Micro-deformation monitoring and early warning device for preventing extravasation of contrast agent

The utility model relates to a micro-deformation monitoring and early warning device for preventing extravasation of a contrast agent, and belongs to the technical field of medical instruments. Comprising a micro-deformation monitoring device and a control device, the high-pressure injector injects a contrast agent through the injection needle, and the micro-deformation monitoring device is connected with the high-pressure injector through the control device; the micro-deformation monitoring device comprises a laser scanning sensor; the laser scanning sensor scans the surface skin at the injection site of the injection needle in real time and monitors the micro-deformation of the skin surface. The device is simple in structure, convenient to use and easy to accept. The laser scanning sensor monitors the contrast agent injection process in real time, senses skin deformation through the laser scanning injection position, prompts whether the contrast agent leaks or not in time, gives an early warning in time, an