A needle aspiration cytology biopsy puncture device specially used for thyroid gland

Abstract

The invention discloses a needle aspiration cytology biopsy puncture device special for a thyroid gland. The needle aspiration cytology biopsy puncture device comprises an aspirator and a puncture needle, wherein the puncture needle is installed at one end of the aspirator and comprises a hollow needle body and a needle base, the needle body is fixed to the needle base, the length of the needle body ranges from 4 cm to 5 cm, the outer diameter of the needle body ranges from 0.5 mm to 0.6 mm, the wall thickness of the needle body ranges from 0.2 mm to 0.3 mm, one end of the needle body is an inclined face, the included angle of the inclined face ranges from 10 degrees to 15 degrees, the length of the inclined face ranges from 3 mm to 4 mm, and a fixing ring is arranged on the needle body; the aspirator comprises an aspiration cylinder, a push rod and a push rod fixing assembly for preventing the push rod from sliding, the push rod is arranged in the aspiration cylinder and closely matched with the aspiration cylinder, the push rod fixing assembly is arranged on the aspirator, and the needle base is arranged at one end of the aspiration cylinder in a sleeving mode. The needle aspiration cytology biopsy puncture device is simple in structure, convenient to operate, safe, high in sampling success rate, low in price, suitable for industrial production and beneficial to clinical application and popularization.

Description

technical field [0001] The invention relates to a needle aspiration cytology biopsy puncture device, in particular to a needle aspiration cytology biopsy puncture device specially used for thyroid gland, belonging to the field of medical equipment. Background technique [0002] The thyroid gland is the largest endocrine gland in the human body. It mainly secretes thyroxine and calcitonin, promotes material and energy metabolism, and promotes growth and development. Its physiological functions are very important. In the past 10 years, the incidence of thyroid cancer has increased by about 4.6 times. At present, the average incidence of thyroid cancer in China is 7.7 / 100,000, and it has become one of the malignant tumors with a rapidly increasing incidence. Epidemiological studies have found that thyroid nodules can be detected in 19-67% of randomly selected populations if high-resolution ultrasound is used. Nodules can be neoplastic or non-neoplastic. There are benign and m...

AI Technical Summary

Problems solved by technology

Most of these puncture needles are composed of a cannula and a needle core. The outer diameter of the cannula is relatively thick, all of which are above 0.7mm. Although many tissues are pierced during use, most of them are interstitium, and it is not easy to separate the required cells, resulting in false positives. The needle tube wall is too thin and the needle tip is not sharp enough. When it reaches the calcified area or deep hard tissue, it is difficult to penetrate or even break. The puncture needle has no fixed coil. When the display is not clear, it is easy to penetrate into the non-target area, the material obtained is inaccurate, and the surrounding tissues and organs are damaged; at the same time, due to the thick outer diameter of the needle tube, the cut surface is too large, and it is easy to cause complications such as bleeding, infection, and needle transfer.

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