Low-invasive painless syringe needle

Abstract

The utility model relates to a low-wound painless injection needle which comprises a needle body section and a needle eye section formed by cutting an original section, the needle is symmetrical according to the symmetry plane of the needle, and the needle eye section comprises a stabbing and cutting section, a breaking and cutting section, a bionic resistance reducing section and a low-wound section which are sequentially arranged in the direction from the needle tip to the needle body section; the stabbing and cutting section comprises two first concave cylindrical surfaces which are symmetrical according to the symmetrical surface of the needle head; the breaking and cutting section is formed by chamfering the original cutting surface; the bionic resistance reduction section comprises a plurality of second concave cylindrical surfaces; and the low-wound section is formed by rounding the original section. By arranging the puncturing and cutting section, the needle head is sharper, the puncturing part of the needle head is thinner, and the pain-free feeling is enhanced; by arranging the bionic resistance reduction section, the skin nerves of the patient are regularly relaxed, and the pain feeling is reduced. By arranging the bionic anti-drag section and the low-wound section, an original sharp inclined plane is changed into a smooth structure, cutting to blood vessels is reduced, and after the original mode that the needle head is inserted and slides and cuts at the same time is changed into the mode that the needle head punctures the blood vessels, the needle head is inserted in the state that a puncturing opening expands naturally and elastically.

Description

Technical Field

[0001] This utility model relates to the field of medical devices, specifically to a minimally invasive and painless injection needle. Background Technology

[0002] Needles are essential tools for intramuscular or intravenous injections, especially intravenous needles, which need to minimize trauma to blood vessels and reduce pain as much as possible. Most of the pain from acupuncture comes from the moment the skin is pierced; sufficiently fine needles can reduce or even eliminate pain, such as acupuncture needles, which are virtually painless.

[0003] Chinese patent CN104740731A discloses a biomimetic intravenous drip needle for infants, which reduces pain by applying a non-smooth drag-reducing treatment to the surface of the needle. Chinese patent CN2714074Y discloses an ultra-sharp painless needle, whose core innovation lies in making the needle sharper through processing techniques. Neither traditional needles nor the needles mentioned in the two patents have effectively improved the needle from a minimally invasive perspective; therefore, no truly effective painless needles have been seen in clinical application. Utility Model Content

[0004] To address the above problems, this utility model proposes a minimally invasive and painless injection needle, the specific technical solution of which is as follows:

[0005] A minimally invasive and painless injection needle includes a needle body segment and a needle eye segment cut from the original cut surface. The needle is symmetrical according to its symmetry plane. The needle eye segment includes a piercing segment, a breaking segment, a biomimetic drag-reducing segment, and a minimally invasive segment arranged sequentially from the needle tip to the needle body segment. The piercing segment includes two first concave cylindrical surfaces symmetrical according to the needle's symmetry plane. The breaking segment is formed by chamfering the original cut surface. The biomimetic drag-reducing segment includes multiple second concave cylindrical surfaces. The minimally invasive segment is formed by rounding the corners of the original cut surface.

[0006] Furthermore, the biomimetic drag reduction surface is based on the non-smooth drag reduction mechanism. By setting multiple second concave surfaces, the wider edge part in the middle of the needle tip's oblique section forms a wavy undulating structure, thereby achieving the purpose of non-smooth drag reduction. There are 6 second concave cylindrical surfaces, which are symmetrically arranged according to the needle tip's symmetrical surfaces.

[0007] Furthermore, the included angle between the sides of the two first concave cylindrical surfaces furthest from the tip is 10-15°.

[0008] Furthermore, looking at the needle axis, the piercing and cutting segments together account for one-third of the needle eye segment, while the biomimetic drag-reducing segment and the low-injury segment each account for one-third of the needle eye segment.

[0009] The beneficial effects of this utility model are as follows:

[0010] By designing a piercing section, the needle is made sharper and the insertion portion is thinner, enhancing painlessness. A biomimetic resistance-reducing section allows for regular relaxation of the patient's skin nerves, reducing pain. The biomimetic resistance-reducing and low-invasive sections transform the original sharp bevel into a smooth structure, reducing cutting into blood vessels. The needle is now inserted after puncturing the vessel, allowing it to naturally expand elastically, thus reducing pain. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 This is a schematic diagram of the minimally invasive and painless injection needle described in this utility model.

[0013] In the diagram: 1. Original cut surface; 2. Broken cut segment; 3. Piercing cut segment; 4. Bionic drag reduction segment; 5. Low-injury segment. Detailed Implementation

[0014] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0015] The present invention provides the following specific implementation scheme:

[0016] like Figure 1As shown, this utility model provides a low-invasive, painless injection needle, including a needle body segment and a needle eye segment cut from the original cut surface 1. The needle is symmetrical according to its symmetry plane. In this embodiment, the needle is placed with the symmetry plane of the needle perpendicular to the ground. The needle eye segment includes a piercing segment 3, a breaking segment 2, a biomimetic drag-reducing segment 4, and a low-invasive segment 5 arranged sequentially from the needle tip to the needle body segment. The piercing segment 3 includes two first concave cylindrical surfaces symmetrical according to the symmetry plane of the needle. The breaking segment 2 is formed by chamfering along the edge 1 of the original cut surface. The biomimetic drag-reducing segment 4 includes multiple second concave cylindrical surfaces. The low-invasive segment 5 is formed by rounding the corners along the edge of the original cut surface 1. On the same side of the symmetry plane of the needle, the piercing segment 3, the breaking segment 2, the biomimetic drag-reducing segment 4, and the low-invasive segment 5 are connected sequentially at their outermost edges on the original cut surface 1.

[0017] In this embodiment, the first concave cylindrical surface and the second concave cylindrical surface are perpendicular to the ground.

[0018] Preferably, the biomimetic drag reduction surface is based on the non-smooth drag reduction mechanism. By setting multiple second concave surfaces, the wider edge part in the middle of the needle tip's oblique section forms a wavy undulating structure, thereby achieving the purpose of non-smooth drag reduction. There are 6 second concave cylindrical surfaces, which are symmetrically arranged according to the needle tip's symmetrical surface.

[0019] Preferably, the included angle between the two first concave cylindrical surfaces away from the tip is 10-15°, while the tip angle of commercially available needles is usually 20-30°.

[0020] Preferably, from the perspective of the needle axis, the piercing segment 3 and the breaking segment 2 together occupy one-third of the needle eye segment, and the biomimetic drag reduction segment 4 and the low-injury segment 5 each occupy one-third of the needle eye segment.

[0021] By incorporating the cutting segment 3, the needle is made sharper and the insertion portion is thinner, enhancing painlessness. The biomimetic resistance-reducing segment 4 allows for regular relaxation of the patient's skin nerves, reducing pain. Furthermore, by combining the biomimetic resistance-reducing segment 4 and the low-invasive segment 5, the originally sharp bevel is transformed into a smooth structure, reducing the cutting of blood vessels. The original method of the needle sliding and cutting during insertion is replaced with insertion after puncturing the blood vessel, allowing the needle to be inserted while the puncture site is naturally elastically expanded, thus also reducing pain.

[0022] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A minimally invasive and painless injection needle, comprising a needle body segment and a needle eye segment cut from the original cut surface (1), wherein the needle is symmetrical according to its symmetrical surface, characterized in that: The needle eye segment includes a piercing segment (3), a breaking segment (2), a biomimetic drag reduction segment (4), and a low-wound segment (5) arranged sequentially from the needle tip to the needle body segment; the piercing segment (3) includes two first concave cylindrical surfaces symmetrical about the needle tip; the breaking segment (2) is formed by chamfering the original cutting surface (1); the biomimetic drag reduction segment (4) includes multiple second concave cylindrical surfaces; and the low-wound segment (5) is formed by rounding the corners of the original cutting surface (1).

2. The minimally invasive and painless injection needle according to claim 1, characterized in that: There are 6 concave cylindrical surfaces, arranged symmetrically according to the symmetrical arrangement of the needle tip.

3. The minimally invasive and painless injection needle according to claim 1, characterized in that: The included angle between the sides of the two first concave cylindrical surfaces furthest from the tip is 10-15°.

4. The minimally invasive and painless injection needle according to claim 1, characterized in that: From the needle axis, the piercing segment (3) and the breaking segment (2) together account for one-third of the needle eye segment, while the biomimetic drag reduction segment (4) and the low-injury segment (5) each account for one-third of the needle eye segment.

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