Roller pin device for stimulating non-planar sites

Abstract

This utility model discloses a roller needle device for stimulating non-planar areas, relating to the field of medical device technology, including a needle handle and a needle head. The needle head has multiple needles of varying lengths from the midpoint of the roller to both ends, forming a concave or convex contour structure. The gradient direction can increase or decrease along the central axis on both sides. Through the synergistic effect of the longer needles preferentially contacting concave areas and the shorter needles conforming to convex areas, uniform roller needle stimulation of non-planar areas such as finger joints and Fengchi acupoints is achieved, solving the problem of insufficient adaptability of traditional roller needles. The needle head structure can be switched between concave and convex to adapt to different anatomical shapes; the needles can be configured as invasive microneedles or non-invasive round-headed cylinders to meet the needs of acupuncture stimulation or acupoint massage. This device combines the advantages of precise fit, dynamic adjustment of stimulation sites, and modular structure, significantly improving treatment uniformity, safety, and operational efficiency, and is suitable for multiple scenarios such as traditional Chinese medicine acupuncture, medical aesthetic microneedling, and sports rehabilitation.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to a roller needle device that can adapt to non-planar skin areas, and is particularly suitable for stimulating and caring for areas with uneven structures (such as finger joints, acupoints, etc.). Background Technology

[0002] Existing skin roller devices typically include a cylindrical roller and multiple needles. During rolling, the needles pierce the skin surface to stimulate collagen regeneration. For example, patent CN203379477U discloses a skin roller that stimulates collagen proliferation by piercing the epidermis with needles, promoting skin regeneration without removing the entire epidermis. This roller is convenient to use, minimally invasive, and carries a significantly lower risk than traditional epidermal removal methods. However, the exposed needle length of these existing rollers is usually uniform, making them suitable for stimulating flat areas of skin. For areas with uneven surfaces, concave or convex structures, such as finger joints and Fengchi acupoints, traditional flat rollers struggle to achieve adequate contact with the skin, resulting in poor stimulation and significant shortcomings. Therefore, it is necessary to provide a novel roller device to effectively address the problem of traditional rollers' inability to uniformly stimulate non-planar areas. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model proposes a roller needle device with a needle body gradient distribution structure, wherein the needles are arranged in a concave or convex shape to meet the skin stimulation needs of non-planar areas.

[0004] The technical solution of this utility model includes: a roller needle device for stimulating non-planar areas, comprising: a needle handle for the operator to hold; and a needle head disposed at one end of the needle handle, comprising multiple needle bodies, the length of which varies in a gradient along the arrangement direction to form a needle body distribution structure adapted to the contour of the non-planar area; the gradient-varying needle body distribution structure is configured such that, through the synergistic action of needle bodies of different lengths, when a longer needle body contacts a concave area, a shorter needle body simultaneously contacts a convex area, thereby achieving a uniform roller needle stimulation effect on the non-planar area; and the gradient change direction can increase or decrease from the center of the needle head towards both ends.

[0005] Preferably, the needle body has a non-invasive or invasive structure, with a length gradient from the center of the needle head to both ends, ranging from 0.2mm to 1.5mm. The needle body can utilize microneedles with sharp tips for minimally invasive insertion, or round-headed cylindrical objects for non-invasive massage stimulation. The needle spacing, density, and gradient can be set according to clinical needs. Through this design, the roller needle can better conform to non-planar skin areas, improving the uniformity and efficiency of stimulation.

[0006] Preferably, the length of the middle needle body of the needle head is less than the length of the needle bodies at both ends, and the gradient change direction increases from the center of the needle head to both sides, forming a concave needle head structure. The length of the central needle body is 0.5mm, and the lengths of the needle bodies at both ends are 0.6mm, 0.7mm, 0.8mm, and 0.9mm respectively from the inside to the outside.

[0007] Preferably, the length of the middle needle body of the needle head is greater than the length of the needle bodies at both ends, and the gradient change direction is decreasing from the center of the needle head to both ends, forming a convex needle head structure. The length of the central needle body is 0.9mm, and the lengths of the needle bodies on both sides are 0.8mm, 0.7mm, 0.6mm, and 0.5mm respectively from the inside to the outside.

[0008] Preferably, the arrangement order and length gradient configuration of the needles are suitable for the protruding parts of the human finger joints or the concave parts of the Fengchi acupoint, so as to achieve directional and uniform stimulation of special anatomical structures.

[0009] Preferably, the needle body is made of plastic, stainless steel, or natural materials, and its surface is treated with an antibacterial coating.

[0010] Preferably, the needle head further includes a roller, and the upper end of the needle shank is provided with a U-shaped clamping seat. The U-shaped clamping seat is provided with a rotating shaft connecting the two ends of the U-shaped clamping seat, and the roller is movably mounted on the rotating shaft.

[0011] Preferably, the needle body is arranged in a sheet shape on the roller, and the needle body is provided with 3-11 sheets.

[0012] Compared with the prior art, the present invention achieves the following beneficial technical effects:

[0013] This invention utilizes a gradient-distributed needle length structure to create a concave or convex needle tip, which better conforms to concave or convex skin areas, simultaneously increasing the stimulation area and significantly improving the local stimulation effect. The needle tip shape can be selected as concave or convex according to needs, making it widely applicable and suitable for various body parts (such as Fengchi acupoint, finger joints, etc.).

[0014] This invention employs a gradient-distributed needle length structure, which allows the needle tip to form a concave or convex geometric contour. This enables it to better fit concave or convex non-planar parts of the human body, overcoming the limitation of traditional roller needles which are only suitable for flat areas, and achieving precise adaptation to complex skin contours.

[0015] The gradient needle arrangement of this invention can effectively coordinate the contact depth and distribution density of needles of different lengths during the rolling process. When the longer needle enters the concave area, the shorter needle acts simultaneously on the convex area, thereby ensuring that the overall stimulation intensity is balanced and reasonably distributed, greatly improving the uniformity and comfort of the treatment effect, and increasing the uniformity of stimulation and treatment efficiency.

[0016] This invention provides two needle structures: concave and convex. Users can flexibly select or replace the needle components according to the characteristics of the target area. The needle body can use a pointed microneedle to achieve minimally invasive skin stimulation and promote collagen regeneration, or a round-headed cylindrical structure for non-invasive massage and relaxation. It is suitable for different treatment goals and patient tolerance levels, effectively broadening the application scenarios. It enables customized treatment for different areas, enhancing the versatility and clinical practical value of the device. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the first embodiment of a needle roller device for stimulating non-planar areas.

[0018] Figure 2 This is a schematic diagram of the structure of the first embodiment of the needle head.

[0019] Figure 3 This is a front view of the first embodiment of the needle head.

[0020] Figure 4 This is a schematic diagram of the second embodiment of the needle roller device for stimulating non-planar areas.

[0021] Figure 5 This is a schematic diagram of the structure of the second embodiment of the needle head.

[0022] Figure 6 This is a front view of the second embodiment of the needle head.

[0023] In the diagram: 1-Needle handle, 2-Needle head, 3-Needle body, 4-Roller, 5-U-shaped clamp, 6-Spindle. Detailed Implementation

[0024] The present invention will be further explained below with reference to the accompanying drawings and embodiments.

[0025] Reference Figures 1-6 As shown, a roller needle device for stimulating non-planar areas includes: a needle handle 1 for the operator to hold; and a needle head 2 disposed at one end of the needle handle 1, comprising a plurality of needle bodies 3, the length of which varies in a gradient from the midpoint of the roller to both ends along the arrangement direction, forming a needle body distribution structure adapted to the contour of the non-planar area; the gradient needle body distribution structure is configured such that, through the synergistic action of needle bodies of different lengths, when a longer needle body contacts a concave area, a shorter needle body simultaneously contacts a convex area, thereby achieving a uniform roller needle stimulation effect on the non-planar area; and the gradient change direction can increase or decrease from the center of the needle head to both ends.

[0026] The needle head 2 also includes a roller 4, and a U-shaped clamping seat 5 is provided at the upper end of the needle handle 1. The two ends of the rotating shaft 6 are respectively movably connected to the inner sides of the U-shaped clamping seat 5. The roller 4 is movably mounted on the rotating shaft 6, allowing the needle head 2 to rotate freely relative to the needle handle 1. The needle body 3 is plate-shaped and mounted on the roller 4, with 3-11 plates, preferably 9 plates.

[0027] Reference Figure 1-3 As shown, in this embodiment, the needle head 2 has a concave structure, and the length of the needle body 3 gradually decreases from the center of the needle head assembly to both ends. Figure 1 As shown, the needle body 3 at the center of the needle head 2 is the longest, while the needle bodies 3 on both sides gradually shorten, making the outer surface of the needle head assembly concave overall. Thus, when the concave roller needle rolls on the skin surface, the longer central needle body 3 can penetrate deep into the concave area (such as the Fengchi acupoint) for stimulation, while the shorter needle bodies 3 on both sides simultaneously contact the surrounding flat areas, avoiding only piercing the high points and being ineffective. The needle body 3 of the needle head assembly 2 can be a sharp, conical metal needle (microneedle) or other needles capable of piercing the skin to create tiny punctures on the skin surface, promoting self-healing and collagen proliferation in the dermis. To improve safety and comfort, non-invasive needle bodies 3, such as round-tipped micropillars, can also be used for massage stimulation of the surface skin. The needle body 3 is preferably made of materials such as plastic, stainless steel, or natural materials, and the surface can be further coated with antibacterial or active substances. The height of the needle body 3 is in the range of approximately 0.1 to 3 mm, which can stimulate the dermis without damaging deeper tissues. In this embodiment, the concave needle structure is particularly suitable for stimulating concave areas such as Fengchi acupoint: when rolling near Fengchi acupoint, the longer needle body 3 in the middle penetrates deep to stimulate the acupoint, while the shorter needle bodies 3 on both sides simultaneously contact the planar area around Fengchi, producing a concentrated and effective stimulation effect on the tissues around the acupoint.

[0028] By employing a gradient-distributed needle arrangement (concave or convex), the needle tip actively matches the curvature changes of the skin surface. In a concave needle, the central long needle (0.9 mm) penetrates deep into the concave area (such as the Fengchi acupoint), while the two short needles (0.5-0.8 mm) conform to the surrounding flat areas. In a convex needle, the central short needle (0.5 mm) avoids the raised high points (such as the tips of finger joints), while the outer long needles (0.6-0.9 mm) cover the adjacent transitional areas. This graded pressure mechanism overcomes the two-dimensional stimulation limitations of traditional planar roller needles, enabling three-dimensional, uniform stimulation for complex anatomical morphologies. Clinical tests show an effective improvement in stimulation coverage.

[0029] Traditional roller needles, due to their uniform needle length, are prone to over-insertion (in raised areas) or insufficient contact (in recessed areas) when rolling over non-planar regions. This invention utilizes a gradient length structure to dynamically adapt the needles to the undulations of the skin surface: longer needles preferentially contact recessed areas to compensate for depth differences, while shorter needles conform to raised areas to avoid excessive pressure. This allows for intelligent adjustment of the stimulation site during a single roll, effectively reducing subcutaneous tissue damage (such as bruising and epidermal tearing) while avoiding stimulation blind spots.

[0030] The concave and convex needles can be quickly switched to target concave / convex areas. For example, the concave type is suitable for Fengchi and Yongquan acupoints, while the convex type is suitable for finger joints, elbow tips, etc., covering the needs of multiple fields such as traditional Chinese medicine acupoint treatment and sports rehabilitation.

[0031] Reference Figure 4-6 As shown, in another embodiment, the needle assembly 2 has a convex structure. The length of the needle body 3 gradually increases from the center of the needle head 2 outwards, forming a convex roller needle appearance that is slightly shorter in the center and longer at the edges. Other structures of the needle assembly 2 are similar to... Figure 1 Similar to the embodiment, the convex structure allows the shorter central needle body 3 to fit the raised areas of the skin (such as the tips of finger joints), while the longer peripheral needle bodies 3 cover the relatively high points on both sides of the joint. When the convex roller is rolled in the finger joint area, the central needle body 3 of the needle tip assembly 2 fits against the tip of the joint, and the peripheral needle bodies 3 contact and stimulate the sides of the joint, achieving comprehensive stimulation of the joint area. The material and height of the needle body 3 are the same as in the aforementioned concave embodiment, and the height range is also 0.1–3 mm. The convex needle tip is suitable for treating annular, spherical, or other arc-shaped raised areas.

[0032] The needle body 3 shapes of the two needle structures described above can be interchanged or combined as needed, and can be used with materials of different hardness to achieve different stimulation intensities. Furthermore, the needle assembly 2 can be designed as a detachable structure, allowing users to replace needle assemblies of different shapes or needle bodies according to treatment needs. During use, the roller needle device is manually rolled by the handle 1, and the needle assembly 2 rotates freely in the U-shaped clamp 5, thereby causing the needle body 3 to continuously roll on the skin, forming dense micro-punctures or massage stimulation pathways.

[0033] In summary, this invention, through the design of concave and convex roller needle structures and a gradient needle distribution, can provide uniform and effective stimulation to non-planar skin areas (such as acupoints and joints). Furthermore, the selectable needle shapes and materials allow for both invasive and non-invasive functions, meeting diverse clinical needs and achieving highly efficient and safe therapeutic effects.

[0034] In the description of this utility model, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and 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. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" 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; they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0035] It should be noted that in this invention, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0036] The above description is merely a specific embodiment of the present invention, enabling those skilled in the art to understand or implement the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features of the present invention.

Claims

1. A roller pin device for stimulating a non-planar site, comprising: The needle handle (1) is for the operator to hold; and the needle head (2) is disposed at one end of the needle handle (1) and includes a plurality of needle bodies (3). The needle body (3) is characterized in that the length of the needle body (3) varies in a gradient from the midpoint of the roller to both ends along the arrangement direction, forming a needle body distribution structure that adapts to the contour of the non-planar part; the gradient-changing needle body distribution structure is configured such that when the longer needle body contacts the concave area, the shorter needle body simultaneously contacts the convex area, thereby achieving a uniform rolling puncture stimulation effect in the non-planar part; and the gradient change direction can increase or decrease from the midpoint of the roller of the needle head to both sides.

2. A roller pin device for stimulating a non-planar site according to claim 1, wherein, The needle body is a non-invasive or invasive structure. The length of the needle body (3) varies in a gradient from the center of the needle head (2) to both ends, and its length ranges from 0.2mm to 1.5mm.

3. A roller pin device for stimulating a non-planar site according to claim 2, wherein, The length of the middle needle body (3) of the needle head (2) is less than the length of the two needle bodies (3) at both ends. The gradient change direction is from the center of the needle head (2) to both sides, forming a concave needle head structure. The length of the central needle body is 0.5mm, and the lengths of the two needle bodies at both ends are 0.6mm, 0.7mm, 0.8mm, and 0.9mm respectively from the inside to the outside.

4. The roller pin device for stimulating a non-planar site of claim 2, wherein, The length of the middle needle body (3) of the needle head (2) is greater than the length of the two needle bodies (3) at both ends. The gradient change direction is decreasing from the center of the needle head to both sides, forming a convex needle head structure. The length of the central needle body (3) is 0.9 mm, and the lengths of the two needle bodies from the inside to the outside are 0.8 mm, 0.7 mm, 0.6 mm, and 0.5 mm respectively.

5. A roller pin device for stimulating a non-planar site according to any one of claims 1-4, wherein, The arrangement order and length gradient configuration of the needle body (3) are suitable for the protruding parts of the human finger joints or the concave parts of the Fengchi acupoint, so as to achieve directional and uniform stimulation of the anatomical structure.

6. The roller pin device for stimulating a non-planar site of claim 1, wherein, The needle body is made of plastic or stainless steel and its surface is treated with an antibacterial coating.

7. The roller pin device for stimulating a non-planar site of claim 1, wherein: The needle head (2) also includes a roller (4), and the upper end of the needle handle (1) is provided with a U-shaped clamp (5). The U-shaped clamp (5) is provided with a rotating shaft (6) connecting the two ends of the U-shaped clamp (5). The roller (4) is movably mounted on the rotating shaft (6).

8. The needle roller device for stimulating non-planar areas according to claim 7, characterized in that: The needle body (3) is arranged in a sheet shape on the roller (4).

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