| 摘要 |
A catheter apparatus has an information detecting sensor which is capable of positively controlling the treatment effect in the position where laser light is irradiated such as solidification or necrosis in the laser light treatment. The catheter apparatus comprises a sheath having a rigidity which is to be inserted into said body cavity; a window which is opened at the front end portion of the sheath; a sensor which is movable in or out through said window, and a balloon means having an inflatable balloon which is adjacent to the sensor. The balloon means is secured to said sheath and is biassed on the wall of said body cavity in a direction opposite to the side of said window when said balloon is inflated. The sensor is projected through the window and is brought into pressure contact with said wall by the reaction force of the balloon. <MATH> |
