Abstract
Paper reports the irradiation of pulsed Holomium YAG (Ho:YAG) laser beams in water which were transmitted through optical fiber made of quartz and the resulting generation of vapor bubbles in a capillary tube which then induced a jet ejecting from the exit. When the capillary tube was positioned against a gelatin layer which was an artificial model of cerebral thrombi, resulting jet penetrating the gelatin layer exhibited an effective way of revascularization of cerebral thrombosis. Time-resolved optical flow visualization clearly revealed the process of jet formation and resulting penetration. The relationship between laser energy and jet penetration was clarified. In the present study we have optimized the stand-off distance between the tip of fiber and the exit of the capillary tube in order to achieve.
