Improved type safe self-destroyed syringe

Abstract

The invention relates to a secure self-destructing syringe. A sealing piston which is sealed with an outer casing and is connected with the outer casing in a sliding way is arranged in the outer casing. A movable needle base which is grafted with the outer casing in a sealing way is arranged in the outer casing. A needle installation part is arranged on the movable needle base. An empty cavity between the opposite end parts of the movable needle base and the sealing piston forms an infusion liquid storing cavity body. The movable needle base and the inside of the needle installation part are communicated with the injection liquid storing cavity body. A heave part and a lock base which are mutually matched in a lapping way are arranged on the movable needle base and the outer casing. A hook extending into the injection liquid storing cavity body is arranged on the movable needle base. A tightening inclined plane of the hook is arranged on the sealing piston. A deflection hole is arranged under the tightening inclined plane. An axis of the deflection hole and an axis of the outer casing are arranged in a deflection way. A buckling cavity for integrating the sealing piston with the hook is arranged on the sealing piston. The diameter of the outer casing on one side of the hook is larger than the external diameter of the movable needle base. The outer casing on the other side of the hook keeps the movable needle base in the outer casing. When in use, the secure self-destructing syringe can avoid the overlarge power of needle withdrawing and the over-small power of needle retracting and totally realizes the secure self-destruction.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to an improved safe self-destruction syringe. Background technique [0002] At present, there are many kinds of self-destructing syringes, and there are also many safe syringes, but there are not many syringes that can both self-destruct and achieve safe effects. The structure of general safety syringes is mainly in the form of retracting the needle. This structure has technically difficult problems, that is, the force to prevent the needle from being withdrawn must be greater than the force of artificially (automatically) retracting the needle. . If the force of positioning (to prevent needle withdrawal) is set too high, the needle can be prevented from withdrawing, but the force of retracting the needle will also increase, and it will be larger, which will eventually lead to safety hazards; if the positioning (prevention of needle withdrawal) is set The force is small, b...

AI Technical Summary

Problems solved by technology

Existing safety syringes are easy to retract the needle point into the syringe jacket due to insufficient anti-retraction force during clinical needle injection, and the liquid medicine leaks everywhere on the patient's body, resulting in medical accidents

Images