Pressure sensor controlled valve

Details Pressure sensor controlled valve Pressure sensor controlled valve

1988-03-14

1988-11-29

Pellegrino, Stephen C.

Surgery

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

With flow control means

A61M 2700

Patent

active

047878860

ABSTRACT:
The sensor-valve disclosed herein is an element in a fluid shunting system such as used in hydrocephalus and controls the flow of fluid in the shunt system according to the difference in pressure at some point inside the valve and the pressure in a bodily region outside and near to the valve. This is accomplished by means of a flexible diaphragm portion of the valve which communicates with the shunt fluid pressure on one side and the bodily region pressure on the other, the pressure difference causing the diaphragm to move and thus change the degree of opening of the valve fluid passage aperture. This would, for example, enable maintaining the difference between ventricular fluid pressure and pressure at the brain's surface at some desired valve in the situation of an implanted hydrocephalus shunt valve system.

REFERENCES:
patent: 3762681 (1973-10-01), McKinney et al.
patent: 3769982 (1973-11-01), Schulte
patent: 3886948 (1975-06-01), Hakim
patent: 3901245 (1975-08-01), Spitz et al.
patent: 3999553 (1976-12-01), Spitz et al.
patent: 4464168 (1984-08-01), Redmond et al.

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