The medical instrument and the method of being related to that are disclosed. In the execution form of part, the medical instrument has the cavity which makes the wall thickness decrease in the wall, and the wall public aspect which have the inside and the outside which demarcate the wall thickness between (220) the expansion possible balloon which it possesses (200) with, the nano- material which is arranged inside the aforementioned cavity (230) with.医療器具およびそれに関連する方法が開示される。一部の実施形態において、医療器具は、間に壁厚を画定する内面および外面を備えた壁部、および壁部外面において壁厚を減少させた空洞(220)を有する膨張可能なバルーン(200)と、前記空洞内に配置されたナノ材料(230)とを備える。