Catheter for RF ablation with cooled electrode and apparatus for

Details Catheter for RF ablation with cooled electrode and apparatus for Catheter for RF ablation with cooled electrode and apparatus for

1994-03-16

1997-12-16

Cohen, Lee S.

Surgery

Instruments

Electrical application

607 99, 607105, 607113, 607122, A61B 1739, A61N 105

Patent

active

056979274

ABSTRACT:
A catheter for radio frequency ablation with a cooled electrode for use in tissue having a surface comprising an elongate member having proximal and distal extremities. A metal conducting electrode secured to the distal extremity of the elongate member and having a chamber therein. A conductor extends through the elongate member from the proximal to the distal extremity for supplying radio frequency energy to the electrode. The elongate member has a lumen in the distal extremity which is in communication with the chamber. A coolant is disposed in the chamber and in contact with the electrode for dissipating heat created in the electrode by the application of radio frequency energy thereto.

REFERENCES:
patent: 4907589 (1990-03-01), Cosman
patent: 5230349 (1993-07-01), Langberg
patent: 5234004 (1993-08-01), Hascoet et al.
patent: 5334193 (1994-08-01), Nardella
patent: 5348554 (1994-09-01), Imran et al.
Huang, et al. "Increase in the lesion size and decrease in the impedance rise with a saline infusion electrode catheter for radiofrequency catheter ablation" (Circulation, vol. 80, No. 4, Oct. 1989, Supplement II.
Borggrefe, et al., "High frequency alternating current ablation of an accessory pathway in humans" (JACC, vol. 10, No. 3, Sep. 1987:576-82).
Wittkempf et al., "Radiofrequency Ablation With a Cooled Poroous Electrode Catheter," JACC vol. 11, No. 2, Feb. 1988:17A Abstracts.

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