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NEUROPHYSIOLOGICAL APPARATUS AND PROCEDURES

  • US 20090138050A1
  • Filed: 01/23/2009
  • Published: 05/28/2009
  • Est. Priority Date: 05/08/2003
  • Status: Active Grant
First Claim
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1. A method for determining the direction of a pedicle breach during hole formation, comprising the steps of:

  • forming an access corridor to a pedicle in a patient;

    forming a hole in the pedicle by advancing an instrument into the pedicle;

    rotating said instrument about a longitudinal axis during hole formation while applying a stimulation signal to said instrument; and

    determining the direction of said breach by monitoring neuromuscular responses to successive stimulation signals during the rotation of said instrument.

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