Two-stage separate type safe self-destruction syringe

Abstract

The invention discloses a two-stage separate type safe self-destruction syringe, which can reduce the manufacturing difficulty of retractable safe self-destruction syringes through structure modification. A syringe needle connecting base of the syringe comprises a locking cone head and a connecting base that can be separated along the axial direction, the front part of the locking cone head is connected with the syringe needle, the rear part of the locking cone head is limited by the connecting base, the front segment of a core rod is matched with the inner cavity of the syringe needle connecting base and a gap is formed between the front segment of the core rod and the inner cavity of the syringe needle connecting base, a first destruction structure and a second self-destruction structure are arranged at the front segment at an interval in the axial direction and are respectively corresponding to a first non-return structure arranged on the inner wall of the locking cone head and a second non-return structure arranged on the inner wall of the connecting base to form an axial one-way position limiting structure, and when the second destruction structure contacts with the second non-return structure, the first destruction structure is spaced with the first non-return structure. The separation force of the two-stage separate type safe self-destruction syringe can be effectively controlled. The two-stage separate type safe self-destruction syringe facilitates operation of medical care personnel, has good reliability, and is convenient in assembly and suitable for batch production.

Description

technical field [0001] The invention relates to a syringe, in particular to a self-destruct syringe. Background technique [0002] With the continuous promotion of safe injections, self-destructing syringes with self-destructing function have been widely used in clinic. A simple self-destructing syringe is a product that automatically destroys its shape after use, and its function is to prevent disposable products from being reused. For example, snap-in self-destruct syringes are provided with snap-in devices at the front or rear ends of the syringes. When the injection is completed, the occlusal device prevents the push rod and the piston from being withdrawn, thereby forcing self-locking to achieve the purpose of self-destruction. [0003] Another safety self-destruction syringe is to increase the protection of medical staff on the basis of the simple self-destruction syringe shape destruction function, so as to effectively protect medical staff and others from accidenta...

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the disadvantage of high manufacturing difficulty of the existing needle retractable safety self-destructing syringe, the technical problem to be solved by the present invention is to provide a structure improvement to reduce the manufacturing difficulty of the needle retracting type safety self-destructing syringe, so as to improve product reliability. The secondary breakaway safety self-destruct syringe

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