Bionic pain-relieving intramuscular injection needle
By using the needle tip and needle tube design of the bionic bee tail needle on the intramuscular injection needle, and using the inverted triangle groove and bionic barb structure, the technical difficulties of the existing painless injection method in reducing pain are solved, achieving a more effective pain relief effect.
Patent Information
- Application Number
- CN202420859173.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-24
- Publication Date
- 2025-04-01
- Estimated Expiration
- 2034-04-24
AI Technical Summary
The existing painless injection methods have technical difficulties in reducing pain perception, especially during intramuscular injection, the friction resistance between the needle and the skin and the stimulation of nerve endings are difficult to effectively reduce.
The needle tip and needle tube design of the bionic bee tail needle are adopted. The inverted triangle grooves are engraved on the inclined surface of the needle tube, and the outer wall of the needle tube is covered with a bionic barbing structure. These structures are used to reduce the resistance during the puncture process and the stimulation to nerve endings.
It significantly reduces the resistance to the puncture process of intramuscular injection needles, reduces the stimulation of muscle nerve endings, and achieves the purpose of reducing pain.
Smart Images
Figure CN222693837U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a bionic pain-reducing intramuscular injection needle, in particular to an intramuscular injection needle used in scenes such as intramuscular injection, puncture, sampling, etc., and belongs to the field of medical equipment. Background Art
[0002] Modern bionics has achieved a lot of research results by studying the structure, function and behavior of organisms. Some of the research results have been applied to technology and industry, providing new ideas and methods for solving practical engineering problems, improving existing technical means, and breaking through high-tech problems. In daily life, we often come into contact with bees. The pain caused by the bee stinger piercing the human body is caused by the bee venom, not the piercing process. The reason is not only that the size of the bee stinger is small, but also because there are barbs on the surface, which can effectively reduce the contact area and thus reduce resistance.
[0003] Medical research shows that the human body can feel the pain of piercing mainly because the needle touches the nerve endings in the dermis, and the friction resistance between the needle and the skin will stimulate the contraction of soft tissue. The friction resistance will further increase to form a positive feedback, which will intensify the pain. At the same time, the contact between the needle and the skin will cause the cells to rupture and release pain-causing substances such as potassium and sodium ions. Therefore, based on the composition of pain-sensitive nerves and skin, the main methods for pain relief or minimal pain needles are (1) using a method that does not touch the nerve endings, that is, using a microneedle array to only penetrate the epidermis but not the dermis. From a medical perspective, it can prevent the drug from being degraded by the intestines and achieve the purpose of precise drug administration, but the disadvantage is that the amount of injected drug is limited and the production cost is high. (2) Based on the insect mouthparts or tail needles, by optimizing the shape of the needle, non-smooth surface drag reduction structures and micro-vibration penetration are generally used to increase lubrication and reduce resistance, thereby reducing the pressure on the nerve endings and achieving the purpose of pain relief. Utility Model Content
[0004] In order to achieve the iteration and upgrade of painless injection methods and overcome the technical difficulties of existing painless injection methods, the purpose of the utility model is to provide a bionic pain-reducing intramuscular injection needle. By imitating the needle tip surface morphology of the bionic bee's tail stinger, the resistance encountered by the intramuscular injection needle during the puncture process is reduced, and the stimulation to the muscle nerve endings during the puncture process is reduced, thereby achieving the purpose of alleviating pain.
[0005] The purpose of this utility model is achieved through the following technical solutions:
[0006] The utility model discloses a bionic pain-reducing intramuscular injection needle, which is mainly composed of a needle tip and a needle tube. The groove on the needle tip bevel is a bionic surface shape of a bee's tail sting, the cross section of the groove on the needle tip bevel is an inverted triangle, and the arrangement direction of the groove on the needle tip bevel is parallel to the outer edge of the bevel, and the arrangement method is equidistant arrangement. The outer wall of the needle tube with a barbed bionic morphology adopts a drag reduction structure that imitates the barbs of a bee's tail sting, that is, the needle tube is composed of a number of bionic structure barbs on the needle tube surface, and the cross section of the barbed bionic morphology is semi-heart-shaped.
[0007] The outer wall of the needle tube with a barbed bionic morphology adopts a drag reduction structure imitating the barbs of a bee's tail sting. In order to meet the manifold requirements of the drag reduction structure imitating the barbs of a bee's tail sting, as a preferred method, in a coordinate system with the middle axis of the needle tube as the Z axis, the spatial coordinates (x, y, z) of the curved surface structure of the outer wall of the needle tube with a barbed bionic morphology satisfy the following expression:
[0008]
[0009] Wherein: k≤z≤k+1, k≥0 and k is an integer.
[0010] Preferably, the axial spacing between adjacent bionic structure barbs is 0.9-1.1 mm.
[0011] Preferably, the barb width of the bionic structure is 0.75-0.85 mm, and the barb height of the bionic structure is 0.45-0.55 mm.
[0012] Preferably, the grooves on the needle tip bevel have a depth of 0.01-0.04 mm, a width of 0.01-0.03 mm, and a spacing of 0.01-0.02 mm.
[0013] Preferably, the barb-shaped bionic morphology of the bionic structure on the needle tube surface is processed by laser etching; and the groove-shaped bionic morphology on the needle tip bevel is processed by chemical etching.
[0014] The bionic bee tail needle vertically punctures the process, reducing the stimulation to the muscle nerve endings during the puncture process. Preferably, the bionic pain-reducing intramuscular injection needle is inserted perpendicular to the surface of the muscle tissue. As a further preferred embodiment, the needle tube is inserted to a depth of 0.5-0.7 times the length of the needle.
[0015] The utility model discloses a working method of a bionic pain-reducing intramuscular injection needle: in the vertical puncture process of a bionic bee tail stinger, the bionic pain-reducing intramuscular injection needle is inserted perpendicularly to the surface of the muscle tissue. The grooves on the inclined surface of the needle tip with an inverted triangle cross section arranged equidistantly are used to reduce the resistance of the bionic pain-reducing intramuscular injection needle tip. After the needle tip vertically penetrates the muscle tissue, the surface barb morphology manifold of the bionic bee tail stinger on the outer wall of the needle tube can further significantly reduce the resistance encountered by the intramuscular injection needle during the puncture process.
[0016] Beneficial effects:
[0017] 1. The utility model discloses a bionic pain-reducing intramuscular injection needle, which is mainly composed of a needle tip and a needle tube. The groove on the needle tip slope is a bionic surface shape of a bee's tail sting, and the cross section of the groove on the needle tip slope is an inverted triangle. The needle tube is composed of a number of bionic barbs on the needle tube surface, and the cross section of the barb-shaped bionic shape is a semi-heart shape. By imitating the surface shape of the bee's tail sting, the resistance encountered by the intramuscular injection needle during puncture is reduced, and the stimulation to the muscle nerve endings during puncture is reduced, thereby achieving the purpose of alleviating pain.
[0018] 2. The utility model discloses a bionic pain-reducing intramuscular injection needle, which constructs an expression for selecting the spatial coordinates (x, y, z) of the curved surface structure of the outer wall of a needle tube with a barbed bionic morphology. According to the expression for selecting the spatial coordinates (x, y, z) of the curved surface structure of the outer wall of the needle tube, the surface barbed morphology manifold of the bionic bee stinger can be quantitatively measured, thereby significantly reducing the resistance encountered by the intramuscular injection needle during puncture.
[0019] 3. The utility model discloses a bionic pain-reducing intramuscular injection needle, which is inserted perpendicularly to the surface of muscle tissue. The insertion depth of the needle is about two-thirds of the length of the needle tube. The insertion process is bionic, and the vertical puncture process of the bee's tail stinger can further reduce the friction between the needle and the muscle during the insertion process, reduce the stimulation to the nerve endings of the muscle tissue, and improve the pain-reducing effect.
[0020] 4. The utility model discloses a bionic pain-reducing intramuscular injection needle. The bionic pain-reducing intramuscular injection needle is constructed with a groove on the inclined surface of an inverted triangle needle tip, which can reduce the contact area between the intramuscular injection needle and the tissue during the process of piercing the patient's skin. During the piercing process, the surface contact is microscopically transformed into line contact, thereby reducing the actual contact area between the needle tip and the tissue during the puncture process, reducing the stimulation to the muscle nerve endings, and achieving the purpose of alleviating pain. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] FIG. 1( a ) is a front view of a needle structure schematic diagram of the present invention;
[0022] FIG1( b ) is a partial enlarged view of the needle tip of FIG1( a );
[0023] FIG. 1( b1 ) is a top view of FIG. 1( b );
[0024] Fig. 1(b2) is a cross-sectional view of Fig. 1(b1);
[0025] FIG1(c) is a partial enlarged view of the outer wall of the needle tube with bionic barbs in FIG1(a);
[0026] FIG1(c1) is a partial cross-sectional view of FIG1(c);
[0027] Figure 1 (c2) is a schematic diagram of the bionic barbs on the outer wall of the needle tube of the utility model;
[0028] Figure 2 is a schematic diagram of the curved surface structure of the outer wall surface of the needle tip in the barbed bionic form;
[0029] In the figure: 1-needle tip, 1.1-grooves on the bevel of the needle tip, 1.1.1-spacing between adjacent grooves on the bevel of the needle tip, 1.1.2-width of the grooves on the bevel of the needle tip, 1.1.3-depth of the grooves on the bevel of the needle tip, 2-needle tube, 2.1-bionic structure barbs on the outer wall of the needle tube, 2.1.1-axial spacing between adjacent bionic structure barbs, 2.1.2-width of the bionic structure barbs, 2.1.3-height of the bionic structure barbs DETAILED DESCRIPTION
[0030] In order to better illustrate the purpose and advantages of the utility model, the utility model is further described below with reference to the accompanying drawings and examples.
[0031] Embodiment 1:
[0032] As shown in Fig. 1(a), the bionic pain-reducing intramuscular injection needle disclosed in this embodiment is composed of a needle tip 1 and a needle tube 2. The needle tip 1 is 2 mm long, the needle tip angle is 11°, and the needle tube length is not less than 37.5 mm.
[0033] As shown in FIG. 1( b ), the cross section of the grooves 1.1 on the needle tip bevel is an inverted triangle, and the arrangement direction of the grooves 1.1 on the needle tip bevel is parallel to the outer edge of the bevel, and the arrangement method is equidistant arrangement.
[0034] As shown in FIG. 1( b2 ), the spacing 1.1.1 between adjacent grooves on the needle tip bevel is 0.01 mm, the width 1.1.2 of the grooves on the needle tip bevel is 0.02 mm, and the depth 1.1.3 of the grooves on the needle tip bevel is 0.02 mm.
[0035] According to different needle models, the bionic groove surface shape and distribution mode can be appropriately adjusted within the above range. However, it is necessary to ensure that the bionic groove occupies less than 30% of the needle tip area to meet the strength requirements.
[0036] As shown in Fig. 1 (c1), the outer wall of the needle tube with barbed bionic morphology adopts a drag reduction structure imitating the barbs of a bee's tail sting. The axial distribution of the bionic barbs 2.1 on the outer wall of the needle tube can occupy about the lower two-thirds of the entire outer wall of the needle tube.
[0037] As shown in FIG. 1 ( c2 ), the axial spacing 2.1.1 between adjacent bionic structure barbs is 1.0 mm, the width 2.1.2 of the bionic structure barbs is 0.8 mm, and the height 2.1.3 of the bionic structure barbs is 0.5 mm.
[0038] like Figure 2 As shown, in the coordinate system with the central axis of the needle tube 2 as the Z axis, the spatial coordinates (x, y, z) of the surface curved structure of the bionic structure barb 2.1 on the outer wall of the needle tube satisfy the following mathematical expression:
[0039]
[0040] Wherein: k≤z≤k+1, k≥0 and k is an integer.
[0041] The processing methods of the barb-shaped and groove-shaped bionic forms are laser etching and chemical etching respectively.
[0042] This embodiment is a bionic pain-reducing intramuscular injection needle, which is suitable for intramuscular injection and other medical scenarios requiring vertical puncture. During injection, in order to better achieve the drag reduction effect, it is necessary to keep the needle perpendicular to the injection site and quickly pierce the muscle. The needle insertion depth is 0.6 times the needle length.
[0043] The bionic pain-reducing intramuscular injection needle disclosed in this embodiment reduces drag by about 19.3% compared with an intramuscular injection needle without a bionic pain-reducing structure.
[0044] Embodiment 2:
[0045] As shown in Fig. 1(a), the bionic pain-reducing intramuscular injection needle disclosed in this embodiment is composed of a needle tip 1 and a needle tube 2. The needle tip 1 is 2.5 mm long, the needle tip angle is 9°, and the needle tube length is not less than 37.5 mm.
[0046] As shown in FIG. 1( b ), the cross section of the grooves 1.1 on the needle tip bevel is an inverted triangle, and the arrangement direction of the grooves 1.1 on the needle tip bevel is parallel to the outer edge of the bevel, and the arrangement method is equidistant arrangement.
[0047] As shown in FIG. 1( b2 ), the spacing 1.1.1 between adjacent grooves on the needle tip bevel is 0.02 mm, the width 1.1.2 of the grooves on the needle tip bevel is 0.03 mm, and the depth 1.1.3 of the grooves on the needle tip bevel is 0.01 mm.
[0048] According to different needle models, the bionic groove surface shape and distribution mode can be appropriately adjusted within the above range. However, it is necessary to ensure that the bionic groove occupies less than 30% of the needle tip area to meet the strength requirements.
[0049] As shown in Fig. 1 (c1), the outer wall of the needle tube with barbed bionic morphology adopts a drag reduction structure imitating the barbs of a bee's tail sting. The axial distribution of the bionic barbs 2.1 on the outer wall of the needle tube can occupy about the lower two-thirds of the entire outer wall of the needle tube.
[0050] As shown in FIG. 1 ( c2 ), the axial spacing 2.1.1 between adjacent bionic structure barbs is 1.1 mm, the width 2.1.2 of the bionic structure barbs is 0.85 mm, and the height 2.1.3 of the bionic structure barbs is 0.45 mm.
[0051] like Figure 2 As shown, in the coordinate system with the central axis of the needle tube 2 as the Z axis, the spatial coordinates (x, y, z) of the surface curved structure of the bionic structure barb 2.1 on the outer wall of the needle tube satisfy the following mathematical expression:
[0052]
[0053] Wherein: k≤z≤k+1, k≥0 and k is an integer.
[0054] The processing methods of the barb-shaped and groove-shaped bionic forms are laser etching and chemical etching respectively.
[0055] This embodiment is a bionic pain-reducing intramuscular injection needle, which is suitable for intramuscular injection and other medical scenarios requiring vertical puncture. During injection, in order to better achieve the drag reduction effect, it is necessary to keep the needle perpendicular to the injection site and quickly penetrate into the muscle, and the needle penetration depth is 0.7 times the needle length.
[0056] The bionic pain-reducing intramuscular injection needle disclosed in this embodiment reduces drag by about 16.7% compared with an intramuscular injection needle without a bionic pain-reducing structure.
[0057] The specific description above further illustrates in detail the purpose, technical solutions and beneficial effects of the utility model. It should be understood that the above description is only a specific embodiment of the utility model and is not intended to limit the scope of protection of the utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the scope of protection of the utility model.
Claims
1. A bionic pain-reducing intramuscular injection needle, characterized in that: It is mainly composed of a needle tip and a needle tube; the groove on the inclined surface of the needle tip is simulated by the surface shape of a bee's tail sting, the cross-section of the groove on the inclined surface of the needle tip is an inverted triangle, and the arrangement direction of the groove on the inclined surface of the needle tip is parallel to the outer edge of the inclined surface, and the arrangement method is equidistant arrangement; the outer wall surface of the needle tube with a barbed bionic morphology adopts a drag reduction structure that simulates the barbs of a bee's tail sting, that is, the needle tube is composed of a number of bionic structural barbs on the surface of the needle tube, and the cross-section of the barbed bionic morphology is semi-heart-shaped.
2. A bionic pain-reducing intramuscular injection needle as claimed in claim 1, characterized in that: In a coordinate system with the central axis of the needle tube as the Z axis, the spatial coordinates (x, y, z) of the curved surface structure of the outer wall of the needle tube with a barbed bionic morphology satisfy the following expression: Wherein: k≤z≤k+1, k≥0 and k is an integer.
3. A bionic pain-reducing intramuscular injection needle as claimed in claim 1 or 2, characterized in that: The axial spacing between adjacent bionic structure barbs is 0.9-1.1 mm.
4. A bionic pain-reducing intramuscular injection needle as claimed in claim 1 or 2, characterized in that: The barb width of the bionic structure is 0.75-0.85 mm, and the barb height of the bionic structure is 0.45-0.55 mm.
5. A bionic pain-reducing intramuscular injection needle as claimed in claim 1 or 2, characterized in that: The grooves on the needle tip bevel have a depth of 0.01-0.04 mm, a width of 0.01-0.03 mm, and a spacing of 0.01-0.02 mm.
6. A bionic pain-reducing intramuscular injection needle as claimed in claim 1 or 2, characterized in that: The processing method of the barb-shaped bionic morphology of the bionic structure on the needle tube surface is laser etching; the processing method of the groove-shaped bionic morphology on the needle tip bevel is chemical etching.
7. A bionic pain-reducing intramuscular injection needle as claimed in claim 1 or 2, characterized in that: The bionic pain-reducing intramuscular injection needle is inserted perpendicularly to the surface of the muscle tissue.
8. A bionic pain-reducing intramuscular injection needle as claimed in claim 7, characterized in that: The insertion depth of the needle is 0.5-0.7 times the length of the needle.