Self-destruction insulin syringe capable of replacing needle

Abstract

The invention relates to a self-destruction insulin syringe capable of replacing needles, comprising a needle cylinder, a push rod, a rubber plug and a needle stand. The needle cylinder is provided with the linkage needle stand which is supported and fixed at the front end of the needle cylinder by a support seat, and the needle stand extends downwards to form a fixing ring. A snap ring is formed on the upper end of the linkage needle stand and extends into the inner hole of the fixing ring to be blocked and fixed with the fixing ring, and the wall of the inner hole of the linkage needle stand is provided with a big groove. The upper end of the support seat extends into the inner hole of the linkage needle stand, a first elastic pawl gathering together to the center is formed on the upper end of the support seat, the outer side of the upper end of the support seat is provided with a circle of boss, and the boss is located in the big groove and can slide vertically along the big groove. A first elastic support claw is formed at the lower end of the linkage needle stand, and correspondingly, the inner wall of the needle cylinder is provided with a small groove in which the first elastic support claw can be embedded. The outer side of the lower end of the support seat is provided with a circle of convex circular bead which abuts against the first elastic support claw. By adopting the syringe with the structure, because the needle stand and the needle cylinder are in detachable connection, needles with different specifications can be replaced as required, and the needle stand can retract to the needle cylinder after injection.

Description

technical field [0001] The invention belongs to a medical appliance, in particular to a disposable insulin syringe with replaceable needle and self-destruction. Background technique [0002] With the improvement of people's living standards, the incidence of diabetes is on the rise. According to statistics, there are currently nearly 40 million diabetic patients in my country. Studies have shown that early insulin injection therapy is beneficial to protect the function of islet β cells and prevent complications. Therefore, the most important means of treating diabetes is insulin injection. Existing insulin syringes generally have the problem of reusability, and the processing scrap rate is very high; there are also some self-locking insulin syringes on the market, but during the injection process, the pushing force of the hand is not consistent. When it is finished, the thrust must be increased a little, which speeds up the instant speed of the liquid medicine entering the ...

AI Technical Summary

Problems solved by technology

Due to the small inner diameter of the insulin syringe barrel, it is not easy to install a reasonable self-destruct mechanism in the smaller inner diameter barrel. In addition, most of the needles of existing insulin syringes are fixed with the barrel and cannot be replaced at will. Needle specifications cannot meet the different needs of patients

At present, the market has not yet developed a self-destructing insulin syringe that can change the needle size at will and retract the needle into the syringe after the injection is completed.

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