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Instrumented and actuated guidance fixture for sterotactic surgery

DC
  • US 6,529,765 B1
  • Filed: 05/24/1999
  • Issued: 03/04/2003
  • Est. Priority Date: 04/21/1998
  • Status: Expired due to Term
First Claim
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1. A method for stereotactic surgery on a body comprising:

  • providing a surgical instrument;

    providing a guidance fixture that includes (a) a mounting base having a central axis, (b) a controllable instrument drive for moving the surgical instrument along a constrained trajectory in response to a drive control signal, (c) an actuated adjustment mechanism coupled between the mounting base and the controllable instrument drive and (d) a sensor system coupled to the adjustment mechanism;

    attaching the mounting base to the body;

    accepting a three-dimensional image of the body;

    determining a location of the mounting base in the three-dimensional image of the body; and

    generating and transmitting sensor signals encoding an orientation of the constrained trajectory and encoding a position of the surgical instrument along the constrained trajectory.

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