Apparatus for controlling fluid flow through a surgical instrume

Details Apparatus for controlling fluid flow through a surgical instrume Apparatus for controlling fluid flow through a surgical instrume

1995-04-11

1996-10-29

Green, Randall L.

Surgery

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

Treating material introduced into or removed from body...

604 28, 604 31, 604119, 606107, A61M 3100, A61M 100, A61F 900

Patent

active

055691889

ABSTRACT:
An apparatus essentially consisting of an aspiration conduit, a pump, and a pressure transducer and logic console which senses vacuum level fluctuations in the aspiration conduit. The aspiration conduit is connected to a surgical cavity. The pump creates a vacuum in the pre-pump aspiration conduit and transports the fluid and/or tissue material from the surgical cavity, through the aspiration conduit and into a collection container. The logic console responds to a predetermined rate of decrease in vacuum in the pre-pump aspiration conduit and causes an electric signal to be sent to 1) the pump, which upon receiving such signal, reverses its action and/or: 2) an electromechanical valve located along the aspiration conduit, which upon receiving such signal acts to occlude the aspiration conduit and terminate the removal of tissue or fluid from the surgical site. The reversal of rotation prevents the occurrence of a fluid surge which would result in the collapse of the surgical cavity. In addition a surgical tool is disconnected from its source of power when the temperature of the surgical tool is above a predetermined value.

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