Method and system for navigating a catheter probe in the presence of field-influencing objects
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United States of America Patent
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Oct 16, 2012
Grant Date -
Dec 30, 2010
app pub date -
Sep 13, 2010
filing date -
Oct 28, 1999
priority date (Note) -
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Abstract
A system for and method of determining and compensating for the effect of a field influencing object on a field sensor, preferably a coil, that is within a navigational domain. The navigational domain contains navigational magnetic energy and disturbing magnetic energy, and the field influencing object produces the disturbing magnetic energy in response to the navigational magnetic energy. The correction system includes a first transmitter for projecting into the navigational domain field energy in a first waveform sufficient to induce a first signal value in the sensing coil. The system also includes a second transmitter for projecting into the navigational domain field energy in a second waveform sufficient to induce a second signal value in the sensing coil. The system further includes a signal processor for receiving the first signal value and for receiving the second signal value to determine the effect of the electrically conductive object on the field sensor. In other embodiments, the correction system may utilize a second sensing coil to receive and process an alternate aspect of the field energy from a position that is different from the first field sensor, or the system may utilize a storage device that contains information relating to the effect of the field influencing device within the navigational domain.
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- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
- ENTERPRISE MEDICAL TECHNOLOGY, INC.;MEDTRONIC NAVIGATION, INC.
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Jascob, Bradley A | Broomfield, US | 30 | 7078 |
Kessman, Paul | Lakewood, US | 42 | 8299 |
Martinelli, Michael A | Winchester, US | 20 | 4140 |
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