Surgery – Devices transferring fluids from within one area of body to... – With flow control means
Patent
1985-12-23
1987-12-22
Truluck, Dalton L.
Surgery
Devices transferring fluids from within one area of body to...
With flow control means
137504, 137508, 604247, A61M 2700
Patent
active
047144580
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, one side of which is in pressure communication with the drainage location of the body and the other side of which is in pressure communication with the ventricular spaces of the brain. The diaphragm includes a flexible valve seat which moves relative to a valve closure means and a fluid flow control means in response to applied pressure differentials, thus regulating passage of CSF from the ventricular spaces to the drainage location. When the pressure differential is relatively small, the valve operates in a constant pressure mode to maintain a predetermined pressure differential across the valve. In response to a sudden increase in differential pressure, the valve operates in a constant flow mode to maintain a desired relatively constant CSF flow rate through the valve. Above a predetermined pressure differential, the valve operates n a constant pressure mode to maintain a predetermined maximum pressure differential across the valve.
REFERENCES:
patent: 28722 (1860-06-01), Whitacher
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: 2684081 (1954-07-01), Chace
patent: 2960109 (1960-11-01), Wilson
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: 3654932 (1972-04-01), Newkirk et al.
patent: 3674050 (1972-07-01), Kuffer et al.
patent: 3693929 (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: 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: 4451128 (1985-11-01), Hakim et al.
patent: 4452423 (1984-06-01), Bevlavi
patent: 4627832 (1986-12-01), Hooven et al.
Cordis Corporation
Truluck Dalton L.
LandOfFree
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