Radiofrequency ablation catheter

Abstract

Abstract A cardiac ablation apparatus including a solenoidal antenna (50) monitoring electrodes (47, 56), and a coupling network at a distal end of a catheter transmission line, and another coupling network at the proximal end of the catheter transmission line to connect the catheter to the source of radiofrequency (RF) power (4) and to an intracardiac electrogram monitor (59). Solenoidal antenna design includes single and multiple windings with varying geometrical features. Plated plastic tri-axial design of a transmission line offers unitary fabrication. A catheter with variable impedance electrode and gap coatings has features useful for both ablation and for hyperthermia applications.

Inventors

• 👤 Edwin Langberg

Bibliographic Details