Solid medicine injection syringe

Abstract

The present invention provides a solid drug injector, comprising: a needle fixing bracket; a drug pusher; a retracting sleeve linked with the needle fixing bracket; a needle sleeve; a spring retracting bracket; a spring; a needle sleeve A first buckle can be formed with the drug pusher; the retraction sleeve is provided with a first unlocking feature for unlocking the first buckle; the retraction sleeve can form a second buckle with the needle sleeve; the medicine pusher There is a second unlocking feature for unlocking the second buckle; the retreat sleeve can be provided with the drug pusher to form a buckle that can be released by external force with the third limiting groove; the second unlocking feature unlocks the second buckle at the same time The first snap fit will be formed, and the force-releasable snap fit will be formed when the first unlocking feature unlocks the first snap fit. It can directly inject the solid drug into the human subcutaneous tissue damaged by the needle, avoid drug breakage, and reduce the chance of tissue bleeding and infection; at the same time, it can avoid damage to the wound.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a solid medicine injector. Background technique [0002] At present, in the field of medicine, it is very common to inject drugs into patients' bodies by injection, and preventing needle injuries is a common concern in the industry. [0003] To prevent needle injuries, many syringes are equipped with safety systems that shield the needle after the injection is complete. [0004] For example, Chinese patent CN1420794 A discloses a self-operating safety sheath system for syringes, including an inner holder into which a syringe can be inserted, and an outer sheath mounted outwardly from the inner holder, which is in a retracted position Axially movable between the extended and extended positions, the spring is positioned between the inner retainer and the outer sheath. When in use, the needle is inserted into a patient, the thumb button is depressed, and the plunger slides...

AI Technical Summary

Problems solved by technology

[0005] However, the above-mentioned patents have the following defects: 1) When injecting, the drug stick needs to be pushed into the subcutaneous fat tissue of the human body that has not been damaged by the needle tip, and clinical data show that there will be a certain probability of causing tissue bleeding and infection; 2) During injection, clinical data show that the medicine stick has a certain probability of breaking 3) When the protective cap rebounds, it will bounce near the wound, causing certain pain and fear

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