Spiraled-helix antenna for catheter ablation of myocardial tissue using microwave energy

Author

Mirotznik, Mark S. ; Bogen, Daniel ; Foster, Kenneth

Author_Institution

Dept. of Bioeng., Pennysylvania Univ., Philadelphia, PA, USA

fYear

1990

fDate

26-27 Mar 1990

Firstpage

127

Lastpage

128

Abstract

The design and characterization of an antenna for catheter ablation using microwave energy are described. The goal is to allow controllable destruction of endocardial tissue containing abnormal conduction pathways. The antenna is based on a helical coil antenna. The antenna is constructed from a length of coaxial transmission line in which the center conductor is extended and wound in a spiral of approximately 1 cm diameter, so the antenna contacts the tissue in a disk-shaped pattern about 1 cm across. The heating occurs in the near field of the antenna, producing a shallow, disk-shaped region of ablated tissue. Preliminary results show that this antenna design is suitable for producing broad, shallow lesions in tissue

Keywords

biomedical equipment; cardiology; microwave antennas; muscle; radiation therapy; radiofrequency heating; surgery; ablated tissue; abnormal conduction pathways; broad shallow lesions; catheter ablation; center conductor; coaxial transmission line; controllable destruction; design; disk-shaped pattern; endocardial tissue; heating; helical coil antenna; microwave energy; myocardial tissue; shallow disk shaped region; spiraled helix antenna; Catheters; Coaxial components; Coils; Conductors; Electromagnetic heating; Helical antennas; Microwave antennas; Myocardium; Transmission line antennas; Wounds;

fLanguage

English

Publisher

ieee

Conference_Titel

Bioengineering Conference, 1990., Proceedings of the 1990 Sixteenth Annual Northeast

Conference_Location

State College, PA

Type

conf

DOI

10.1109/NEBC.1990.66317

Filename

66317