美国伊利诺斯州的一个医学研究小组,第一次不动外科手术而成功地消除了肾结石。该医学研究小组用的是两件新工具:一件是光纤维探头;一件是微型碎石器。光纤维探头由数千根中空的、比头发还细的玻璃纤维组成。光线从光纤维的一端进入后,几乎可以无损耗地传递到另一端。光纤维探头中一部分纤维就是作传递光线提供照明之用。其余的光 A medical research group in Illinois, USA, successfully eliminated kidney stones for the first time without surgery. The medical team used two new tools: one for optical fiber probes and one for microlithographs. Fiber optic probes consist of thousands of hollow, glass fibers thinner than the hair. After the light enters from one end of the optical fiber, it can be transmitted to the other end almost without any loss. Part of the fiber optic probe fiber is used to provide light for lighting purposes. The rest of the light