US1012700A

US1012700A - Syringe.

Info

Publication number: US1012700A
Application number: US59899610A
Authority: US
Inventors: Joseph Payne
Original assignee: Individual
Current assignee: Individual
Priority date: 1910-12-23
Filing date: 1910-12-23
Publication date: 1911-12-26
Anticipated expiration: 1928-12-26

Description

J. PAYNE.

SYRINGB.; APPLICATION FILED DBO. 23, 1910.

1,012,700. Patented 11110.26, 1911.

frm/anton Jose/2:71, Per, ne

FFUE,

JOSEPH PAYNE, or manen, mussncirrSEMS.

sYRQINGn To all whom tt may coment.' f Be it known that I, JOSEPH PAYNE, of Melrose, in the county` of Middlesex and State of Massachusetts,'have invented cer-A tain new and useful Improvements in.

Syringes, of which the following is a specifcation.- `k

This vinvention frelates to a syringe the barrel of which has a tubular outlet through which a liquid may be forced.

The invention relates primarily to a hypodermic syringe, the tubular-outlet being a hypodermic needle adapted to administer sub-cutaneous injections.

The invention has for its object to providea syringe of this characterof such construction that the barrel and its outlet may be-discarded after being once used, the syringe comprising, in addition to the barrel and its outlet, a barrel holder adapted to detachably engage the barrel 'and having a guidefor a piston rod adapted lto bear sepal rably on a piston contained in the barrel. The barrel, its tubular outlet, andthe piston therein are of relatively cheap construction,

so that after being yused they may bediscarded and replaced by another barrel similarly equipped. y

The invention consists in the improvements which I will now proceed to describ and claim. n g y Of the accompanying drawings which form a part of this spec1ication,-Figure 1 represents a perspective View of a piston sa barrel holder adapted to detachably engage a discardable barrel in accordance with my invention; Fig. 2 represents a perspective Y view of a piston rod adapted to be used with said holder; Fig. 3 representsv a longitudiw nal section of a complete syringe including a discardable barrel, constructed in accordance with my invention; Fig. 4 represents a section on line 4-4 of Fig. 3; Fig. 5 represents a fragmentary sectional view showing t-he piston Vrod coupled toa barrel holder;

Fig. 6 represents a longitudinal section of the barrel and its outletand piston removed from the holder; Fig. 7. represents an enlargement of Fig. 6; and Fig. `8 represents a fragmentary sectional viewshowing a different form of head at the outer end of the barrel.

Similar referencecharacters indicate the,

Speoioationof Ietters Patent.

In the drawings, 12, represents a syrin e open both ends, and is provided at one end with means for connecting a ltubular outlet 14 thereto, said outlet being preferadapted to serve, when in the position shown, as a stopper to retain a charge of l1qu1d 1n the barrel, and also to be moved Patented Dec. 26, 1911. l Appuuaaon 'mea nmmrfz'a mo. smal ma 598,996.

toward the outlet and thusl act as a piston to expel liquid through said outlet. The head 13 is preferably provided with a nipple 13 a portion also of soft rubber', surroundin of the cannula and securely yet exibly connecting it with the head, the cannula being provided with a cupped flange 14a at its inner end adapted-to contain a small body of sealing wax to prevent escape of liquid throughthe cannula until the wax is punctured by a wire inserted in the cannula. The barrel and its accessories abovedecost, so that it is entirely practicable to discard it after it has been once used, the said barrel constituting, in effect, a cartridge of which an indefinite number may be supplied for each holder, hereinafter described, the cartridge being used successively.

My invention includes a holder `for the- .barrel or cartridge above described, said scribed may be made at a relatively small rod 17 against the piston alsol pressingthe head 13 against the abutment.

In the preferred embodiment of my in'`v vention here shown, the holder comprises a semi-tubular portion 18, forming a tray into which the barrel may be inserted andfromwhich it may be removed by a lateral movement. The outer end of the tray, 18 is closed by an abutment '19', which as here shown, is a disk suitably secu-red to the half tube and provided with a recess 2O extend-- ing from `one edge to and across its center,

A said recess being adapted to receive-the nipple 13. The opposite end of the tray 18 A s rod guide 21l is` movable.

4 removed` and replaced by another 'barrel is lprovided with a tubular enlargement 18 constituting a casing in which the piston Said guide is a tube having at one end a head or handle/22,

and formed at its opposite end to be projected into the tray and-bear on the inner' end of the barrel 12, and preferably to slid-- ingly enter the barrel, as shown by Fig.\3.

23 represents a spring contained in the4 casing 18", said spring bearing at'one end n a shoulder within the casing, and at the other end on a shoulder on the guide 21, and being adapted to press the guide toward the barrel12.

The piston rod 17 is movable freely endwise in the guide, and is provided atfits outer end with a head or handle 24.

The rod isv separable from the guide `so that when a barrel is in place in the holder n' the rod may be stored beside the holder until its use is required.

When the guide 21is retracted, a barrel 12 inserted in the holder may be readily which is secured by the forward pressure of the guide 21 against it. To enable the guide 21 to be secured in la retracted position while the barrel is be-I ing removed and another inserted, I provide the ide with a pin 25 andv the casing 18"L w1th a slot 26. When the guide is rojected the pin enters the slot, as shown y Figs. 1 and 3. When it is desired to hold the guide in a retracted position, the guide is partially rotated to move the pin out of alinement Awith'the slot and cause the pin to bear on the rear end of the casing. v 4 l When the holder is not in use, the piston rodl 17 may be coupled to it bymeans of an external screw-thread 27, formed on one end of the rod, and an internal screwjthread. '28 formed in the inner end of the recess 20,

I 1 cess 20, forms a yielding support or cushion for the-cannula permitting it to yield or tip'sidewise,the cannula havlng therefore a flexible connection with the syringe, which isA an advantage. i

lIt will be seen that the portion of the head 13 interposedv between' the reduced outer end of the vbarrel and the abutment 19, isvcompressed by the outward pressure exerted on the barrel .by the piston rod guide 21, so that leakage of liquid. between the outer end of the barrel and the head is prevented.

In Fig. 8 I show the barrel 12 of uniform diameter to its outer end, and provided with a compressible head 13b formed as a plug or stopper preferably of soft rubber, having a flange 13 which bears on the outer end of the barrel and on the inner side of the abutment 19. The pressure of Fig. 8 also shows the flange v having at one end a tubular portion and at I the ff opposite end a barrel abutment -provided with anl opening to receive al contracted barrel outlet, the portion of the` I holder betweerr the tubular portion and the abutment being open at one. side and forming an open tray adapted to receive a bar.

rel, a tubular piston rod guide movable in said tubular portion and adapted tobe projected into the tray to engage one end of a 'syringe barrel inserted inthe tray and hold the opposite end of the barrel against the abutment, and a piston rod movable in said guide and adapted to be projected into a syringe barrel held by the tray, the rod being separable from the guide. j

2. \A syringe comprising a barrel holder having at one end a tubular portion and at the other end, a barrel abutment provided with an opening to receive a contracted bar rel outlet, vthe *portionv of the, holder between the tubular. portion and the abutmentbeing -open at one side and'forming an open tray adapted to receive a barrel, a tubular piston rod` guide movable in said tubular portion, and a spring whichnormally pro-` jects one end portion of said guide' into the tray, said projected end and the abutment engaging the end portions of the barrel and confining it to the tray.

3. A syringe comprising a barrel holder having at one end a tubular portion and at the other end a barrel abutment-provided A 4. A syringe comprising a barrel holder.

` having at one the opposite end a barrel abutment providedl end a` ltubular portion and at with an opening to receive a contracted lbarrel outlet, the portion of the holder between the tubular portion and the abutment being open at one side and forming an open tray adapted to receive a barrel and a tubular piston rod-'guide movable in said tubular portion, and adapted to be projected into the tray, a barrel adapted to be inserted laterally inv said tray and `formed 'at one end to bear on the abutment and at the opposite end to engagethe' projected end of the piston rod guide, said barrel having a stopper formed as a piston, and a tubular outlet formed to extend through the abutment, and a pist-on rod movable in said guide and separable therefrom and from the piston.

5. A syringe comprising a barrel holder open at one side to receive and permit the removal of a barrel, and provided aty one end with a barrel abutment and at theopposite end with piston rod movable 1n the guide and adapted to bear separately on a piston in a barrel engaged by the holder, the said abutment having an outlet-receiving recess, internally screw-threaded at its inner end, and the rod having an external screw-thread adapted to engage the internal thread ofthe recess to detachably connect the rod with the holder.

a piston rod guide, and a.

6. A syringe barrel composed of a glassv tube'open at oth ends and provided at itsv outer end with an elastic head having an elastic nipple, and a lcannula inserted in said nipple and flexibly connected with 'the barrel, said cannula -having a cupped lange projecting inwardly from its inner end and adapted to hold a seal in position to obstruct the passage through the cannula.

7. A syringe comprising a barrel holder open at one side to receive and permit the removal of a barrel and provided at one end with an abutment, and a barrel open at bothv ends and provided with an elastic head constituting a packing between` the abutment and the interior of the barrel, a portion of said^ head being interposed between the outer end of the barrel and the abutment,

and with a cannula having a liquid tight fit in said head, the holder being provided with means for pressing the barrel toward said abut-ment and thereby compressing the interposed portion of the head to maintain a liquid tight joint between the head and the barrel.

In testimony whereof I have 'alxed my signature, in presence of two witnesses.

. JOSlEl-lf AYNE.- Witnesses:

C. F, BROWN, P. W'. PEzzET'rI.