A chronic skeletal muscle injury acupuncture device
By designing an acupuncture device for chronic skeletal muscle injury that includes a accommodating cavity, an adjustment structure, and an array of needles, the problems of non-standard operation and poor repeatability in existing methods are solved, and precise control of acupuncture depth and efficient experimentation are achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FIRST HOSPITAL AFFILIATED TO GENERAL HOSPITAL OF PLA
- Filing Date
- 2025-03-04
- Publication Date
- 2026-07-14
AI Technical Summary
Existing methods for creating animal models of chronic skeletal muscle injury lack specialized equipment, resulting in non-standardized operations, poor reproducibility, low efficiency, and difficulty in applying them to large-scale experiments.
A needle acupuncture device for chronic skeletal muscle injury is designed, comprising a accommodating cavity, an adjustment structure, a needle plate, and an array of sterile needles. The adjustment structure enables precise control of the needle depth and the distribution of the arrayed needles, ensuring the uniformity of the injury area.
It enables quantitative control of acupuncture depth and repeatability of operation, improves the standardization and efficiency of experiments, and is suitable for studying the cumulative effects of chronic injuries.
Smart Images
Figure CN224484211U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical device technology, and more specifically, to an acupuncture device for chronic skeletal muscle injury. Background Technology
[0002] Chronic skeletal muscle injury refers to persistent micro-damage to muscle tissue caused by prolonged mechanical loading, repetitive injury, or inflammatory stimulation, accompanied by limited repair capacity and progressive fibrosis. Unlike acute injuries, chronic skeletal muscle injury is often insidious, with mild early symptoms. However, as the damage accumulates, muscle function gradually declines, eventually leading to muscle atrophy and limited mobility. This type of injury is widespread among athletes, manual laborers, those with occupational strain, and the elderly. For example, athletes who engage in high-intensity training for extended periods are prone to tendinitis and iliotibial band syndrome, while workers who perform repetitive postures for long periods are prone to neck and shoulder muscle strain. Furthermore, chronic skeletal muscle injury is also significant in hereditary muscle diseases. For instance, patients with Duchenne Muscular Dystrophy (DMD) have a deficiency of dystrophin, leaving their muscle fibers in a chronically vulnerable state, ultimately leading to progressive muscle atrophy and fibrosis. In-depth research on chronic skeletal muscle injury is crucial for understanding muscle regeneration mechanisms, developing novel treatment strategies, and evaluating interventions. Stable and reproducible animal models are key to conducting such research.
[0003] Currently, animal models for chronic skeletal muscle injury mainly include chemical injury, mechanical injury, and genetic models. Chemical injury methods, which directly induce muscle fiber necrosis and inflammatory responses by injecting cytotoxic substances such as Notexin and Cardiotoxin, are suitable for acute injury studies. However, due to the extreme intensity of the injury process, they are difficult to simulate the gradual development of chronic injury. Mechanical injury methods, such as repeated eccentric contraction models, induce muscle fiber damage and inflammatory responses by electrically stimulating muscle contraction under passive stretching. However, this method easily causes pain in animals, and the degree of damage is difficult to standardize. Furthermore, while external force compression models can induce chronic muscle injury, the difficulty in precisely controlling the degree of damage leads to poor reproducibility between different experiments. Therefore, existing methods still have many limitations in simulating chronic skeletal muscle injury.
[0004] In recent years, research has shown that daily micro-multipuncture is a more suitable modeling method for chronic skeletal muscle injury. This method uses fine needles with a diameter of 150 μm to perform multiple daily acupuncture points in target muscle areas such as the tibialis anterior for two weeks to induce long-term microfiber damage and inflammatory responses. Studies have found that this method can effectively induce muscle fiber degeneration, inflammatory cell infiltration, and increased connective tissue deposition, maintaining a fibrotic state for a longer period. Compared with other modeling methods, this method is closer to the physiological and pathological characteristics of chronic skeletal muscle injury and avoids the toxic effects of chemical damage. However, current acupuncture modeling methods still have many shortcomings, mainly in the lack of specialized modeling equipment, resulting in low experimental stability and reproducibility. Most current experiments rely on manual operation, with researchers manually inserting needles into the muscle point by point. Due to the influence of the experimenter's experience and technique, the depth, frequency, and needle placement of injury are difficult to standardize. In addition, manual acupuncture can easily lead to uneven distribution of the injury area, affecting the consistency between experiments. Furthermore, daily manual operation is time-consuming and laborious, making it difficult to apply to large-scale experiments. Therefore, although existing studies have verified the effectiveness of acupuncture micro-trauma modeling, it still faces problems such as poor repeatability, low operational accuracy, and low efficiency, which seriously limit the promotion and application of this method. Utility Model Content
[0005] The purpose of this invention is to provide an acupuncture device for chronic skeletal muscle injury, which can quantify the acupuncture depth, improve the accuracy of operation, make the operation repeatable, and is low in cost and high in efficiency.
[0006] This utility model provides an acupuncture device for chronic skeletal muscle injury, including a accommodating cavity, an adjustment structure, an acupuncture substrate, and an array of sterile needles.
[0007] The needle-punched substrate is disposed within the accommodating cavity;
[0008] One end of the adjustment structure is connected to one side of the needle substrate, and the other end extends out of the accommodating cavity, for adjusting the position of the needle substrate within the accommodating cavity;
[0009] One end of the sterile needle is fixedly mounted on the acupuncture base plate, and the other end can extend out of the accommodating cavity through the needle outlet hole provided on the accommodating cavity.
[0010] In an optional embodiment, the adjusting structure includes an adjusting screw;
[0011] A retaining ring is provided on the side wall of one end of the adjusting screw, a positioning hole is provided on the needle-punched base plate, the end of the adjusting screw is disposed in the positioning hole, and the retaining ring is disposed at the end of the positioning hole;
[0012] The accommodating cavity has a threaded hole, and the adjusting screw is threadedly connected to the threaded hole.
[0013] In an optional embodiment, the outer end of the positioning hole has a recess, and the retaining ring is disposed in the recess.
[0014] In an optional embodiment, the adjustment structure further includes an elastic element;
[0015] One end of the elastic element is connected to the needle substrate, and the other end of the elastic element is fixed inside the accommodating cavity, which can apply a force to the needle substrate in the direction of the adjusting screw.
[0016] In an optional embodiment, there are multiple elastic elements, and the connection positions of the multiple elastic elements on the needle-punching substrate are symmetrically arranged with reference to the central symmetry plane of the needle-punching substrate.
[0017] In an optional embodiment, the elastic element is a compression spring.
[0018] In an optional embodiment, a locking nut is provided on the adjusting screw;
[0019] The locking nut is located outside the accommodating cavity.
[0020] In an optional embodiment, a guide strip is provided on the inner wall of the accommodating cavity, and the length direction of the guide strip is consistent with the moving direction of the needle-punched substrate;
[0021] The side end of the needle-punched substrate has a guide groove, and the guide strip is slidably disposed in the guide groove.
[0022] In an optional embodiment, a protective cap is provided at one end of the accommodating cavity having the needle outlet.
[0023] In an optional embodiment, the protective cover and the accommodating cavity are detachably or rotatably connected.
[0024] The beneficial effects of this utility model embodiment are:
[0025] By arranging sterile needles in an array on the acupuncture substrate, the damage density (needle spacing) and spatial distribution can be preset to form a uniform micro-damage area, which is suitable for studying the cumulative effect of chronic damage. By adjusting the structure to set the extension length of the sterile needles, the acupuncture depth can be quantified, improving the repeatability and accuracy of the operation. Attached Figure Description
[0026] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0027] Figure 1 A schematic diagram (perspective view) of the acupuncture device for chronic skeletal muscle injury provided in an embodiment of this utility model;
[0028] Figure 2 A perspective view of the accommodating cavity of the acupuncture device for chronic skeletal muscle injury provided in an embodiment of this utility model;
[0029] Figure 3 A schematic diagram of the acupuncture substrate of the acupuncture device for chronic skeletal muscle injury provided in this embodiment of the utility model;
[0030] Figure 4 A schematic diagram of the adjusting screw of the acupuncture device for chronic skeletal muscle injury provided in this embodiment of the present invention.
[0031] Icons: 1-Accommodation cavity; 2-Adjusting screw; 3-Needle-piercing substrate; 4-Sterile needle; 5-Compression spring; 6-Needle outlet hole; 7-Guide strip; 8-Threaded hole; 9-Guide groove; 10-Positioning hole; 11-Counter groove; 12-Retaining ring. Detailed Implementation
[0032] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0033] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0034] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0035] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They 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. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0036] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.
[0037] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0038] The following is combined with Figures 1-4 The following describes some embodiments of the present invention in detail. Unless otherwise specified, the following embodiments and features can be combined with each other.
[0039] This utility model provides an acupuncture device for chronic skeletal muscle injury, including a accommodating cavity 1, an adjustment structure, an acupuncture base plate 3, and an array of sterile needles 4; the acupuncture base plate 3 is disposed within the accommodating cavity 1; one end of the adjustment structure is connected to one side of the acupuncture base plate 3, and the other end extends out of the accommodating cavity 1, for adjusting the position of the acupuncture base plate 3 within the accommodating cavity 1; one end of the sterile needle 4 is fixedly disposed on the acupuncture base plate 3, and the other end can pass through a needle outlet hole 6 provided on the accommodating cavity 1 and extend out of the accommodating cavity 1.
[0040] In this embodiment, the accommodating cavity 1 is a hollow cuboid structure, and its internal space is used to accommodate the needle substrate 3 and the sterile needle 4. The bottom surface of the accommodating cavity 1 is provided with multiple needle outlet holes 6, which are arranged in an array for the sterile needle 4 to pass through. The diameter of the needle outlet holes 6 is slightly larger than the diameter of the sterile needle 4 to ensure that the sterile needle 4 can smoothly pass through the accommodating cavity 1.
[0041] Specifically, in this embodiment, the accommodating cavity 1 is made of transparent polycarbonate (PC) or medical-grade stainless steel, with a smooth and sterile inner wall; the needle outlet 6 is an array of round holes arranged in a rectangular matrix.
[0042] In this embodiment, the needle-piercing substrate 3 is disposed within the accommodating cavity 1, and has multiple fixing holes thereon, the distribution of which is consistent with the distribution of the needle outlet holes 6. One end of the sterile needle 4 is fixed to the needle-piercing substrate 3 through the fixing holes, and the other end can extend out of the accommodating cavity 1 through the needle outlet hole 6. The needle-piercing substrate 3 is made of aluminum alloy or high-strength medical-grade plastic, which has good corrosion resistance and biocompatibility.
[0043] In this embodiment, the sterile needle 4 is a disposable medical needle, one end of which is fixed in the fixing hole of the acupuncture substrate 3, and the other end can pass through the needle outlet 6. The length and diameter of the sterile needle 4 are selected according to experimental requirements to adapt to the construction requirements of different animal skeletal muscle injury models. The array distribution of the sterile needle 4 can be adjusted according to the experimental design to achieve acupuncture injuries with different densities and distribution patterns.
[0044] In this embodiment, the adjustment structure can adjust the length of the sterile needle 4 extending out of the needle hole 6, thereby enabling precise control of the needle insertion depth and meeting the requirements for the degree of skeletal muscle damage under different experimental conditions.
[0045] In use, first install the sterile needle 4 into the fixing hole of the needle-punching base plate 3. Then, according to the experimental requirements, adjust the position of the needle-punching base plate 3 by adjusting the structure so that the sterile needle 4 extends out of the receiving cavity 1 to the required depth. After the needle-punching operation is completed, reverse the operation of the adjusting structure to retract the needle-punching base plate 3 and the sterile needle 4 into the receiving cavity 1 to protect the needle tip and prevent accidental injury.
[0046] In an optional embodiment, the adjustment structure includes an adjustment screw 2; a retaining ring 12 is provided on the side wall of one end of the adjustment screw 2, a positioning hole 10 is provided on the needle-punched substrate 3, the end of the adjustment screw 2 is disposed in the positioning hole 10, and the retaining ring 12 is disposed at the end of the positioning hole 10; the accommodating cavity 1 has a threaded hole 8, and the adjustment screw 2 is threadedly connected to the threaded hole 8.
[0047] In this embodiment, the adjustment structure includes an adjustment screw 2. A retaining ring 12 is provided on the side wall of one end of the adjustment screw 2, and a positioning hole 10 is provided on the needle plate 3. The end of the adjustment screw 2 is inserted into the positioning hole 10, and the retaining ring 12 is provided at the end of the positioning hole 10 to limit the axial movement of the adjustment screw 2 and ensure a stable connection between the adjustment screw 2 and the needle plate 3. A threaded hole 8 is provided on the side wall of the accommodating cavity 1, and the adjustment screw 2 is connected to the threaded hole 8 through a thread. By rotating the adjustment screw 2, the needle plate 3 can be pushed to move axially within the accommodating cavity 1, thereby adjusting the length of the sterile needle 4 extending out of the needle outlet 6.
[0048] It is understood that in this embodiment, the adjustment structure is achieved by adjusting the screw 2 using the principle of a threaded screw. However, it is not limited to this structure. Other structures can also be used to achieve the adjustment function, such as a gear and rack rotation structure, a linkage transmission structure, etc. In other words, as long as the position of the needle substrate 3 can be adjusted, the needle extension length can be adjusted.
[0049] In an optional embodiment, the outer end of the positioning hole 10 has a recess 11, and the retaining ring 12 is disposed in the recess 11.
[0050] In this embodiment, the recess 11 allows the retaining ring 12 to be placed inside the recess 11, thereby enabling simultaneous positioning by the retaining ring 12 and the end of the adjusting screw 2, which increases the positioning stability between the adjusting screw 2 and the needle-punched substrate 3.
[0051] In this embodiment, to reduce wear, a bearing can be installed in the sink 11, and the retaining ring 12 is installed in the inner ring of the bearing, so that it can have a positioning function, reduce friction, and improve rotation efficiency.
[0052] In an optional embodiment, the adjustment structure further includes an elastic element; one end of the elastic element is connected to the needle substrate 3, and the other end of the elastic element is fixed inside the accommodating cavity 1, which can apply a force to the needle substrate 3 in the direction of the adjustment screw 2.
[0053] In this embodiment, when the adjusting screw 2 applies a force toward the needle outlet 6 to the needle-punching substrate 3, it can drive the sterile needle 4 through the needle outlet 6 and extend it out of the accommodating cavity 1; at the same time, it also applies a corresponding force to the elastic element, so that the elastic element stores energy.
[0054] When the adjusting screw 2 is adjusted in the opposite direction, that is, when the force applied to the needle plate 3 in the direction of the needle outlet 6 is removed, the elastic element releases the stored energy, that is, the elastic element resets, and applies a force to the needle plate 3 in the direction of the adjusting screw 2, so that the needle plate 3 moves away from the needle outlet 6, and drives the sterile needle 4 to retract from the needle outlet 6, and finally enter the accommodating cavity 1.
[0055] In an optional embodiment, there are multiple elastic elements, and the connection positions of the multiple elastic elements on the needle-punched substrate 3 are symmetrically arranged with reference to the central symmetry plane of the needle-punched substrate 3.
[0056] In this embodiment, the arrangement of multiple elastic elements enables the needle-punching substrate 3 to maintain balance whether it is driving the sterile needle 4 to extend out of the needle hole 6 or driving the needle-punching substrate 3 to retract the sterile needle 4 out of the needle hole 6.
[0057] In an optional embodiment, the elastic element is a compression spring 5.
[0058] In this embodiment, the elastic element is a compression spring 5. One end of the compression spring 5 abuts against the needle-punching substrate 3, and the other end is fixed inside the accommodating cavity 1. It has a needle outlet hole 6 at one end, which can apply a force to the needle-punching substrate 3 in a direction away from the needle outlet hole 6.
[0059] It is understood that in this embodiment, the elastic element is a compression spring 5, but it is not limited to compression spring 5. It can also be other types of elastic elements, such as tension springs, as long as they can apply a force to the needle-punched substrate 3 in the direction of the adjusting screw 2.
[0060] In an optional embodiment, a locking nut is provided on the adjusting screw 2; the locking nut is located outside the accommodating cavity 1.
[0061] In this embodiment, the locking nut ensures the positioning stability of the adjusting screw 2, preventing the adjusting screw 2 from shaking during use and causing changes in the extension length of the sterile needle 4, thus affecting the performance.
[0062] When in use, after adjusting the adjusting screw 2 to the appropriate position, the locking nut on the adjusting screw 2 is screwed toward the receiving cavity 1. After it fits against the outer surface of the receiving cavity 1, the adjusting screw 2 is locked.
[0063] It is understood that in this embodiment, the adjusting screw 2 is locked by a locking nut, but it is not limited to the locking nut alone. Other locking methods can also be used, such as clamping lock, pin lock, etc. In other words, as long as the adjusting screw 2 can be locked, it is acceptable.
[0064] In an optional embodiment, a guide strip 7 is provided on the inner wall of the accommodating cavity 1, and the length direction of the guide strip 7 is consistent with the moving direction of the needle-punched substrate 3; the side end of the needle-punched substrate 3 has a guide groove 9, and the guide strip 7 is slidably disposed in the guide groove 9.
[0065] In this embodiment, by setting a guide strip 7 on the inner wall of the accommodating cavity 1, the guide strip 7 and the guide groove 9 on the needle-punched substrate 3 are used to position the moving direction of the needle-punched substrate 3, thereby ensuring the stability and positional accuracy of the needle-punched substrate 3 when it moves.
[0066] In this embodiment, the shape of the guide strip 7 matches the shape of the guide groove 9. They can both be set as semi-circular, rectangular, frustum, etc., as long as the guide strip 7 and the guide groove 9 can cooperate to achieve the positioning of the needle-punched substrate 3.
[0067] It is understood that in this embodiment, a guide groove 9 may be provided on the inner wall of the accommodating cavity 1, and a matching guide protrusion may be provided at the end of the needle-punched substrate 3. Alternatively, both a guide groove 9 and a guide strip 7 may be provided on the inner wall of the accommodating cavity 1, and corresponding guide protrusions and guide grooves 9 may also be provided on the needle-punched substrate 3. In other words, as long as the positioning of the needle-punched substrate 3 can be achieved through the cooperation of the guide strip 7 and the guide groove 9, it is acceptable.
[0068] In an optional embodiment, a protective cap is provided at one end of the accommodating cavity 1 where the needle outlet 6 is located.
[0069] In this embodiment, to further improve the safety and convenience of use, a protective cap is specially designed on the end of the receiving cavity 1 with the needle outlet 6. The protective cap is designed to protect the sterile needle 4 from external contamination or damage when not in use, while preventing the operator from accidentally coming into contact with the protruding needle during use, thereby reducing the risk of accidental injury.
[0070] In an optional embodiment, the protective cover and the accommodating cavity 1 are detachably or rotatably connected.
[0071] In this embodiment, the protective cover is mounted on the receiving cavity 1 via a rotatable connection, specifically a hinge connection, allowing the protective cover to be easily opened and closed. When not in use, the protective cover remains tightly closed, ensuring the safety of the sterile needle 4 and reducing the impact of the external environment on the interior of the receiving cavity 1.
[0072] In this embodiment, the protective cover is made of transparent medical-grade plastic, which ensures its biocompatibility and allows the operator to observe the state of the sterile needle 4 without opening the protective cover.
[0073] The inner edge of the protective cover is designed with a sealing gasket. The sealing gasket is made of soft silicone material and can fit tightly with the end face of the needle outlet 6 of the accommodating cavity 1, further enhancing the sealing performance of the protective cover and preventing external impurities from entering the accommodating cavity 1.
[0074] Before performing the acupuncture procedure, the operator can open the protective cover by rotating it to expose the needle outlet 6 on the receiving cavity 1, adjust the sterile needle 4 to the required extension length, and place the skeletal muscle tissue of the experimental animal under the tip of the sterile needle 4 for the acupuncture procedure. After the procedure, the sterile needle 4 is retracted through the adjustment device, and the operator rotates the protective cover to close and lock it.
[0075] The beneficial effects of this utility model embodiment are:
[0076] The sterile needles 4 are arrayed on the acupuncture substrate 3, and the damage density (needle spacing) and spatial distribution can be preset to form a uniform micro-damage area, which is suitable for studying the cumulative effect of chronic damage. By adjusting the structure to set the extension length of the sterile needles 4, the acupuncture depth can be quantified, which improves the repeatability and accuracy of the operation.
[0077] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. An acupuncture device for chronic skeletal muscle injury, characterized in that, It includes a accommodating cavity, an adjustment structure, a needle-punching substrate, and an array of sterile needles. The needle-punched substrate is disposed within the accommodating cavity; One end of the adjustment structure is connected to one side of the needle substrate, and the other end extends out of the accommodating cavity, for adjusting the position of the needle substrate within the accommodating cavity; One end of the sterile needle is fixedly mounted on the acupuncture base plate, and the other end can extend out of the accommodating cavity through the needle outlet hole provided on the accommodating cavity.
2. The acupuncture device for chronic skeletal muscle injury according to claim 1, characterized in that, The adjustment structure includes an adjustment screw; A retaining ring is provided on the side wall of one end of the adjusting screw, a positioning hole is provided on the needle-punched base plate, the end of the adjusting screw is disposed in the positioning hole, and the retaining ring is disposed at the end of the positioning hole; The accommodating cavity has a threaded hole, and the adjusting screw is threadedly connected to the threaded hole.
3. The acupuncture device for chronic skeletal muscle injury according to claim 2, characterized in that, The outer end of the positioning hole has a groove, and the retaining ring is disposed in the groove.
4. The acupuncture device for chronic skeletal muscle injury according to claim 2, characterized in that, The adjustment structure also includes an elastic element; One end of the elastic element is connected to the needle substrate, and the other end of the elastic element is fixed inside the accommodating cavity, which can apply a force to the needle substrate in the direction of the adjusting screw.
5. The acupuncture device for chronic skeletal muscle injury according to claim 4, characterized in that, There are multiple elastic elements, and the connection positions of the multiple elastic elements on the needle-punching substrate are symmetrically arranged with reference to the central symmetry plane of the needle-punching substrate.
6. The acupuncture device for chronic skeletal muscle injury according to claim 4, characterized in that, The elastic element is a compression spring.
7. The acupuncture device for chronic skeletal muscle injury according to claim 2, characterized in that, A locking nut is provided on the adjusting screw; The locking nut is located outside the accommodating cavity.
8. The acupuncture device for chronic skeletal muscle injury according to claim 1, characterized in that, A guide bar is provided on the inner wall of the accommodating cavity, and the length direction of the guide bar is consistent with the moving direction of the needle-punched substrate; The side end of the needle-punched substrate has a guide groove, and the guide strip is slidably disposed in the guide groove.
9. The acupuncture device for chronic skeletal muscle injury according to claim 1, characterized in that, A protective cap is provided at one end of the accommodating cavity where the needle outlet is located.
10. The acupuncture device for chronic skeletal muscle injury according to claim 9, characterized in that, The protective cover and the accommodating cavity are detachably or rotatably connected.