Catheter with radiofrequency heating applicator

Surgery – Truss – Pad

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Details

128401, 128786, 128804, 606 33, A61B 504, A61N 500

Patent

active

049459120

ABSTRACT:
Radiofrequency (RF) heating applicator, located at the distal end of a coaxial line catheter, produces deeper and more uniform heat dissipation. The active applicator element is a conductor helix fed via the coaxial line. The applicator has provisions for interception of intracardiac electrogram signal. A cardiac ablation system using the above catheter, ablates cardiac tissue responsible for ventricular tachycardia. The ablation system provides means to monitor intracardiac electrograms and to control the RF power. A variation of the helical applicator can be used in a hyperthermia system for treatment of malignant tumors.

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patent: 4785815 (1988-11-01), Cohen
patent: 4825880 (1989-05-01), Stauffer et al.
Ryan et al., "Variations in the Design . . . Hyperthemia", Proc. 14th Annual NF Bio Conf. IEEE, Mar. 1988, pp. 130-132.
Satoh et al., "Implantable helical coil microwave antenna . . . ", Int. J. Hypertheromia, vol. 4, No. 5, 1988, pp. 497-512.
Lyons et al., "Localized Hyperthermia . . . Array", IEEE Trans. Biomed Eng., vol. 31, No. 1, pp. 53-54, Jan. 1984.
Lin et al., "An implantable . . . Hyperthermia", Proc. of the IEEE, vol. 75, No. 8, pp. 1132-1133, Aug. 1987.

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