Electrophysiological cardiac mapping system based on a non-contact non-expandable miniature multi-electrode catheter and method therefor
AssigneeCase Western Reserve University
InventorYoram Rudy
Life of this patent
Estimating the term…
Abstract
A system (10) for determining electrical potentials on an endocardial surface of a heart is provided. The system includes a non-contact, non-expandable, miniature, multi-electrode catheter probe (12), a plurality of electrodes (32) disposed on an end portion (30) thereof, means for determining endocardial potentials (14) based on electrical potentials measured by the catheter probe, a matrix of coefficients that is generated based on a geometric relationship between the probe surface, and the endocardial surface. A method is also provided.
Claims12
A system for determining electrical potentials on an endocardial surface of a heart, the system comprising:
- a non-contact catheter probe having a surface and a terminal end portion adapted to be positioned in a cavity of the heart, the terminal end portion being adapted to be conformed into a first elongate shape and at least one second curved shape that includes a spiral shape, wherein the terminal end portion is conformed without expanding the terminal end portion;
- a plurality of electrodes disposed on the end portion of the probe, the electrodes being adaptable to measure electrical potentials in the cavity;
- imaging means for capturing geometric data on the probe and the endocardial surface;
- means for determining a geometric relationship between the probe surface and the endocardial surface based on the geometric data;
- means for generating a matrix of coefficients representing the geometric relationship between the probe surface and the endocardial surface;
- and,
- means for determining endocardial potentials based on catheter probe electrode potentials and the matrix of coefficients.
A system for determining electrical potentials on an endocardial surface of a heart, the system comprising:
- a non-contact catheter probe having a surface and a terminal end portion adapted to be positioned in a cavity of the heart, the terminal end portion being cylindrical in cross-section and adapted to be conformed into a first elongate shape and at least one second curved shape that includes a spiral shape, wherein the terminal end portion is conformed without expanding the terminal end portion;
- a plurality of electrodes disposed on the end portion of the probe, the electrodes being adaptable to measure electrical potentials in the cavity;
- imaging means for capturing geometric data on the probe and the endocardial surface;
- means for determining a geometric relationship between the probe surface and the endocardial surface based on the geometric data;
- means for generating a matrix of coefficients representing the geometric relationship between the probe surface and the endocardial surface;
- means for determining endocardial potentials based on catheter probe electrode potentials and the matrix of coefficients;
- means for generating electrograms based on the determined endocardial potentials;
- and,
- means for generating isochrone maps based on the electrograms.
A system for determining electrical potentials on an endocardial surface of a heart, the system comprising:
- a non-contact catheter probe means, having a surface and a terminal end portion, for position in a cavity of the heart, the terminal end portion being cylindrical in cross-section and adapted to be conformed into a first elongate shape and at least one second curved shape that includes a spiral shape, wherein the terminal end portion is conformed without expanding the terminal end portion;
- electrode means disposed on the end portion of the probe, for measuring electrical potentials;
- imaging means for capturing geometric data on the probe and the endocardial surface;
- means for determining a geometric relationship between the surface of the probe means and the endocardial surface based on the geometric data;
- means for generating a matrix of coefficients representing the geometric relationship between the surface of the probe means and the endocardial surface;
- means for determining endocardial potentials based on catheter probe electrode potentials and the matrix of coefficients;
- means for generating electrograms based on the determined endocardial potentials;
- and,
- means for generating isochrone maps based on the electrograms.
Dependencies are inferred from the claim text.