Negative-pressure thoracocentesis remaining needle

Abstract

The invention discloses a negative-pressure thoracocentesis remaining needle. The negative-pressure thoracocentesis remaining needle comprises a remaining catheter, a puncture needle and a negative-pressure device, wherein a mounting hole is formed in the remaining catheter, the puncture needle is movably connected to inside of the mounting hole, and a check valve I is connected with the right endof the puncture needle; the negative-pressure device is of a hollow structure, a fixed plate, a screw and a piston are arranged in an inner cavity, the fixed plate is vertically fixed on the left side of the inner cavity, the left end of the screw is rotationally connected with the middle of the fixed plate, the outer wall of the piston is in attached connection with the inner wall of the negative-pressure device, a nut is fixed in the middle of the piston and is in threaded connection with the screw, limiting blocks are arranged at two ends of the piston, and limiting grooves are symmetrically formed in the inner wall of the negative-pressure device; and a cover plate is in inlaid connection with the right end of the negative-pressure device, a motor is mounted on the cover plate, and aninlaid sleeve is connected to a power output end of the motor. The small negative-pressure device is connected to the tail end of the puncture needle, and the negative-pressure device has a small size, is convenient to operate and can play a quite good assisting effect on thoracocentesis.

Description

technical field [0001] The invention relates to the technical field of medical equipment, in particular to a negative pressure thoracentesis indwelling needle. Background technique [0002] Thoracentesis refers to the operation of entering the pleural cavity with a sterile needle through the skin, intercostal tissue, and parietal pleura. In the clinical work of the pulmonary department, thoracentesis is a relatively common, convenient and simple method of diagnosis and treatment. If through the examination, it is found that there is fluid in the patient's pleural cavity, the fluid can be extracted through thoracentesis, and various examinations can be performed to find the cause of the disease. [0003] At present, when thoracentesis is performed, the indwelling needle is used to puncture first, and then the extraction device is activated to extract the effusion. During the process, the puncture is often too deep, resulting in puncture of the visceral pleura and alveoli, re...

AI Technical Summary

Problems solved by technology

[0003] At present, when performing thoracentesis, the indwelling needle is used to puncture first, and then the extraction device is activated to extract the effusion. During the process, the puncture is often too deep, resulting in puncture of the visceral pleura and alveoli, resulting in pneumothorax complications

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