Disposable safe insulin injection needle head

Abstract

The invention relates to a disposable safe insulin injection needle head matched with an insulin pen to be used. The disposable safe insulin injection needle head comprises a needle body, a needle seat, a main casing and an outer sheath, wherein the outer sheath is arranged outside the main casing in a sleeving way. The disposable safe insulin injection needle head is characterized in that a locking structure achieving a matching effect through a clamp block and a clamp opening is arranged between the outer sheath and the main casing, a seat disc is arranged on the needle disc, the outer edge of the seat disc has the sliding positioning connecting relationship with the inner edge of the main casing, and during the injection needle head installation, the axial thrust of the insulin pen is used, so that the seat disc moves to a second positioning position from the first positioning position, the outer edge of the seat disc jacks up the clamp block arranged on the outer sheath, the clamp block is unbuckled from the clamp opening, the outer sheath is unlocked with the main casing, and in the state, the outer sheath is allowed to be picked away. The disposable safe insulin injection needle head has the advantages that whether the outer sheath is allowed to be picked away or not and whether the insulin pen and the injection needle head are prepared for the injection state or not are associated, the use safety and the use convenience of the injection needle head are greatly improved.

Description

technical field [0001] The invention relates to a medical insulin injection tool, in particular to a disposable safe insulin injection needle. The injection needle can be used for self-administration or other people's administration when used together with an insulin pen, wherein the insulin pen is reusable, and the injection needle is a single-use needle. Background technique [0002] Diabetes is a metabolic disease characterized by hyperglycemia. There is no cure for it, but injecting insulin to patients can effectively control the disease. [0003] There are various insulin injection tools, wherein the insulin injection needle of the present invention is an injection tool used together with an insulin pen, wherein the insulin pen carries a prescribed amount of insulin liquid medicine and can be reused, and the injection needle is a kind of injection tool. Disposable needle with safety guard. [0004] Chinese patent CN101563124A discloses an invention patent application ...

AI Technical Summary

Problems solved by technology

[0011] 1. The socket between the outer sheath and the main housing has potential safety hazards from the perspective of the protective function of the outer sheath, that is, when the user or other people accidentally pull out the outer sheath, the injection needle will be contaminated and stabbed risk to others;

[0012] 2. From the perspective of product design and use, it is difficult to grasp the effect of the appropriate degree of tightness of the outer sheath to the main shell. If it is loose, it is easy to remove, but there is a risk of falling off; if it is tight, it can ensure the stability of the sleeve, but it is not easy to use. Removal (feel bad), causing inconvenience to the user

Especially under the premise of mass production, it is more difficult to guarantee the consistency of the tightness of the outer sheath socketed with the main shell;

Images