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Decompression spring suitable for automatic injector

A technology of automatic injector and decompression spring, applied in the field of decompression spring, which can solve the problems of secondary impact and discomfort on the skin

Inactive Publication Date: 2021-09-14
苏州嘉树生物医疗科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, during use, due to the secondary impact of the foil shell on the skin of the injection site under the force of the secondary spring, there is a certain sense of discomfort during use

Method used

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  • Decompression spring suitable for automatic injector
  • Decompression spring suitable for automatic injector
  • Decompression spring suitable for automatic injector

Examples

Experimental program
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Effect test

Embodiment Construction

[0039]The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0040] like Figures 1 to 4 A decompression spring suitable for automatic injectors includes a compression spring body 6, which is different in that: the compression spring body 6 used is a variable pitch structure. Specifically, the two ends of the compression spring body 6 are respectively provided with a bottom end compression section 1 and a top end compression section 2 . At the same time, the middle section of the compression spring body 6 is distributed with a section 3 with a middle section pressure distance. In order to bear the pressure brought by the firing and prevent the pressure from acting directly on the foil shell, avoiding the user from feeling improper ...

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Abstract

The invention relates to a decompression spring suitable for an automatic injector. The decompression spring comprises a compression spring body, the compression spring body is of a variable pitch structure, the two ends of the compression spring body are respectively provided with a bottom end compression section and a top end compression section, the middle section of the compression spring body is provided with middle compression pitch sections, and the bottom end compression section and the middle compression pitch sections as well as the top end compression section and the middle compression pitch sections form a deformation section. Therefore, by means of the distribution of the middle compression pitch sections, the top end pressed section and the middle section compression pitch sections, a deformation stress transmission mode for a buffering effect is achieved, stress impact in the percussion period is reduced, and the use comfort of a user is improved. Secondary impact pressure cannot be generated when a contusion shell makes contact with the skin, and stable percussion and contusion can be achieved when the user uses the function.

Description

technical field [0001] The invention relates to a spring assembly, in particular to a decompression spring suitable for an automatic injector. Background technique [0002] At present, in order to facilitate users to realize independent and convenient automatic injection, automatic injectors have been relatively popular. Considering the safety of use, in order to avoid secondary abuse, one-time function presets are often the main ones. [0003] Existing disposable auto-injectors are very complex in design principles, resulting in a large number of parts, generally more than 15, so the reliability is not high, the assembly is difficult, and the final product cost is too high. [0004] CN110237366A discloses a medical injection device, which includes an outer cylinder and a pen cap. One end of the outer cylinder is provided with a detachable drug storehouse, and a replaceable standard cartridge medicine bottle is arranged in the drug storehouse. The inside of the outer cylind...

Claims

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Application Information

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IPC IPC(8): F16F1/04F16F1/06A61M5/31A61M5/20
CPCF16F1/047F16F1/042F16F1/06A61M5/31A61M5/20A61M2005/3143A61M2005/202
Inventor 熊长艳何四现杜嘉文易林川
Owner 苏州嘉树生物医疗科技有限公司
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