Surgery – Devices transferring fluids from within one area of body to... – With flow control means
Patent
1986-10-21
1988-11-01
Truluck, Dalton L.
Surgery
Devices transferring fluids from within one area of body to...
With flow control means
137508, 604247, A61M 2700
Patent
active
047816724
ABSTRACT:
An implantable valve for controlling the passage of cerebrospinal fluid (CSF) from a ventricle of the brain to a suitable drainage location in the body includes a movable diaphragm responsive to pressure differentials between the ventricle and the drainage location. When the pressure differential is below a minimum threshold level, the valve is closed and CSF flow is prevented. When the pressure differential increases beyond the minimum threshold, the valve operates in a constant pressure mode to maintain a first predetermined CSF pressure differential across the valve. When the differential pressure increases beyond an intermediate threshold level, the valve operates in a flow control mode to maintain a desired CSF flow rate through the valve. When the pressure differential increases beyond a maximum threshold level, the valve operates in a constant pressure mode to maintain a second predetermined CSF pressure differential across the valve. To provide for the various valve operating modes, the valve includes a valve stem and a valve closure member, which coact with a valve seat carried on the diaphragm. The valve closure member defines an annular valving surface which coacts with the diaphragm to provide improved fluid control at low differential pressures.
REFERENCES:
patent: 28722 (1860-06-01), Whitacker
patent: 79436 (1868-06-01), Bechtel
patent: 1139455 (1915-05-01), Gase
patent: 1159214 (1915-11-01), Gueux
patent: 1199152 (1916-09-01), Bruce
patent: 1468434 (1923-09-01), Zander
patent: 2207382 (1940-07-01), McNamara
patent: 2290151 (1942-07-01), McCollum
patent: 2969066 (1961-01-01), Holter et al.
patent: 3109429 (1963-11-01), Schwartz
patent: 3233610 (1966-02-01), Wade
patent: 3270771 (1966-09-01), Morgan
patent: 3288142 (1966-11-01), Hakim
patent: 3308798 (1967-03-01), Snider
patent: 3492996 (1970-02-01), Fountain
patent: 3566875 (1971-03-01), Stoehr
patent: 3601128 (1971-08-01), Hakim
patent: 3633605 (1972-01-01), Smith
patent: 3654932 (1972-04-01), Newkirk et al.
patent: 3674050 (1972-07-01), Kuffer et al.
patent: 3683929 (1972-08-01), Holter
patent: 3756243 (1973-09-01), Schulte
patent: 3768508 (1973-10-01), Schulte
patent: 3769982 (1973-11-01), Schulte
patent: 3782410 (1974-01-01), Steuby
patent: 3804113 (1974-04-01), Garcea
patent: 3827439 (1974-08-01), Schulte et al.
patent: 3886948 (1975-06-01), Hakim et al.
patent: 3886968 (1975-06-01), Murrell
patent: 3889687 (1975-06-01), Harris
patent: 3901245 (1975-08-01), Spitz et al.
patent: 3924635 (1975-12-01), Hakim
patent: 3970105 (1976-07-01), Pelton et al.
patent: 3985140 (1976-10-01), Harris
patent: 3991768 (1976-11-01), Portnoy
patent: 3999553 (1976-12-01), Spitz
patent: 4103689 (1978-08-01), Leighton
patent: 4106510 (1978-08-01), Hakim et al.
patent: 4156422 (1979-05-01), Hildebrandt et al.
patent: 4167952 (1979-09-01), Reiniecke
patent: 4215695 (1980-08-01), Spitz et al.
patent: 4246930 (1981-01-01), Bishop
patent: 4332255 (1982-06-01), Hakim et al.
patent: 4340038 (1982-07-01), McKean
patent: 4437493 (1984-03-01), Okuda et al.
patent: 4443214 (1984-04-01), Marion
patent: 4452423 (1984-06-01), Bevlavi
patent: 4540400 (1985-09-01), Hooven
patent: 4624286 (1986-11-01), Frohn
patent: 4627832 (1986-12-01), Hooven et al.
patent: 4714458 (1987-12-01), Hooven
Cordis Corporation
Truluck Dalton L.
LandOfFree
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