Blood shut-off valve

Details Blood shut-off valve Blood shut-off valve

1976-12-27

1978-12-26

Wolk, Morris O.

Chemical apparatus and process disinfecting, deodorizing, preser

Blood treating device for transfusible blood

Oxygenator

128214C, 128214D, 422 47, A61M 103

Patent

active

041314310

ABSTRACT:
Blood shut-off valve is positioned at the outlet of a blood oxygenator arterial reservoir so that the valve closes when the reservoir is emptied to prevent flow. Valve has a member which floats in the blood and an outlet valve seat against which the member rests in the absence of blood, together with a constraint which positions the member near the seat, but protects it from hemodynamic closing forces.

REFERENCES:
patent: 2018769 (1935-10-01), Tryon
patent: 2796883 (1957-06-01), Thompson
patent: 2817689 (1957-12-01), White
patent: 3491790 (1970-01-01), Sanford
patent: 3513845 (1970-05-01), Chesnat
patent: 3717174 (1973-02-01), De Wall
patent: 3898045 (1975-08-01), Bowley
patent: 3929157 (1975-12-01), Serur
patent: 3993067 (1976-11-01), Schachet
patent: 4000738 (1977-01-01), Howell

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