Ejection type painless intravenous injection needle tube device

An injection needle, ejection technology, applied in the field of intravenous injection syringe device

Inactive Publication Date: 2011-07-06
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Hygienic safety concerns exist as the device is a reusable injection aid

Method used

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  • Ejection type painless intravenous injection needle tube device
  • Ejection type painless intravenous injection needle tube device
  • Ejection type painless intravenous injection needle tube device

Examples

Experimental program
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Embodiment Construction

[0015] The specific content and working process of the present invention will be further described below in conjunction with the embodiments shown in the accompanying drawings.

[0016] The ejection-type micro-pain intravenous injection needle device provided by the present invention adopts two-stage injection steps. In the first stage, spring ejection is used to penetrate the epidermis and subcutaneous nerve endings at high speed, reducing the stimulation effect of injection on nerve endings and achieving the purpose of pain relief during the puncture process; In the second stage, the puncture is manually advanced and fed into the vein to achieve the purpose of intravenous injection.

[0017] The ejection type micro-pain intravenous injection needle device of the present invention is composed of a bracket 1, a power spring 7, a positioning groove 1 (a) on the front end of the bracket, an ejection button 4, a buffer block 8, a push rod 3 and an injection needle unit 2. The IV ...

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Abstract

The invention relates to an ejector painless intravenous injection needle tube device, which is applied to the field of disposable medical apparatuses of medical treatment projects such as clinical intravenous injection and infusion and blood taking. The invention aims to relieve pain and discomfort of patients in the process of intravenous infusion or blood taking. The device mainly comprises a feeding mechanism, wherein the feeding mechanism comprises a feeding rod (3), a dynamic spring (7) and an ejection and trigger device (3(b)); the feeding rod (3) is arranged on the upper surface of a bracket (1) and connected with an entry needle unit (2) in the bracket (1); the rear end of the entry needle unit (2) is fixed on an entry needle joint (2(a)) of the feeding rod; the feeding rod (3) is provided with a spring clamping position 3(c); one end of the dynamic spring (7) is arranged in the spring clamping position 3(c), and the dynamic spring (7) controls the feeding speed and feeding amount of an entry needle; and the ejection and trigger device (3(b)) is arranged on the rear part of the feeding rod (3) and is controlled by an ejection button (4) for ejection.

Description

technical field [0001] The invention relates to an intravenous injection needle tube device for reducing injection pain, which is applied in the field of disposable medical devices for clinical intravenous injection infusion, blood collection and other medical items. Background technique [0002] Injection is an indispensable and important means in clinical medical treatment. Whether it is the sampling of body fluid for case analysis or the injection of various drugs used in clinical treatment, it is inseparable from the injection (puncture) needle. However, the pain caused by the destruction and stimulation of the subcutaneous nerve tissue during the injection will make the patient uneasy and repulsed by treatment. At present, there are mainly the following painless injection techniques based on reducing injection pain: (1) Epidermal drug delivery, such as microneedle array, needle-free injection and other technologies. The principle of this technology for pain relief is t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61M5/00A61M5/31
Inventor 丛茜金敬福李岩齐迎春曹敏王京春
Owner JILIN UNIV
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