US2378718A - Syringe - Google Patents

Description

June 19,1945. P. s. MADSEN 'ET AL SYRINGE ori inal Filed July 28, 194

Fig. 1.

Patented June 19, 1945 i UNITED STATES PATENT OFFICE `2378318. SYRINGE h Paul S; Madsen', Bethany, and Arthur Arnold, Hamden, Conn., assig'nors to, The Seamless Rubber Company, New Haven, C'onn., a corporation of Connecticut Original application July 28, 1941, SerialNo.

- 1942, Serial No; 447,o32

" 6 Claims. o. 123-229 This invention .relates to syringes, thepresent application being a division of our application Serial No. 404382, filed July`28, 1941, 'now Patent No. 2,317,545, dated April 27, 1943. u

One of the objects of the invention is the provision of a syringe in which the 'syringe tube can be readily applied to and detached' from the water receptacle, so that the 'water receptacle is adapted to serve in other capacities thanes a part of `a fountain syringe, `the. device having an improved form of connection between the syringetube and the receptacle which greatly facilitates manipulation and use( I Another object which we have n viewis to provide an improved fountain syringe of the elastic-bag type. l

To these and other ends the invention consists in the novel features and combinations of parts to be hereinafter described and claimed.

In the accompanying drawing: j

i Fig. lisa face View of adevice embodying our .improvementsshowing thesame' in position for use as a fountain syringe; 1

Fig. 2 is an enlarged section online of Fig. 3 is a sectional view of a portion of the receptacle with the syringe 'tube detached and the valve closed; and

Fig. 4' 's an enl'arged section online 4-4 of In the drawing, we have shown at o a reend on a, suitable supporting wall or the like. At Il is shown a syringe tube adapted to be plugged into or removed from the receptacle, the connection between the tube and the receptacle being generally indicated at IZ.

The receptacle n in this particular instance is a flat rectangular bag of rubber, adapted to serve under certain conditions as a water bag or ice bag, and provided With a special end closure, as described in our Patent No. 2,273,128, dated February 17, 1942. This special end closure is generally indicated at l3 in Fig. 3, and it will be seen that when usedfor fountain syringe purposes this end `closure is at the lower end of the bag, with the connection l2, previously mentioned, located slightly'above the end closure. The connection l2 enables the rubber syringe tube Il to communicate with a water chamber in the bag, the bottom wall of the Water chamber being constituted in part by a partition M, from which extends a rollable necl: !5, as described in the application above mentioned.

The connection I2 comprises as a part thereof Divided and this application June 15,

a valve housing I 6, formed integrally with the walls of ;the rubber bag, a part of this housing preferably merging into *the partition I 4, as shown. Within the valve housing !6 is a valve plug l'l. This valve plug l'l, which is made of rubber, is provided with a laterally extending `strong 'compression by an inner ring-like integral rubber part of the valve housing, in-

' ceptacle adapted to be supported from its upper dicated at 22.

The syringe 'tube H is provided at its free` plug and between those portions of the plug a't opposite sides of 'the slit. This causes theinner end' portions of the' valve plug or member to be spread' apart against'the yielding action of the surrounding elastic valve housing so that the nipple will be in free communication with the interior of the receptacle. It will also be apparent from Fig. 3 that when' the nipple is withdrawn the elastic portions of the valve member on opposite sides of the slit will be returned to the tightly abutting relation so as to seal the valve opening effectively against leakage.

As the valve is a, self-closing valve, no screw stopper or similar closing device is required, which may become loose in the use of the article. 'It is only necessary to insert the nipple into the socketed valve body to establish connection of the tube H with the liquid receptacle so as to adapt the device for use as a fountain syringe, and it is only necessary to withdraw the nipple used with the self-closing valve, in order to convert the device into a water bag or ice bag.

When the bag is Suspended on a supporting Wall, it may be engaged with a nail, hook or the like, entering a small opening 24 near the upper edge of the bag. This opening 24 is provided in a thick wall portion 25, having a slot 26 open to the edge of the bag. In case a hook is used,

the free end thereof may be accommodated in 2 A i 2,378,71s

the slot 26. This obviates the necessity of providing a projecting tab on the bag.

It will be noted that the connection between the syringe tube and the bag body is located at one of the side faces of the bag, and that the axis of the valve member is arranged on a slight upward and inward inclination, there being an acute angle between this axis and the lower part of the bag face at that side in which the tube is entered. This enables the tube to be inserted in an upward and inward direction, which is a matter of convenience in assembling .the parts, and by this arrangement, also, a larger, more effective valve and coupling structure may be employed than would otherwise be the case. The valve and coupling structure projects only slightly from the bag face, as shown in the drawing, and this does not detract materially from the generally streamlined appearance which the bag may have.

While we have shown a preferred embodiment of our invention, it will be noted that it is capable of being embodied in many different forms, and that various modiflcations and changes can be made without departure from the principles of the invention or the scope of the claims.

What we claim is:

1. A fountain syringe comprising an elastic bag provided with a filling opening, a fiexible syringe tube intended to be connected to the bag so that a controlled flow of liquid may pass through the tube from the bag, and a common means provided on the bag for securing the one end of the syringe tube to the bag and establishing communication between the interior of the tube and the interior of the bag, said common means providing for the removal of the syringe tube from i the bag and the self-closing of the bag against leakage upon such removal, and said common means including an elastic rubber valve member held under compression in an integral elastic portion of the bag wall.

2. A fountain syringe comprising an elastic bag provided with a filling opening, a fiexible syringe tube intended to be connected to the bag so that a controlled flow of liquid may pass through the tube from the bag, and a common means provided on the bag for securing the upper end of the syringe tube to the bag and establishing communication between the interier of the tube and the interior of the bag, said common means providing for the removal of the syringe tube from the bag and the self-closing of the bag against leakage upon such removal, said common means including an elastic rubber valve member held under compression in an integral elastic portion of the bag Wall, said valve member being constituted by a plug having an entrance portion for the tube formed with a socket, and the plug being split rearwardly of the socket and being adapted to 'be opened up for establishing communication of the tube with the bag interior and for effective gripping and holding of the tube end.

3. A fountain syringe comprising a fiexible syringe tube, a syringe bag of elastic material carrying in one wall a valve, said valve having a rubber body with portions adapted to grip the tube from opposite sides in order. to ,secure the tube to the bag With the bag interior in communication with the tube, said rubber valve body being held under compression in an expansible valve housing portion formed directly in the bag wall.

4. A fountain syringe having a licuid receptacle and a syringe tube; said receptacle having associated with its wall a valve, said valve comprising resilient movable means normally closing the receptacle but movable to open position by the impingement of the syringe tube.

' 5. A fountain syringe having a liquid receptacle and a syringe tube, said receptacle having mounted in its wall structure a valve of elastic material, said valve having a resilient movable,

PAUL s. MADSEN. ARTHUR A. ARNOLD.

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