C322 レーザー誘起液体ジェットに伴う衝撃波の医療応用

概要

論文の詳細を見る
Holmium (Ho) : YAG laser is solid-state laser which has wavelength near light-absorption peak to water. Recently, we've found that this laser irradiation within a capillary filled with water induced liquid-jet formation, named this technology 'Ho : YAG laser-induced liquid jet', and applied it on some medical devices such as a catheter for thrombolysis and a surgical knife. In our investigation, it was also found that strong shock wave was caused by rebound phenomenon of jet-induced cavitation bubbles. In this study, we measured the overpressure of shock wave induced by the Ho : YAG laser-induced liquid jet catheter with PVDF needle hydrophon and performed the experiment to crack the artificial calcified lesions with this catheter. The artificial calcified lesion was easily cracked with shock waves exceeding 12MPa. In conclusion, it is possible that our liquid jet technology is applied to treatment of hard lesions such as arterial sclerosis and urinary-tract lithiasis.
日本流体力学会の論文
2002-07-23