Title :
Microwave ablation for tachycardia
Author :
Lin, James C. ; Beckman, Karen J. ; Hariman, Robert J.
Author_Institution :
Illinois Univ., Chicago, IL, USA
Abstract :
Application of microwave energy delivered through a probe and a catheter in open- and closed-chest dogs to induce atrio-ventricular block is described. Several microwave antennas/catheters with a preferential power deposition at the tip were designed, constructed and tested. These antennas were designed for operation at 2450 MHz. Measurements in saline and tissue-equivalent liquid phantoms showed greatly increased heating at the tips of these antennas. The antenna consisted of flexible coaxial cables (1.78 mm OD) with a thin, semigrid brass sleeve just proximal to the tip. The entire antenna was insulated except for the tip and could be used for recording bipolar electrograms
Keywords :
biological effects of microwaves; cardiology; surgery; 2450 MHz; atrio-ventricular block; bipolar electrograms; catheter; closed-chest dogs; flexible coaxial cables; heating; microwave ablation; microwave antennas/catheters; microwave energy; open chest dogs; preferential power deposition; probe; saline; tachycardia; thin semigrid brass sleeve; tissue-equivalent liquid phantoms; Antenna measurements; Catheters; Coaxial cables; Dogs; Electromagnetic heating; Imaging phantoms; Insulation; Microwave antennas; Probes; Testing;
Conference_Titel :
Engineering in Medicine and Biology Society, 1989. Images of the Twenty-First Century., Proceedings of the Annual International Conference of the IEEE Engineering in
Conference_Location :
Seattle, WA
DOI :
10.1109/IEMBS.1989.96127
