A scalpel that utilizes the action of laser light. Continuous-wave laser light from a CO2 laser, argon laser, YAG laser, or other laser with several tens of watts is guided to the surgical field through a metal pipe or optical fiber, and the light is irradiated onto tissue. The tissue is incised, and at the same time, the blood vessels in the tissue coagulate due to heat, and bleeding stops. This allows so-called bloodless surgery to be performed. Laser scalpels for bloodless surgery are being put into practical use in surgery. There are also attempts to stop bleeding from the stomach by irradiating the bleeding area with a laser light through a gastrofiberscope, to blow away bruises on the skin by momentarily irradiating them with pulsed laser light such as a ruby laser, and to use laser light on cavities to dissolve and repair the area. Source: Encyclopaedia Britannica Concise Encyclopedia About Encyclopaedia Britannica Concise Encyclopedia Information |
レーザー光線の作用を利用したメス。数十Wの CO2 レーザー,アルゴンレーザー,YAGレーザーなどの連続波レーザー光を金属パイプや光ファイバなどを通して手術野に導いて,組織に光照射を行うと,組織が切開されると同時に組織の血管は熱のために凝固して,出血が止る。そのため,いわゆる無血手術を行うことができる。こうした無血手術を目的とするレーザーメスは外科手術に実用化されつつある。胃から出血しているときに,胃ファイバースコープを通じて出血部にレーザー光を当てて止血したり,皮膚のあざにルビーレーザーなどのパルスレーザー光を瞬間的に照射してこれを吹飛ばしたり,虫歯にレーザー光を当ててそこを溶解してなおしたりする試みもある。
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