Shunt valve system

Details Shunt valve system Shunt valve system

1991-05-15

1994-04-19

Hafer, Robert A.

Surgery

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

604 9, A61M 500

Patent

active

053041143

ABSTRACT:
This invention relates to a CSF shunting system that can be used in the human body for the control of hydrocephalus or excess cerebrospinal fluid (CSF) in the ventricles of the brain. The invention relates to the configuration of a fluid pressure controlling diaphragm which has a substantially planar, non-arched, or slightly convex occluding surface that contacts as its valve mechanism a non-planar opposing surface. The diaphragm element can be made out of silicone rubber or some other flexible material, and the opposing surface can be made from a dissimilar material from the diaphragm element to prevent sticking. The invention also relates to the configuration of this substantially flat diaphragm element, its central stem, and its mounting in a frame so as to facilitate pre-loads, calibrations, and optical, as well as mechanical, tests for quality assurance. The invention further relates to a confirmation of this pressure control invention in a larger shunt body geometry, which provides for modular, distal, and occlusion elements, and articulating shape to better fit the contour of a patient's skull.

REFERENCES:
patent: 3827439 (1974-08-01), Schulte et al.
patent: 3901245 (1975-08-01), Spitz et al.
patent: 4364395 (1982-12-01), Redmond et al.
patent: 4464168 (1984-08-01), Redmond et al.
patent: 4552553 (1985-11-01), Schulte et al.
patent: 4560375 (1985-12-01), Schulte et al.
patent: 4588394 (1986-05-01), Schulte et al.

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