Solid medicine injection syringe

Abstract

The invention provides a solid medicine injection syringe which comprises a syringe needle fixing support, a medicine pusher, a return sleeve in linkage with the syringe needle fixing support, a needle tube sleeve, a spring return support and a spring. The needle tube sleeve and the medicine pusher can form a first buckle. The return sleeve has a first unlocking characteristic for unlocking the first buckle. The return sleeve and the needle tube sleeve can form a second buckle. The medicine pusher has a second unlocking characteristic for unlocking the second buckle. The return sleeve and the medicine pusher can form a buckle, which can be loosened based on an external force, with a third limiting groove. The second unlocking characteristic forms the first buckle while unlocking the second buckle, and the first unlocking characteristic forms the buckle which can be loosened based on the external force while unlocking the first buckle. Solid medicines can be directly injected into the human-body subcutaneous tissue hurt by a syringe needle, medicine breakage is avoided, the tissue bleeding and injection probability is reduced, and meanwhile wound hurt can be avoided.

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

Images