Electromagnetic tracking method and system
First Claim
1. An electromagnetic tracking system, comprising:
- an electromagnetic coil arrangement, the electromagnetic coil arrangement comprising a set of electromagnetic sensors at fixed locations with respect to each other, each of the electromagnetic sensors comprising a planar coil coupled to a conductive layer, the planar coil comprising non-concentric rings;
at least one complementary electromagnectic sensor; and
a processor configured to process a signal comprising data indicative of a mutual inductance between the at least one complementary electromagnetic sensor and each of the set of the electromagnetic sensors of the electromagnetic coil arrangement.
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Accused Products
Abstract
Provided is an electromagnetic coil arrangement comprising a set of electromagnetic sensors at fixed locations with respect to each other, each of the electromagnetic sensors comprising a planar coil coupled to a conductive layer, the planar coil comprising non-concentric rings. Further, provided is an electromagnetic tracking system, comprising an electromagnetic coil arrangement, at least one complementary electromagnetic sensor and a processor configured to process a signal comprising data indicative of a mutual inductance between the at least one complementary electromagnetic sensor and each of the set of the electromagnetic sensors of the electromagnetic coil arrangement. Also, provided are a method of tracking and a method of manufacturing an electromagnetic coil arrangement.
68 Citations
13 Claims
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1. An electromagnetic tracking system, comprising:
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an electromagnetic coil arrangement, the electromagnetic coil arrangement comprising a set of electromagnetic sensors at fixed locations with respect to each other, each of the electromagnetic sensors comprising a planar coil coupled to a conductive layer, the planar coil comprising non-concentric rings; at least one complementary electromagnectic sensor; and a processor configured to process a signal comprising data indicative of a mutual inductance between the at least one complementary electromagnetic sensor and each of the set of the electromagnetic sensors of the electromagnetic coil arrangement. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of electromagnetic tracking, comprising:
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positioning at least one complementary electromagnetic sensor in a volume of interest with respect to a coil arrangement adjacent to the volume of interest, the coil arrangement comprising a set of electromagnetic sensors at fixed locations with respect to each other, each of the electromagnetic sensors comprising a substrate, a conductive layer coupled to the substrate, and a planar coil coupled to the substrate on an opposite side of the substrate from the conductive layer, the planar coil comprising non-concentric rings; and sensing a magnetic field characteristic of a magnetic field generated by either the at least one complementary electromagnetic sensor or at least one of the set of electromagnetic sensors. - View Dependent Claims (9, 10, 11, 12, 13)
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Specification