TITLE:
Measurement of Bubble Behavior and Impact on Solid Wall Induced by Fiber-Holmium:YAG Laser
AUTHORS:
Yasuhiro Sugimoto, Yoshiaki Yamanishi, Keiichi Sato, Manabu Moriyama
KEYWORDS:
Laser-Induced Cavitation Bubble, Bubble Collapse, Shock Waves, Transurethral Ureterolithotripsy
JOURNAL NAME:
Journal of Flow Control, Measurement & Visualization,
Vol.3 No.4,
October
7,
2015
ABSTRACT: The holmium:YAG (Ho:YAG) laser is effectively used for transurethral ureterolithotripsy. The laser is applied through an optical fiber in a ureter. A bubble is formed by a laser irradiated from the fiber tip and a calculus is crushed by the impact of the bubble collapse. In this study, we observed the characteristic behavior of a bubble induced by a Ho:YAG laser near a wall surface, using a high-speed video camera. Furthermore, we measured the forces of a bubble collapse using an impulsive force sensor. As a result, we showed characteristic bubble collapse behavior and impulsive force distribution for various fiber placement conditions.