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Control system for ophthalmic surgical instruments

  • US 4,933,843 A
  • Filed: 11/04/1988
  • Issued: 06/12/1990
  • Est. Priority Date: 11/06/1986
  • Status: Expired due to Fees
First Claim
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1. A microsurgical control system for controlling a fluid pressure controlled microsurgical instrument, comprising:

  • pressure control means for coupling to a microsurgical instrument and for providing a controlled fluid pressure signal to said instrument;

    digitally programmed electronic circuit means coupled to said pressure control means for defining at least two different sets of response characteristics, each set of response characteristics comprising a predefined relationship in which a plurality of different input values each bears a one to one relationship to a corresponding output value;

    said electronic circuit means including means for selecting one of said different sets of response characteristics as the active set of response characteristics;

    actuator means coupled with said electronic circuit means for providing an input value to said electronic circuit means in response to human actuation;

    said electronic circuit means determining an output value from said input value in accordance with said active set of response characteristics and using said output value so determined to control the pressure provided to said instrument.

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