Patent ID: 9730602
Date: 2017-08-15
CPC Classifications: A61B

Claim:
1. A system comprising: a catheter configured to be inserted into a heart cavity having an endocardium surface and to be moved to each of multiple different positions in the heart cavity, the catheter comprising electrodes configured to measure signals that are based on electrical activity in the heart cavity; a sensor device configured to determine positions of the electrodes with respect to the endocardium surface, for each of the multiple different positions; and a processing unit configured to determine physiological information at multiple locations of the endocardium surface based on the positions of the electrodes and the signals, wherein the sensor device is configured to determine positions of the catheter with respect to the endocardium surface in a first coordinate system and to register a representation of the endocardium surface with the first coordinate system; wherein the processing unit is configured to determine physiological information at multiple locations of the endocardium surface based on the positions of the electrodes and the signals by applying a transformation function to the signals, the transformation function relating signals from at least some of the multiple different positions to the physiological information at the multiple locations of the endocardium surface based at least in part on the positions of the catheter with respect to the endocardium surface; and wherein the signals are measured during multiple electrical heart beat cycles and the physiological information is determined, at least in part, by combining information derived from the signals for different heart beat cycles.