Surgery – Devices transferring fluids from within one area of body to... – With flow control means
Patent
1991-04-04
1991-12-03
Yasko, John D.
Surgery
Devices transferring fluids from within one area of body to...
With flow control means
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:
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patent: 3527226 (1970-09-01), Hakim
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patent: 4867741 (1989-09-01), Portnoy
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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".
Cermak Adam J.
Cordis Corporation
Yasko John D.
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