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Publication numberUS2667165 A
Publication typeGrant
Publication dateJan 26, 1954
Filing dateMar 19, 1952
Priority dateMar 19, 1952
Publication numberUS 2667165 A, US 2667165A, US-A-2667165, US2667165 A, US2667165A
InventorsSmith Arthur E
Original AssigneeSmith Arthur E
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Disposable syringe
US 2667165 A
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Description  (OCR text may contain errors)

Jan. 26, 1954 A. E. SMITH DISPOSABLE SYRINGE Filed March 19, 1952 INVENTOR.

Patented Jan. 26, 1954 UNITED STATES PATENT OFFICE 4 Claims.

This invention relates to a disposable syringe.

The general object of the invention is to provide an improved, highly effective, disposable syringe,

A more specific object of the invention is to provide a novel syringe wherein a front member is employed as a needle support and wherein a recess in a flexible rear member secured to the front member is closed by forward movement of the rear member.

Another object of the invention is to provide a novel disposable syringe which includes a front member and a flexible, accordion pleated, rear member which is secured to the front member to form a chamber.

Another object of the invention is to provide a syringe including a front member and a flexible, integral, accordion pleated, rear member.

Other objects and advantages of the invention will be apparent from the following description taken in connection with the accompanying drawings, wherein:

Fig. 1 is an isometric view of the completed syringe;

Fig. 2 is a central, sectional view through the axis of the syringe, showing my invention;

Fig. 3 is a fragmentary view similar to Fig. 2, showing the parts in the position they assume when the syringe has been discharged, and

Fig. 4 is an enlarged, central, sectional view, showing a modified syringe.

Referring to the drawing by reference characters, I show a syringe embodying the features of my invention which is indicated generally at Iii. As shown the syringe includes a front member I l and a rear member 12.

As shown, the front member includes a forwardly extending tip l3 which is tapered. The front member has spaced ribs I 4 which afford strength while maintaining a relatively thin wall so that curing can be promptly done.

A needle i5 is arranged in the tip and extends into the body at E6. The needle is tightly embedded in the front member I3 to prevent movement of the needle, and the forward end of the needle at If! is sharpened.

A closure cap member l9 surrounds the needle. The closure cap is hollow as at 26 and at its rear end 2! engages in a reduced aperture 22 in the tip 6-3. Thus the needle I8 is maintained in a sterile condition.

The front member has a planar rear face 30 and has an annular rim 3! integral therewith. The rear member l2 includes a body 32 which may have stiffening corrugations 33. Integral with the body I show a pair of reversed, integral, frusto-conical portions 34 and 35 which form an accordion pleat.

The portion 35 includes a flange 36 which engages the face 30 of the front member. The flange 36 is secured to the front member by folding over the annular rim portion 3| as at 31 onto the flange 36 and securing the parts together as by adhesive or heat and pressure as at 38. At their outer peripheries the parts 34 and 35 are shown as provided with V-grooves 39 and 40, which latter form hinge lines about which the parts may flex. A similar groove 4| may be provided at the intersections of the parts 34 and 35.

The syringe may be made ofrubber, artificial rubber, polyethylene, Lucite or other plastics which have suitable properties of strength, fiexi bility and resilience and which may be transparent.

The body of the rear member is shown as having a tubular extension 42 with a plug 43 therein. The plug 43 is provided with a hole 44. The hole is closed by a diaphragm 45. A filling needle may be inserted through the diaphragm 45 and may be withdrawn after the syringe is filled.

In Fig. 4 I show a modification of my invention wherein parts similar to those previously described are indicated by similar primed reference numerals.

In the modification the body 32' of the rear member is provided with an integral cupped portion forming a recess 50 in which I insert an operating member 5i. A groove 52 in the member 5| may receive a bead 53 on the body 32' to hold the member 5| in place.

In use, after the syringe has been filled, the operator will remove the cap I 9, to place the syringe in condition for use. The injection will then be made and slight forward pressure will be applied upon the extension 42 so that some of the contents of the syringe will be discharged. The extension 42 will then be pulled rearwardly to produce an aspirating effect and if the needle has been inserted in a blood vessel, blood will appear in the recess within the syringe and will be visible through the transparent wall of the syringe (if the syringe is made of transparent material), thus enabling the operator to remove the needle and make a fresh injection.

If the needle has been properly located, the extension 42 will be pushed inwardly until the parts assume the position shown in Fig. 3, whereupon full discharge will have been made.

From the foregoing description it will be apparent that I have invented a novel syringe, which is simple in construction, may be readily made and filled, and which is highly efficient in use.

Having thus described my invention, I claim:

1. A syringe including a front member and a rear member, said front member including a body having a tapered forward end, a needle in said body and projecting forwardly therefrom, said front member having a planar rear face and having an amiular rim about the planar face, said rear member including a body, said body having an integral accordion folded extension, said extension including a first, inwardly directed, frusto-conical portion united to the rear member body and a second, outwardly directed, frusto-conical portion integral with the inwardly directed portion, said outwardly directed portion having an integral annular rim engaging the front member rim, said front member rim including an extension bent over and secured to the rear member rim to make a seal.

2. A syringe including a front member and a rear member, said front member including a body having a tapered forward end, a needle in said body and projecting forwardly therefrom, said front member having a planar rear face and having an annular rim about the planar face, said rear member including a body, said body having an integral accordion folded extension, said extension including a first, inwardly directed, frusto-conical portion united to the rear member body and a second, outwardly directed, frusto-conical portion integral with the inward ly directed portion, said outwardly directed portion having an integral annular rim engaging the front member rim, said front member rim including an extension bent over and secured to the rear member rim to make a seal, said rear member body having a rearwardly directed extension thereon, a hole in said extension and a pierceable diaphragm closing said hole.

3. A syringe including an integral front member and a rear member, said front member in eluding a body having a tapered forward end, said front member forward end having exterior spaced stiffening ribs thereon a needle in said body and projecting forwardly therefrom, said rear member including an integral accordion folded extension, said extension including a first, inwardly directed, frusto-conical portion and a second, outwardly directed, frusto-conical portion integra1 with the inwardly directed portion, said outwardly directed portion being integral with the front member, and an operating member secured to the rear end of said rear member.

4. A syringe including a front member and a rear member, said front member including a body having a tapered forward end, a needle in said body and projecting forwardly therefrom, said front member having a planar rear face, said rear member including a body, said body having an integral accordion folded extension, said extension including a first, inwardly directed, frusto-conical portion united to the rear member body and a second, outwardly directed, frusto-conical poition integral with the inwardly directed portion, said outwardly directed portion having an integral annular rim engaging the front member planar rear face, means holding the front and rear members together, said rear member body having a rearwardly directed extension thereon, a hole in said extension and a pierceable diaphragm closing said hole.

ARTHUR E. SMITH.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 214,552 Connable Apr. 22, 1879 445,813 Liesenring Feb. 3, 1891 1,288,174 Pittenger Dec. 1'7, 1918 1,961,489 Hein June 5, 1934 2,512,568 Safiir June 20, 1950

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US214552 *Mar 8, 1879Apr 22, 1879 Improvement in syringes
US445813 *Dec 9, 1890Feb 3, 1891 Syringe
US1288174 *Jun 28, 1918Dec 17, 1918H K Mulford CompanyPackage and hypodermic syringe.
US1961489 *Aug 18, 1930Jun 5, 1934George N HeinResilient reflex syringe
US2512568 *Aug 13, 1946Jun 20, 1950Saffir Jacob AHypodermic injection device
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2717598 *Nov 21, 1952Sep 13, 1955Louis R KrasnoHypodermic syringe
US2911972 *Sep 14, 1954Nov 10, 1959Elinger Adolfo ScholcoffHypodermic syringe-ampulla
US2950717 *Mar 19, 1956Aug 30, 1960R K Price Associates IncAmpules
US3017883 *Aug 12, 1957Jan 23, 1962Becton Dickinson CoVenoclysis assembly
US3043304 *Mar 30, 1959Jul 10, 1962Brunswick CorpHypodermic needle mount
US3094987 *Sep 18, 1961Jun 25, 1963Hannah DunmireHypodermic ampoules
US3991757 *Jun 16, 1975Nov 16, 1976Koninklijke Emballage Industrie Van Leer B.V.Hypodermic syringe
US5201751 *Sep 20, 1990Apr 13, 1993Andre CohenAcupuncture needle for mixed use
US5370626 *Jul 26, 1993Dec 6, 1994Farris; BarryPlungerless syringe
US5538506 *Nov 3, 1993Jul 23, 1996Farris; BarryPrefilled fluid syringe
US5957895 *Feb 20, 1998Sep 28, 1999Becton Dickinson And CompanyLow-profile automatic injection device with self-emptying reservoir
US6296150Feb 25, 1999Oct 2, 2001Barry FarrisMedicinal dosing apparatus and method
US6547099Aug 9, 2001Apr 15, 2003Barry FarrisMedicinal dosing apparatus and method
US6979316May 23, 2002Dec 27, 2005Seedlings Life Science Ventures LlcApparatus and method for rapid auto-injection of medication
US7192549Jul 10, 2003Mar 20, 2007Bernd HansenMoulding method, in particular a blowing or vacuum moulding method for production of a dispensing container filled with a medium for dispensing
US7309463Mar 19, 2007Dec 18, 2007Bernd HansenMoulding method, in particular a blowing and/or vacuum moulding method for production of a dispensing container filled with a medium for dispensing
US7658724Mar 24, 2005Feb 9, 2010Seedings Life Science Ventures LLCApparatus and method for rapid auto-injection of medication
US7883660 *Feb 3, 2006Feb 8, 2011Toyo Seikan Kaisha, Ltd.Sterile package, process for producing the same, and production apparatus
CN100453405CJul 10, 2003Jan 21, 2009贝尔恩德汉森Moulding method, in particular a blowing or vacuum moulding method for production of a dispensing container filled with a medium for dispensing
DE1030524B *Mar 30, 1955May 22, 1958Bernard BouetInjektionsvorrichtung
DE1063340B *Nov 3, 1954Aug 13, 1959Adolfo Scholcoff ElingerAmpulle fuer Injektionsspritzen
WO1987001944A1 *Oct 1, 1986Apr 9, 1987Axipac LtdDisposable syringe
WO2004033299A1 *Jul 10, 2003Apr 22, 2004Bernd HansenMoulding method, in particular a blowing or vacuum moulding method for production of a dispensing container filled with a medium for dispensing
Classifications
U.S. Classification604/204, 604/216
International ClassificationA61M5/28
Cooperative ClassificationA61M5/282
European ClassificationA61M5/28E1