Visual pressure regulating catheter

A visual pressure regulating catheter, comprising:

• a catheter body, and a hydraulic dilation balloon and a pressure regulating handle both of which are disposed on the catheter body, an endoscope pressure regulating cavity and a dilation liquid perfusion cavity are formed in the catheter body along an extension direction thereof, the dilation liquid perfusion cavity is communicated with the hydraulic dilation balloon, and the pressure regulating handle is provided with a perfusion port which is communicated with the dilation fluid perfusion cavity and a pressure regulating port which is communicated with the endoscope pressure regulating cavity;
• an observation channel is opened at a position on the endoscope pressure regulating cavity within the hydraulic dilation balloon, a camera at a front end of an endoscope sequentially passed through the pressure regulating port, the endoscope pressure regulating cavity and the observation channel and extending into the hydraulic dilation balloon;
• and
• an operating rod at a tail end of the endoscope is slidably and sealingly connected to the pressure regulating port and configured to regulate the pressure in the hydraulic dilation balloon when slid axially.