Negative pressure suction device used for needle biopsy

Abstract

The present invention discloses a negative pressure suction device used for needle biopsy. The negative pressure suction device used for the needle biopsy comprises a tube body, a hollow puncture needle head, a puncture needle core, a piston rod, a rubber piston sleeve, a piston driving rod and a gear member, a partition plate is arranged in the tube body, the puncture needle head is arranged on aneedle head connection tube, the piston driving rod is insertedly arranged in a piston driving rod insert hole, the piston rod is insertedly arranged in a piston rod insert hole, the rubber piston sleeve sleeves a front end of the piston rod, the gear member is rotatably arranged in the tube body, the piston rod comprises piston rod teeth, the piston driving rod comprises piston driving rod teeth, the piston rod is provided with a piston rod needle core insert hole, the rubber piston sleeve is provided with a rubber piston sleeve needle core insert hole, a side part of the tube body is provided with a puncture needle core positioning member, the puncture needle core positioning member is provided with a puncture needle core positioning insert hole, the puncture needle core positioning insert hole is provided with a puncture needle core positioning insert rod, the puncture needle core positioning insert rod is provided with a puncture needle core driving head, and an upper end of the puncture needle core is fixed on the puncture needle core driving head, so that pulling out of the puncture needle core is smooth and labor-saving.

Description

technical field [0001] The invention relates to a negative pressure suction device for puncture biopsy. Background technique [0002] With the continuous development of the medical level, ultrasound-guided fine-needle aspiration cytology biopsy has been more and more used in daily medical treatment in recent years. The puncture needle is an indispensable tool. This method is applied under ultrasonic monitoring. The target cells of superficial organ tissues are obtained through the puncture needle for pathological diagnosis, such as breast, thyroid, lymph nodes, etc. It is the best method for early diagnosis of benign and malignant targets. The quick, easy and safe way. [0003] Compared with the previous histological biopsy, it has the advantages of less damage, less risk, and equally reliable results. However, with the development of clinical work, a new problem has emerged. The specific tissue composition of the lesion determines its physical properties, which may be sof...

AI Technical Summary

Problems solved by technology

[0008] The most important thing is that one end of the puncture needle core is bent and fixed on the tube body. During the process of pulling out the puncture needle core, the puncture needle core is always in a bent state, which leads to the unsmooth pulling out of the puncture needle core and damages the needle core. The material requirements are relatively high

Images