A novel technique of lithotripsy using mid-infrared tunable pulsed laser

研究了一种新型的中红外可调谐脉冲激光差频碎石技术。结果发现，不同患者的胆囊结石主成分不同，本研究所用的胆囊结石样品可分为四组。这表明，通过将激光波长调谐到胆结石的强吸收峰，可以有效地消融胆结石。但是，激光功率的损失和光纤探头的弱点是一个问题。

A novel technique of lithotripsy was investigated with a mid-infrared tunable pulsed laser using difference-frequency generation (DFG). It was found that the principal components of the gallstones were different for the different patients and that the gallstone samples used in this research could be classified into four groups. This is suggested that the gallstones could be efficiently ablated by tuning the wavelength of the laser to the strong absorption peak of the gallstones. However, the loss of laser power and weakness of fiber probe were problems.