Normally closed automatic reflux valve
First Claim
1. A valve device comprising:
- a first body element having an input opening therethrough;
a second body element which complements said first body element and having an outlet opening therefrom;
a resilient valve disc mountable between said first and second body elements;
first means with one body element for supporting the disc at the center thereof;
means with the other body element for holding said disc firmly against said first means in such a manner that said disc is restrained from sideways movement; and
means adjacent said valve disc for engagement by a syringe to open said normally closed disc to permit injection and aspiration of fluids through the device.
2 Assignments
0 Petitions
Accused Products
Abstract
A normally closed, one-way check valve having a body composed of two cylindrical containers which complement each other, each of said containers having a tubular projection with a liquid opening therethrough, one of said cylindrical chambers provided with a plurality of longitudinally extending ribs therealong for preventing sticking of a valve disc as contained within an assembled valve device, also further including a traverse bar for pressing against a valve disc. The other body component is provided with a pointed triangular support and also a plurality of radially extending ribs for preventing a valve disc from opening so far as to close off the egress port provided with said second element, together with a rubber resilient valve disc which is retained between the pointed triangular support and the traverse bar when the unit is assembled by sonic welding into a permanently assembled device. The assembled device further includes a circumferential ring having a pair of projecting legs, each leg having a rib on the free end thereof for reinforcement and direct engagement with the resilient valve disc for the purpose of opening same when the ring is moved under the force of the tip of a syringe.
357 Citations
17 Claims
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1. A valve device comprising:
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a first body element having an input opening therethrough; a second body element which complements said first body element and having an outlet opening therefrom; a resilient valve disc mountable between said first and second body elements; first means with one body element for supporting the disc at the center thereof; means with the other body element for holding said disc firmly against said first means in such a manner that said disc is restrained from sideways movement; and means adjacent said valve disc for engagement by a syringe to open said normally closed disc to permit injection and aspiration of fluids through the device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A normally closed one-way check valve comprising:
- a first cylindrical chamber having an opening centrally thereof;
a second cylindrical chamber having an opening centrally thereof, said first cylindrical chamber having a slightly smaller external diameter than the internal diameter of said second cylindrical chamber so that it complements and fits inside thereof for forming an overall closed chamber body element;
one of said cylindrical chambers provided with a traverse bar thereacross;
the other cylindrical chamber provided with a pointed support member;
a resilient disc mounted in compression between said pointed support member and said traverse bar in such a manner that a depression is made in the central area of said disc so that said disc is restrained from sideways movement within the valve body element chamber; and
means provided within said first cylindrical chamber for opening the normally closed resilient disc. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
- a first cylindrical chamber having an opening centrally thereof;
Specification