Fixing structure of ultrasonic puncture needle and ultrasonic puncture needle

Abstract

The invention discloses a fixed structure of an ultrasonic puncture needle and the ultrasonic puncture needle. The ultrasonic puncture needle comprises a housing, a sliding core, a needle guard and a needle core; a first sliding groove is formed in the inner cavity of the housing; the sliding core is slidingly arranged in the first sliding groove of the housing; an end portion of the sliding core extends out of the housing; a second sliding groove is formed in the sliding core in the axial direction thereof; the needle guard is nested in the second sliding groove; one end of the needle guard is detachably connected with the sliding starting end of the second sliding groove, while the other end of the needle guard extends out of the second sliding groove; the needle guard and the sliding core slide synchronously along the first sliding groove; the needle core is slidingly nested in the needle guard; one end of the needle core is detachably connected with one end of the inner cavity of the housing, while the other end of the needle core extends out of the needle guard. The ultrasonic puncture needle is simple in structure and convenient to use and can be reused a plurality of times. Meanwhile, as, every time after use, only the needle core and the needle guard need to be replaced and other components do not need to be replaced, the production cost and the use cost are reduced and the burden of a patient is reduced.

Description

technical field [0001] The invention relates to a fixing structure of an ultrasonic puncture needle and the ultrasonic puncture needle, which are especially suitable for fine-needle tissue biopsy through the ultrasonic endoscope of the digestive tract and trachea and biopsy through the bronchoscope, and belong to the technical field of medical devices. Background technique [0002] Endoscopic puncture technology is a minimally invasive diagnosis and treatment technology completed through endoscopic working channels. Although it belongs to advanced endoscopic technology, it has been developed maturely all over the world in the past 30 years. The technology is to obtain diagnostic specimens of cells, tissues, and fluids through puncture, and can also perform puncture and aspiration therapy, and can also achieve the purpose of injection therapy. The endoscopes currently used for puncture generally include ultrasonic endoscope and non-ultrasonic endoscope (i.e. ordinary endoscop...

AI Technical Summary

Problems solved by technology

Because the existing puncture needles for ultrasound are disposable, they cannot be reused, and the production cost of the current puncture needles for ultrasound is high, which causes a greater economic burden on patients

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