Title :
Temperature controlled electrosurgical vessel sealing
Author :
Magnusen, Todd A. ; Pearce, John A.
Author_Institution :
Biomed. Eng. Program, Texas Univ., Austin, TX, USA
Abstract :
Electrosurgical sealing of large canine vessels (3-5 mm) can be feedback controlled by thermocouple-measured temperatures at the surface of the vessel. The duty cycle of a 500 kHz constant voltage source is regulated by means similar to pulsed width modulation, temperatures in different tissues were repeatable. Also, histologic analysis reveals thermal damage in the tissue and sealing in the intimal layer
Keywords :
biocontrol; bioelectric phenomena; biothermics; surgery; 500 kHz; blood vessels; constant voltage source; duty cycle; feedback control; histologic analysis; intimal layer; pulsed width modulation; temperature controlled electrosurgical vessel sealing; thermal damage; thermocouple-measured temperatures; tissues; Arteries; Biomedical engineering; Blood vessels; Electrodes; Optical polarization; Pulse width modulation; Seals; Temperature control; Veins; Voltage;
Conference_Titel :
Engineering in Medicine and Biology Society, 1994. Engineering Advances: New Opportunities for Biomedical Engineers. Proceedings of the 16th Annual International Conference of the IEEE
Conference_Location :
Baltimore, MD
Print_ISBN :
0-7803-2050-6
DOI :
10.1109/IEMBS.1994.415219
