Skin roller pin

Abstract

The utility model discloses a skin needle roller, which belongs to the technical field of medical instruments and comprises a handle, a support, a roller component and a rotating shaft, the support is fixed at the lower end of the handle, the rotating shaft is mounted on the support and rotatably connected with the support, and the roller component is sleeved on the rotating shaft. The rolling wheel assembly comprises a left needle base, a plurality of middle needle bases, a right needle base and a plurality of sets of rolling needle assemblies, and the left needle base, the multiple middle needle bases and the right needle base are sequentially connected in the axial direction. The needle roller assemblies are arranged between the left needle base and the middle needle base on the leftmost side, between every two adjacent middle needle bases and between the middle needle base on the rightmost side and the right needle base respectively. The roller pin assembly comprises a plurality of roller pins and a roller pin fixing plate, and the roller pins and the roller pin fixing plate are fixedly and integrally connected. The skin needle roller structure can ensure the connection strength of the needle roller, reduce skin wounds and avoid scratching tissues, and achieves the technical effects of firm and reliable connection of the needle roller and minimally invasive and safe clinical operation.

Description

Technical Field

[0001] This utility model relates to a skin roller needle, belonging to the field of medical device technology. Background Technology

[0002] In the field of medical aesthetics and skin treatment, skin rollers, as a commonly used tool in microneedling therapy, have been widely applied in clinical settings such as skin texture improvement, scar fading, and enhancing skin absorption capacity. The core principle involves using the handle to operate a roller equipped with microneedles. As the roller rolls across the skin's surface, the microneedles stimulate the skin tissue through a pricking action, thereby triggering the skin's self-repair mechanism and achieving corresponding therapeutic and cosmetic effects.

[0003] Currently, the most common skin rollers on the market are assembled using two main structural forms: The first type uses glue to bond the roller fixing plate to the roller to form the roller assembly. The rollers in this type are mostly cylindrical steel needles with sharp corners. Although the cylindrical sharp corner design can reduce skin wounds, the connection strength between the roller and the roller fixing plate is low because they rely on glue. This can easily lead to the risk of the roller loosening during use, affecting operational safety and service life. The second type uses a stamping process to stamp steel sheets into sharp angles, and then assembles the roller assembly by using two layers of needle seats to sandwich a stamped steel sheet. However, in this structure, the rollers are actually sharp corners formed by stamping steel sheets. The sharp edges of these corners can easily scratch the skin tissue during clinical operation, resulting in larger wounds on the skin surface, increasing patient discomfort and postoperative recovery difficulty.

[0004] Existing skin rollers struggle to balance connection strength with minimally invasive clinical procedures and safety, exhibiting issues such as insufficient structural stability or significant invasiveness, and require further improvement. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a skin roller needle structure that can simultaneously ensure the connection strength of the roller needle, reduce skin wounds and avoid scratching tissue, so as to achieve the technical effect of firm and reliable roller needle connection and minimally invasive and safe clinical operation.

[0006] The technical solution adopted by this utility model to solve its existing problems is:

[0007] A skin roller includes a handle, a support, a roller assembly, and a rotating shaft. The support is fixed to the lower end of the handle, and the rotating shaft is mounted on the support and rotatably connected to the support. The roller assembly is sleeved on the rotating shaft and is fixedly connected to the rotating shaft. The roller assembly includes a left needle seat, multiple intermediate needle seats, a right needle seat, and multiple sets of roller assemblies. The left needle seat, multiple intermediate needle seats, and right needle seats are connected sequentially along the axial direction, and the roller assemblies are respectively disposed between the left needle seat and the leftmost intermediate needle seat, between two adjacent intermediate needle seats, and between the rightmost intermediate needle seat and the right needle seat.

[0008] The needle roller assembly includes a plurality of needle rollers and a needle roller fixing plate. The plurality of needle rollers are evenly distributed on the needle roller fixing plate around their circumference, and the needle rollers are fixedly connected to the needle roller fixing plate as a whole.

[0009] Preferably, a first groove is formed on one side end face of the left needle seat, and a first flange is formed around the outer periphery of the first groove. A plurality of first flange grooves are uniformly formed on the first flange along its circumferential direction, and the bottom surface of the first flange groove is flush with the end face of the first groove.

[0010] Preferably, a second groove is formed on one side end face of the intermediate needle seat, and a second flange groove is formed around the outer periphery of the second groove. A plurality of second flange grooves are evenly formed on the second flange groove along its circumferential direction, and the bottom surface of the second flange groove is flush with the end face of the second groove.

[0011] Preferably, the first flange of the left needle seat abuts against the other side of the leftmost middle needle seat, the second flange groove of the middle needle seat abuts against the other side of the adjacent middle needle seat, and the second flange groove of the rightmost middle needle seat abuts against the end face of the right needle seat.

[0012] Preferably, the side of the needle roller fixing plate without the needle roller abuts against the end face of the first groove, the tip of the needle roller passes through the first flange groove and protrudes from the surface of the roller assembly, and the total thickness of the needle roller and the needle roller fixing plate is equal to the depth of the first flange groove.

[0013] Preferably, the side surface of the needle roller fixing plate without the needle roller abuts against the end face of the second groove, the tip of the needle roller passes through the second flange groove and protrudes from the surface of the roller assembly, and the total thickness of the needle roller and the needle roller fixing plate is equal to the depth of the second flange groove.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] Improved connection strength and prevention of steel needle loosening: In this application, the roller needle and the roller needle fixing plate are welded to form an integral structure, which replaces the connection method in the prior art. This significantly improves the connection strength between the roller needle and the roller needle fixing plate, fundamentally solves the problem of easy loosening of steel needles during use, extends the service life of the product, and ensures operational stability.

[0016] Achieving minimally invasive procedures and avoiding tissue abrasion: The roller needle of this application adopts a cylindrical pointed corner design, replacing the sharp angle structure formed by the existing stamped steel sheet. During clinical operation, the cylindrical pointed corner can stimulate the skin through a point-pricking method, effectively reducing the skin wound. At the same time, it avoids the abrasion of skin tissue by sharp corners, reducing patient discomfort and postoperative recovery risks, and improving operation safety.

[0017] The structure is stable and reliable with precise positioning: This application adopts an assembly structure of "two needle seats sandwiching a roller assembly". The left needle seat, the middle needle seat and the right needle seat are connected and clamped along the axial direction. The axial movement of the roller assembly is restricted by the abutment relationship between the needle seats. At the same time, the groove on the needle seat flange cooperates with the roller to restrict the circumferential rotation of the roller assembly. The double positioning structure ensures the positional stability of the roller assembly during rolling, avoids operation deviation caused by shaking, and further guarantees the clinical operation effect. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of a skin roller needle structure according to the present invention;

[0019] Figure 2 This is a partial cross-sectional front view of a skin roller according to the present invention;

[0020] Figure 3 This is a magnified view of part A in the partial cross-sectional main view of a skin roller of this utility model;

[0021] Figure 4 This is a schematic diagram of the left needle seat structure of a skin roller according to the present invention;

[0022] Figure 5 This is a schematic diagram of the intermediate needle seat structure of a skin roller according to the present invention;

[0023] Figure 6 This is a schematic diagram of the roller assembly structure of a skin roller according to the present invention;

[0024] Figure 7 This is a schematic diagram of the right needle seat structure of a skin roller according to the present invention.

[0025] In the diagram: 1. Handle; 2. Bracket; 3. Roller assembly; 301. Left needle seat; 30101. First flange; 30102. First flange groove; 30103. First through hole; 30104. First groove; 302. Middle needle seat; 30201. Second flange; 30202. Second flange groove; 30203. Second through hole; 30204. Second groove; 303. Needle roller assembly; 30301. Needle roller; 30302. Needle roller fixing plate; 30303. Third through hole; 304. Right needle seat; 30401. Fourth through hole; 4. Locking nut; 5. Shaft; 501. Shoulder. Detailed Implementation

[0026] This specification and claims do not distinguish components by differences in name, but by differences in function. In the description of this utility model, it should be understood that terms such as "upper," "lower," "front," "rear," "left," "right," and "horizontal," indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used 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. In this utility model, unless otherwise expressly specified and limited, terms such as "installed," "connected," "joined," and "fixed" should be interpreted broadly. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0027] like Figures 1-7 The illustrated skin roller includes a handle 1, a support 2, a roller assembly 3, and a rotating shaft 5. The support 2 is fixed to the lower end of the handle 1, and the rotating shaft 5 is mounted on the support 2 and rotatably connected to the support 2. The roller assembly 3 is sleeved on the rotating shaft 5 and is fixedly connected to the rotating shaft 5. The roller assembly 3 includes a left needle seat 301, multiple intermediate needle seats 302, a right needle seat 304, and multiple sets of roller assemblies 303. The multiple intermediate needle seats 302 are disposed between the left needle seat 301 and the right needle seat 304. The left needle seat 301, the multiple intermediate needle seats 302, and the right needle seat 304 are sequentially connected along the axial direction, and the roller assemblies 303 are respectively disposed between the left needle seat 301 and the leftmost intermediate needle seat 302. Between, between two adjacent intermediate needle holders 302, and between the rightmost intermediate needle holder 302 and the right needle holder 304, the needle roller assembly 303 includes a plurality of needle rollers 30301 and a needle roller fixing plate 30302. The plurality of needle rollers 30301 are evenly distributed on the needle roller fixing plate 30302, and the needle rollers 30301 and the needle roller fixing plate 30302 are fixedly connected together.

[0028] The roller needle 30301 and the roller needle fixing plate 30302 are welded together to form an integral structure. After the roller needle 30301 and the roller needle fixing plate 30302 are welded and fixed, they are then assembled with the left needle seat 301, the middle needle seat 302 and the right needle seat 304. In this way, the connection strength of the roller needle 30301 is guaranteed by welding, and the exposed cylindrical sharp corner design of the roller needle 30301 can reduce skin wounds and avoid tissue scratching during clinical operation.

[0029] One end of the rotating shaft 5 is provided with a shoulder 501, which abuts against one side of the bracket 2. The other end of the rotating shaft 5 is equipped with a locking nut 4, which abuts against the other side of the bracket 2, thus restricting the axial movement of the rotating shaft 5. The rotating shaft 5 and the bracket 2 are rotatably connected by a bearing.

[0030] The left needle seat 301, multiple intermediate needle seats 302, and right needle seat 304 are fixedly connected to the rotating shaft 5. The fixed connection between the left needle seat 301, multiple intermediate needle seats 302, and right needle seat 304 and the rotating shaft 5 can be achieved by bolts or by welding. The left needle seat 301, intermediate needle seats 302, and right needle seat 304 have the same diameter.

[0031] The left needle holder 301 has a first through hole 30103 adapted to the rotating shaft 5, the middle needle holder 302 has a second through hole 30203 adapted to the rotating shaft 5, the right needle holder 304 has a fourth through hole 30401 adapted to the rotating shaft 5, and the needle roller fixing plate 30302 has a third through hole 30303 adapted to the rotating shaft 5. The left needle holder 301, the middle needle holder 302, the right needle holder 304, and the needle roller fixing plate 30302 are all sleeved on the rotating shaft 5, and the first through hole 30103, the second through hole 30203, the third through hole 30303, and the fourth through hole 30401 all abut against the rotating shaft 5.

[0032] The left needle seat 301 has a first groove 30104 on one side end face. A first flange 30101 is formed around the outer periphery of the first groove 30104. A plurality of first flange grooves 30102 are evenly formed on the first flange 30101 along its circumferential direction. The bottom surface of the first flange groove 30102 is flush with the end face of the first groove 30104.

[0033] The intermediate needle seat 302 has a second groove 30204 on one side end face. A second flange 30201 is formed around the second groove 30204 on the outer periphery. A plurality of second flange grooves 30202 are evenly formed on the second flange 30201 along its circumferential direction. The bottom surface of the second flange groove 30202 is flush with the end face of the second groove 30204.

[0034] The first groove 30104 and the second groove 30204 have the same size, the first flange 30101 and the second flange 30201 have the same size, and the first flange groove 30102 and the second flange groove 30202 have the same size.

[0035] The other end face of the left needle seat 301 is a smooth plane, the other end face of the middle needle seat 302 is a smooth plane, the first flange 30101 of the left needle seat 301 abuts against the other side of the leftmost middle needle seat 302, the second flange 30201 of the middle needle seat 302 abuts against the other side of the adjacent middle needle seat 302, and the second flange 30201 of the rightmost middle needle seat 302 abuts against the end face of the right needle seat 304.

[0036] Between the left needle holder 301 and the leftmost middle needle holder 302, the side surface of the needle roller fixing plate 30302 without the needle roller 30301 abuts against the end face of the first groove 30104, and the needle roller 30301 abuts against the other end face of the adjacent middle needle holder 302. The tip of the needle roller 30301 passes through the first flange groove 30102 and protrudes from the surface of the roller assembly 3. The total thickness of the needle roller 30301 and the needle roller fixing plate 30302 is equal to the depth of the first flange groove 30102.

[0037] Between two adjacent intermediate needle holders 302, the side surface of the needle roller fixing plate 30302 without the needle roller 30301 abuts against the end face of the second groove 30204, and the needle roller 30301 abuts against the other end face of the adjacent intermediate needle holder 302. The tip of the needle roller 30301 passes through the second flange groove 30202 and protrudes from the surface of the roller assembly 3. The total thickness of the needle roller 30301 and the needle roller fixing plate 30302 is equal to the depth of the second flange groove 30202.

[0038] Between the rightmost middle needle holder 302 and the right needle holder 304, the side surface of the needle roller fixing plate 30302 without the needle roller 30301 abuts against the end face of the second groove 30204, and the needle roller 30301 abuts against the end face of the right needle holder 304.

[0039] The first flange groove 30102 and the second flange groove 30202 restrict the circumferential rotation of the needle roller assembly 303. The contact between the left needle seat 301 and the leftmost middle needle seat 302, the contact between the adjacent middle needle seat 302, and the contact between the rightmost middle needle seat 302 and the right needle seat 304 restrict the axial movement of the needle roller assembly 303.

[0040] In application, the handle 1 is held and the roller assembly 3 is rolled on the skin. The roller needle 30301 stimulates the skin through a point-pricking method for treatment. The assembly adopts a structure of "two needle seats sandwiching one roller assembly": the roller assembly 303 is sandwiched between the left needle seat 301 and the leftmost middle needle seat 302, between adjacent middle needle seats 302, and between the rightmost middle needle seat 302 and the right needle seat 304. This structure forms a complete roller assembly 3. The welding structure between the roller needle 30301 and the roller needle fixing plate 30302 ensures that the roller needle 30301 is firmly connected, and the exposed cylindrical tip of the roller needle 30301 ensures the safety and minimal invasiveness of clinical operation.

[0041] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A skin roller, comprising a handle (1), a bracket (2), a roller assembly (3), and a rotating shaft (5), wherein the bracket (2) is fixed to the lower end of the handle (1), the rotating shaft (5) is mounted on the bracket (2) and rotatably connected to the bracket (2), the roller assembly (3) is sleeved on the rotating shaft (5) and fixedly connected to the rotating shaft (5), characterized in that: The roller assembly (3) includes a left needle seat (301), a plurality of intermediate needle seats (302), a right needle seat (304), and a plurality of roller assemblies (303). The left needle seat (301), the plurality of intermediate needle seats (302), and the right needle seat (304) are connected sequentially along the axial direction. The roller assemblies (303) are respectively disposed between the left needle seat (301) and the leftmost intermediate needle seat (302), between two adjacent intermediate needle seats (302), and between the rightmost intermediate needle seat (302) and the right needle seat (304). The needle roller assembly (303) includes a plurality of needle rollers (30301) and a needle roller fixing plate (30302). The plurality of needle rollers (30301) are evenly distributed on the circumference of the needle roller fixing plate (30302), and the needle rollers (30301) and the needle roller fixing plate (30302) are fixedly connected together.

2. The skin roller needle according to claim 1, characterized in that: The left needle seat (301) has a first groove (30104) on one side end face. A first flange (30101) is formed around the outer periphery of the first groove (30104). A plurality of first flange grooves (30102) are evenly formed on the first flange (30101) along its circumferential direction. The bottom surface of the first flange groove (30102) is flush with the end face of the first groove (30104).

3. The skin roller according to claim 2, characterized in that: The intermediate needle seat (302) has a second groove (30204) on one end face. A second flange (30201) is formed around the second groove (30204) on the outer periphery. A plurality of second flange grooves (30202) are evenly provided on the second flange (30201) along its circumferential direction. The bottom surface of the second flange groove (30202) is flush with the end face of the second groove (30204).

4. The skin roller needle according to claim 3, characterized in that: The first flange (30101) of the left needle seat (301) abuts against the other side of the leftmost middle needle seat (302), the second flange (30201) of the middle needle seat (302) abuts against the other side of the adjacent middle needle seat (302), and the second flange (30201) of the rightmost middle needle seat (302) abuts against the end face of the right needle seat (304).

5. The skin roller according to claim 4, characterized in that: The side surface of the needle roller fixing plate (30302) without the needle roller (30301) abuts against the end face of the first groove (30104). The tip of the needle roller (30301) passes through the first flange groove (30102) and protrudes from the surface of the roller assembly (3). The total thickness of the needle roller (30301) and the needle roller fixing plate (30302) is equal to the depth of the first flange groove (30102).

6. The skin roller according to claim 5, characterized in that: The side surface of the needle roller fixing plate (30302) without the needle roller (30301) abuts against the end face of the second groove (30204). The tip of the needle roller (30301) passes through the second flange groove (30202) and protrudes from the surface of the roller assembly (3). The total thickness of the needle roller (30301) and the needle roller fixing plate (30302) is equal to the depth of the second flange groove (30202).

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