Attitude and pressure responsive valve

Details Attitude and pressure responsive valve Attitude and pressure responsive valve

1988-02-22

1989-11-28

Rosenbaum, C. Fred

Surgery

Devices transferring fluids from within one area of body to...

With flow control means

604247, 137 38, A61M 500

Patent

active

048834564

ABSTRACT:
A pressure and attitude responsive valve comprises a resilient substantially cylindrical hollow valve body having an opening in one end to receive a pressurized fluid to be regulated. The opposite valve body end is closed by a frusto-conical end wall having a central opening therein. A valve ball, larger than the opening but smaller than the valve body bore, is disposed within the valve body to open or close the opening depending on the attitude of the valve body. Longitudinal slits in the wall of the valve body permit resilient deformation of the wall and an opening of the slits upon occurrence of a predetermined pressure gradient. The valve is disposed in a valve housing in series with a check valve to comprise a shunt valve assembly for treatment of hydrocephalus.

REFERENCES:
patent: 1144657 (1915-06-01), Keller
patent: 2376123 (1945-05-01), Cohen
patent: 2969066 (1961-01-01), Holter et al.
patent: 3566875 (1971-03-01), Stoehr
patent: 3861415 (1975-01-01), Larsen
patent: 3889687 (1975-06-01), Harris et al.
patent: 3926375 (1975-12-01), Reeder et al.
patent: 4215695 (1980-08-01), Spitz et al.
patent: 4605395 (1986-08-01), Rose et al.
patent: 4621654 (1986-11-01), Holter
patent: 4675003 (1987-06-01), Hooven
patent: 4694651 (1987-09-01), Yardley et al.

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