Device for performing puncture biopsy under laser guide

The invention belongs to the technical field of medical devices and particularly relates to a device for performing puncture biopsy under laser guide. The device comprises a propelling device and a puncture biopsy device, wherein the puncture biopsy device is fixedly connected to the propelling device; the puncture biopsy device comprises a puncture needle sheath and a sampler, a sampling hole isformed in the front end of the puncture needle sheath, a cutting disc is arranged at the orifice of the sampling hole, a laser sensor and a prompter are arranged at the rear end of the sampler, and the central line of the laser sensor is colinear with the axis of a conical needle head. By means of the propelling device and the puncture biopsy device, the propelling device is used for pushing the puncture biopsy device to move forward to reach the pathological tissue position, the puncture biopsy device is used for cutting down a small piece of pathological tissue and taking out the pathological tissue to be used for f