Endocardial chamber mapping system
First Claim
Patent Images
1. An endocardial chamber mapping system comprising:
- a) a catheter assembly having;
i) an array of signal acquisition electrodes expandable from a substantially cylindrical shape to an expanded shape, andii) a catheter plug with multiple connections, each of the connections being electrically coupled to one of said array of acquisition electrodes;
b) an interface apparatus having;
i) an interface plug connected to the catheter plug to establish electrical connection to each of the electrodes,ii) a voltage acquisition apparatus in communication with the interface plug and coupled to said array of acquisition electrodes, said voltage acquisition apparatus having an analog to digital converter for digitizing voltages on said array of acquisition electrodes, andiii) a signal generator in communication with one or more of said array of voltage acquisition electrodes for generating low current pulses; and
c) a computer having;
i) electrical communication with the signal generator of the interface apparatus to control its function,ii) electrical communication with the voltage acquisition apparatus to receive the voltages acquired by the signal acquisition electrodes,iii) processing unit to compute a three-dimensional volumetric electric field distribution based on the voltages received from the signal acquisition electrodes, andiv) a display showing the computed field distribution.
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Abstract
An endocardial mapping system is described to map electric field activity in a heart chamber. The system includes a catheter assembly having an expandable array of electrodes and a plug with each electrode connected to a single connection in the plug. The system also contains an interface apparatus with a plug adapter to receive the catheter plug, a voltage acquisition apparatus, and a signal generator to generate signals in response to voltages received on the electrodes. Finally, the system contains a computer capable of computing a three-dimensional volumetric electric field distribution based on signals received from the signal generator.
169 Citations
7 Claims
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1. An endocardial chamber mapping system comprising:
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a) a catheter assembly having; i) an array of signal acquisition electrodes expandable from a substantially cylindrical shape to an expanded shape, and ii) a catheter plug with multiple connections, each of the connections being electrically coupled to one of said array of acquisition electrodes; b) an interface apparatus having; i) an interface plug connected to the catheter plug to establish electrical connection to each of the electrodes, ii) a voltage acquisition apparatus in communication with the interface plug and coupled to said array of acquisition electrodes, said voltage acquisition apparatus having an analog to digital converter for digitizing voltages on said array of acquisition electrodes, and iii) a signal generator in communication with one or more of said array of voltage acquisition electrodes for generating low current pulses; and c) a computer having; i) electrical communication with the signal generator of the interface apparatus to control its function, ii) electrical communication with the voltage acquisition apparatus to receive the voltages acquired by the signal acquisition electrodes, iii) processing unit to compute a three-dimensional volumetric electric field distribution based on the voltages received from the signal acquisition electrodes, and iv) a display showing the computed field distribution. - View Dependent Claims (2, 3)
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4. An endocardial chamber mapping system comprising:
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a) a catheter assembly having i) an array of signal acquisition electrodes expandable from a substantially cylindrical shape to a substantially spherical shape, and ii) an electrical connector plug with multiple connectors electrically coupled to each of the electrodes present in said array; b) voltage acquisition apparatus in communication with the electrodes of said array, having an analog to digital converter for converting the voltages on said array to corresponding signals; and c) a computer having i) an electrical communication with the voltage acquisition apparatus to receive the voltage acquired by the signal acquisition electrodes, ii) a processing unit capable of computing a three-dimensional volumetric electric field distribution based on the signals acquired at the signal acquisition electrodes, and iii) a display for displaying the three-dimensional volumetric electric field distribution via an iso-potential map overlaid on a display of the heart geometry. - View Dependent Claims (5, 6, 7)
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Specification