Position sensing system for orthopedic applications

A - Human Necessities – 61 – B

Patent

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A61B 5/06 (2006.01) A61B 5/05 (2006.01) A61B 17/00 (2006.01) G01V 3/11 (2006.01)

Patent

CA 2499457

A surgical tracking system includes a wireless position sensor, which is adapted to be implanted in a bone of a subject, and responsively to externally-applied magnetic fields within a working volume of the tracking system, to generate and transmit sensor signals indicative of coordinates of the position sensor within the bone. A plurality of field generator coils are adapted to generate the magnetic fields so as to define the working volume. The field generators are fixed in predetermined locations to a reference structure, which is movable relative to the subject in order to position the working volume so as to intercept the bone. A system controller is coupled to receive and process the sensor signals so as to determine the coordinates of the position sensor within the bone.

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