Clamping catheter, interventional needle fixing device and puncture method

The invention belongs to the technical field of medical instruments, and particularly discloses a clamping catheter, an interventional needle fixing device and a puncture method, and the clamping catheter comprises a clamping assembly, an infrared laser assembly, an image acquisition device and an image processing module. The clamping assembly is used for clamping the interventional needle. The infrared laser assembly is used for emitting laser rays to aim at a puncture point and displaying an irradiation path to simulate a needle feeding path of an interventional needle. The image acquisition device is used for acquiring image information of a puncture point and image information of an irradiation path, and the puncture point is a light spot position where the laser light is irradiated to the body surface of a patient. The image processing module is used for determining the puncture angle of the interventional needle. The interventional needle fixing device comprises a mounting frame, and the clamping cathet