Subcutaneous valve and device for externally setting it

Details Subcutaneous valve and device for externally setting it Subcutaneous valve and device for externally setting it

1995-06-26

1997-07-01

Weiss, John G.

Surgery

Devices transferring fluids from within one area of body to...

604 9, 137385, 251 65, A61M 500

Patent

active

056431945

ABSTRACT:
A subcutaneous vane for the external regulation of fluid flow, said valve including a body comprising a substantially cylindrical and flat internal chamber having a central axis; an inlet pipe and a drain pipe formed in the lateral wall of said chamber and adapted to be connected respectively to a catheter for supplying a fluid and to a catheter for draining a fluid from said chamber; a rotor mounted in said chamber to rotate about said central axis; a non-return valve formed at the inner end of the inlet pipe and having a moveable valve element and a valve seat, said moveable valve element closing said valve when the valve element is engaged in the valve seat; a curved leaf spring fixed to said rotor generally parallel to the lateral wall of the chamber and urging the valve element into the valve seat; two micromagnets mounted in spaced relation in the motor on opposite sides of said central axis; locking means for locking the rotor in predetermined selected positions; the micromagnets being mounted to move linearly in said rotor in a substantially radial direction to actuate said locking means; whereby said locking means cannot be altered by strong external unidirectional magnetic fields and whereby said locking means can be locked only by a specifically applied bidirectional magnetic field.

REFERENCES:
patent: 4443214 (1984-04-01), Marion
patent: 4540400 (1985-09-01), Hooven
patent: 4551128 (1985-11-01), Hakim et al.
patent: 4595390 (1986-06-01), Hakim et al.
patent: 4676772 (1987-06-01), Hooven
patent: 4779614 (1988-10-01), Moise
patent: 5167615 (1992-12-01), East et al.

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