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Marker system and related stereotactic procedure

  • US 5,954,647 A
  • Filed: 04/26/1996
  • Issued: 09/21/1999
  • Est. Priority Date: 02/14/1995
  • Status: Expired due to Term
First Claim
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1. A medical method comprising the steps, not necessarily in order, of:

  • positioning a patient for a first medical procedure;

    attaching a mechanically free locator to the patient, the locator having at least 3 fiducial markers thereon and being in registry with a portion of the patient;

    using the fiducial markers a first time to get precise positioning information relative to at least part of the patient;

    performing a first medical procedure on the patient;

    after the first medical procedure, removing the locator from the patient;

    at a later time after the removing of the locator, re-attaching the locator to the patient, the locator again being in registry with the portion of the patient and having an identical orientation relative to the portion of the patient as when the locator was previously attached;

    after the re-attaching step, using the fiducial markers a second time to get precise positioning information relative to the at least part of the patient;

    after the re-attaching step, performing a second medical procedure on the patient; and

    whereinbefore performing the second medical procedure, the patient is positioned using a positioner independent of the locator to adjust and secure at least the portion of the patient in a desired position.

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