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METHOD AND APPARATUS FOR MAPPING A STRUCTURE

  • US 20090264738A1
  • Filed: 04/09/2009
  • Published: 10/22/2009
  • Est. Priority Date: 04/18/2008
  • Status: Active Grant
First Claim
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1. A position sensing and map generating unit, comprising:

  • a mapping instrument having a position element and operable to be located in a volume, wherein the mapping instrument includes at least one of;

    an inflatable portion;

    at least two electrodes as the position element;

    a guidewire operable to be positioned through a cannula;

    a plurality of the position elements along a length of the mapping instrument; and

    a temperature sensor;

    a position determination processor operable to determine a position of the mapping instrument;

    a display device operable to display a map based at least on the determined position of the mapping instrument;

    a display processor operable to augment the map on the display device, wherein the display processor is operable to at least one of;

    determine a position of the position element that is positioned to sense a voltage formed in the volume;

    determine a position of an input impedance reference electrode and display it on the display device relative to the map; and

    determine a pseudo position of the axis electrodes on the display device relative to the map;

    a physiological measuring device;

    an introducer operable to be located with the position determination processor;

    a reference electrode at a fixed position on a surface of the volume and a location of the reference electrode is operable to be determined with the position determination processor; and

    a procedure instrument with a second position element operable to be located relative to the map;

    wherein a map of a volume is displayed on the display device for visualization by a user based solely on determined positions of one or more of the position elements.

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