Patent ID: 7174201
Filing Date: 2007-02-06
Classification: A61B

Abstract:
1. Apparatus for performing a medical procedure on a tissue within a body of a subject, comprising: a wireless tag configured to be fixed to the tissue and comprising a first sensor coil; a medical device having a second sensor coil fixed to the medical device for use in performing the procedure; and a processing and display unit, comprising: a plurality of radiator coils, which generate electromagnetic fields in a vicinity of the tissue, thereby causing a first current and a second currents to flow, respectively, in the first sensor coil of the wireless tag and the second sensor coil of the medical device; processing circuitry for receiving a first signal and a second signal from the wireless tag and from the medical device, respectively, indicative of the first current and the second current, and to process the signals so as to determine position and orientation coordinates of the tag relative to the medical device; a display, coupled to the processing circuitry so as to present a visual indication to an operator of the medical device of a position and orientation of the medical device relative to the tag; and a case, containing the plurality of radiator coils, processing circuitry and display as an integral unit.