Check valve for infusion and transfusion apparatus

Details Check valve for infusion and transfusion apparatus Check valve for infusion and transfusion apparatus

1983-09-16

1985-09-10

Pellegrino, Stephen C.

Fluid handling

Line condition change responsive valves

Direct response valves

604247, F16L 1100, A61M 514

Patent

active

045400270

ABSTRACT:
The check valve for infusion and transfusion apparatus comprises a hollow cylindrical member of elastic material which has an open end for the inflow of fluid and an opposite closed end. The hollow cylindrical member has a side wall with an incision in a portion thereof which extends into the hollow interior and provides a flow passage in a direction from the hollow interior outwardly of the cylindrical member. The cylindrical member advantageously has a flange at its entrance end which provides a means for mounting and supporting the valve member. The valve member may be disposed between two connected parts of a housing so that the flange is compressed therebetween and held in position. The construction is usable in a valve housing of a flexible line if the housing includes two interconnected parts which are assembled so as to hold the flange portion of the valve member therebetween. The part in question advantageously includes a flexible line which has a Y or similar connection or it may be arranged in a straight valve housing connection which for example may provide a cannula holder or a connection to the lower end of a drip chamber for example.

REFERENCES:
patent: 3109429 (1963-11-01), Schwartz
patent: 4005710 (1977-02-01), Zeddies
patent: 4063555 (1977-12-01), Ulinder
patent: 4232677 (1980-11-01), Leibinsohn
patent: 4405316 (1983-09-01), Mittleman
patent: 4429856 (1984-02-01), Jackson

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