Patent ID: 11911113
Assignee: AURIS HEALTH, INC.
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 14:
15. A method of tracking an instrument, the method comprising:
determining, relative to a global coordinate system, a first spatial relationship between a first electromagnetic (EM) field volume associated with a first structure and a second EM filed volume associated with a second structure;
after movement of the first structure relative to the second structure, determining a modified spatial relationship between the first EM field volume and the second EM field volume relative to the global coordinate system;
detecting a first position sensor of a set of one or more position sensors within a first electromagnetic (EM) field volume associated with a first set of EM field generators, the first position sensor being associated with an instrument;
in response to said detecting the first position sensor within the first EM field volume, activating the first set of EM field generators;
detecting the first position sensor in an overlapping EM field volume where the first EM field volume overlaps with a second EM field volume associated with a second set of EM field generators; and
in response to said detecting the first position sensor in the overlapping EM field volume, activating the second set of EM field generators.