Anti-needling safety device for injection device

Abstract

The invention discloses an anti-needling safety device for an injection device. The anti-needling safety device comprises an injection needle cylinder, an injection piston rod, an auxiliary positioning assembly, a front end nipple, an injection pintle, an injection needle, two sets of mounting assemblies, a contraction assembly and a limiting assembly. A rotating lantern ring is rotated, a linkage rod is driven to move in a following mode, the linkage rod slides in a limiting cavity and compresses a limiting spring, movement of the linkage rod drives a positioning baffle to move, so that the positioning baffle and a positioning check block are dislocated and separated, under reset driving of an extension spring, a linkage injection needle crumples towards the interior of the injection needle cylinder, the injection needle is stored, and the situation that after injection is completed, the injection needle is exposed, accidental puncture occurs and cross infection occurs is avoided; and under the cooperation of the auxiliary positioning assembly, the linkage rod pushes the sliding lantern ring to correspondingly slide on the outer surface of the injection needle cylinder, auxiliary positioning of the injection piston rod is achieved, and the condition of incomplete injection caused by incorrect force application points of workers is avoided.

Description

Technical field [0001] The present invention relates to the art of the syringe, and is specifically an anti-needle stab safety device for injection devices. Background technique [0002] Syringe is a common medical appliance, mainly for injection of liquid or pumping, syringe can also be used in medical equipment, containers, scientific instruments in chromatography, through rubber diaphragm, injection into the blood vessel It can lead to air embolism, the application range of the syringe in medical treatment is wide, the usage is large, but the existing syringe cannot be hired quickly after the use is complete, it is extremely easy to have misunderstandings, and is not conducive to Subsequent recycling. [0003] The traditional apparatus is in the following deficiencies: the overall safety of the existing syringe is poor, and the injection needle cannot be collapsed after the injection is completed, and the condition of accidental acupuncture is very prone, which reduces the saf...

AI Technical Summary

Problems solved by technology

[0002] A syringe is a common medical appliance, mainly used for injecting liquid medicine or drawing liquid. Syringes can also be used for medical equipment, containers, and scientific instruments such as some chromatographic methods to inject through rubber diaphragms, inject gas into blood vessels, and It will lead to air embolism. Syringes are used in a wide range of medical applications and are used in a large amount. However, the existing syringes cannot quickly store the injection needles after use, which is very prone to accidental punctures, and is not conducive to Subsequent recycling

[0003] The traditional device has the following disadvantages: the overall safety of the existing syringe is poor, and the injection needle cannot be collapsed and stored after the injection is completed, which is very prone to accidental needle sticking, which reduces the safety of the syringe and increases the It is difficult to recycle the syringe in the future, which increases the cost of recycling, and the existing syringe does not have auxiliary positioning processing, and it is very easy to cause the drug to be delivered too fast and incompletely due to the change of the force application point when pushing the drug.

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