Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.


  1. Advanced Patent Search
Publication numberUS3270743 A
Publication typeGrant
Publication dateSep 6, 1966
Filing dateMay 29, 1963
Priority dateMay 29, 1963
Publication numberUS 3270743 A, US 3270743A, US-A-3270743, US3270743 A, US3270743A
InventorsPierre Gingras
Original AssigneeLeeming Miles Pharmaccuticals
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Hypodermic injection syringe
US 3270743 A
Abstract  available in
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

Sept. 6, 1966 P. GINGRAS 3,270,743

HYPODERMIC INJECTION SYRINGE Filed May 29, 1963 ATTORNEYS United States Patent 3,270,743 HYPODERMIC INJECTION SYRINGE Pierre Gingras, Pierrefond, Quebec, Canada assignor to Leeming-Miles Pharmaceuticals Inc., Montreal, Quebec,

Canada Filed May 29, 1963, Ser. No. 284,139 3 Claims. (Cl. 128-215) The present invention relates to a hypodermic injection syringe and more particularly to a protective assembly for the need-1e of such syringes.

The invention is particularly adaptable to the type of injection syringes now found on the market and which are of such a low manufacturing cost that they may be discarded after use. In such syringes, both the cylinder and the piston thereof are made of plastic material which can easily be molded at very low cost. This type of injection syringe is extremely useful and possesses many advantages, one of which is certainly its low cost which makes it possible to discard it after use thus avoiding the necessity of cleaning and sterilizing. It is an object of this invention to still improve the usefulness of the known syringe of this type.

With the hypodermic syringe presently on the market, the physician still has to carry with him, when visiting his patients, a bottle of an antiseptic liquid such as ether, alcohol or the like as well as a box of absorbent material such as cotton. Furthermore, every time an injection has to be made, he has to go through several motions in order to sterilize the skin through which the injection is to be made. All these operations are time consuming and this is rather important particularly for the physician whose schedule is usually very heavy. Also, it may happen at times that the physician forget or run out of either the antiseptic liquid or the absorbent cotton or both and that none may be available on site.

It is therefore a main object of the invention to provide a hypodermic syringe which is complete by itself, that is, which includes the necessary antiseptic liquid and a wad of absorbent material.

A further object of the invention resides in the provision of a protective assembly for the needle of a hypodermic injection syringe which also includes a reserve of absorbent material and antiseptic liquid.

Still another object of the invention consists is providing a disposable syringe which is timesaving for the physician who has to use it and which can be manufactured at a relatively low cost on account of its simplicity and of the materials from which it can be made.

The above noted objects may be attained with a protective assembly for the needle of a hypodermic injection syringe, the latter being provided with a piston cylinder adapted to contain the substance to be injected and with a needle which projects from one end thereof, the assembly comprising an outer envelope having an open end adapted to snugly fit over the end of the piston cylinder from which the needle projects; a protective substantially conical inner cover within said envelope housing the needle and having the wide end thereof secured to said open end of said envelope; a wad of absorbent material at the other end of the envelope and removable cap means closing said other end of the envelope. To facilitate removal of the wad, means are also provided for forcing it out of the envelope.

Further objects and other advantages of the invention will become apparent as the following description proceeds of two illustrative embodiments of the invention, having regard to the annexed drawings wherein:

FIG. 1 illustrates, in a perspective view, a syringe provided with a protective assembly made according to the invention;

3,270,743 Patented Sept. 6, 1966 FIG. 2 shows the same assembly, in perspective view, the part being shown in exploded relationship;

FIG. 3 is a view of one end of the assembly as the wad is being removed;

FIG. 4 is a longitudinal cr'oss'section of the assembly of the invention as shown mounted on a syringe of a known type;

FIG. 5 is a perspective exploded view of a second embodiment of the invention.

As illustrated in FIG. 1, the protective assembly 1 of the invention is for mounting over the needle end of a syringe 3 of a known type. For appearance purposes and also to avoid the assembly from coming off the syringe 3, the former should be formed as a sort of extension of the piston cylinder of syringe 3 in a manner explained hereinafter.

The assembly of the invention is for use with a standard hypodermic injection syringe formed of a cylinder 5 adapted to receive the substance to be injected and within which slidably moves a piston 7 provided with the usual operating piston rod 9 having the usual finger disc or plate 11 which is used in conjunction with a pair of finger grip flanges 13 laterally projecting from cylinder 5.

The cylinder 5 is preferably made of a thermoplastic material such as polyethylene whereas, for greater rigidity, piston rod 9 can be made of a thermosetting resin such as polystyrene and perhaps have a cruciform shape in cross-section.

In the embodiment shown in FIG. 4, a needle 17 is fixedly mounted at the end of the tapered projection 18 or, alternatively, can be removably mounted over said projection which is dimensioned to accept standard needles with a metal or plastic collar. At the same end of cylinder 5 a recess 19 is provided, for a purpose to be explained later on.

The protective assembly 1 of the invention is formed of a generally cylindrical envelope 15, open at both ends, with one'end adapted to snugly fit over the recessed end 19 of piston cylinder 5. This is done in such a way that the outer surface of envelope 15 becomes flush with the outer surface of piston cylinder 5 when assembly 1 is mounted on the syringe 3.

Within this envelope 15 is a generally conical cover 21 adapted to be mounted over needle 17 and secured, at the wide end thereof, to the outer envelope 15 as at 23.

Preferably, both cylindrical envelope 15 and conical cover 21 are made of a thermoplastic material such as polyethylene whereby cover 21 may be secured over envelope 15 by heat seal at 23.

Envelope 15 is substantially longer than inner cover 21 whereby to leave, at the outer free end, a space for the reception of a wad 25 of absorbent material such as cotton impregnated with an antiseptic liquid like ether or alcohol.

The end of cylindrical envelope 15 away from end 23 is closed by any suitable means, preferably a fiat disc 27 of thermoplastic material, preferably polyethylene, heat sealed to the end periphery of cylindrical envelope 15. Finally, disc 27 of the said removable cap means is provided with at lea-st one finger grip 29 which projects laterally away from cylindrical envelope 15 and which serves for peeling off the disc from the envelope.

Preferably also, the assembly of the invention is provided with cord means for pulling wad 25 out of envelope 15. As shown more particularly in FIG. 2, the cord means is a cord 31 which has one end secured within wad 23 (having the form of a cylindrical plug), projects out at the inner end of the plug, folds and is drawn towards the outer end and is finally folded thereover whereby to become accessible when cap means 27, 29 is removed. FIG. 4 particularly illustrates cord 31 as being folded over the outer end of the plug. FIG. 3 illustrates how plug 25 may be removed from cylinder or envelope 15.

In the particular embodiment illustrated in FIG. 5, a cup-shaped plastic container 33 provided at the open end thereof, with a lateral flange 35, having a radial extension 37, heat-sealed to the outer surface of flat head or disc 11 of the syringe. A wad 39 of absorbent cotton is inserted within the cup-shaped container 33 prior to heat-sealing on head 11. As in the previous case, wad 39 is filled with an antiseptic liquid. It will also be noted that radial extension 37 may be used as a finger grip to peel off container 33 from the said head 11.

The embodiments just described are illustrative only of the invention and it should be understood that various modifications may be made thereto without departing from the spirit of the invention, the scope of which is set forth in the appended claims.

I claim:

1. A protective assembly for the needle of a hypodermic syringe having a piston cylinder, made of plastic material, adapted to contain the substance to be injected and from one end of which said needle projects, said assembly comprising:

(a) a plastic cylindrical envelope having an open end adapted to snugly fit over the end of said cylinder from which said needle projects;

(b) a protective substantially conical plastic inner cover within said envelope housing said needle and having the wide end thereof integrally joined to said open end of said envelope;

(c) a Wad of absorbent material filled with antiseptic liquid disposed at the other end of said envelope;

(d) cord means for pulling said wad out of said envelope, and

(e) removable cap means closing said other end of said envelope comprising a circular fiat disc of plastic material fitting over and heat-sealed to said other end of said envelope; said disc having a finger grip member radially projecting therefrom whereby it may be peeled off said envelope by pulling on said member.

2. An assembly as claimed in claim 1, wherein said 4 wad is a cylindrical plug and said cord means is a cord having one end secured within said plug, projecting out at the inner end thereof, folded and drawn toward the outer end and again folded thereover whereby to be of ready access when said cap means is removed.

3. A hypodermic syringe comprising:

(a) a plastic piston cylinder adapted to contain the substance to be injected and formed with a peripheral axial recess of predetermined depth about one end thereof;

(b) a needle mounted on said one end;

(c) a plastic cylindrical envelope having an open end; the wall thickness of said envelope at said open end being substantially'equal to said predetermined depth; said open end being of such a diameter to snugly fit in said recess whereby the outer surfaces of said envelope and said cylinder are substantially flush;

(d) a protective substantially conical plastic inner cover Within said envelope housing said needle and having the wide end thereof integrally joined to said open end of said envelope;

(e) a wad of absorbent material filled with antiseptic liquid disposed at the other end of said envelope;

(f) cord means for pulling said wad out of said envelope, and

(g) removable cap means closing said other end of said envelope.

References Cited by the Examiner UNITED STATES PATENTS FOREIGN PATENTS 8/1954 Canada. 1/1955 Great Britain.

RICHARD A. GAUDET, Primary Examiner. 4


Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US2134930 *Sep 3, 1935Nov 1, 1938Holly Pax IncTampon and method of making it
US2841143 *Mar 27, 1956Jul 1, 1958Penicillin Ges Dauelsberg & CoInjection device for liquids and ampoule therefor
US2851036 *Jun 1, 1955Sep 9, 1958Lee Barry Lab IncCombination pre-sterilized syringe and container
US2855933 *Apr 4, 1952Oct 14, 1958American Hospital Supply CorpFluid receptacle
US2966986 *Jan 14, 1959Jan 3, 1961Extruded Plastics IncPackaged sterile hypodermic needles
CA505296A *Aug 24, 1954American Home ProdCartridge-syringe unit
GB721375A * Title not available
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3677245 *Apr 6, 1970Jul 18, 1972Becton Dickinson CoSelf-contained disposable syringe
US4243035 *Jun 18, 1979Jan 6, 1981Barrett Howard GSyringe with integral swab
US4446967 *May 7, 1982May 8, 1984Halkyard Douglas RGermicide sleeve for dental and medical instruments
US4463880 *Apr 30, 1982Aug 7, 1984The Regents Of The University Of CaliforniaMedicine drop dispenser with anti-bacterial filter
US4475903 *Oct 19, 1983Oct 9, 1984Duphar International Research B.V.Disposable hypodermic syringe
US4799926 *Oct 13, 1987Jan 24, 1989Habley Medical Technology CorporationSyringe, having self-contained, sterile, medication applying swab
US4941873 *Feb 5, 1986Jul 17, 1990Ultradent Products, Inc.Controlled diffusion medicament applicator
US4997371 *Jun 22, 1988Mar 5, 1991Honda Giken Kogyo Kabushiki KaishaDental agent applicator
US5080661 *Apr 18, 1991Jan 14, 1992Hollister IncorporatedFixation pin entry site dressing and method
US5085647 *Mar 7, 1991Feb 4, 1992Sherwood Medical CompanyRigid needle cover with needle sealing plug and method of manufacture thereof
US5098404 *Apr 23, 1990Mar 24, 1992Evan CollinsHypodermic syringe receptacle
US5161681 *May 3, 1991Nov 10, 1992Kemp David RSafety container for hypodermic syringes
US5172808 *May 17, 1989Dec 22, 1992John BrunoDevice for safely transporting one or more hypodermic needles or the like from point of use to point of ultimate disposal
US5190521 *Aug 22, 1990Mar 2, 1993Tecnol Medical Products, Inc.Apparatus and method for raising a skin wheal and anesthetizing skin
US5246371 *Sep 1, 1992Sep 21, 1993Ultradent Products, Inc.Method and apparatus for delivery of highly filled, thixotropic sealant to teeth
US5269684 *Aug 31, 1992Dec 14, 1993Ultradent Products, Inc.Adjustable brush delivery tip with secondary flow path
US5308322 *Apr 19, 1993May 3, 1994Tennican Patrick OCentral venous catheter access system
US5989229 *May 28, 1997Nov 23, 1999Becton, Dickinson And CompanyNeedle cover assembly having self-contained drug applicator
US5993426 *Apr 16, 1993Nov 30, 1999Sims Portex Inc.Fluid absorbable needle sheath
US8167847May 1, 2012Excelsior Medical CorporationAntiseptic cap and antiseptic cap equipped plunger and syringe barrel assembly
US8231602Jul 31, 2012Excelsior Medical CorporationMethod of cleaning and covering an access site
US8535257 *Jun 24, 2011Sep 17, 2013Michael S. ZeltenSyringe and swab system
US8845593May 16, 2012Sep 30, 2014Excelsior Medical CorporationAntiseptic cap with antiseptic
US8968268Apr 26, 2012Mar 3, 2015Excelsior Medical CorporationAntiseptic cap
US9259535Jul 12, 2012Feb 16, 2016Excelsior Medical CorporationAntiseptic cap equipped syringe
US9333301 *Oct 13, 2014May 10, 2016Becton, Dickinson And CompanyFlush syringe having compressible plunger
US20070167917 *Jan 19, 2006Jul 19, 2007Lee David HDisposable syringe with a swab pack
US20080086091 *Jun 22, 2007Apr 10, 2008William AndersonAntiseptic cap and antiseptic cap equipped plunger and syringe barrel assembly
US20090099529 *Jun 19, 2008Apr 16, 2009William AndersonAntiseptic cap with thread cover
US20120302968 *Nov 29, 2012Hyprotek, Inc.Medical Caps and Methods of Use
US20150032064 *Oct 13, 2014Jan 29, 2015Becton, Dickinson And CompanyFlush Syringe Having Compressible Plunger
WO1991017783A1 *May 13, 1991Nov 28, 1991Gerardo CastaldoProtective hypodermic needle
WO1998053868A1 *May 27, 1998Dec 3, 1998Becton Dickinson And CompanyNeedle cover with drug applicator
U.S. Classification604/192, 604/199, D24/114, 206/210
International ClassificationA61M5/31, A61M5/00
Cooperative ClassificationA61M5/001, A61M5/3202
European ClassificationA61M5/32B