Patent ID: 9642674
Date: 2017-05-09
CPC Classifications: A61B

Claim:
1. A medical apparatus, comprising: a probe, adapted for insertion into a heart, the probe comprising an elongated body, and a mapping electrode disposed on a distal portion of the body; a memory having programs stored therein; a display; and a processor linked to the display and being coupled to access the memory to execute the programs, the processor being connectable to receive an input provided by the mapping electrode, wherein the programs cause the processor to perform the steps of: obtaining electrocardiographic signals from a target in the heart via the mapping electrode; holding a series of the electrocardiographic signals in a beat buffer; freezing the beat buffer to prevent replacement by new beats; identifying a beat in the beat buffer indicating a PVC (premature ventricular contraction), said beat being a PVC beat, acquiring a PVC point based on the PVC beat, said PVC point only being acquired if the cycle length of the PVC beat falls within a predetermined range; identifying an SR (sinus rhythm) beat from the beat buffer, said SR beat representing normal sinus rhythm; acquiring an SR point based on said SR beat; displaying the PVC point and the SR point on a single electroanatomic map; associating the local activation time (LAT) of the PVC point with the SR point in a single representative display, said association being accomplished by assigning the LAT of the PVC to the SR point; and generating a further electroanatomic map, said further electroanatomic map being an SR-PVC map, said SP-PVC map reflecting the assignment of the LAT of the PVC to the SR point, said SR-PVC map reflecting a geometry of the heart during sinus rhythm, while reflecting activation time of the heart while experiencing PVC, whereby ablation may be performed at data-adjusted SR points with an ablation catheter displayed in SR locations, wherein navigation of an ablation electrode may be guided by the SR-PVC map.