Imaging, electrical potential sensing and ablation catheters

Details Imaging, electrical potential sensing and ablation catheters Imaging, electrical potential sensing and ablation catheters

A - Human Necessities

61

B

A61B 8/12 (2006.01) A61B 18/04 (2006.01) A61M 25/00 (2006.01)

Patent

CA 2471106

An acoustic system for use within a heart has a catheter (6), an ultrasound device (10) incorporated into the catheter (6), and an electrode (300, 304, 334, 394) mounted on the catheter (6). The ultrasound device (10) directs ultrasonic signals toward an internal structure in the heart to create an ultrasonic image, and the electrode (300, 304, 334, 394) is arranged for electrical concert with the internal structure. A chemical ablation device (55, 86, 314, 396) mounted on the catheter (6) ablates at least a portion of the internal structure by delivery of fluid to the infernal structure. The ablation device (55) may include a material that vibrates in response to electrical excitation, the ablation being at least assisted by vibration of the material. The ablation device may alternatively be a transducer (414) incorporated into the catheter (6), arranged to convert electrical signals into radiation and to direct radiation toward the internal structure. The electrode may be a sonolucent structure (304, 334) incorporated into the catheter (6).

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