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Visual Pressure Regulating Catheter Patent - Qingdao Biotech Medical

USPTO granted Patent US12605161B2 to QINGDAO BIOTECH MEDICAL CO., LTD on April 21, 2026, covering a visual pressure regulating catheter with integrated hydraulic dilation balloon, pressure regulating handle, endoscope pressure regulating cavity, and dilation liquid perfusion cavity. The invention enables direct endoscopic observation through the catheter into the dilation balloon. The patent contains 13 claims and lists CPC classifications spanning A61B, A61M, and related medical device categories.