IV infusion or collection device with extendable and retractable needle |
US5772636A (en) * | 1996-12-02 | 1998-06-30 | Becton Dickinson And Company | Catheter assembly with interlocking telescoping needle shield |
US5800395A (en) | 1996-12-05 | 1998-09-01 | Mdc Investment Holdings, Inc. | Medical device with retractable needle |
US6004278A (en) * | 1996-12-05 | 1999-12-21 | Mdc Investment Holdings, Inc. | Fluid collection device with retractable needle |
US5769826A (en) * | 1997-03-14 | 1998-06-23 | Johnson; Kenneth H. | Spring loaded retractable cannula blood drawing device |
US6569115B1 (en) | 1997-08-28 | 2003-05-27 | Mdc Investment Holdings, Inc. | Pre-filled retractable needle injection device |
CN1083706C (en) * | 1997-09-16 | 2002-05-01 | 陈隆雄 | Human engineering safe vacuumatic hemospat |
US6004296A (en) | 1997-09-30 | 1999-12-21 | Becton Dickinson France, S.A. | Lockable safety shield assembly for a prefillable syringe |
WO1999023947A1 (en) * | 1997-11-12 | 1999-05-20 | Mdc Investment Holdings, Inc. | Fluid collection device with captured rectractable needle |
US6949111B2 (en) | 1998-02-13 | 2005-09-27 | Steven Schraga | Lancet device |
EP1069922A1 (en) * | 1998-04-06 | 2001-01-24 | Sleeping Dog Intellectual Property (Pty.) Ltd | A device for drawing blood |
US6319233B1 (en) | 1998-04-17 | 2001-11-20 | Becton, Dickinson And Company | Safety shield system for prefilled syringes |
US6679864B2 (en) | 1998-04-17 | 2004-01-20 | Becton Dickinson And Company | Safety shield system for prefilled syringes |
US6719730B2 (en) | 1998-04-17 | 2004-04-13 | Becton, Dickinson And Company | Safety shield system for prefilled syringes |
WO2000035367A1 (en) * | 1998-12-15 | 2000-06-22 | Mdc Investment Holdings, Inc. | Fluid collection device with captured retractable needle |
US6669671B1 (en) | 1998-12-22 | 2003-12-30 | Owais Mohammad | Retractable needle with dual locking mechanisms |
US6379337B1 (en) | 1998-12-22 | 2002-04-30 | Owais Mohammad M. B. B. S. | Retractable safety needles for medical applications |
US6302868B1 (en) | 1998-12-22 | 2001-10-16 | Owais Mohammad | Retractable hypodermic needle assembly and method of making the same |
US6235005B1 (en) * | 1998-12-28 | 2001-05-22 | Ethicon, Inc. | Positive engagement-disengagement catheter sleeve |
GB2349823A (en) * | 1999-04-21 | 2000-11-15 | Nmt Group Plc | Phlebotomy set |
US8814896B2 (en) | 1999-11-02 | 2014-08-26 | Stat Medical Devices, Inc. | Single use lancet assembly |
US20050070945A1 (en) * | 1999-11-02 | 2005-03-31 | Steven Schraga | Single use lancet assembly |
US6776775B1 (en) | 1999-12-23 | 2004-08-17 | Owais Mohammad | Hypodermic syringe needle assembly and method of making the same |
US6322575B1 (en) * | 2000-01-05 | 2001-11-27 | Steven Schraga | Lancet depth adjustment assembly |
GB0003790D0 (en) * | 2000-02-18 | 2000-04-05 | Astrazeneca Uk Ltd | Medical device |
DE10009816A1 (en) * | 2000-03-01 | 2001-10-18 | Disetronic Licensing Ag | Needle protection device for an injection device |
US6475194B2 (en) | 2000-04-05 | 2002-11-05 | Gem Plastics, Inc. | Safety syringe |
US6471677B2 (en) | 2000-04-06 | 2002-10-29 | Gem Plastics, Inc. | Fluid collection device with protective shield |
US6210374B1 (en) * | 2000-04-20 | 2001-04-03 | Robert Malencheck | Needle protective sheath device |
RU2270033C2 (en) * | 2000-04-26 | 2006-02-20 | Юнитрэкт Пти Лтд | Disposable syringe |
USD445183S1 (en) | 2000-04-28 | 2001-07-17 | Mdc Investment Holdings, Inc. | Needle-bearing medical device |
US6416323B1 (en) * | 2000-05-11 | 2002-07-09 | Safety Syringes, Inc. | Aspirating dental syringe with needle shield |
US6524276B1 (en) | 2000-06-05 | 2003-02-25 | Mdc Investment Holdings, Inc. | Fluid collection device having tilting retractable needle |
US6790199B1 (en) * | 2000-09-28 | 2004-09-14 | North American Medical Products, Inc. | Needle protective assembly for multi-draw needle |
US6524279B1 (en) * | 2000-12-22 | 2003-02-25 | Jack W. Shields | Shielded assembly for blood collection in vacuum tubes |
SG96625A1 (en) * | 2001-05-22 | 2003-06-16 | Chang Kuo Long | Needle closure structure for injection syringe |
AU2002310432A1 (en) | 2001-06-13 | 2003-06-23 | Steven Schraga | Single use lancet device |
US6814707B2 (en) * | 2001-06-20 | 2004-11-09 | Margie M. Collins | Blood collection safety device |
US6918918B1 (en) | 2001-08-14 | 2005-07-19 | Steven Schraga | Single use lancet assembly |
US8048097B2 (en) | 2001-08-14 | 2011-11-01 | Steven Schraga | Single use lancet assembly |
EP1300169A1 (en) * | 2001-10-08 | 2003-04-09 | Sergio Restelli | Blood sample collection apparatus with a simplified safety device |
US6984223B2 (en) | 2001-11-13 | 2006-01-10 | Becton, Dickinson And Company | Needle safety device |
US8715309B2 (en) | 2002-04-29 | 2014-05-06 | Steven Schraga | Lancet device |
US20040039407A1 (en) * | 2002-04-29 | 2004-02-26 | Steven Schraga | Lancet device |
US6761704B2 (en) * | 2002-05-02 | 2004-07-13 | Becton, Dickinson And Company | Safety blood collection needle assembly |
US6811547B2 (en) | 2002-07-22 | 2004-11-02 | Becton, Dickinson & Company | Needle shielding assembly |
US7300421B1 (en) | 2002-11-26 | 2007-11-27 | Suzanne L. Lowry | Safety syringe and safety syringe adapter |
US20040111065A1 (en) * | 2002-12-10 | 2004-06-10 | Ming-Jeng Shue | Disposable syringe |
DE20301575U1 (en) * | 2003-01-31 | 2003-06-05 | Sarstedt Ag & Co | Blood collection device with a holder having a cannula |
US7041066B2 (en) * | 2003-03-13 | 2006-05-09 | Becton, Dickinson & Company | Needle assembly |
US6991608B2 (en) * | 2003-04-03 | 2006-01-31 | Becton, Dickinson And Company | Medical assembly |
TWI250878B (en) * | 2003-04-22 | 2006-03-11 | Ming-Jeng Shiu | Disposable syringe |
US7261698B2 (en) * | 2003-04-24 | 2007-08-28 | Sherwood Services Ag | Transfer needle safety apparatus |
US7285110B2 (en) | 2003-06-10 | 2007-10-23 | P. Rowan Smith, Jr. | Retractable hypodermic safety syringe |
US6994694B2 (en) * | 2003-08-19 | 2006-02-07 | Saftey 1St Medical, Inc. | Apparatus for retaining concentric parts within one another |
JP3100042U (en) * | 2003-08-26 | 2004-04-30 | アルプス電気株式会社 | Television tuner |
IL157984A (en) | 2003-09-17 | 2015-02-26 | Dali Medical Devices Ltd | Autoneedle |
IL157981A (en) | 2003-09-17 | 2014-01-30 | Elcam Medical Agricultural Cooperative Ass Ltd | Auto-injector |
US7226434B2 (en) | 2003-10-31 | 2007-06-05 | Tyco Healthcare Group Lp | Safety shield |
US20050148944A1 (en) * | 2003-12-24 | 2005-07-07 | Hsin-Po Hsieh | Syringe safety sleeve |
US7207975B2 (en) * | 2004-02-12 | 2007-04-24 | Miller Stuart H | Needle stick protection device |
US7662134B2 (en) * | 2004-02-12 | 2010-02-16 | Miller Stuart H | Needle stick protection device |
IL160891A0 (en) | 2004-03-16 | 2004-08-31 | Auto-mix needle | |
US20060100589A1 (en) * | 2004-08-10 | 2006-05-11 | Biotop Technology Co. Ltd. | Syringe safety sleeve |
US7731678B2 (en) * | 2004-10-13 | 2010-06-08 | Hyprotek, Inc. | Syringe devices and methods for mixing and administering medication |
US7850650B2 (en) | 2005-07-11 | 2010-12-14 | Covidien Ag | Needle safety shield with reset |
US7905857B2 (en) | 2005-07-11 | 2011-03-15 | Covidien Ag | Needle assembly including obturator with safety reset |
US7828773B2 (en) | 2005-07-11 | 2010-11-09 | Covidien Ag | Safety reset key and needle assembly |
US20060178686A1 (en) * | 2005-02-07 | 2006-08-10 | Steven Schraga | Single use lancet device |
US20060195062A1 (en) * | 2005-02-25 | 2006-08-31 | Gremel Robert F | Apparatus for locking concentric components in alignment |
US8372044B2 (en) * | 2005-05-20 | 2013-02-12 | Safety Syringes, Inc. | Syringe with needle guard injection device |
JP3928025B2 (en) | 2005-05-25 | 2007-06-13 | 株式会社共伸 | Medical needle |
US20060276747A1 (en) * | 2005-06-06 | 2006-12-07 | Sherwood Services Ag | Needle assembly with removable depth stop |
US20060276772A1 (en) * | 2005-06-06 | 2006-12-07 | Sherwood Services Ag | Bayonet release of safety shield for needle tip |
FI20055376A0 (en) * | 2005-07-01 | 2005-07-01 | Perlos Oyj | needle Protective |
US7731692B2 (en) | 2005-07-11 | 2010-06-08 | Covidien Ag | Device for shielding a sharp tip of a cannula and method of using the same |
US7654735B2 (en) | 2005-11-03 | 2010-02-02 | Covidien Ag | Electronic thermometer |
BR122017023450B8 (en) | 2005-11-09 | 2021-06-22 | Hyprotek Inc | syringe device |
US8852167B2 (en) * | 2005-12-01 | 2014-10-07 | Bayer Medical Care Inc. | Medical connector |
US10058656B2 (en) * | 2006-10-24 | 2018-08-28 | Pmt Partners, Llc | Syringe with rotatable element, systems including the syringe, and associated methods |
US9259174B2 (en) * | 2007-04-20 | 2016-02-16 | Stat Medical Devices, Inc. | Retractable fluid collection device |
US20090054876A1 (en) * | 2007-08-24 | 2009-02-26 | German Borodulin | Compact ready-to-use urethral catheter assembly with means for injecting therapeutic liquid into urethral channel |
US8465515B2 (en) * | 2007-08-29 | 2013-06-18 | Ethicon Endo-Surgery, Inc. | Tissue retractors |
WO2009044401A2 (en) | 2007-10-02 | 2009-04-09 | Yossi Gross | External drug pump |
US10420880B2 (en) * | 2007-10-02 | 2019-09-24 | West Pharma. Services IL, Ltd. | Key for securing components of a drug delivery system during assembly and/or transport and methods of using same |
US9656019B2 (en) | 2007-10-02 | 2017-05-23 | Medimop Medical Projects Ltd. | Apparatuses for securing components of a drug delivery system during transport and methods of using same |
US9522097B2 (en) | 2007-10-04 | 2016-12-20 | Hyprotek, Inc. | Mixing/administration syringe devices, protective packaging and methods of protecting syringe handlers |
US8002737B2 (en) | 2007-10-04 | 2011-08-23 | Hyprotek, Inc. | Mixing/administration syringe devices, protective packaging and methods of protecting syringe handlers |
FR2922112B1 (en) * | 2007-10-11 | 2009-12-04 | Rexam Pharma La Verpilliere | SAFETY DEVICE FOR A LIQUID INJECTION SYRINGE AND SYRINGE ASSEMBLY COMPRISING SAID DEVICE |
US8357104B2 (en) | 2007-11-01 | 2013-01-22 | Coviden Lp | Active stylet safety shield |
US8128559B2 (en) | 2007-11-26 | 2012-03-06 | Ethicon Endo-Surgery, Inc. | Tissue retractors |
US8517931B2 (en) | 2007-11-26 | 2013-08-27 | Ethicon Endo-Surgery, Inc. | Tissue retractors |
CA2645972A1 (en) * | 2007-12-14 | 2009-06-14 | Tyco Healthcare Group Lp | Safety needle assembly |
CA2646261A1 (en) * | 2007-12-14 | 2009-06-14 | Tyco Healthcare Group Lp | Blood collection device with tube retaining structure |
DE602008002806D1 (en) | 2007-12-20 | 2010-11-11 | Tyco Healthcare | Locking cap arrangement with spring-loaded collar |
US20090216154A1 (en) * | 2008-02-21 | 2009-08-27 | Bencha International Group. Inc | Automatically retractable safety blood sampler |
JP5726070B2 (en) | 2008-06-06 | 2015-05-27 | バイエル メディカル ケア インコーポレーテッド | Apparatus and method for delivering fluid infusion boluses to patients and handling harmful fluids |
GB0815748D0 (en) * | 2008-08-29 | 2008-10-08 | Liversidge Barry P | Medical needle assembly |
US8167820B2 (en) * | 2009-03-20 | 2012-05-01 | Mahurkar Sakharam D | Retractable needle-safety blood sampling device |
US20100286558A1 (en) * | 2009-04-08 | 2010-11-11 | Stat Medical Devices, Inc. | Fluid collection/injection device having quick release/removable double-ended needle and safety system |
JP5621139B2 (en) * | 2009-07-01 | 2014-11-05 | 川澄化学工業株式会社 | Blood collection set and sampling holder |
DE102010008806A1 (en) * | 2010-02-22 | 2011-08-25 | Borgmann, Frank, 42283 | Needle shield device for medical spraying, has transparent guard cylinder that is manufactured from glass, metal and plastic in different colors and formed as cylinder with scale for amount of liquid to be provided |
US10092230B2 (en) | 2011-04-29 | 2018-10-09 | Stat Medical Devices, Inc. | Fluid collection/injection device having safety needle assembly/cover and safety system and method |
CN102525488B (en) * | 2011-12-01 | 2013-09-25 | 上海金塔医用器材有限公司 | Disposable sterile retraction safety blood sampling needle |
US9078978B2 (en) | 2011-12-28 | 2015-07-14 | Stat Medical Devices, Inc. | Needle assembly with safety system for a syringe or fluid sampling device and method of making and using the same |
US9889288B2 (en) | 2012-06-07 | 2018-02-13 | Bayer Healthcare Llc | Tubing connectors |
US9125976B2 (en) | 2012-06-07 | 2015-09-08 | Bayer Medical Care Inc. | Shield adapters |
US9393441B2 (en) | 2012-06-07 | 2016-07-19 | Bayer Healthcare Llc | Radiopharmaceutical delivery and tube management system |
US8585611B1 (en) * | 2012-08-03 | 2013-11-19 | Allen J. Raymond | Safety blood collector system |
US10149943B2 (en) | 2015-05-29 | 2018-12-11 | West Pharma. Services IL, Ltd. | Linear rotation stabilizer for a telescoping syringe stopper driverdriving assembly |
US9987432B2 (en) | 2015-09-22 | 2018-06-05 | West Pharma. Services IL, Ltd. | Rotation resistant friction adapter for plunger driver of drug delivery device |
US10576207B2 (en) | 2015-10-09 | 2020-03-03 | West Pharma. Services IL, Ltd. | Angled syringe patch injector |
JP7017512B2 (en) | 2015-10-09 | 2022-02-08 | ウェスト ファーマ サービシーズ イスラエル リミテッド | Bending fluid path type accessories for filled fluid containers |
US11311674B2 (en) | 2016-01-21 | 2022-04-26 | West Pharma. Services IL, Ltd. | Medicament delivery device comprising a visual indicator |
CN109219456B (en) | 2016-01-21 | 2020-05-15 | 西医药服务以色列有限公司 | Force containment in autoinjectors |
EP3405229A1 (en) | 2016-01-21 | 2018-11-28 | West Pharma. Services Il, Ltd. | Needle insertion and retraction mechanism |
USD806246S1 (en) | 2016-02-25 | 2017-12-26 | Steven Schraga | Lancet cover |
US11389597B2 (en) | 2016-03-16 | 2022-07-19 | West Pharma. Services IL, Ltd. | Staged telescopic screw assembly having different visual indicators |
CN109562229B (en) | 2016-08-01 | 2021-07-13 | 西医药服务以色列有限公司 | Anti-rotation medicine barrel pin |
JP6921997B2 (en) | 2017-05-30 | 2021-08-18 | ウェスト ファーマ サービシーズ イスラエル リミテッド | Modular drive train for wearable syringes |
JP2020192079A (en) * | 2019-05-28 | 2020-12-03 | 株式会社トップ | Blood sampling holder |
CN110236567B (en) * | 2019-06-18 | 2022-05-31 | 杭州医学院 | Blood sampling device |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2571734A (en) * | 1948-06-26 | 1951-10-16 | Tryon S Lindabury | Temperature regulating and control valve |
US2571653A (en) * | 1950-02-25 | 1951-10-16 | Bastien Victor Gerard | Syringe |
DE1166419B (en) * | 1958-09-03 | 1964-03-26 | Dr Fritz Linder | Injection syringe |
US3304934A (en) * | 1964-09-29 | 1967-02-21 | Dionisio O Bautista | Blood drawing device |
US3890971A (en) * | 1973-10-23 | 1975-06-24 | Thomas A Leeson | Safety syringe |
US4356822A (en) * | 1980-10-17 | 1982-11-02 | Winstead Hall Deborah | Syringe assembly |
US4425120A (en) * | 1982-04-15 | 1984-01-10 | Sampson Norma A | Shielded hypodermic syringe |
US4573976A (en) * | 1984-05-24 | 1986-03-04 | Dolores A. Smith | Shielded needle |
US4631057A (en) * | 1985-12-17 | 1986-12-23 | Dolores A. Smith | Shielded needle |
US4655751A (en) * | 1986-02-14 | 1987-04-07 | Harbaugh John T | Liquid dispensing and receiving syringe |
US4681567A (en) * | 1986-04-03 | 1987-07-21 | Masters Edwin J | Syringe with safety sheath |
US4666435A (en) * | 1986-05-22 | 1987-05-19 | Braginetz Paul A | Shielded medical syringe |
US4702738A (en) * | 1986-05-22 | 1987-10-27 | Spencer Treesa A | Disposable hypodermic syringe and needle combination having retractable, accident preventing sheath |
US4737144A (en) * | 1987-03-09 | 1988-04-12 | Choksi Pradip V | Syringe with selectively exposed and enveloped needle |
-
1987
- 1987-04-27 US US07/043,042 patent/US4758231A/en not_active Ceased
- 1987-11-09 US US07/118,767 patent/US4790827A/en not_active Expired - Lifetime
-
1988
- 1988-04-19 DE DE8888106218T patent/DE3875516T2/en not_active Expired - Fee Related
- 1988-04-19 AT AT88106218T patent/ATE81787T1/en not_active IP Right Cessation
- 1988-04-19 EP EP88106218A patent/EP0288879B1/en not_active Expired - Lifetime
- 1988-04-25 CA CA000564995A patent/CA1308321C/en not_active Expired - Fee Related
- 1988-04-25 ZA ZA882903A patent/ZA882903B/en unknown
- 1988-04-26 NZ NZ224372A patent/NZ224372A/en unknown
- 1988-04-26 MX MX011241A patent/MX165984B/en unknown
- 1988-04-26 JP JP63103717A patent/JP2796805B2/en not_active Expired - Fee Related
- 1988-04-26 DK DK226988A patent/DK226988A/en not_active Application Discontinuation
- 1988-04-27 KR KR1019880004749A patent/KR880012243A/en not_active Application Discontinuation
- 1988-04-27 BR BR8802014A patent/BR8802014A/en not_active IP Right Cessation
- 1988-07-11 US US07/216,957 patent/US4915702A/en not_active Expired - Lifetime
- 1988-07-11 US US07/217,369 patent/US4892523A/en not_active Expired - Lifetime
-
1989
- 1989-03-31 US US07/332,520 patent/USRE33585E/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
NZ224372A (en) | 1991-01-29 |
ATE81787T1 (en) | 1992-11-15 |
DK226988D0 (en) | 1988-04-26 |
EP0288879A3 (en) | 1989-01-25 |
DE3875516D1 (en) | 1992-12-03 |
US4915702A (en) | 1990-04-10 |
US4758231A (en) | 1988-07-19 |
ZA882903B (en) | 1989-01-25 |
BR8802014A (en) | 1988-11-29 |
MX165984B (en) | 1992-12-15 |
KR880012243A (en) | 1988-11-26 |
EP0288879B1 (en) | 1992-10-28 |
JPS63317160A (en) | 1988-12-26 |
EP0288879A2 (en) | 1988-11-02 |
DE3875516T2 (en) | 1993-05-19 |
DK226988A (en) | 1988-10-28 |
US4790827A (en) | 1988-12-13 |
JP2796805B2 (en) | 1998-09-10 |
US4892523A (en) | 1990-01-09 |
USRE33585E (en) | 1991-05-07 |
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Legal Events
Date | Code | Title | Description |
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MKLA | Lapsed |