Magnetic ball valve and control module

Details Magnetic ball valve and control module Magnetic ball valve and control module

1996-10-25

1999-05-18

Buiz, Michael

Surgery

Means for introducing or removing material from body for...

Treating material introduced into or removed from body...

604 30, 604 65, A61M5/00

Patent

active

059046694

ABSTRACT:
An improved valve utilizes a ball or sphere positioned within a housing which is movable by source of magnetic force external to the housing, the housing having a fluid inlet and a fluid outlet, and a sealing member positioned within the housing adjacent the fluid inlet or the fluid outlet. A modular control valve apparatus is provided having at least one or a plurality of valves in the housing, each having a fluid inlet and a fluid outlet, and a passage from a source of fluid or aspiration to an instrument or other device to direct and/or utilize the fluid or aspiration. Control is provided by including one or more pressure monitors, such as diaphragms positioned in recesses in a surface of the housing, coupled to passageways connected to passageways leading to fluid flow conduits. Variations in pressure in the conduits are transmitted from the diaphragm to a sensor such as a transducer to generate a signal, which activates a correcting electronic circuit which in turn controls a pump for a vacuum system. Provision is made to prevent contamination of the monitoring system by providing a hydrophobic filter between each passageway leading to the conduit and the diaphragm.

REFERENCES:
patent: 3990452 (1976-11-01), Murry et al.
patent: 4180074 (1979-12-01), Murry et al.
patent: 4184510 (1980-01-01), Murry et al.
patent: 4189286 (1980-02-01), Murry et al.
patent: 4689040 (1987-08-01), Thompson
patent: 5676650 (1997-10-01), Grieshaber et al.
patent: 5693013 (1997-12-01), Geuder

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