Multi-needle-tube array and injection needle and syringe with same

Abstract

The invention provides a multi-needle-tube array and an injection needle and syringe with the same. The multi-needle-tube array comprises a fixing component, at least two injection needle tubes and aglue layer. The middles of the top and bottom of the fixing component are provided with open pools surrounded by sidewalls same in height respectively, the top open pool is communicated with the bottom open pool via through holes, and the through holes include the top through holes and the bottom through holes both of which are connected from top to bottom; the tail end of each injection needle tube penetrates into the corresponding bottom through hole through the corresponding top through hole, the tip end of each injection needle tube protrudes from the top of the side wall of the fixing component and extends upward, and each injection needle tube is provided with the corresponding through holes; the space between the outer walls of the injection needle tubes and the side walls of the through holes are filled with the glue layer, and the glue layer is used for fixing the injection needle tubes in the through holes. The multi-needle-tube array has the advantages of small, simple and firm structure, simple manufacturing process, high yield, great consistency and uniformity, low cost and wide application prospect.

Description

technical field [0001] The invention relates to the technical field of medical and cosmetic devices, in particular to a multi-needle tube array and an injection needle and a syringe with the same. Background technique [0002] As a key part of the syringe, the multi-needle injection needle is mainly used to inject a small / small amount of medicinal liquid or cosmetic skin care solution into the skin or subcutaneously for a painless / slightly painful and uniform rapid injection, although the number of needles on the needle is usually only 2-16, but the metal needles used are very slender, the diameter is often less than 0.25mm and the length of the protruding needle tip for puncture is only 0.5-2mm. Since the skin of the human body, especially the face, is very soft and uneven, in order to ensure uniform injection and no leakage when the needle tip is very short, it is required that the distance between the needle tubes and the area occupied by the needle tube array should not ...

AI Technical Summary

Problems solved by technology

[0003] As we all know, the thinner and shorter the needle tube, the more difficult it is to operate and control it accurately, reliably and quickly

Facing the limitations of the ability to precisely arrange, position, and clamp fine needle tubes, on the one hand, the length of needle tubes produced in batches by existing automatic needle grinding machines is relatively long (>12mm). Setting and fixing most of the length of the needle tube (at least 10mm) in the needle seat is obviously different from the traditional needle with a single needle; on the other hand, how to integrate these Accurate, reliable, and fast arrangement, separation, and transportation of thin and short needle tubes pose serious challenges. Among them, how to achieve rapid and accurate positioning of multiple needle tube arrays on the same needle base with a very limited size Assembly, positioning, and gluing and fixing are even more difficult, because as long as one of the needle tubes is not positioned accurately or is blocked by glue, it will become a waste product. The more needle tubes, the smaller the spacing, and the shorter the needle tip, the higher the yield. lower

Existing multi-barrel injection needles are usually a simple integration of the traditional single-barrel injection needle structure. On the one hand, in order to facilitate assembly, the needle spacing is usually set very wide (about 5mm), and the size of the needle assembled from multiple needle barrels is just It must be very large, which is not conducive to the uniformity and convenience of injection, and it is easy to cause liquid leakage; on the other hand, in order to avoid blocking the needle tube when gluing, the protruding needle tip is usually longer than the actual puncture length when dispensing Many needles need to be dispensed one by one, and then another height-limiting structure needs to be installed to reduce the length of the protruding needle tip, which will undoubtedly significantly increase the complexity and cost of the entire structure, and the work efficiency is very low

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