An adjustable depth skin roller

Abstract

The application provides an adjustable depth skin roller needle, and relates to the technical field of medical devices, and solves the technical problem that the existing roller needle is inconvenient to adjust the penetration depth and causes great damage to the skin. The application comprises a rotating shaft and a roller needle cylinder rotatably arranged on the rotating shaft, a plurality of groups of roller needles are telescopically arranged on the roller needle cylinder, a pressure roller is further connected to the rotating shaft, the pressure roller is embedded in the roller needle cylinder, a pressure plate is telescopically arranged on the pressure roller, and the pressure plate is used to control the telescopic movement of the roller needles. The application can reduce the damage of the roller needle to the skin while adjusting the penetration depth of the roller needle into the skin.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and more specifically, to an adjustable depth skin roller. Background Technology

[0002] The medical and beauty industries are now dedicated to how to deliver medications correctly and efficiently to the treatment site. With the development of technology, a microneedling method is now commonly used. This method uses roller microneedles to puncture the skin. In a short period of time, the microneedles can create thousands of micro-delivery channels on the skin surface, allowing beauty nutrients or drug ingredients to penetrate directly into the deep layers of the skin. The absorption effect of the product is more than 4,000 times that of ordinary topical products.

[0003] While current skin rollers can successfully pierce the epidermis, they cannot guarantee stable pressure during the rolling motion. This is especially true when rolling the roller in longitudinal, transverse, and 45-degree directions. Controlling the speed during rolling is difficult, resulting in inconsistent pressure and uneven penetration depth. This leads to inconsistent drug or cosmetic product penetration and may even puncture the dermis, damaging subcutaneous tissue.

[0004] Therefore, a skin roller needle, as proposed in patent CN208260010U, controls the length of the exposed needle by using a telescopic slide plate and a cleaning sponge to control the depth of insertion into the skin, ensuring that the inserted needle tip remains clean. This device controls the insertion depth of the roller needle not by making extension or other improvements, but by limiting its depth through a limit switch. While this effectively prevents the roller needle from penetrating too deeply, it is actually more difficult to penetrate sufficiently deep into certain areas of the skin, such as the side of the nose. Furthermore, during the rolling process, the angle between the roller needle handle and the skin needs to be adjusted in real time due to factors such as the doctor's habits, the patient's lying position, the degree of neck elevation, and the patient's face shape. The roller needle itself rotates on the roller and does not require further adjustment, but the slide plate that limits the roller needle also needs to rotate accordingly, which is inconvenient.

[0005] Moreover, compared to microneedles that pierce a small area of ​​skin vertically in a single puncture, the advantage of roller needles lies in their ability to efficiently create delivery channels through rolling punctures. However, compared to the vertical puncture of microneedles, the rolling puncture of roller needles creates an angle with the skin when the roller needle contacts and leaves the skin. The insertion and withdrawal of the roller needle are not perpendicular, resulting in a cone-shaped puncture site. The puncture site is also larger than that created by microneedles, causing a greater degree of skin damage. Furthermore, the angle formed between the roller needle and the skin is determined by the roller needle's rotation radius. The larger the rotation radius, the smaller the angle. However, the usage scenario dictates that the rotation radius of the roller needle cannot be set too large. Therefore, cone-shaped damage to the skin caused by conventional roller needles is unavoidable. Summary of the Invention

[0006] This invention provides an adjustable depth skin roller to solve the technical problems of existing rollers having inconvenient insertion depth adjustment and causing significant damage to the skin.

[0007] The embodiments of the present invention are achieved through the following technical solutions: An adjustable depth skin roller includes a rotating shaft and a roller cylinder rotatably disposed on the rotating shaft. The roller cylinder is provided with a plurality of roller needles that can be extended and retracted. The rotating shaft is also connected to a pressure roller, which is embedded in the roller cylinder. The extension and retraction of the pressure roller is provided with a pressure plate, which is used to control the extension and retraction of the roller needles.

[0008] This technical solution places a pressure plate under the roller needle on the skin-contacting side. The extension and retraction of the roller needle is controlled by the pressure plate. As the roller needle rotates on the skin surface, the pressure plate remains facing the skin without rotating with the roller needle, controlling the insertion length of the roller needle on the skin-contacting side to prevent incomplete or excessive insertion. Simultaneously, the pressure plate control also allows for the roller needle to extend and retract during contact and removal from the skin, reducing damage to the skin caused by the rolling insertion and withdrawal. In this solution, the needle tip is shorter when in contact with the skin, and the pressure plate controls the extension of the roller needle. Subsequent punctures are completed through axial extension, rather than solely through rolling. Similarly, withdrawal involves first reducing the length of the roller needle through contraction, followed by rolling withdrawal, minimizing skin damage and pain for the patient.

[0009] Preferably, the pressure plate is disposed in the gap between the needle roller and the pressure roller, and its extension and retraction direction is along the radial direction of the pressure roller.

[0010] Using this technical solution, the axial extension and retraction of the pressure plate controls the maximum length of the roller needle that penetrates the skin.

[0011] Preferably, the pressure plate includes a connector for connecting the needle roller, two sets of side plates, and a set of outwardly protruding curved panels, the curved panels being disposed between the two sets of side plates, and the connector being disposed at one end of the side plates.

[0012] In this technical solution, the pressure plate is connected to the pressure roller via the side plate, which expands the connection area and increases the connection strength. The telescopic connector is set on the side plate, which facilitates the control of its radial expansion and contraction. The curved plate is set between the side plates, located outside the pressure roller, and controls the length of the roller needle in the axial direction. In terms of its curved surface setting, when the roller contacts the skin, the highest point of the curved surface controls the maximum puncture depth of the roller needle, and the lowest point of the curved surface transitions to the pressure roller. The roller needle extends and contracts along the curved surface.

[0013] Preferably, the side plate is further provided with a recessed portion corresponding to the position of the pivot, and the connecting member is provided on both sides of the recessed portion.

[0014] In this technical solution, a recessed part is provided to avoid affecting the rotating shaft. When the pressure plate is extended radially, the rotating shaft can be placed in the recessed part without affecting the extension and retraction of the pressure plate.

[0015] Preferably, the inner and outer sides of the curved panel are curved surfaces, and the radius of the inner curved surface is equal to the radius of the pressure roller, while the radius of the outer curved surface is greater than the radius of the pressure roller.

[0016] With this technical solution, the inner side of the curved panel is completely fitted with the pressure roller, saving space. The surface of the pressure roller also supports the curved panel. When the outer curved surface of the panel extends towards the pressure roller, the transition point is smoother. Furthermore, the radius of the surface of the pressure plate that contacts the skin is large, so the angle between the roller and the skin when it contacts and leaves the skin is smaller, further reducing the damage to the skin caused by rolling puncture.

[0017] Preferably, the pressure roller has connecting blocks on its two radial surfaces, and the connecting member is slidably disposed on the connecting blocks.

[0018] In this technical solution, the side plates protrude from both ends of the pressure roller and are slidably connected to the connecting parts through connecting blocks, ensuring that the sliding direction of the connecting parts is on the radial surface of the pressure roller, thus ensuring a stable sliding process.

[0019] Preferably, the inner side of the needle roller cylinder is further provided with a guide hole, the needle roller is disposed in the guide hole, one end of the bottom end of the needle roller is connected to a spring member, and the other end of the spring member is connected to the inner side of the needle roller cylinder.

[0020] In this technical solution, the guide hole guides the roller needle, ensuring that the extension and retraction direction of the roller needle is along the radial direction of the roller needle cylinder, preventing the roller needle from moving randomly during puncture and causing secondary injury to the patient. The spring component ensures that the roller needle is no longer in a contracted state under normal conditions, and can also retract in time after extension as it moves with the curved panel of the pressure plate, reducing skin damage to the patient.

[0021] Preferably, the two ends of the rotating shaft are respectively provided with connecting frames, the connecting frames are provided with extension frames, and the extension frames are connected to each other with a handle.

[0022] Using this technical solution, the handle is connected by a connecting frame and an extension frame, and puncture is completed by rolling the handle, which facilitates and improves efficiency. At the same time, the connecting frame and the extension frame can also protect the roller needle from touching other parts for puncture.

[0023] Preferably, it also includes a roller head storage box for preventing the roller cylinder and connecting frame from being damaged. The connecting frame has a slot on its outer side, and the roller head storage box has clips at both ends for fixing the slot.

[0024] Using this technical solution, the roller head storage box is used to store the roller cylinder, and the clamps can fix the roller cylinder, allowing it to move within the roller head storage box and be placed stably.

[0025] Preferably, the roller head storage box further includes a first storage box and a second storage box that are rotatably connected, and the first storage box and the second storage box are provided with notches that pass through the extension frame.

[0026] Using this technical solution, by rotating the first storage box and the second storage box, the roller head storage box is opened, and the roller cylinder and connecting frame are stored. The extension frame is fixedly placed through the notch.

[0027] The technical solutions of the embodiments of the present invention have at least the following advantages and beneficial effects: 1. The pressure plate of this invention does not rotate with the roller needle cylinder and always faces the skin, thereby controlling the insertion length of the roller needle on the skin contact surface to prevent incomplete or excessive insertion. 2. When the roller needle of this invention contacts the skin, the needle tip is relatively short. The shorter needle tip pierces the skin, and the roller needle is extended by the pressure plate. The subsequent puncture of the roller needle is completed by its axial extension, rather than by rolling puncture. When withdrawing, the length of the roller needle is reduced by contraction first, and then it is withdrawn by rolling. This reduces the damage to the skin caused by rolling puncture and reduces the pain caused to the patient during use. 3. The large radius of curvature of the pressure plate in contact with the skin in this invention results in a smaller angle between the roller needle and the skin when they contact and leave the skin, further reducing the damage to the skin caused by rolling puncture. Attached Figure Description

[0028] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention 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.

[0029] Figure 1 This is a cross-sectional schematic diagram illustrating the working principle of the adjustable depth skin roller provided in Embodiment 1 of the present invention; Figure 2 This is a three-dimensional structural diagram of the adjustable depth skin roller provided in Embodiment 1 of the present invention; Figure 3 This is a schematic cross-sectional view of the adjustable depth skin roller provided in Embodiment 2 of the present invention. Figure 4 This is a schematic diagram of the pressure plate structure of the adjustable depth skin roller provided in Embodiment 2 of the present invention; Figure 5This is an enlarged schematic diagram of the roller cylinder of the adjustable depth skin roller provided in Embodiment 2 of the present invention; Figure 6 This is a schematic diagram of the structure of the roller head storage box for the adjustable depth skin roller provided in Embodiment 3 of the present invention.

[0030] Reference numerals: 1-Handle, 2-Needle roller cylinder, 21-Needle roller, 22-Spring component, 23-Guide hole, 3-Connecting frame, 31-Extension frame, 4-Pressure roller, 41-Pressure plate, 411-Side plate, 412-Curved panel, 413-Recess, 42-Connector, 43-Connecting block, 5-Adhesive layer, 6-Rotating shaft, 7-Roller head storage box, 71-Clip, 72-First storage box, 73-Second storage box, 74-Notch. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of the 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 invention without inventive effort are within the scope of protection of the invention.

[0033] 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.

[0034] In the description of this invention, it should be noted that if terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," or "outer" are used to 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 is in use, they are only for the convenience of describing this invention and simplifying the description, and are not intended to 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 invention.

[0035] In the description of this invention, 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 invention based on the specific circumstances.

[0036] Example 1 An adjustable depth skin roller 21 includes a rotating shaft 6 and a roller cylinder 2 rotatably disposed on the rotating shaft 6. The roller cylinder 2 is provided with a plurality of roller needles 21 that can be extended and retracted. The rotating shaft 6 is also axially connected to a pressure roller 4. The pressure roller 4 is embedded in the roller cylinder 2. The extension and retraction of the pressure roller 4 is provided with a pressure plate 41, which is used to control the extension and retraction of the roller needles 21.

[0037] In this technical solution, the pressure plate 41 is positioned under the roller cylinder 2 on the skin-contacting side. The extension and retraction length of the roller needle 21 is controlled by the telescopic pressure plate 41. By rotating the roller cylinder 2 on the skin surface, the pressure plate 41 remains facing the skin without rotating with the roller cylinder 2, thus controlling the insertion length of the roller needle 21 on the skin-contacting side and preventing incomplete or excessive insertion. Simultaneously, the pressure plate 41 also controls the roller needle 21 to protrude during both the initial contact and removal of the skin. The extension and retraction changes from short to long and from long to short reduce the damage to the skin caused by the rolling needle 21 during insertion or withdrawal. In this technical solution, the needle tip is shorter when the rolling needle 21 contacts the skin. The shorter needle tip pierces the skin, and the extension of the rolling needle 21 is controlled by the pressure plate 41. Subsequent punctures are completed by the axial extension of the rolling needle 21, rather than by rolling puncture. When withdrawing, the length of the rolling needle 21 is reduced by contraction first, and then it is withdrawn by rolling. This reduces the damage to the skin caused by rolling puncture and reduces the pain caused to the patient during use.

[0038] In this embodiment, the pressure plate 41 is disposed in the gap between the needle roller 2 and the pressure roller 4, and its extension and retraction direction is along the radial direction of the pressure roller 4.

[0039] Using this technical solution, the axial extension and retraction of the pressure plate 41 controls the maximum length of the roller needle 21 that penetrates the skin.

[0040] In this embodiment, the inner and outer sides of the curved panel 412 are curved surfaces, and the radius of the inner curved surface is equal to the radius of the pressure roller 4, while the radius of the outer curved surface is greater than the radius of the pressure roller 4.

[0041] With this technical solution, the inner side of the curved panel 412 is completely in contact with the pressure roller 4, saving space. The surface of the pressure roller 4 also supports the curved panel 412. When the outer curved surface of the curved panel 412 extends towards the pressure roller 4, the transition point is smoother. In addition, the radius of the surface of the pressure plate 41 that contacts the skin is large. Therefore, when the roller needle 21 contacts and leaves the skin, the angle between it and the skin becomes smaller, further reducing the damage to the skin caused by rolling puncture.

[0042] In this embodiment, the two ends of the rotating shaft 6 are respectively provided with connecting frames 3, the connecting frames 3 are provided with extension frames 31, and the extension frames 31 are connected to each other with a handle 1.

[0043] Using this technical solution, the handle 1 is connected by the connecting frame 3 and the extension frame 31, and the puncture is completed by the rolling of the handle 1, which facilitates and improves efficiency. At the same time, the connecting frame 3 and the extension frame 31 can also protect the roller needle 21 from touching other parts for puncture.

[0044] Example 2 The only difference between this embodiment and embodiment 1 is that, in this embodiment, the side plate 411 is further provided with a recess 413 corresponding to the position of the rotating shaft 6, and the connector 42 is provided on both sides of the recess 413.

[0045] In this technical solution, a recessed portion 413 is provided so as not to affect the rotating shaft 6. When the radial telescopic pressure plate 41 is used, the rotating shaft 6 can be placed in the recessed portion 413 without affecting the telescopic movement of the pressure plate 41.

[0046] In this embodiment, the pressure plate 41 includes a connector 42 connecting the needle roller 2, two sets of side plates 411 and a set of outwardly protruding curved panels 412. The curved panels 412 are disposed between the two sets of side plates 411, and the connector 42 is disposed at one end of the side plates 411.

[0047] In this technical solution, the pressure plate 41 is connected to the pressure roller 4 via the side plate 411, which expands the connection area and increases the connection strength. The telescopic connector 42 is set on the side plate 411 to facilitate control of its radial expansion and contraction. The curved plate 412 is set between the side plates 411, located outside the pressure roller 4, and controls the length of the axial needle roller 21. In terms of its curved surface setting, when rolling and contacting the skin, the highest point of the curved surface controls the maximum puncture depth of the needle roller 21, and the lowest point of the curved surface transitions to connect the pressure roller 4. The needle roller 21 extends and contracts along the curved surface.

[0048] In this embodiment, the two radial surfaces of the pressure roller 4 are respectively provided with connecting blocks 43, and the connecting member 42 is slidably disposed on the connecting blocks 43.

[0049] In this technical solution, the side plate 411 protrudes from both ends of the pressure roller 4 and is slidably connected to the connecting member 42 through the connecting block 43, ensuring that the sliding direction of the connecting member 42 is on the radial surface of the pressure roller 4, thus ensuring the stability of the sliding process.

[0050] In this embodiment, the inner side of the needle roller cylinder 2 is also provided with a guide hole 23, the needle roller 21 is disposed in the guide hole 23, the bottom end of the needle roller 21 is connected to one end of a spring member 22, and the other end of the spring member 22 is connected to the inner side of the needle roller cylinder 2.

[0051] In this technical solution, the guide hole 23 guides the roller needle 21, ensuring that the extension and retraction direction of the roller needle 21 is along the radial direction of the roller needle cylinder 2, preventing the roller needle 21 from moving randomly during puncture and causing secondary injury to the patient. The spring member 22 ensures that the roller needle 21 is out of the contracted state under normal conditions, and can also retract in time after being extended and moving with the curved panel 412 of the pressure plate 41, reducing skin damage to the patient.

[0052] Example 3 The difference between this embodiment and embodiment 1 is that this embodiment also includes a roller head storage box 7 for preventing the roller cylinder 2 and the connecting frame 3 from being blocked. The connecting frame 3 has a slot on its outer side, and the roller head storage box 7 has clips 71 at both ends for fixing the slot.

[0053] Using this technical solution, the roller head storage box 7 is used to store the roller cylinder 2, and the clamp 71 can fix the roller cylinder 2, so that it can be displaced in the roller head storage box 7 and placed stably.

[0054] In this embodiment, the roller head storage box 7 further includes a first storage box 72 and a second storage box 73 rotatably connected, and the first storage box 72 and the second storage box 73 are provided with a notch 74 passing through the extension frame 31.

[0055] Using this technical solution, by rotating the first storage box 72 and the second storage box 73, the roller head storage box 7 is opened to store the roller cylinder 2 and the connecting frame 3, and the extension frame 31 is fixedly placed through the notch 74.

[0056] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An adjustable depth skin roller, comprising a rotating shaft (6) and a roller cylinder (2) rotatably disposed on the rotating shaft (6), characterized in that: The needle roller cylinder (2) is provided with several sets of needle rollers (21) for telescopic movement. The rotating shaft (6) is also connected to a pressure roller (4). The pressure roller (4) is embedded in the needle roller cylinder (2). The pressure roller (4) is provided with a telescopic pressure plate (41). The pressure plate (41) is used to control the telescopic movement of the needle rollers (21). The pressure plate (41) is disposed in the gap between the needle roller (2) and the pressure roller (4), and the extension and retraction direction of the pressure plate (41) is along the radial direction of the pressure roller (4); The pressure plate (41) includes a connector (42) connecting the pressure roller (4), two sets of side plates (411) and a set of outwardly convex curved panels (412). The curved panels (412) are located between the two sets of side plates (411), and the connector (42) is located at one end of the side plates (411). The side plate (411) is also provided with a recess (413) corresponding to the position of the pivot (6), and the connector (42) is provided on both sides of the recess (413); The inner and outer sides of the curved panel (412) are curved surfaces, and the radius of the inner curved surface of the curved panel (412) is equal to the radius of the pressure roller (4), while the radius of the outer curved surface of the curved panel (412) is greater than the radius of the pressure roller (4). The pressure roller (4) has connecting blocks (43) on both radial surfaces, and the connecting piece (42) is slidably disposed on the connecting block (43).

2. The adjustable depth skin roller according to claim 1, characterized in that: The inner side of the needle roller cylinder (2) is also provided with a guide hole (23), the needle roller (21) is provided in the guide hole (23), the bottom end of the needle roller (21) is connected to one end of a spring member (22), and the other end of the spring member (22) is connected to the inner side of the needle roller cylinder (2).

3. The adjustable depth skin roller according to claim 2, characterized in that: The rotating shaft (6) is provided with connecting frames (3) at both ends, and the connecting frames (3) are provided with extension frames (31). A handle (1) is connected between the extension frames (31).

4. The adjustable depth skin roller according to claim 3, characterized in that: It also includes a roller head storage box (7) for placing the roller cylinder (2) and the connecting frame (3), the connecting frame (3) has a slot on the outside, and the roller head storage box (7) has clips (71) at both ends for fixing the slot.

5. The adjustable depth skin roller according to claim 4, characterized in that: The roller head storage box (7) also includes a first storage box (72) and a second storage box (73) that are rotatably connected, and the first storage box (72) and the second storage box (73) are provided with a notch (74) through the extension frame (31).

Images