Cardiac ablation catheter having resistive mapping electrodes

Details Cardiac ablation catheter having resistive mapping electrodes Cardiac ablation catheter having resistive mapping electrodes

A - Human Necessities

61

B

A61B 5/02 (2006.01) A61B 5/042 (2006.01) A61B 18/14 (2006.01) A61N 1/06 (2006.01) A61B 17/00 (2006.01) A61B 17/39 (1990.01)

Patent

CA 2139338

A cardiac ablation catheter (10) includes a distal, energy delivering electrode (14) and at least one sensing electrode (16) proximal to the energy delivering electrode (14). The catheter communicates with an electrosurgical generator (22) which provides electrical energy, such as a radio frequency energy, to the distal energy (14). The sensing electrodes (16) communicate with a mon- itor (24) for recording electrical signals within the heart. One or more resistors (30) is positioned adjacent each sensing electrode (16), and in series with a conductor (20) associated with the sensing electrode (16), to reduce or eliminate any current tending to be emitted through the sensing electrodes (16) as a result of delivery of electrical current through the distal electrode (14).

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