US2271719A - Ampoule syringe - Google Patents

Description

Feb. 3, 1942. A. E. SMITH AMPOULE SYRINGE Filed April 3, 1935 WI w INVENTOR/ ARTHUR E. SMITH- ATTO BY.

Patented Feb. 3, 1942 PATENT. OFFICE sYamGE H Arth'ur E. Smith; Los Angeles, Calif]. Application April s, 1935. Serial No.1-i4.506

This invention relates to ampoule syringes.

The general object of this invention is to provide an improved ampoule syringe wherein novel means is provided for holding a medicinal preparation in the closure of the ampoule.

Another object of the invention is to provide a novel ampoule closure.

2 Claims. (01. 128 -272X Other objects and the advantages of this invention will be apparent from the following description taken in connection with the accompanying drawing, wherein:

Fig. 1 is a longitudinal sectional view through an ampoule syringe embodying the features of my invention;

Fig. 2 is a central sectional View of my improved ampoule;

Fig. 3 is a view similar to Fig. 2 showing a modified form of ampoule closure;

Fig. 4 is a fragmentary longitudinal sectional view showing a syringe with my modified ampoule therein; 1

Fig. 5 is a view similar to Fig. 2 showing a further modification;

Fig. 6 is a fragmentary longitudinal sectional View of a syringe showing the second modification; and

Fig. 7 is a fragmentary longitudinal sectional view showing a further modified form of ampoule closure.

Referring to the drawing by reference characters, I have shown my invention as embodied in a syringe indicated generally at l0. As shown this syringe includes a barrel ll having a rear closure l2 thereon Which includes a plunger I3 and having a front member l4 and in which a needle I5 is mounted. This needle [5 includes a pointed rear end l6 which is disposed within the syringe barrel.

The ampoule embodying the features of my invention is shown generally at and is preferably made of glass and is cylindrical and includes a rear movable cork 2| and a front stationary cork 22. The front cork is preferably made of rubber and includes a skirt portion 23 which engages the ampoule body and an end portion 24 which is imperforate. The cork 22 is preferably made of rubber and is provided with a chamber 25 which has a pair of circumferentially extending inwardly facing grooves 26 therein. In each of these grooves I seat a disk 21, which may be made of Celluloid and between the disks I arrange 'a medicinal preparation shown as in the form of a tablet 28.

In use, the ampoule is inserted in the syringe barrel and the rear closure I2 is screwed to position thus forcing the needle point [6 through the imperforate wall 24 of the ampoule closure and engaging the forward disk 21 which in turn engages the tablet28 and the latter: engages the rear disk 21 thus forcing the two disks and the tablet into the body of the ampoule so that the tablet may dissolve in the fluid contents of the ampoule. In the drawing the two disks 2'! are shown as disposed in an inclined manner on opposite sides of the point I 6 of the needle but since these disks are free it will be understood that they may assume any position within the ampoule after being displaced from the closure. The closure 22 being made of rubber engages the front member M of the syringe to effect a tight seal should any fluid leak around the needle.

In Fig. 3, the closure 30 includes a portion 3! which engages the interior of the ampoule andv a front portion 32 which engages the end of the ampoule. This front portion is imperforate and is adapted to be pierced by a needle such as shown in Fig. 1. The closure 30 is provided with chamber 30' which has a peripheral groove adjacent the outer end thereof in which a disk 33 is seated. This disk may b made of Celluloid and within the chamber I provide a pair of hemispherical cup members 34 which may be made of material such as Celluloid and which abut to form a'sphere and within this sphere I arrange a medicinal preparation which may be in the nature of a tablet 35.

In use, the ampoule is inserted in the syringe as previously described in connection with Fig, 1 and the needle after piercing the imperforate closure wall engages th sphere and pushes the sphere into the ampoule body and upon separation of the hemispherical members the medicinal preparation passes into the fluid contents of the ampoule.

In Figs. 5 and 6 the construction shown is similar to that shown in Figs. 3 and 4 except that a hemispherical cup member 36 is provided in which a medicinal tablet 31 is positioned instead of two spherical members and in use the operation is similar to that already described.

In Fig. 7 the ampoule 40 is provided with a closure 4| which has an end flange 42 thereon to engage the end of the ampoule. The closure is provided with a cavity 43 in which a medicinal preparation 44 is placed. Prior to its insertion in the ampoule a diaphragm member 45 which may be made of thin rubber or which may be made of very thin metal foil is stretched across the end of the closure to close the chamber 43. To

assemble this device the closure 4| is forced into the ampoule while the diaphragm 45 is held in place so that it is gripped between the ampoule wall and the body of the closure.

In use, pressure on the end of the resilient closure 4| will burst the foil or diaphragm 45 freeing the medicinal contents 44 or if desired the ampoul-e may be placed in the syringe barrel such as H] in Fig. 1 and the needle may then force the medicinal tablet 44 against the dia phragm 45 to rupture the latter.

From the foregoing description it will be apparent that I have invented a novel ampoule syringe that can be economically manufactured and which is highly efiicient in use.

Having thus described my invention, I'claim:

1. A cartridge closure comprising a body'havdevice for the open end of said chamber and located in said chamber, said device having a portion extending to the inner surface of said partition, said partition serving as a pressure medium to expel said sealing device upon pressure on the outer surface of the partition, said portion being at least in part free of the inner side walls of the chamber.

2. A cartridge closure comprising a body having a resilient imperforate penetrable partition and a chamber having one end open and the other end closed by said partition, and a sealing device for the end of the chamber and loing a resilient, imperforate, penetrable partition and a chamber having one end open and the other closed by said partition, and a sealing cated in the chamber, a sealing device ejecting means having a portion extending towards the inner surface of the partition, said partition serving as a pressure medium to move said ejecting means and thereby expel said sealing device upon pressure on the outer surface of the partition. ARTHUR E. SMITH.

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