Syringe check valve

Details Syringe check valve Syringe check valve

1986-12-30

1988-06-21

Truluck, Dalton L.

Surgery

Means for introducing or removing material from body for...

Treating material introduced into or removed from body...

604256, 2511491, A61M 2500

Patent

active

047522879

ABSTRACT:
A syringe check valve for use with a flexible catheter tube. The valve includes a rigid tubular cap and an elastomeric valve member. The valve member is partially inserted into a flexible catheter tube and the rigid cap is slipped over the valve member to maintain the flexible tube on the valve member and to force the valve slot in the valve member closed. The valve is used by inserting the blunt end of a syringe into a tapered cylindrical bore in the valve member which is in communication with the valve slot. The contact of the end of the syringe with the interior walls of the tapered cylindrical bore forces open the valve slot and allows passage of fluid through the valve.

REFERENCES:
patent: 3138161 (1964-06-01), Allen
patent: 3192949 (1965-07-01), De See
patent: 3352531 (1967-11-01), Kilmarx
patent: 3477438 (1969-11-01), Allen et al.
patent: 3495594 (1970-02-01), Swanson
patent: 3577992 (1971-05-01), Merry
patent: 3601152 (1971-08-01), Kenworthy
patent: 3831629 (1974-08-01), Mackal et al.
patent: 3837381 (1974-09-01), Arroyo
patent: 4143853 (1979-03-01), Abramson
patent: 4205683 (1980-06-01), O'Neill
patent: 4244379 (1981-01-01), Smith
patent: 4421296 (1983-12-01), Stephens
patent: 4545367 (1985-10-01), Tucci

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