10 January 1996 Comparative investigation of pyrolysis products due to laser and rf surgery with regard to the latest device development
Author Affiliations +
Abstract
Cutting and vaporization of biological tissue, performing surgical procedures are always connected with the generation of pyrolysis products due to heat increase caused by laser radiation, direct thermal heating or radiofrequency- (RF-) current application. This paper presents quantitative and qualitative results on the produced pyrolysis products considering latest device developments. Volatile organic compounds were adsorbed using a multisorbent sampler and evaluated with a gas chromatography system coupled with a FTIR spectrometer. The calibration of the system together with geometrical considerations of the adsorption allows for a quantitative determination of some toxicological relevant substances. For a quantitative statement, a standardized application of optical and electrical energy is requested. Therefore, in vitro investigations were performed Nd:YAG laser radiation and radiofrequency current in monopolar and bipolar technique were used for simulation of cutting in open surgery. We used a 600 micrometers bare fiber, a monopolar and a bipolar needle electrode with similar geometric shape for tissue incisions. The depth and speed of cutting was standardized for all experiments. The cutting parameters for laser and RF application were chosen in such a way that the quality and the depth of the coagulation zone are comparable for all applications.
© (1996) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Kai Desinger, Wolfgang Waesche, Hansjoerg Albrecht, "Comparative investigation of pyrolysis products due to laser and rf surgery with regard to the latest device development", Proc. SPIE 2624, Laser-Tissue Interaction and Tissue Optics, (10 January 1996); doi: 10.1117/12.229561; https://doi.org/10.1117/12.229561
PROCEEDINGS
6 PAGES


SHARE
Back to Top