Title :
Laser ultrasound surgical therapy (LUST)
Author :
Tschepe, J. ; Desinger, K. ; Müller, G. ; Stein, T.
Author_Institution :
Laser- und Medizin-Technol. gGmbH, Berlin, Germany
Abstract :
The aim of this project is the development of a new endoscopic applicator that would enable surgeons to use laser and ultrasound techniques simultaneously. The concept of the applicator is based on the transmission of laser radiation and ultrasound power via flexible silica glass fibers. Flexible acoustic waveguides are not yet available commercially. Experimental studies have shown the possibility of transmission of acoustical transients via optical silica glass fibers. Theoretical and experimental results on the feasibility of such a fiber for an ultrasonic power delivery system are presented. The system transmits via an 1.5 m long optical fiber (outside diameter: 1 mm) up to 100 watts Nd:YAG laser radiation. The axial oscillation of the fiber tip (elongation) is ±70 pm at a frequency of 22 kHz
Keywords :
acoustic waveguides; biomedical ultrasonics; laser applications in medicine; optical fibres; radiation therapy; surgery; ultrasonic transmission; 1 mm; 1.5 m; 100 W; 22 kHz; LUST; Nd:YAG laser radiation; SiO2; YAG:Nd; YAl5O12:Nd; acoustical transients; applicator; axial oscillation; elongation; endoscopic applicator; fiber tip; flexible silica glass fibers; laser radiation; laser ultrasound surgical therapy; optical silica glass fibers; surgery; ultrasonic power delivery system; ultrasound power; Applicators; Fiber lasers; Glass; Laser surgery; Laser theory; Medical treatment; Optical waveguides; Silicon compounds; Ultrasonic imaging; Waveguide lasers;
Conference_Titel :
Ultrasonics Symposium, 1995. Proceedings., 1995 IEEE
Conference_Location :
Seattle, WA
Print_ISBN :
0-7803-2940-6
DOI :
10.1109/ULTSYM.1995.495857
