Catheter apparatus with a sensor

With a information detector's catheter instrument, comprising a control reliably of the laser are of treating result, to solidification and necrosis degree of laser therapeutic. Comprising: Capable of inserting the cavity body is provided with hard sleeve. Opening of the sleeve the window is end, capable of movably and emigrate the window detector, and a close to the detector and is the embossment vesicle the vesicle device. The vesicle device installed in the sleeve, wherein vesicle an embossment, comprising towards the direction bias of the window sleeps poorly to the cavity body wall is. Water, and side action of pressure of vesicle, a detector deglycosylation preventing from the window and formed with a cavity body wall of the pressure contact.