One-hand-operated negative pressure suction device for fine needle aspiration biopsy

Abstract

The invention provides a one-hand-operated negative pressure suction device for fine needle aspiration biopsy. The device comprises a pipe body, a puncture needle, a piston rod, a rubber piston sleeve, a piston driving rod and a gear component, wherein the front end of the pipe body is sealed, the rear end of the pipe body is opened, a clapboard is arranged in the pipe body, the inner space of thepipe body is divided into a piston rod hole and a piston driving rod hole through the clapboard, a needle connecting pipe is arranged at the front end of the pipe body, the puncture needle is mountedon the needle connecting pipe, the piston rod is inserted in the piston rod hole, the rubber piston sleeve sleeves the front end of the piston rod, the piston driving rod is inserted in the piston driving rod hole, the gear component is rotationally mounted on the pipe body above the clapboard, piston rod teeth are arranged on the piston rod, piston driving rod teeth are arranged on the piston driving rod, the gear component is positioned between the piston rod teeth and the piston driving rod teeth, and the piston rod teeth and the piston driving rod teeth are meshed with the gear component.Therefore, superficial tissue and organ cells can be extracted by one hand, and an operator can carry out negative pressure suction while simultaneously lifting or inserting the puncture needle.

Description

technical field [0001] The invention relates to a negative pressure suction device for extracting superficial tissue and organ cells for fine-needle aspiration biopsy with single-handed control operation. 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 emerge...

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.

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