Breast tissue puncture biopsy needle

Abstract

The invention provides a breast tissue puncture biopsy needle which comprises a needle file, a needle guard with the rear end fixed on the needle file and a biopsy needle body sleeved with the needle guard. The biopsy needle body comprises a needle tubing and a pull rod with the front end located in the needle tubing and the rear end extending out of the needle tubing, the pull rod and the needle tubing are kept hermetical, a plurality of cutting edges are circumferentially distributed in the front end of the needle tubing, a plurality of suction channels located between two neighboring cutting edges and communicated with the needle tubing are formed circumferentially in the front end of the needle tubing, and the front end of the needle tubing can be accommodated in the needle guard; the biopsy needle body further comprises a transmission part arranged on the needle file and used for driving the needle tubing to rotate and a driving unit used for driving the transmission part to rotate, the rear end of the needle tubing extends out of the needle guard and penetrates the transmission part, and the needle tubing can slide on the transmission part axially. By the arrangement, the amount of living tissue can be extracted as required by one puncture, patient's pain is alleviated, and working load of doctors is reduced.

Description

technical field [0001] The invention relates to a breast tissue puncture biopsy needle, which belongs to the technical field of medical instruments. Background technique [0002] In recent years, the incidence of breast diseases, especially breast cancer, has been increasing year by year, seriously endangering women's health. Tissue biopsy is a key method to distinguish benign and malignant breast diseases, and has been widely used in clinical practice. Existing puncture biopsy needles include a needle base, a puncture needle cover arranged on the needle base, and a biopsy needle sheathed in the puncture needle cover. During the rapid retraction, the notch cuts off the living tissue and stores it in the space formed by the notch and the puncture needle cover. The existing problem is: because the length of the notch can not be too long, the depth can not be too deep, resulting in less living tissue cut each time the notch, generally need to go through 4 to 5 times of repeat...

AI Technical Summary

Problems solved by technology

The existing problem is: because the length of the notch can not be too long, the depth can not be too deep, resulting in less living tissue cut each time the notch, generally need to go through 4 to 5 times of repeated puncture to extract biopsy tissue. Extract the demand for biopsy, which not only increases the pain of the patient, but also increases the workload of the doctor

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