Patent ID: 9220425
Filing Date: 2015-12-29
Classification: A61B

Abstract:
1. An apparatus for making a temporal, spatial electro-anatomical map of bioelectrically active tissue with fidelity and accuracy depicting a local electrogram with native dynamics while simultaneously including geometric and time domain specificity comprising: a catheter with a MOSFET sensor array for the detection of a bioelectric potential with each sensor of the MOSFET sensor array having a MOSFET locally disposed in or on the catheter proximate to a corresponding sensor pad, and wherein each sensor mimics a sensed biopotential via a variable resistor, a local amplifier and a ground potential which is set locally within a contact between a cell of the bioelectrically active tissue and the corresponding sensor pad; where the MOSFET sensor array detects a plurality of bioelectric potentials in the bioelectrically active tissue at a plurality of selectively chosen sites in the bioelectrically active tissue at a plurality of times; a memory for storing the detected plurality of bioelectric potentials and locations of the corresponding selectively chosen sites for each of the plurality of times; and a processor coupled to the MOSFET sensor array for differentiating between “near” and “far field” signals at each of the corresponding MOSFET sensors of the MOSFET sensor array, and for constructing the temporal, spatial electro-anatomical map of the bioelectrically active tissue from the stored plurality of bioelectric potentials and locations of the corresponding selectively chosen sites and plurality of times.