Device for needle core withdrawing together with vacuum suction in one-handed performance for puncture biopsy

Abstract

The invention discloses a device for needle core withdrawing together with vacuum suction in one-handed performance for puncture biopsy, including a tube body, a hollow puncture needle, a flexible puncture needle core, a piston rod, a rubber piston sleeve, a piston driving rod and a gear component; a division plate divides the space in the tube body into a piston rod socket and a piston driving rod socket, the puncture needle is mounted on a needle connection tube, the piston rod includes piston rod teeth, the piston driving rod includes piston driving rod teeth, the piston rod is provided with a piston rod needle core socket, the rubber piston sleeve is provided with a rubber piston sleeve needle core socket, a tube body needle core socket and tube body needle core thread holes are arranged on the tube body, tube body needle-core clamping screws are arranged on the tube body needle-core thread holes, and a needle core guide pulley device is arranged on the piston rod. Therefore, lifting and thrusting of the puncture needle can be realized, and the puncture needle core withdrawing together with vacuum suction can be carried out at the same time.

Description

technical field [0001] The invention relates to a single-handed operation for extracting needle core and 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 lesi...

AI Technical Summary

Problems solved by technology

However, in actual work, it is very difficult to carry out external negative pressure suction during the puncture and insertion process of the puncture needle. Generally, during puncture, the operator holds the ultrasonic probe in his left hand for real-time monitoring, and the puncture needle in his right hand for tissue puncture and insertion. The operator cannot perform negative pressure suction while lifting and inserting the puncture needle

If the assistant holds the syringe to perform auxiliary negative pressure suction at the tail of the puncture needle, the cooperation between the two is a big problem, and it is difficult to achieve the coordination and consistency of the range of motion and frequency

Since the range of action to extract diseased cells is relatively small and precise, the risk of puncture will be greatly increased if the method of assistant-assisted negative pressure suction is adopted.

[0006] And the puncture needle is a hollow circular tubular structure, which can be equipped with a solid needle core. The solid needle core just fills the hollow part of the puncture needle. The function of the solid needle core is to prevent tissue debris and other non-target tissues from entering the puncture during the puncture process. In the hollow part of the needle, interference affects the diagnosis results. The previous puncture needles did not have the function of pulling out the solid needle core in combination with appropriate external negative pressure during the one-handed operation and insertion process.

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