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Automatic injection pen

An automatic injection and syringe technology, applied in the direction of automatic injectors, syringes, hypodermic injection equipment, etc., can solve problems such as imperfect functions, safety hazards, inconvenient operation, etc., and achieve the effect of ingenious structural design, reduced operation actions, and reliable autonomous injection

Active Publication Date: 2021-10-15
SUZHOU SAVICRED BIOTECHNOLOGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there are many automatic injection pen products with the above functions on the market, but there are still some defects such as unreliable connection of parts, complex structure, etc., or ineffective functions. Perfect, but there are defects such as inconvenient operation and potential safety hazards

Method used

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Embodiment Construction

[0120] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0121] Such as figure 1 As shown, it is a schematic diagram of the overall shape of the automatic injection pen of the present invention when it is not in use. It is a cylindrical pen-shaped structure that can be easily held by the operator as a whole, including a pen tube main body 21, a pen tube stopper 22, and a pen cap 23 The pen tube main body 21 and the pen tube stopper 22 are fixed together by buckles, and an automatic injection device is provided inside, and the pen cap 23 is covered on one end of the pen tube main body 21, and a clip is arranged between the two. tight structure, but by holding the pen tube main body 21 with one hand and the pen cap 23 with the other hand, the pen cap 23 can be easily removed from the pen tube main body 21, that is to say, figure 2 In the ready-to-use state shown, the hidden needle cover 3 located in ...

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Abstract

The invention relates to an automatic injection pen, and the automatic injection pen comprises a shell, a needle hiding sleeve, an inner sleeve and an injector assembly. The hidden needle sleeve is installed in the shell in a sliding mode. A lower spring sleeve is fixed on the inner side of the lower part of the needle hiding sleeve; a lower spring clamping hook protruding inwards is arranged on the upper portion of the lower spring sleeve. The inner sleeve is mounted in the needle hiding sleeve in a sliding manner; a sliding groove is formed in the outer side of the lower portion of the inner sleeve, and the lower spring clamping hook is clamped in the sliding groove. A narrowing spring is arranged between the lower part of the inner sleeve and the lower spring sleeve; the injector assembly comprises a needle cylinder, a needle head and a piston assembly; the needle cylinder is mounted in the inner sleeve; a piston assembly is arranged in the upper part of the needle cylinder; a medicine pushing spring is arranged on the outer side of a spring supporting part of the piston assembly and is pressed against the top of the inner side of the inner sleeve in a pre-compression mode. According to the automatic injection pen, through organic linkage of the medicine pushing spring and the needle retracting spring, one action is achieved, and the whole set of needle inserting, injection and needle retracting actions are completed.

Description

technical field [0001] The present invention relates to a pen-like injector with automatic injection. Background technique [0002] A syringe is a commonly used medical device. A conventional syringe only includes three core components: a syringe, a needle, and a piston. By pushing the piston, the medicine in the syringe can be conveniently injected into the body through the needle. However, if non-medical occasions such as household use are performed by non-medical professionals, it is necessary to prick the needle, administer the drug, and pull out the needle. Each operation has certain technical requirements; and after the injection is completed, the exposed needle is dangerous. Special handling is required. Therefore, the automatic injection pen was invented to improve the convenience of injection. It only needs simple actions to realize the coherent action of pricking the needle, administering the drug, and pulling out the needle. Because its shape is designed as a pen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M5/20A61M5/32
CPCA61M5/20A61M5/2033A61M5/32A61M5/3205A61M2005/202A61M2005/206
Inventor 王静邹红霞沈玮
Owner SUZHOU SAVICRED BIOTECHNOLOGY CO LTD
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