今年1月25日,在东京大学医用电子研究所的讨论会上,Masao Saito博士展出了一种新开发的能防止激光刀误方向或误调节事故发生的安全装置,三菱电子公司的中心研究实验室也参与了这一开发工作。这种安全装置用一个微分辐照探测器测量激光刀尖与手术部位之间的距离,探测器能限定激光在这段距离内辐照。这种安全装置的原理框图和手柄结构分别见图1和图2。在手柄的外围分别包着两 On January 25 this year, at a seminar at the University of Tokyo Institute of Medical Electronics, Dr. Masao Saito presented a newly developed safety device that prevents mis-orientation of laser blades or accidental mishandling. Mitsubishi Electric Corp.’s Center for Research Room also involved in this development. This safety device uses a differential radiation detector to measure the distance between the laser tip and the surgical site, and the detector can limit the laser radiation over this distance. The schematic diagram of the safety device and the handle structure are shown in FIG. 1 and FIG. 2, respectively. In the periphery of the handle were wrapped two