RONEN, Shai,BZOSTEK, Andrew,JACOBSEN, Brad,WALD, Andrew
申请号：
US2019029141
公开号：
WO2019210065A3
申请日:
2019.04.25
申请国别(地区):
US
年份:
2019
代理人:
摘要：
Disclosed is a system to track a member in a volume. The system comprises a transmitter operable to generate an electro-magnetic field at a plurality of frequencies； a tracking device having at least a first sensor configured to sense the field at each frequency of the plurality of frequencies； a transmission system to transmit a signal regarding the sensed field at each of the frequencies； a processor system configured to: receive the signal, evaluate the received signal to determine if an interference is present, if an interference is determined to be present (i) evaluate a model of a flux including two or more circuits, (ii) determine a distortion free flux based on the modeled flux extrapolated to zero frequency and (iii) output the determined distortion free flux, and determine a position of the tracking device based on a distortion free field determined based on the determined distortion free flux. The system may be used to perform a procedure on a subject. The procedure may be any appropriate procedure. The navigation system may be used to account for the distortive effects of various conductive objects positioned near the subject on which the procedure is performed.L'invention concerne un procédé d'élimination de la distorsion d'un système de navigation. Le système de navigation peut être utilisé pour effectuer une procédure sur un sujet. La procédure peut constituer une quelconque procédure appropriée. Le système de navigation peut être utilisé pour tenir compte des effets de distorsion de divers objets conducteurs positionnés à proximité du sujet sur lequel est effectuée la procédure.
