Title :
Temperature elevation in tissue during ultrasonic dissection
Author :
Koch, C. ; Friedrich, T. ; Metternich, F. ; Tannapfel, A. ; Reimann, H.-P. ; Eichfeld, U.
Author_Institution :
Phys. Tech. Bundesanstalt, Braunschweig, Germany
Abstract :
The temperature increase during the use of an ultrasonic surgery device was experimentally determined in vitro and in vivo with the aid of thermocouples of specific design. Temperature elevations by more than 40°C were found at 1 mm distance from the blade, whereas at distances of more than 5 mm, perfusion removed the heat very efficiently. It is concluded that during application of the harmonic scalpel a safety margin of 3 mm from sensitive structures should be kept.
Keywords :
biomedical equipment; biomedical ultrasonics; biothermics; haemorheology; radiation therapy; surgery; thermocouples; 1 mm; 3 mm; 5 mm; efficient heat removal; perfusion; safety margin; sensitive structures; temperature elevation in tissue; temperature increase; ultrasonic dissection; ultrasonic surgery device; Animals; Blades; Hemorrhaging; In vitro; In vivo; Lungs; Safety; Surgery; Temperature measurement; Temperature sensors;
Conference_Titel :
Ultrasonics Symposium, 2002. Proceedings. 2002 IEEE
Print_ISBN :
0-7803-7582-3
DOI :
10.1109/ULTSYM.2002.1192574
