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Devices and methods for percutaneous surgery

  • US 6,217,509 B1
  • Filed: 01/20/1999
  • Issued: 04/17/2001
  • Est. Priority Date: 03/22/1996
  • Status: Expired due to Term
First Claim
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1. A method for performing a spinal surgical procedure in a patient'"'"'s body, comprising:

  • inserting a cannula into a patient through skin and tissue to create a working channel to the spine;

    creating a working space in communication with the working channel and adjacent the spine;

    providing a viewing element having a lens at its distal end and a body with a ring sized to substantially encircle the cannula;

    inserting the viewing element through the working channel to position the lens at the working space;

    mounting the viewing element to the cannula by clamping the ring about the cannula;

    providing an aspiration channel with an opening adjacent the working space; and

    aspirating through the aspiration channel to draw air through the working channel and the working space.

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