Overpressure safety valve

Details Overpressure safety valve Overpressure safety valve

1985-01-09

1987-06-09

Recla, Henry J.

Surgery

Blood drawn and replaced or treated and returned to body

604118, 604247, 604151, 604319, A61M 1600

Patent

active

046717862

ABSTRACT:
An overpressure safety valve assembly for use during heart surgery is disclosed. The assembly comprises an elongated tubular body portion having an inlet end, and an outlet end and an unidirectional valve disposed therebetween. A relief valve portion is joined to and in flow communication with the tubular portion. The relief valve portion includes a first relief valve configured to open if the pressure within the overpressure safety valve diminishes below a predetermined level, and a second relief valve configured to open if the pressure adjacent the outlet end exceeds a predetermined level.

REFERENCES:
patent: 2652831 (1953-09-01), Cheslen
patent: 3556122 (1971-01-01), Laerdal
patent: 3626978 (1971-12-01), Hoekstra
patent: 3633613 (1972-01-01), Julow
patent: 3661174 (1972-05-01), Cripe
patent: 3818929 (1974-06-01), Braukmann
patent: 3905382 (1975-09-01), Waterson
patent: 4084606 (1978-04-01), Mittleman
patent: 4540413 (1985-09-01), Russo
patent: 4544370 (1985-10-01), Elliott et al.
Delta Medical Industries, "Do You Vent the Left Heart?"-VRV-200B brochure-1579 Sunland Lane, Costa Mesa, Calif. 92626.

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