Hydrocephalus valve

Surgery – Devices transferring fluids from within one area of body to... – With flow control means

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604247, A61M 2700

Patent

active

050696637

ABSTRACT:
A hydrocephalus valve for relieving pressures in the brain by draining cerebrospinal fluid. The valve is coupled at an inlet end to a ventricular catheter for routing fluid from the brain and delivering that fluid to another body region. An outlet portion of the valve unit is coupled to a drainage catheter. Two different construction valves form a valve mechanism that regulates fluid flow from the brain. An inlet valve comprises a check valve to facilitate pumping of the valve unit and in addition, helps break up proteins suspended within the cerebrospinal spinal. At an outlet portion, a pressure control valve having a coiled spring for biasing a ball against a valve seat, controls pressure of the cerebrospinal fluid as it exits the valve mechanism and is delivered to the drainage catheter.

REFERENCES:
patent: 3288142 (1966-11-01), Hakim
patent: 3527226 (1970-09-01), Hakim
patent: 3889687 (1975-06-01), Harris et al.
patent: 3985140 (1976-10-01), Harris
patent: 4332255 (1982-06-01), Hakim et al.
patent: 4413985 (1983-11-01), Wellner et al.
patent: 4595390 (1986-06-01), Hakim et al.
patent: 4850955 (1989-07-01), Newkirk
patent: 4867741 (1989-09-01), Portnoy
patent: 4883456 (1989-11-01), Holter
Medos-"The Medos.TM. Nonprogrammable Hakim Valve System"-Sep. 1987-Information Manual.
"Cordis Integral Shunt System" Copyright Jun. 1987.
"Nonprogrammable Hakim Valve System for the Control of Hydrocephalus".

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