Author(s)

Yasuhiro Sugimoto¹, Yoshiaki Yamanishi¹, Keiichi Sato¹, Manabu Moriyama²

¹Department of Mechanical Engineering, Kanazawa Institute of Technology, Ishikawa, Japan.
²Himi Municipal Hospital, Kanazawa Medical University, Toyama, Japan.

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.

Laser-Induced Cavitation Bubble, Bubble Collapse, Shock Waves, Transurethral Ureterolithotripsy

Sugimoto, Y. , Yamanishi, Y. , Sato, K. and Moriyama, M. (2015) Measurement of Bubble Behavior and Impact on Solid Wall Induced by Fiber-Holmium:YAG Laser. Journal of Flow Control, Measurement & Visualization, 3, 135-143. doi: 10.4236/jfcmv.2015.34013.