Surgery – Devices transferring fluids from within one area of body to...
Patent
1997-03-24
2000-11-14
McDermott, Corrine
Surgery
Devices transferring fluids from within one area of body to...
604 9, 604247, A61M 500
Patent
active
061463523
ABSTRACT:
An implantable drainage valve for the treatment of hydrocephalus includes a housing having an opening at each end and a fluid passageway therebetween, a valve seat within the housing at one end, a closure element dimensioned to be seated in the valve seat, a spring member within the housing secured at the opening opposite the valve seat and a feeder disposed between the closure element and the spring which transmits force from the spring to the closure member. When the housing is in a substantially vertical position, the closure is subjected to a downward force including a force from the spring and the weight of the feeder.
REFERENCES:
patent: 3674050 (1972-07-01), Kuffer et al.
patent: 3889687 (1975-06-01), Harris et al.
patent: 5368556 (1994-11-01), Lecuyer
Cho David J.
Cordis SA
McDermott Corrine
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