US1817003A - Hypodermic syringe - Google Patents

Description

ug, 4, 1931., l G N, HEIN 1,817,003

HYPODERMIC SYRINGE Filed April 26, 1924 fnvej z 011 Patented Aug. 4, 1931 UNITED STATES PATENT OFFICE GEORGE N. HEIN, F SAN FRANCISCO, CALIFORNIA HYPODERMIC sYnINGE nppneauon med April 2e, 1924. serial No. 709,152.

to be applied is deposited. To eject the fluid a piston is employed and the same is inserted into'l the barrel through its open end. In someI cases, first charges of material such as cartridges, medically termed ampules, are inserted in the barrel and the contents thereof is, on the movement of the piston discharged through the needle.

The present invention relates broadly to what may be termed a two-part syringe, one part constituting a tubular piston mounting the needle and the hand grip and the other constituting an ampule or cartridge serving as a barrel and having telescopic movement over the piston in the discharge of its contents.

In addition to the objects set forth in the immediately preceding paragraph, the invention has for another object to provide an improved form of ampule having a puncturable closure serving as an expelling piston head; another object is the'incorporationvin the piston of a means for puncturing the ampule the same to be maintained sealed until that time when it is desired to expel the contents therefrom; another object is to provide in connectionl with the piston,

when necessary, a barrel for receiving the material to be applied through the syringe by the material being directly deposited therein or received therein by the depositin of the sealed ampule.`

With the above mentioned and other objects in view, the invention consists in the novel construction and combination of parts hereinafter described, illustrated in the accompanying drawings, and set forth in the claims hereto appended, it being understood that various changes in the form, proportion, size and minor details of construction within the scopeof the claims may be resorted to without departing from the spirit or sacrificing any of the advantages of the invention.

Fig. 1 is a view in longitudinal section of yby the use of a hypodermic syringe.

one embodiment of my invention with the ampule serving as the applying barrel.

Fig. 2 is a view in longitudinal section of the needle base mounting the ampule puncturing needle and the hypodermic needle.

Fig. 3 is a longitudinal sectional view of a modified form of construction and Fig. 4 is a view in elevation of the construction illustrated in Fig. 3.

Figure 5 is a longitudinal sectional view of a holder showing an ampule placed therein anda portion of the piston structure.

Inthe drawings, the numeral 1 indicates the elongated shell of any suitable material preferably circular in cross section closed at one end as at 2 and open at its opposite end as at 3, the same forming an ampule for containing a charge of liquid 4 to be ap lied Xfter the fluid has been deposited in. the ampule the open end 3 thereof is closed by a member 5 of any suitable puncturable material such as cork or rubber. The member 5 is adapted for reciprocating movement within the ampule .with its peripheral edge lin tight frictional contact with the inner Wall of the ampuleA and. thereby serving as an expelling piston or washer. The center of the ampule is relatively thin as at 6 for the hereinafter described purpose.

The numeral 7 indicates a piston having a tubular open ended bore 8 extending longitudinally thereof, one end of said bore having inserted thereinto a demountable needle base 9 havin threaded' engagement therewith. A tubu ar needle 10 is provided preferably extending longitudinally of the piston 8 to a point to project beyond the end thereof as in Fig. 1. A detachable needle is thereby provided so it may be readily sterilized or may be changed for diii'erent patients or at will. The puncturing point of the needle 10 extends through an opening in the piston head 1l detachably secured to the end of the piston 7 and closing the boreY 8 thereof. As illustrated, the puncturing point of the needle 10 projects a suiiicient distance beyondthe end wall of the piston head to pass through the Wall 6 of the lclosure 5 on pressure being applied to the ampule 2 I end and by an operator endeavoring to force the ampule over the piston as hereinafter described. Extending outwardly from the base 9 and communicating with the needle.

10 is a conventional hypodermic needle 12.

To enable the operator to grasp the piston, a suitable member 13 is detachablyI threaded as at 14 or otherwise secured to the end of the piston 7 and the same carries linger grip portions 15.

`When in use the device described operates in the following manner.

The operator takes the sealed ampule and fits the same over the piston head 11, en-

gages the fingers under the members 15 and applies the pressure of the thumb to the end 2 of the ampule. This application of pressure causes the end of the needle 10 to puncture the closure 5 and provide an outlet for the contents of the ampule through needle 10 and through needle 12. The continued application of pressure to the end of ampule 2 forces the closure 5 longitudinally within the'same and the closure acts as a piston discharging the liquid from the ampule through the needles 10 and 12.

surface of the ampule and protects the Ipisf ton from injury. In this construction illustrate a barrel 23 having a chamber 24 open at one end into which may be inserted the ampule or into which may be deposited the Huid to be applied, in either case the application of pressure on the end of the arrel forces the material longitudinally through needles 10 and 12 and discharges it from the end of needle 12. Y.

It will be observed that the closure for the single open end of the ampule serves as a piston and is punctured providing an outet for the fluld.

.I claim:

1. A hypodermic syringe including a tubular piston, a hypodermic needle detachably associated with one end thereof, a piston head associated with the other end, a tubular puncturin element projecting beyond the plston hea and communicating with the tubular piston, finger gripping members carried by the piston, a fluid container closed at one end and `provided with an open mouth and adapted for positioning with the Piston head. received in its open or telescopic movement over the and said closure.

piston, wherebythe contents of the container, discharges through the tubular piston, and a sealing member for the mouth vof the container and adapted for beiig punctured by the puncturing element on the reception of the piston in the end ofthe container and for movement into the container in advanceof the piston.

2. A hypodermic syringe including a tubular piston, a shell surrounding the same connectedy ltherewith affording an annular chamber surrounding the piston, a hypodermic needle associated with one end of the piston, a piston head with the other end of the piston, a tubular puncturing member projecting beyond the pistonhead, a barrel provided at one end with a chamber open at one end into which said piston is adapted for reception with the chamber Wall enterino the chamber between the pistonV and shel and finger gripping members associated with the shell.

3. A hypodermic syringe comprising a needle base, an elongated tubular piston removably secured to one end portion of said needle base, a finger grip memberhaving an annular central portion secured at one end to the piston, said piston slidably receiving and anampule thereon and a portion of the piston being of substantially the same diameter as 'the inner diameter of the ampule, and a needle in said piston for conveying fluid from the ampule to a passage formed in the needle base, for delivery to a hypodermic needle secured to said base.

4. A hypodermic syringe comprising a needle base, a piston of elongated uniform size for slidably receiving and guiding an ampule thereon throughout its length, and a tubular shell having handle extensions on l one end, the opposite end of saidl shell and oneend of the-needle base and piston respectively being formed for interlocking cooperation in syringe forming relation, said piston having a needle passage for the discharge of Huid from the ampule to the needle base and a hypodermic needle carried thereby.

5. A hypodermic syringe including a tubular piston, a hypodermic needle detachably associated with the end' thereof, a tubular: puncturin needle communicating with the hypodermic needle and for reception within the tubular piston with its end projecting beyond the end of the piston, finger gripping members associa-ted with the piston, a cylindrical member provided with asingle opening at one" end for the reception of the end of the piston and for telescopic movement thereover, and a puncturable closure for the open end of the member and through which said puncturing needle projects on the contact of. the piston with 6. A hypodermic syringe comprising a needle base, a tubular piston, a tubular shell, said piston and shell having concentric spaced relationship and being connected at their lower ends, and said needle base removably associated with said lower end, handles on said shell, a piston head mounted in one end of the piston and of a diameter to snugly fit the wall of the cylindrical fluid containing member 'to be positioned thereover, a tubular needle mounted in said piston head and needle base, said needle base being adapted vto receive a hypodermic needle, and a cylindrical fluid containing member open at one end, adapted to be slidably received on said tubular piston and head for discharging the contents through said tubular needle. A

7. A hypodermic syringe comprising a needle base, a piston structure removably assembled on said lbase and including a head for frictional engagement with the wall of a container to be moved thereover, a sleeve member removably mounted on the lower portion of the piston structure and extending ,in spaced concentric relation around said piston structure to form' a guideway in` cooperation with said piston structure, said needle base being adapted to mount a hypodermic needle, handles on said sleeve member, and a cylindrical container formed to slidably fit said piston structure and said guideway for discharging liquid contents through av passage in the piston structure and the hypodermic needle in the movement thereof onto the piston.

8. A hypodermic syringe comprising a needle base, an elongated tubular piston removably secured to one end portion of said needle base, a iinger gripv member having an annular central portion 4secured at one end to the piston, a portion of said piston being of the same diameter as the interior of an ampule for slidably receiving and guiding an ampule thereon, and a needle in said piston for conveying fluid from the ampule for delivery to a hypodermic needle secured to said base.

9. A hypodermic syringe including a needle base, a tubular piston, a finger grip member, said needle base, tubular piston and linger grip member being assembled in syringe forming relation, a hypodermic needle detachably associated with said needle base, a puncturing needle associated with and projecting beyond the end of the piston, a cylindrical member provided'with a single opening at one end for the reception of the piston and for telescopic movement thereover, an imperforate closure for the open end of said cylindrical member and adapted to be punctured by said puncturing needle, whereby the contents of said cylindrical member are conducted to said hypodermic needle when said cylindrical member is moved towards said needle base.

10. A hypodermic syringe adapted to use liquid-containing ampules with imperforate cork closure, comprising an elongated outer shell member, a ringer grip member mounted on the shell member, a tubular needle base detachably mounted at one end of the shell member and adapted to mount at one end of its tube a hypodermic needle, a piston. mounted at one of its ends within one end of the outer shell, a barrel plunger member removably and telescopically slidable within the outer shell and adapted to receive 4therein an ampule, a tubular perforating member extending beyond the other end of the piston, providing a continuous passage-Way for the contents of the ampule to the hypodermic needle.

11. A hypodermic syringe adapted to use liquid-containing ampules with imperforate cork closure, comprising a -mounting structure composed of an elongated outer shell member and a piston concentric of the central portion of the shell member, a tubular puncturing needle member detachably associated with said mounting structure, and an extension base member having a passage therethrough and adapted to mount a detachable hypodermic needle at an end of said passage.

l2. A hypodermic syringe adapted to use liquid-containing ampules with imperforate cork closure, comprising a mounting structure composed of an elongated outer shell member and a piston concentric of the central portion of the shell member, a tubular puncturing needle member detachably associated with said mountingv structure, and an extension base member having a passage therethrough and adapted to mount a detachable hypodermic needle at an end of said passage, an'd a plunger barrel member having 'a chamber therein adapted to receive an ampule closed by an imperforate cork in such manner that the cork is punctured by the said puncturing needle upon pressure on the plunger.

In testimony whereof I have signed my name to this specification.

GEORGE N. HEIN.

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