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Irrigation/aspiration apparatus

  • US 5,810,765 A
  • Filed: 06/05/1995
  • Issued: 09/22/1998
  • Est. Priority Date: 06/30/1994
  • Status: Expired due to Fees
First Claim
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1. An irrigation/aspiration apparatus for ophthalmic surgery comprising:

  • an irrigation means, including an irrigation hand-piece, for supplying an irrigation fluid contained in an irrigation bottle to a patient'"'"'s eye;

    an irrigation flow rate varying means for varying the irrigation flow rate of the irrigation fluid to the irrigation hand-piece in response to a flow rate control signal;

    an aspiration means, including an aspiration pump, for aspirating the irrigation fluid with removed tissues from the patient'"'"'s eye in response to an aspiration control signal;

    a control means for respectively supplying the flow rate control signal and the aspiration control signal to the irrigation flow rate varying means and the aspiration means; and

    input means for supplying an operation control signal to the control means;

    wherein the control means controls the operation of the irrigation flow rate control means and the aspiration means, in response to the operation control signal, to maintain the biocavity pressure and capacity of the anterior chamber of the patients'"'"'s eye at substantially constant levels when the irrigation means is operated alone or simultaneously with the aspiration means.

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