Disposable Safety Insulin Needles

Abstract

A disposable secure insulin injection needle, comprising a needle body (6), a needle seat (2), a main housing (3) and an outer sheath (8). The outer sheath (8) is sheathed outside the main housing (3). A locking structure for cooperating a clamping block (81) and a bayonet (38) is disposed between the outer sheath (8) and the main housing (3). A seat disc (23) is disposed on the needle seat (2). An outer edge of the seat disc (23) and an inner edge of the main housing (3) have a slide positioning connection relationship. During mounting of the injection needle, the seat disc (23) moves from a first locating position to a second locating position using an axial thrust at the head of an insulin pen, and the outer edge of the seat disc (23) jacks the clamping block (81) on the outer sheath (8), such that the clamping block (81) and the bayonet (38) are separated from each other, and the outer sheath (8) and the main housing (3) are unlocked. The outer sheath is allowed to be removed under this state, and the use security and convenience are 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 in conjunction with an insulin pen for self-administration or administration by others, wherein the insulin pen is reusable, and the injection needle is a one-time-use needle. Background technique [0002] Diabetes is a metabolic disease characterized by high blood sugar. There is currently no cure, but injecting insulin into patients can effectively control the disease. [0003] Insulin injection tools are various, and the insulin injection needle described in the present invention is an injection tool used in conjunction with an insulin pen, wherein the insulin pen carries a prescribed amount of insulin liquid medicine and is reusable, and the injection needle is a Single-use needles with safety guards. [0004] Chinese patent CN101563124A discloses an invention patent application titled "needle pr...

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;

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