(EN) Catheter, that stops/blocks the blood flow and is used in combination with thermography catheters, -catheters for recording wall temperatures in vessel (arteries - veins)-, comprising two lumens (2,3), one for the introduction of the thermography catheter and one for the controlled inflation of the balloon (8), two exits (4,5), one with a clasp (6) for stabilizing the thermography catheter and one for controlling the means of controlled inflation of the balloon, and a balloon. With the controlled inflation of the balloon, blocking of the blood flow is achieved and consequently, accurate measurement and recording of the vessel wall temperature can be carried out.