Negative-pressure biopsy sampler used for minimally invasive surgery for breast tumors

Abstract

The invention relates to the technical field of minimally invasive surgery equipment for breast tumors, and specifically discloses a negative-pressure biopsy sampler used for minimally invasive surgery for breast tumors. The negative-pressure biopsy sampler used for the minimally invasive surgery for the breast tumors comprises a sampling tube, a sampling blade, a rotating shaft, a screw, a nut, anut driving rod, a first spring, a connecting elbow, a negative pressure cylinder, a piston and a second spring; a sampling chamber is arranged at the lower end of the sampling tube; the rotating shaft is rotatably mounted on the sampling tube, and is coaxial with the sampling chamber; the sampling blade is located inside the sampling chamber; the nut cooperates with the screw; the nut driving rod is connected with the sampling tube in a vertically slidable way, and is fixedly connected with the nut; the first spring is arranged between the nut driving rod and the sampling tube; the samplingtube is fixedly connected with the negative pressure cylinder via the connecting elbow; the piston is mounted inside the negative pressure cylinder; and the second spring is arranged between the piston and the negative pressure cylinder. By using the negative-pressure biopsy sampler used for the minimally invasive surgery for the breast tumors disclosed by the invention, one-hand operation by medical staffs is realized; moreover, the sampling blade rotates inside the sampling tube, so that, no additional damage is caused on organs and tissues of patients.

Description

technical field [0001] The invention relates to the technical field of minimally invasive surgery equipment for breast tumors, in particular to a negative pressure biopsy sampler for minimally invasive surgery for breast tumors. Background technique [0002] Compared with traditional surgery, minimally invasive surgery has the advantages of small wound, less pain, faster recovery, shorter hospital stay, and less bleeding. It is currently widely used in the treatment of various diseases. Before and after the operation of breast tumors, biopsy samples are required as an important basis for pathological diagnosis. [0003] The invention patent with the application number of 201010214740.7 discloses a visceral biopsy needle, which includes a needle tube and an inner sleeve sleeved inside the needle tube. thread, the inner casing is also provided with a piston and a piston rod connected to the piston, and a through hole is arranged in the tube wall of the inner casing along the ...

AI Technical Summary

Problems solved by technology

This visceral layer biopsy needle has the following disadvantages: (1) when pulling the organ tissue, one hand grasps the needle tube, and the other hand pulls the hand piston rod to pull the organ tissue; Hold the needle tube, and turn the sampling knife control lever with the other hand. It can be seen that the medical personnel need both hands to operate the visceral biopsy needle, which is inconvenient to operate; The position of the crescent-shaped sampling knife can cover the port of the inner sleeve, which results in a larger coverage area when the crescent-shaped sampling knife rotates, which will cause additional damage to the patient's organs and tissues

Images