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Injection needle assembly and drug injection device

A technology of assembly and injection needle, which is applied in the directions of hypodermic injection instruments, needles, medicine instruments, etc., can solve problems such as wrong puncture, and achieve the effect of improving safety

Active Publication Date: 2021-03-19
TERUMO KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the needle point of the needle tube is always exposed, the needle point of the needle tube may accidentally puncture the user after the injection of the drug or when the drug injection device is discarded.

Method used

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  • Injection needle assembly and drug injection device
  • Injection needle assembly and drug injection device
  • Injection needle assembly and drug injection device

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach example

[0023] 1-1. An example of a composition of injection needle assembly and a drug injection device

[0024] 1-2. Method of use of drug injection device

no. 1 approach example ＞

[0028] 1-1. An example of a composition of injection needle assembly and a drug injection device

[0029] First, refer to Figure 1 ~ 2 An injection needle assembly and a pharmaceutical injection device of the first embodiment (hereinafter referred to as "this example" is illustrated.

[0030] figure 1 It is a perspective view showing the pharmaceutical injection device of this example. figure 2 It is a cross-sectional view showing the injection needle assembly of this example.

[0031] The drug injection device 1 is used to puncture the tip to the surface of the skin to inject the agent on the upper layer of the skin.

[0032] Here, the skin consists of three parts of the epidermis, leather and subcutaneous tissue. The epidermal is a layer from about 50 to 200 μm from the skin surface, and the dermis is the layer from 1.5 to 3.5 mm from the skin. Since the flu vaccine is generally subcutaneous or intramuscular, it is administered to the lower portion of the skin or a deeper pa...

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Abstract

The injection needle assembly includes a needle tube, a needle seat, a main body, a connecting part and a spring pressing part. The main body is movable to a first position where the needle tip of the needle tube is separated from and exposed, and a second position where the needle tip of the needle tube is covered. Furthermore, at the first position, at least a part of the main body protrudes toward the needle tip side of the needle tube rather than the contact surface.

Description

Technical field [0001] The present invention relates to an injection needle assembly and a pharmaceutical injection device used when the agent is injected into the organism. Background technique [0002] The drug injection device is configured to include an injection needle assembly and a container of the accommodating agent. The needle tube provided in the injection needle assembly has a tip that can be punctured in the organism. Since the needle tip of the needle is always exposed, the needle tip of the needle tube is possible to smash the user after the administration of the drug injection and the discardment of the drug injection device. [0003] In order to eliminate such a poor situation, for example, Patent Document 1 describes a technique including a protective body and a rotational support portion capable of rotating. Further, in the technique described in Patent Document 1, after puncture the needle tube in the organism, the protective body is rotated, and the needle ti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61M5/32
CPCA61M5/32A61M5/31513A61M5/31515A61M5/3216A61M5/3221A61M2005/3228A61M2202/04
Inventor 川本英二
Owner TERUMO KK