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.
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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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