Title :
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
fDate :
30 Oct-2 Nov 1997
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;
Conference_Titel :
Engineering in Medicine and Biology Society, 1997. Proceedings of the 19th Annual International Conference of the IEEE
Conference_Location :
Chicago, IL
Print_ISBN :
0-7803-4262-3
DOI :
10.1109/IEMBS.1997.756844
