초록 ▼

A fluid flow control apparatus specially adapted for use with an ultrasonic surgical tool which provides for irrigation of a surgical site and for aspirating fluid from the site comprises a source of irrigation fluid, comprises an irrigation fluid conduit for conducting the irrigation fluid to a sur

A fluid flow control apparatus specially adapted for use with an ultrasonic surgical tool which provides for irrigation of a surgical site and for aspirating fluid from the site comprises a source of irrigation fluid, comprises an irrigation fluid conduit for conducting the irrigation fluid to a surgical site, an aspiration fluid conduit for conducting fluid away from the surgical site, a suction pump connected to the aspiration fluid conduit for aspirating fluid from the surgical site, a pressure-sensitive control system for removing the source of suction from the aspiration conduit when a predetermined value of suction is exceeded, and a valve for controllably admitting irrigation fluid into the aspiration fluid conduit. A check valve in the irrigation conduit prevents a reverse surge when the irrigation fluid is admitted to the aspiration conduit.

대표청구항 ▼

A fluid control apparatus for use with a surgical irrigation and aspiration instrument adapted for irrigation and aspiration of a surgical site located in a small elastic chamber, said fluid control apparatus comprising: an irrigation fluid conduit means including valve means for conducting irrigati

A fluid control apparatus for use with a surgical irrigation and aspiration instrument adapted for irrigation and aspiration of a surgical site located in a small elastic chamber, said fluid control apparatus comprising: an irrigation fluid conduit means including valve means for conducting irrigation fluid from a single source of irrigation fluid to the surgical site, an aspiration fluid conduit means operatively connected to a source of vacuum for removing fluid from the surgical site, a single controllable pump means in fluid communication with said aspiration fluid conduit means for providing suction in said aspiration fluid conduit means, and a pressure sensitive transducer means in fluid communication with said aspiration fluid conduit means for generating, when said controllable pump means is pumping, a pump control signal for said controllable pump means proportional to the rise in vacuum in said aspiration fluid conduit means induced by said pump means, and said transducer means sensing a vacuum rise in said aspiration fluid conduit means and, a liquid pressure equalizing means for admitting irrigation liquid from the single source of irrigation liquid when said valve means is opened to said aspiration fluid conduit means when a blockage occurs therein to vent the vacuum therein so as to remove the blockage, said pressure equalizing means allowing the equalizing of the pressure in said aspiration and irrigation conduit means.