A safe self-destruct syringe

Abstract

The invention discloses a safe self-destruction syringe, which comprises a jacket, a core rod, a rubber plug, a locking mechanism and a needle seat. , the outer casing is arranged vertically; the core rod is inserted into the outer casing from the lower end opening of the outer casing; a core rod boss is arranged on the top of the core rod; the rubber plug is sleeved on the core rod The boss of the core rod is inserted into the screw lock ring from the lower opening of the screw lock ring, the screw lock is sleeved on the screw lock ring, and the screw sleeve connected to the screw lock. The safe self-destructing syringe of the present invention adds a set of locking mechanisms, which can prevent the screw mouth from falling off together with the injection needle during use, and can be easily pulled back together with the screw mouth when the core rod is retracted. The over-used syringe has an obvious destroying effect, which can prevent the syringe from being reused.

Description

technical field [0001] The invention relates to a safe self-destruction syringe, which belongs to the technical field of medical devices. Background technique [0002] Safety syringes are mainly designed to prevent accidental injury to medical staff during the use of syringes, as well as to prevent cross-infection from repeated use of syringes, and to facilitate the subsequent recycling, transportation and disposal of medical waste; [0003] At present, the design idea of ​​the safety syringe is to retract the injection needle into the injection syringe after use, and destroy the syringe at the same time to make it invalid, so as to achieve the above-mentioned purpose. [0004] The Chinese patent with the application number 201520253101X discloses a safety syringe with a separate design of the jacket and the screw port, which has a significant effect on the destruction of the used syringe and can prevent the syringe from being reused. For the used syringe, the plunger is ret...

AI Technical Summary

Problems solved by technology

However, the connection between the screw and the outer jacket relies on interference fit to fix the screw, which brings a contradiction. The interference is small, and the screw with the needle is easy to fall off during use, which may cause the injection of the patient. When the screw mouth falls off together with the injection needle; it will be more laborious to pull the screw mouth out after the use of the large interference. After the product is used, the screw mouth cannot be pulled down, and the design purpose of the safety syringe is lost. Considering the processing The precision level of the process, it is very difficult to reach this intermediate point

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