Bipolar electrosurgery with long electrodes for RF coagulation of atrial tissue

Author

Berjano, E.J. ; Hornero, F. ; Oria, Carlos ; Montero, Anastasio

Author_Institution

Lab. Integrado de Bioeng., Valencia Univ., Spain

Volume

6

fYear

1997

fDate

30 Oct-2 Nov 1997

Firstpage

2528

Abstract

We performed experiments on porcine atrial tissue fragments with a custom-built bipolar electrosurgical forceps fitted with long electrodes (20 mm) in order to create long and transmural lesions. Results show that impedance monitoring during heating and visual supervision of the lesion zone, are optimum parameters to control lesion evolution and avoid overheating in the tissue. Transmural lesions without charring were created with 15 watts of power during 10-15 seconds on initial impedances between 50-90 ohm

Keywords

bioelectric phenomena; biological tissues; biomedical electrodes; cardiovascular system; coagulation; surgery; 10 to 15 sec; 15 W; 50 to 90 ohm; RF coagulation; atrial fibrillation; atrial tissue; bipolar electrosurgery; electrosurgical forceps; impedance monitoring during heating; lesion evolution control; long electrodes; long lesions; optimum parameters; porcine tissue; surgical maze; transmural lesions; visual supervision; Catheters; Coagulation; Electrodes; Heart; Laboratories; Lesions; Radio frequency; Surface impedance; Surgery; Temperature control;

fLanguage

English

Publisher

ieee

Conference_Titel

Engineering in Medicine and Biology Society, 1997. Proceedings of the 19th Annual International Conference of the IEEE

Conference_Location

Chicago, IL

ISSN

1094-687X

Print_ISBN

0-7803-4262-3

Type

conf

DOI

10.1109/IEMBS.1997.756844

Filename

756844