# US 2026/0083384 A1 · Weighted Analysis of Electrodes on Different Sides of a Multi-Electrode Catheter > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2026/0083384 A1 - Document ID: US20260083384A1 - Status: Published application - Kind: A1 - Application number: 19/334,648 - Filed: 2025-09-19 - Published: 2026-03-26 - Earliest claimed: 2024-09-23 - Assignees: Biosense Webster (Israel) Ltd. - Applicants: Biosense Webster (Israel) Ltd. - Inventors: Liat Tsoref; Haim Rodriguez; Shmuel Yitzhak Pfeffer - Web page: https://patentgrep.com/patent/US20260083384A1 ## CPC - A61B 5/367: Electrophysiological study [EPS], e.g. electrical activation mapping or electro-anatomical mapping - A61B 5/287: Holders for multiple electrodes, e.g. electrode catheters for electrophysiological study [EPS] - A61B 5/6852: {Catheters} - A61B 5/6859: {with multiple distal splines} - A61B 5/6869: {Heart} - A61B 18/1492: {having a flexible, catheter-like structure, e.g. for heart ablation (A61B18/1477 takes precedence)} - A61B 2560/0468: Built-in electrodes - A61B 2562/046: in a matrix array - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) ## Abstract A multi-electrode catheter with a first plurality of electrodes on a first side and a second plurality of electrodes on a second side is used to detect electrical activity within a heart of a patient. One of the first plurality of electrodes faces toward cardiac tissue at a first location and one of the second plurality of electrodes faces away from the cardiac tissue. A signal analysis is performed for the first location based on first signals received from the electrode facing toward cardiac tissue and second signals received from the electrode facing away from the cardiac tissue. The signal analysis includes application of a weighting to at least one of the first signals and the second signals. This process is repeated for a plurality of further locations of cardiac tissue in the heart and, based on the signal analysis, at least one electro-anatomical map of the heart is generated. ## Claims ### Claim 1 A method comprising: (a) receiving electrical activity from a multi-electrode catheter within a heart of a patient, wherein the multi-electrode catheter has a first plurality of electrodes on a first side and a second plurality of electrodes on a second side, wherein at least one of the first plurality of electrodes on the first side is proximate to cardiac tissue at a first location and at least one of the second plurality of electrodes on the second side is facing away from the cardiac tissue in the heart; wherein the electrical activity is received from at least one electrode on the first side and the at least one electrode on the second side; (b) performing a signal analysis of electrical activity at the first location of cardiac tissue based on first signals received from the at least one electrode on the first side and second signals received from the at least one electrode on the second side, wherein the signal analysis includes application of a weighting to at least one of the first signal and the second signal; (c) repeating steps (a)-(b) for a plurality of further locations of cardiac tissue in the heart; and (e) generating, based on the signal analysis, at least one electro-anatomical map of the heart depicting electrical activity or scar tissue at the first location and the plurality of further locations of cardiac tissue. ### Claim 2 (depends on 1) The method of claim 1, wherein the first plurality of electrodes and the second plurality of electrodes are bi-polar electrodes or ring-shaped electrodes. ### Claim 3 (depends on 1) The method of claim 1, wherein the at least one of the first plurality of electrodes on the first side is in contact with cardiac tissue at the first location. ### Claim 4 (depends on 1) The method of claim 1, wherein the at least one of the second plurality of electrodes on the second side is in contact with blood flowing in the heart. ### Claim 5 (depends on 1) The method of claim 1, wherein the first plurality of electrodes on the first side and the second plurality of electrodes on the second side are separated by a dielectric layer. ### Claim 6 (depends on 1) The method of claim 1, further comprising determining a tissue proximity index associated with proximity of the at least one of the first plurality of electrodes on the first side to the cardiac tissue at the first location, wherein the signal analysis of electrical activity at the first location of cardiac tissue is based at least on a value of the tissue proximity index. ### Claim 7 (depends on 1) The method of claim 1, wherein the signal analysis further comprises: determining first slope values associated with the first signals received from the at least one electrode on the first side; determining second slope values associated with the second signals received from the at least one electrode on the second side; and determining whether the first plurality of electrodes on the first side or the second plurality of electrodes on the second side is facing the cardiac tissue based on an analysis of the first slope values and the second slope values. ### Claim 8 (depends on 7) The method of claim 7, wherein the determining of whether the first plurality of electrodes on the first side or the second plurality of electrodes on the second side is facing the cardiac tissue based is based on one or more ratios of one of the first slope values and of one of the second slope values. ### Claim 9 A system comprising: one or more processors in communication with a plurality of electrodes of a multi-electrode catheter; and a memory in communication with a display and the one or more processors; wherein the one or more processors are collectively configured to perform the following for each of a plurality of locations in a heart of a patient: receive electrical activity from a multi-electrode catheter within the heart, wherein the multi-electrode catheter has a first plurality of electrodes on a first side and a second plurality of electrodes on a second side, wherein at least one of the first plurality of electrodes on the first side is proximate to cardiac tissue at a location and at least one of the second plurality of electrodes on the second side is facing away from the cardiac tissue in the heart; wherein the electrical activity is received from at least one electrode on the first side and the at least one electrode on the second side; perform a signal analysis of electrical activity at the location of cardiac tissue based on first signals received from the at least one electrode on the first side and second signals received from the at least one electrode on the second side, wherein the signal analysis includes application of a weighting to at least one of the first signal and the second signal; and generate, based on the signal analysis, at least one electro-anatomical map of the heart depicting electrical activity or scar tissue at each of the plurality of locations in the heart. ### Claim 10 (depends on 9) The system of claim 9, wherein the first plurality of electrodes and the second plurality of electrodes are bi-polar electrodes or ring-shaped electrodes. ### Claim 11 (depends on 9) The system of claim 9, wherein the at least one of the first plurality of electrodes on the first side is in contact with cardiac tissue at a first location. ### Claim 12 (depends on 9) The system of claim 9, wherein the at least one of the second plurality of electrodes on the second side is in contact with blood flowing in the heart. ### Claim 13 (depends on 9) The system of claim 9, wherein the first plurality of electrodes on the first side and the second plurality of electrodes on the second side are separated by a dielectric layer. ### Claim 14 (depends on 9) The system of claim 9, further comprising determining a tissue proximity index associated with proximity of the at least one of the first plurality of electrodes on the first side to the cardiac tissue at a first location, wherein the signal analysis of electrical activity at the first location of cardiac tissue is based at least on a value of the tissue proximity index. ### Claim 15 (depends on 9) The system of claim 9, wherein the signal analysis further comprises: determining first slope values associated with the first signals received from the at least one electrode on the first side; determining second slope values associated with the second signals received from the at least one electrode on the second side; and determining whether the first plurality of electrodes on the first side or the second plurality of electrodes on the second side is facing the cardiac tissue based on an analysis of the first slope values and the second slope values. ### Claim 16 (depends on 15) The system of claim 15, wherein the determining of whether the first plurality of electrodes on the first side or the second plurality of electrodes on the second side is facing the cardiac tissue based is based on one or more ratios of one of the first slope values and of one of the second slope values. ### Claim 17 A computer-readable storage medium comprising program code for causing a computer to perform the following for a plurality of locations of cardiac tissue in a heart of a patient: receive electrical activity from a multi-electrode catheter within the heart, wherein the multi-electrode catheter has a first plurality of electrodes on a first side and a second plurality of electrodes on a second side, wherein at least one of the first plurality of electrodes on the first side is proximate to cardiac tissue at a location and at least one of the second plurality of electrodes on the second side is facing away from the cardiac tissue in the heart; wherein the electrical activity is received from at least one electrode on the first side and the at least one electrode on the second side; perform a signal analysis of electrical activity at the location of cardiac tissue based on first signals received from the at least one electrode on the first side and second signals received from the at least one electrode on the second side, wherein the signal analysis includes application of a weighting to at least one of the first signal and the second signal; and generate, based on the signal analysis, at least one electro-anatomical map of the heart depicting electrical activity or scar tissue at each of the plurality of locations in the heart. ### Claim 18 (depends on 17) The computer-readable storage medium of claim 17, wherein the first plurality of electrodes and the second plurality of electrodes are bi-polar electrodes or ring-shaped electrodes. ### Claim 19 (depends on 17) The computer-readable storage medium of claim 17, wherein the at least one of the first plurality of electrodes on the first side is in contact with cardiac tissue at a first location. ### Claim 20 (depends on 17) The computer-readable storage medium of claim 17, wherein the at least one of the second plurality of electrodes on the second side is in contact with blood flowing in the heart.