Disposable array miniature injection needle head

An injection needle and array technology, which is applied in the field of disposable array micro-injection needles, can solve the problems of reducing patient compliance, injection, and affecting curative effect, and achieves the effect of improving use compliance and avoiding intramuscular injection.

Active Publication Date: 2012-01-25
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In actual operation, because the liquid medicine injected into the subcutaneous area cannot be fully diffused and absorbed within a short period of time, the liquid medicine will often drip out from the eye of the needle according to the above operation method, so that the accuracy of the therapeutic dose cannot be ensured.
[0005] The length of the needle tube of the existing disposable injection needle is usually greater than 15 mm. Even if the diameter of the disposable injection needle on the insulin injection pen is 0.25 mm, the length of the ultra-fine needle tube is 4.5 mm to 12 mm. It cannot be injected directly into the arm and other parts vertically, and the pain during injection still makes many patients, especially children, daunting
Since there is only one needle on each needle, the shorter the length of the needle can reduce pain when injecting the same dose, but the needle must be left in the skin during and after injection to wait for the drug to be fully absorbed time will inevitably increase significantly
The above factors will undoubtedly bring a lot of inconvenience to the patient, which is easier said than done, which reduces the patient's compliance with the correct method of injection treatment and affects the curative effect.

Method used

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  • Disposable array miniature injection needle head
  • Disposable array miniature injection needle head
  • Disposable array miniature injection needle head

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] figure 1 Shows a cross-sectional view of the structure of a disposable array micro-injection needle according to an embodiment of the present invention, which includes a lower needle base 3 of a columnar barrel structure with an open end and a top cover at one end, and the lower needle base 3 is used to connect with the injection fluid reservoir ; An upper needle base 2 is provided above the top cover of the lower needle base 3, and a cavity 15 is formed between the upper needle base 2 and the top cover. The top cover is provided with a through hole connecting the above-mentioned columnar tube and the cavity 15, and the liquid-taking needle 4 is installed in the through-hole. Inside the barrel, it is used to extract the injection solution from the injection solution reservoir to the cavity 15.

[0040]On the upper needle base 2, at least two needle tubes 1 are installed. The needle tubes 1 are short and slender miniature metal needle tubes. The needle tubes 1 are arran...

Embodiment 2

[0047] Figure 4 A cross-sectional view of the structure of the injection needle with an integrated outlet array in the upper needle hub of this embodiment is shown. It is similar to the structure of the injection needle in Example 1, and the main difference is that the upper needle base 2 has a positioning groove array or an outlet array integrated with it, that is, the upper needle base 2 is provided with at least Two positioning grooves or outlets 12, the number and location of the positioning grooves or outlets 12 are set according to the number of needle tubes 1 and the required array distribution, and the needle tubes 1 are fixed in the positioning grooves or outlets 12 by structural adhesive 6.

[0048] Figure 5 It shows a cross-sectional view of the structure of the injection needle with an integrated outlet array in the upper needle seat and grooves on the side wall in this embodiment. its with Figure 4 The structure of the middle injection needle is similar, and...

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Abstract

The invention discloses a disposable array miniature injection needle head which comprises a lower needle base and an upper needle base, wherein the lower needle base is a columnar cylinder of which one end is provided with an opening and the other end is provided with a top cover and which is connected with an injecta reservoir; the upper needle base is arranged above the top cover of the lower needle base, and a cavity is formed between the upper needle base and the top cover; a through hole for communicating the columnar cylinder and the cavity is formed on the top cover, and an injecta extracting needle is arranged in the through hole; one end of the injecta extracting needle is communicated with the cavity, the other end of the injecta extracting needle is positioned in the columnar cylinder, and injecta is extracted from the reservoir to the cavity; at least two needle tubes are arranged on the upper needle base; and one end of each needle tube is a needle tip for puncturing andinjecting the injecta, and the other end of each needle tube is arranged on the upper needle base and is communicated with the cavity. The needle head can be used for the conventional insulin injection pen directly, and medicines such as the insulin and the like can be injected beneath the skin of multiple parts of human bodies vertically, quickly, painlessly, safety and conveniently without leakage under the condition that skin is not pinched by using a plurality of thin and short needle tubes, so the hidden danger of injecting the medicines into muscles is avoided, and the using compliance of patients is improved.

Description

technical field [0001] The invention relates to the technical fields of medical cosmetic equipment and medicine, in particular to a disposable array micro-injection needle. Background technique [0002] Injection techniques and injection devices play an important role in the treatment of diabetes, even as important as the choice of insulin preparations, which is related to the success or failure of blood sugar control. Many medical staff and diabetic patients who receive insulin injections often ignore the impact of injection technique itself on blood sugar control. Clinicians often consider the reasons for failing to achieve the expected blood sugar control goals from the perspectives of insulin preparations and blood sugar self-monitoring, but ignore the impact of injection technology on blood sugar control, and the process of insulin entering the human body through the injection device is a very important process. link. Due to differences in the absorption of insulin by...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M5/32A61M5/31A61M5/34
CPCA61M2037/0061A61M5/283A61M2037/003A61M5/31A61M37/0015A61M5/32A61M5/178A61M2037/0023A61M5/3298A61M5/34F04C2270/0421
Inventor 岳瑞峰王燕
Owner TSINGHUA UNIV
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