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Method and apparatus using shaped field of repositionable magnet to guide implant

  • US 6,157,853 A
  • Filed: 02/09/1998
  • Issued: 12/05/2000
  • Est. Priority Date: 11/12/1997
  • Status: Expired due to Fees
First Claim
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1. An apparatus for providing rapid interactive display of the aligning torque of a magnet, the apparatus comprising:

  • (a) a moveable magnet assembly having a plurality of fiducial marks thereon;

    (b) a localizer comprising a plurality of imaging sensors configured to sense a position in three-dimensional space of the fiducial marks to thereby provide an indication of a location of the moveable magnet assembly; and

    (c) a processor including memory having stored therein a representation of a magnetic field generated by the movable magnet assembly and a display configured to present a graphical representation of the magnetic field, the processor being configured to be responsive to the indication of the location of the moveable magnet assembly provided by the localizer so that the display provides an indication of the magnetic field within a selected volume of space resulting from the movable magnet assembly when the magnet is at a position indicated by the localizer.

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