Patent ID: 9585586
Date: 2017-03-07
CPC Classifications: A61B

Claim:
1. A method of detecting dislodgement of a navigational reference within a localization field, the method comprising: placing a reference catheter including at least one reference localization element within a localization field; securing the reference catheter at an initial reference location within the localization field; computing a slow-moving average location of the at least one reference localization element; computing a fast-moving average location of the at least one reference localization element; computing a distance between the slow- and fast-moving average locations of the at least one reference localization element; comparing the computed distance to a dislodgement threshold; and determining that a dislodgement of the reference catheter from the initial reference location has occurred; and generating a signal indicative of the dislodgement of the reference catheter from the initial reference location.