Determining and illustrating a structure

摘要

An volume of a patient can be mapped with a system operable to identify a plurality of locations and save a plurality of locations of a mapping instrument. The mapping instrument can include one or more electrodes that can sense a voltage that can be correlated to a three dimensional location of the electrode at the time of the sensing or measurement. Therefore, a map of a volume can be determined based upon the sensing of the plurality of points without the use of other imaging devices. An implantable medical device can then be navigated relative to the mapping data.

主权项

1. A system to identify a structure in a volume, comprising:
an instrument operable to be moved in the volume; a first position element positioned near a first end of the instrument; a display device operable to display a map of an internal surface of the volume; and a processor configured to:
evaluate an electrical property sensed with the first position element,generate a substantially pristine virtual filled volume superimposed on the displayed map of the internal surface, anddetermine with input from the instrument a portion of the substantially pristine virtual filled volume superimposed on the displayed map of the internal surface that represents a physical surface of the volume.