CA2672844A1 - Single-use syringe - Google Patents

Single-use syringe Download PDF

Info

Publication number
CA2672844A1
CA2672844A1 CA002672844A CA2672844A CA2672844A1 CA 2672844 A1 CA2672844 A1 CA 2672844A1 CA 002672844 A CA002672844 A CA 002672844A CA 2672844 A CA2672844 A CA 2672844A CA 2672844 A1 CA2672844 A1 CA 2672844A1
Authority
CA
Canada
Prior art keywords
barrel
rings
syringe according
needle
plunger
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.)
Granted
Application number
CA002672844A
Other languages
French (fr)
Other versions
CA2672844C (en
Inventor
Lourdes Gramage Pina
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of CA2672844A1 publication Critical patent/CA2672844A1/en
Application granted granted Critical
Publication of CA2672844C publication Critical patent/CA2672844C/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • A61M5/50—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
    • A61M5/5013—Means for blocking the piston or the fluid passageway to prevent illegal refilling of a syringe
    • 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
    • A61M5/3129—Syringe barrels
    • A61M2005/3131—Syringe barrels specially adapted for improving sealing or sliding
    • 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
    • A61M5/5066—Means for preventing re-use by disconnection of piston and piston-rod
    • A61M2005/5073—Means for preventing re-use by disconnection of piston and piston-rod by breaking or rupturing the connection parts
    • 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
    • A61M5/3213—Caps placed axially onto the needle, e.g. equipped with finger protection guards
    • 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
    • A61M5/42—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 desensitising skin, for protruding skin to facilitate piercing, or for locating point where body is to be pierced
    • A61M5/422—Desensitising skin
    • 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
    • A61M5/5013—Means for blocking the piston or the fluid passageway to prevent illegal refilling of a syringe
    • A61M5/502—Means for blocking the piston or the fluid passageway to prevent illegal refilling of a syringe for blocking the piston

Abstract

Self-disabling or self-locking single-use syringe of the passive type, i.e., one that is self-locked after first use of the syringe, in such a way that any attempted reuse is prevented, and is characterised in that it comprises at least two rings provided on the internal face of the barrel and having the general shape of a circular crown with a variable internal radius, and in that each of the longitudinal fins of the piston has a height which is different from that of at least one of the other fins, in such a way that the plunger can be inserted tightly through the space defined by the variable internal radius of the barrel rings. In this way resistance to the passage of the piston is minimised, thereby reducing the risk of causing bruises, and with a manufacturing cost substantially similar to that of conventional syringes.

Claims (16)

1. Single-use syringe comprising:

a barrel (10) which has an inner surface which defines a chamber for retaining a fluid;

a plunger (1) which comprises an elongated body, said elongated body comprising a plurality of longitudinal ribs (2), and a piston (3) which is connected to the end of the plunger close to the needle, the outer surface of the piston forming a fluid-tight connection with the inner surface of the barrel, characterised in that:

the barrel comprises at least two rings situated on the inner side of the barrel, at least one being situated on the distal part (8) and at least one being situated on the proximal part (9) of the barrel relative to the needle, said rings having the general shape of a circular rim with an outer radius coinciding with the radius of the inner side of the barrel and a variable inner radius, and in that each one of the longitudinal ribs (2) of the plunger has a height which is constant along its entire length, but different from that of at least one of the other ribs, said height being suitable on each rib for allowing insertion of the plunger (1) through the space defined by the variable inner radius of the said rings (8, 9) of the barrel in a close-fitting manner.
2. Syringe according to Claim 1, in which the said rings (8,9) of the barrel are incomplete crescent-shaped rings.
3. Syringe according to either one of Claims 1 and 2, in which the said rings (8,9) of the barrel are not continuous, but are formed by more than one section with a discontinuous shape.
4. Syringe according to any one of the preceding Claims 1 to 3, in which the said rings (8, 9) of the barrel have a generally triangular cross-section in the form of a right-angled triangle, one of the catheti being situated adjacent to the inner wall of the barrel, the second cathetus being situated perpendicularly with respect to said inner wall, and the hypotenuse between both catheti forming a surface inclined in the direction of forward movement of the plunger.
5. Syringe according to Claim 4, in which the hypotenuse has a curved shape.
6. Syringe according to any one of the preceding Claims 1 to 5, in which the ribs are four in number and in which one of the ribs has a height smaller than that of the other ribs and makes close-fitting contact with the rings of the barrel at a point where said rings have a minimum inner radius, another of the ribs has a height greater than that of the other ribs and makes close-fitting contact with the rings of the barrel on the side where they have an inner radius which has a maximum value or coincides with the inner radius of the barrel, and the two intermediate ribs have a suitable intermediate height such that each of them makes close-fitting contact with the rings of the barrel.
7. Syringe according to any one of the preceding Claims 1 to 6, in which the top ring (8) is situated close to the distal end of the barrel relative to the needle.
8. Syringe according to any one of the preceding Claims 1 to 7, in which the bottom ring (9) is situated within the first third of the length of the barrel measured from its end close to the needle.
9. Syringe according to any one of the preceding Claims 1 to 8, in which the said rings (8,9) of the barrel are semi-rigid so that the piston (3) can pass through them in the direction towards the end of the barrel close to the needle, but cannot pass through them in the return direction towards the end distant from the needle.
10. Syringe according to any one of the preceding Claims 1 to 9, in which the plunger (1) has at its end close to the needle a weakened connecting piece (4).
11. Syringe according to Claim 10, in which the weakened connecting piece (4) comprises at least one orifice (5) situated in the end of the plunger (1) close to the needle.
12. Syringe according to Claim 11, in which at least one orifice (5) has a polygonal shape.
13. Syringe according to any one of the preceding Claims 1 to 12, in which the piston (3) comprises additionally a tongue (7) for increasing the locking action of the piston (3) against the rings (8, 9) of the barrel when an attempt is made to extract the plunger once it has been locked.
14. Syringe according to any one of the preceding Claims 1 to 13, which also comprises a needle which forms a fluid connection with the chamber defined by the inner surface of the barrel (10).
15. Syringe according to Claim 14, which also comprises a cap for retaining the needle.
16. Syringe according to the preceding Claim 15, in which the cap has a substantially conical shape with one side prolonged in the form of a cylinder segment terminating in a claw-shaped sphere segment.
CA2672844A 2007-01-09 2007-01-09 Single-use syringe Expired - Fee Related CA2672844C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/ES2007/070001 WO2008084124A1 (en) 2007-01-09 2007-01-09 Single-use syringe

Publications (2)

Publication Number Publication Date
CA2672844A1 true CA2672844A1 (en) 2008-07-17
CA2672844C CA2672844C (en) 2012-12-04

Family

ID=39608393

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2672844A Expired - Fee Related CA2672844C (en) 2007-01-09 2007-01-09 Single-use syringe

Country Status (14)

Country Link
US (1) US8016787B2 (en)
EP (1) EP2103321B1 (en)
JP (1) JP5027250B2 (en)
CN (1) CN101636192B (en)
BR (1) BRPI0719480A2 (en)
CA (1) CA2672844C (en)
DK (1) DK2103321T3 (en)
EA (1) EA014969B1 (en)
ES (1) ES2394109T3 (en)
MX (1) MX2009007217A (en)
PL (1) PL2103321T3 (en)
PT (1) PT2103321E (en)
SI (1) SI2103321T1 (en)
WO (1) WO2008084124A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200459032Y1 (en) 2010-06-23 2012-03-21 강성남 Safe piston
BR112013012455A2 (en) * 2010-11-18 2019-01-08 Mª LOURDES GRAMAGE PINA single use syringe
AP3637A (en) * 2010-11-18 2016-03-12 Piña Ma Gramage Single-use syringe
US20120191041A1 (en) * 2011-01-21 2012-07-26 Pullara Salvatore V Safety syringe

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IN169618B (en) * 1987-06-25 1991-11-23 Agven Medical Corp Ltd
WO1989000057A1 (en) 1987-07-02 1989-01-12 Robert John Charles Foster Single fill and use syringe
AU3366089A (en) * 1988-03-28 1989-10-16 Sang Don Lee Locking needle assembly in a hypodermic syringe
US4826483A (en) * 1988-05-05 1989-05-02 Paul F. Boyd Non-reusable syringe
ES2014802A6 (en) * 1989-07-17 1990-07-16 Sempere Escudero Philippe A non-reusable syringe.
FR2689765B1 (en) * 1992-04-10 1999-07-09 Constantin Vounatsos UNI INJECTION SYRINGE.
GB2350317B (en) * 1996-07-15 2001-01-10 Star Syringe Ltd Apparatus for making syringes
US7125397B2 (en) * 1997-08-20 2006-10-24 B. Braun Melsungen Ag Protective device for an injection needle
US20040064105A1 (en) 2002-09-27 2004-04-01 Capes David Francis Single-use syringe
US6287282B1 (en) * 1999-11-16 2001-09-11 Creative Plastic Technology, Llc Syringe safety sleeve and adaptor
GB2381199A (en) 2000-07-25 2003-04-30 Hsien-Ming Hsieh A self-destructing syringe
US6656165B2 (en) * 2001-10-26 2003-12-02 Hsin Cheng Chen Disposable safety syringe
ES1051002Y (en) * 2002-01-21 2002-10-16 Serrano Luis Canadas PERFECTED SYRINGE.
US20040186428A1 (en) * 2002-09-11 2004-09-23 Utpal Ray Auto-destructible syringe
US6972006B2 (en) * 2002-09-18 2005-12-06 G6 Science Corp. Syringe device with resistive ridges and methods of use
US20040176722A1 (en) 2003-03-05 2004-09-09 Capes David Francis Single-use syringe
ES1055675Y (en) * 2003-05-29 2004-04-16 Gloves Shamrock Line S L PERFECTED SYRINGE.
US20050070849A1 (en) * 2003-09-30 2005-03-31 Chang-Ming Yang Safety winged set
US20060084913A1 (en) * 2004-07-06 2006-04-20 Jui-Chung Lo Safety syringe with needle orienting mechanism
DE202004017971U1 (en) * 2004-11-19 2005-02-03 BATTERT, Günter Protective unit for needles and syringes comprises a cover slidable on a syringe body, and includes a movable element which in its fully forward position closes the needle exit
US20080249462A1 (en) * 2005-10-21 2008-10-09 Nilufer Smith Innovations Limited Disposable Dispensers for Personal Use

Also Published As

Publication number Publication date
US8016787B2 (en) 2011-09-13
EP2103321A4 (en) 2011-06-22
WO2008084124A1 (en) 2008-07-17
MX2009007217A (en) 2009-07-10
EP2103321A1 (en) 2009-09-23
CA2672844C (en) 2012-12-04
PT2103321E (en) 2012-11-12
EA014969B1 (en) 2011-04-29
BRPI0719480A2 (en) 2011-03-29
US20100049124A1 (en) 2010-02-25
JP5027250B2 (en) 2012-09-19
JP2010515506A (en) 2010-05-13
EP2103321B1 (en) 2012-08-01
CN101636192B (en) 2012-08-29
PL2103321T3 (en) 2013-04-30
ES2394109T3 (en) 2013-01-21
DK2103321T3 (en) 2012-11-19
CN101636192A (en) 2010-01-27
SI2103321T1 (en) 2013-01-31
EA200970673A1 (en) 2009-12-30

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed

Effective date: 20180109