US 12,310,676 B2
Navigation at ultra low to high frequencies
Bradley W. Jacobsen, Erie, CO (US); Victor D. Snyder, Erie, CO (US); and Andrew J. Wald, Fort Worth, TX (US)
Assigned to Medtronic Navigation, Inc., Louisville, CO (US)
Filed by Medtronic Navigation, Inc., Louisville, CO (US)
Filed on Nov. 22, 2022, as Appl. No. 17/992,604.
Prior Publication US 2024/0164843 A1, May 23, 2024
Int. Cl. A61B 34/20 (2016.01); A61B 5/06 (2006.01)
CPC A61B 34/20 (2016.02) [A61B 5/062 (2013.01); A61B 2034/2051 (2016.02)] 30 Claims
OG exemplary drawing
 
1. A system comprising:
a processor; and
a memory storing instructions thereon that, when executed by the processor, cause the processor to:
transmit, to at least one of a tracking device and one or more objects in an environment, a signal according to a set of frequencies, wherein a frequency range associated with the set of frequencies is from about 300 Hz to about 30 MHz;
determine a distortion in association with an electromagnetic field sensed at the tracking device, wherein the distortion is determined with respect to the set of frequencies, and wherein the distortion is based at least one a relative permeability associated with the one or more objects in the environment;
identify, from among the set of frequencies, a set of second frequencies at which a magnitude of the relative permeability associated with the one or more objects is less than a threshold value;
transmit, to at least one of the tracking device and the one or more objects in the environment, the signal according to one or more frequencies of the set of second frequencies; and
provide navigation information associated with the environment and the tracking device in response to transmitting the signal according to the one or more frequencies, wherein the navigation information comprises pose information of the tracking device.