Aspiration control
First Claim
Patent Images
1. Apparatus for controlling aspiration in a microsurgical system, comprising:
- a pressurized gas source;
an aspiration chamber;
a vacuum generator;
a surgical device for aspirating tissue;
a first fluid line fluidly coupling said pressurized source and said vacuum generator;
a second fluid line fluidly coupling said vacuum generator and said aspiration chamber;
a third fluid line fluidly coupling said aspiration chamber and said surgical device;
a fourth fluid line fluidly coupling said pressurized gas source and said aspiration chamber independent of said vacuum generator and said surgical device;
a vacuum proportional valve fluidly coupled on said first fluid line between said pressurized gas source and said vacuum generator;
a pressure proportional valve fluidly coupled on said fourth fluid line between said pressurized gas source and said aspiration chamber;
a pressure transducer fluidly coupled to said aspiration chamber;
a proportional controller; and
a computer electrically coupled to said vacuum proportional valve, said pressure proportional valve, said pressure transducer, and said proportional controller;
whereby upon the selection of a desired suction pressure for said aspiration chamber via said proportional controller, said pressure transducer determines an actual suction pressure in said aspiration chamber and provides a first signal corresponding to said determined suction pressure to said computer, and said computer provides a second signal to said vacuum proportional valve and a third signal to said pressure proportional valve to maintain said actual suction pressure proximate said desired suction pressure.
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Abstract
A microsurgical system capable of controlling aspiration via a vacuum control mode, a suction control mode, or a flow control mode.
50 Citations
6 Claims
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1. Apparatus for controlling aspiration in a microsurgical system, comprising:
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a pressurized gas source; an aspiration chamber; a vacuum generator; a surgical device for aspirating tissue; a first fluid line fluidly coupling said pressurized source and said vacuum generator; a second fluid line fluidly coupling said vacuum generator and said aspiration chamber; a third fluid line fluidly coupling said aspiration chamber and said surgical device; a fourth fluid line fluidly coupling said pressurized gas source and said aspiration chamber independent of said vacuum generator and said surgical device; a vacuum proportional valve fluidly coupled on said first fluid line between said pressurized gas source and said vacuum generator; a pressure proportional valve fluidly coupled on said fourth fluid line between said pressurized gas source and said aspiration chamber; a pressure transducer fluidly coupled to said aspiration chamber; a proportional controller; and a computer electrically coupled to said vacuum proportional valve, said pressure proportional valve, said pressure transducer, and said proportional controller; whereby upon the selection of a desired suction pressure for said aspiration chamber via said proportional controller, said pressure transducer determines an actual suction pressure in said aspiration chamber and provides a first signal corresponding to said determined suction pressure to said computer, and said computer provides a second signal to said vacuum proportional valve and a third signal to said pressure proportional valve to maintain said actual suction pressure proximate said desired suction pressure. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification