| 摘要 |
PROBLEM TO BE SOLVED: To stably maintain incision capability of living tissues by injected liquid, by detecting presence of an air bubble entangled in a removable device.SOLUTION: In a state in which a liquid chamber is filled with liquid, by applying a voltage to a driving member, the liquid in the liquid chamber is pressurized for injection through an injection nozzle, so that a living tissue is incised. The way of deformation of the driving member changes according to presence of the air bubble entangled in the liquid chamber, and its effect appears in a current waveform that flows the drive member. By detecting the current that flows the drive member, presence of the entangled air bubble is detected. Thus, even if the incision capability is slightly degraded by the entangled air bubble, the situation is quickly understood, allowing stably keeping the incision capability at always. |
