Surgery – Miscellaneous – Devices placed entirely within body and means used therewith
Reexamination Certificate
2011-04-19
2011-04-19
Marmor, II, Charles A (Department: 3735)
Surgery
Miscellaneous
Devices placed entirely within body and means used therewith
Reexamination Certificate
active
07926491
ABSTRACT:
Embodiments of the invention are directed to an apparatus for use in a system that senses an excitable wireless target capable of being implanted in a body or tissue. The apparatus includes multiple electromagnetic field sensors arranged approximately in a common plane, and multiple sense signal output paths coupled to the sensors. Each one of the sensors and corresponding output paths is configured to provide an output signal representing at least a portion of an electromagnetic field provided by the marker, where the output signal is proportional to a component of the field at the sensor, where that component is substantially perpendicular to the plane. Various other configurations regarding this apparatus, as well as the overall system and methods of exciting and receiving signals from wireless markers, are also disclosed.
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Newell Laurence J.
Wright J. Nelson
Calypso Medical Technologies, Inc.
Hopkins Christine D
Marmor II Charles A
Perkins Coie LLP
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