DETERMINING THE POSITION OF AN ELECTRODE RELATIVE TO AN INSULATIVE COVER
First Claim
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1. A method of determining that an instrument is exposed to a conductive medium, comprising:
- positioning the instrument within a volume;
determining a first position of a first position element and a second position element both connected to the instrument;
determining a second position of the first position element and the second position element connected to the instrument;
comparing the determined first position and the determined second position; and
determining whether map data collected with the instrument is valid on the basis of whether at least one of the first position element and the second position element is insulated from the conductive medium in the volume by an insulator of the instrument.
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Abstract
A 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.
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Citations
19 Claims
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1. A method of determining that an instrument is exposed to a conductive medium, comprising:
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positioning the instrument within a volume; determining a first position of a first position element and a second position element both connected to the instrument; determining a second position of the first position element and the second position element connected to the instrument; comparing the determined first position and the determined second position; and determining whether map data collected with the instrument is valid on the basis of whether at least one of the first position element and the second position element is insulated from the conductive medium in the volume by an insulator of the instrument. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method of determining that an instrument is exposed to a conductive medium, comprising:
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positioning the instrument within a volume; determining a maximum distance the instrument can travel in the volume; determining the position of the instrument at a selected timestep; determining whether the determined position of the instrument is past the maximum distance; and marking the instrument as sheathed if it is determined that the instrument has traveled further than the maximum distance. - View Dependent Claims (17, 18, 19)
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Specification