Patent ID: 8175681
Filing Date: 2012-05-08
Classification: A61B,G01S

Abstract:
1. A system for tracking an instrument within a volume, comprising: a first electromagnetic tracking system including a first tracking device operable to determine a position of the first tracking device within a first tracking domain; a second electropotential tracking system including: an instrument having a first portion connected to the first tracking device and a second portion connected to the second tracking device to allow tracking of the instrument with at least one of the first tracking system or the second tracking system, wherein the second portion is operable to move relative to the first portion to place the second tracking device at a known position relative to the first tracking device; a controller in communication with the first electromagnetic tracking system and the second electropotential tracking system; wherein the controller is operable to determine a registration of the first tracking domain and the second tracking domain based on at least the position of the first tracking device relative to the second tracking device within the volume; wherein the registration is operable to allow tracking of the instrument with either of the first electromagnetic tracking system or the second electropotential tracking system in the volume.