A cosmetic microneedle durability test tool
By designing a durability testing fixture for cosmetic microneedles, and using a screw conveyor and artificial skin to simulate a real-world usage environment, the problem of inaccurate durability testing of cosmetic microneedles in existing technologies is solved. This enables the evaluation of the stability of microneedles within their shelf life, ensuring the rigor and flexibility of the test results.
Patent Information
- Authority / Receiving Office
- CN Β· China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI SHAGE MEDICAL TECH CO LTD
- Filing Date
- 2025-07-07
- Publication Date
- 2026-07-14
AI Technical Summary
Existing durability testing methods for cosmetic microneedles cannot effectively assess whether physical defects such as bending or breakage will occur during use, resulting in unrealistic testing environments and failing to ensure stable use of microneedles within their shelf life.
A durability testing fixture for cosmetic microneedles was designed. The fixture uses a screw jack and a semi-circular clamp to hold the cosmetic microneedle sample. Combined with artificial skin to simulate the real use environment, the fixture performs a durability test through reciprocating motion to observe whether defects such as bending or breakage occur.
This technology enables durability testing of cosmetic microneedles in a simulated real-world environment, ensuring the rigor and flexibility of the test results. It can accurately determine the physical stability of the microneedles, thus improving the accuracy and reliability of the test.
Smart Images
Figure CN224500259U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of durability testing technology for cosmetic microneedles, specifically a tooling for testing the durability of cosmetic microneedles. Background Technology
[0002] Cosmetic microneedling is a minimally invasive transdermal drug delivery and skin stimulation technology. Its core mechanisms of action can be divided into two main categories: mechanical stimulation and transdermal enhancement. The specific effects vary depending on the type of microneedle (solid, hollow, soluble, etc.) and the application scenario. Different types of cosmetic microneedle tips have different effective periods, usually 100 to 200 minutes. In order to ensure that cosmetic microneedles can be used normally within their effective period, their durability needs to be evaluated and tested.
[0003] According to CN208927420U, a microneedle roller includes a handle and a roller. The roller is rotatably mounted on a bracket at one end of the handle. The roller comprises a front cover, a rear cover, and several needle pieces. The front cover has a shaft tube with a boss on it. The rear cover has a shaft core that can be inserted into and cooperates with the shaft tube. Each needle piece has a groove that cooperates with the boss, and the needle pieces are adjacent and coaxially mounted on the shaft tube. Two protruding rings are provided at one end of the front cover and each needle piece. Several needle grooves for clamping and mounting microneedles are correspondingly arranged on the two protruding rings. During use, the roller will not make noise due to friction, thus providing a fixed and silent effect. Furthermore, the double needle groove design provides better fixation for each microneedle, achieving a double protection effect, making it more robust and less prone to displacement or needle detachment.
[0004] However, in actual operation, the inventors found that the following problems still exist: Although the microneedles in the above solution have a better fixing effect on each microneedle through the double needle groove design, achieving a double protection effect and making them more robust in use, it is impossible to know whether physical defects such as bending or breakage will occur in actual use.
[0005] Based on this, the present invention provides a testing fixture for the durability of cosmetic microneedles. Utility Model Content
[0006] To address the shortcomings of existing technologies, this invention provides a durability testing fixture for cosmetic microneedles, which has the advantage of being suitable for quickly confirming the durability of microneedles during the research and development and testing of cosmetic microneedles, and solves the problems mentioned in the background technology.
[0007] This utility model provides the following technical solution: a durability testing fixture for cosmetic microneedles, including a test bench, a screw jack on the top of the test bench, a connecting seat fixedly connected to the side of the screw jack, a screw rod fixedly connected to the top and bottom of the connecting seat, a connecting frame attached to the surface of the screw rod, a semi-circular clamp fixedly connected to the side of the connecting frame, and a cosmetic microneedle test sample attached to the inside of the semi-circular clamp.
[0008] Preferably, a telescopic sleeve is fixedly installed on the top of the test bench, a support plate is fitted inside the telescopic sleeve, a test platform is fixedly installed on the top of the support plate, and an artificial skin is provided on the top of the test platform.
[0009] Preferably, extension arms are fixedly connected to both sides of the test bench, and a connecting handle is fixedly installed on the top of the extension arms.
[0010] Preferably, the side of the semi-circular clamp is fitted to the side of the connecting seat.
[0011] Preferably, the surface of the screw is threaded with an internally threaded sleeve, and the bottom of the internally threaded sleeve is fitted with a connecting frame.
[0012] Preferably, both the telescopic sleeve and the support plate are provided with a number of screw holes, and a set of screw holes are internally threaded with fastening bolts.
[0013] Compared with the prior art, the present invention has the following beneficial effects:
[0014] This durability testing fixture for cosmetic microneedles works by manually pressing the connecting frame in the middle, causing the semi-circular clamp to secure the microneedle test sample. The connecting frame is then limited by the rotation of the internal threaded sleeve on the surface of the screw. A screw jack controls the vertical movement of the microneedle test sample, ensuring full contact between the roller portion of the sample and the artificial skin. The displacement and testing time are set according to the circumference and shelf life of different microneedle test samples. The screw jack controls the motor to begin reciprocating motion, driving the roller of the microneedle test sample... The cylinder reciprocates, and the displacement distance of the motor on the screw jack is equal to or greater than the circumference of the cylinder. After the durability test is completed, the cosmetic microneedle test sample is removed from the artificial skin, and the condition of the artificial skin is observed to determine whether there are physical defects such as bending or breakage. This test fixture simulates the real use environment of cosmetic microneedling. The artificial skin used has certain requirements. The test time is equal to or greater than the shelf life, and the displacement distance is equal to or greater than the circumference of the cylinder. The test environment is more realistic and the process is more rigorous. The speed and distance of the screw jack displacement can be adjusted at any time as needed, making the test more flexible. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the overall structure of the device of this utility model;
[0016] Figure 2 This utility model Figure 1 A schematic diagram of the structure on the right side;
[0017] Figure 3 This utility model Figure 1 A partial structural diagram.
[0018] In the picture:
[0019] 1. Test bench; 101. Extension arm; 102. Connecting handle;
[0020] 2. Screw jack; 201. Connecting seat; 202. Screw 1; 203. Connecting frame; 204. Internal threaded sleeve; 205. Semi-arc clamp; 206. Cosmetic microneedle test sample;
[0021] 3. Telescopic sleeve; 301. Fastening bolt; 302. Support plate; 303. Screw hole; 304. Test platform; 305. Artificial skin. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0023] Please see Figure 1-3A durability testing fixture for cosmetic microneedles includes a test bench 1. A screw jack 2 is mounted on the top of the test bench 1. A connecting seat 201 is fixedly connected to the side of the screw jack 2. A screw 202 is fixedly connected to the top and bottom of the connecting seat 201, respectively. A connecting frame 203 is attached to the surface of the screw 202. A semi-circular clamp 205 is fixedly connected to the side of the connecting frame 203. A cosmetic microneedle test sample 206 is attached to the inside of the semi-circular clamp 205. By manually pressing the connecting frame 203 towards the center, the semi-circular clamp 205 fixedly connected to the connecting frame 203 clamps the cosmetic microneedle test sample 206. An internal threaded sleeve 204 rotates on the surface of the screw 202 to limit the movement of the connecting frame 203. The screw jack 2 controls the up-and-down movement of the cosmetic microneedle test sample 206 to ensure that the roller portion of the cosmetic microneedle test sample 206 fully contacts the surface. Artificial skin 305, based on the circumference and shelf life of different cosmetic microneedle test samples 206, sets the displacement and test time for durability testing. A screw jack 2 controls a motor to begin reciprocating motion, causing the roller of the cosmetic microneedle test sample 206 to roll reciprocally. The displacement distance of the motor on the screw jack 2 is equal to or greater than the circumference of the roller. After the durability test is completed, the cosmetic microneedle test sample 206 is removed from the artificial skin 305, and the condition of the artificial skin 305 is observed to determine if there are any physical defects such as bending or breakage. This testing fixture simulates the real usage environment of cosmetic microneedling. The artificial skin used has certain requirements; the test time is equal to or greater than the shelf life; and the displacement distance is equal to or greater than the circumference of the roller. The test environment is more realistic, and the process is more rigorous. The speed and distance of the screw jack displacement can be adjusted as needed, making the test more flexible.
[0024] The test bench 1 is equipped with a telescopic sleeve 3 fixedly installed on its top. A support plate 302 is fitted inside the telescopic sleeve 3. A test platform 304 is fixedly installed on the top of the support plate 302. An artificial skin 305 is provided on the top of the test platform 304. After the telescopic sleeve 3 and the support plate 302 are aligned, the platform is limited by the fastening bolt 301. The height of the test platform 304 can be adjusted to meet the requirements of a comfortable operating height.
[0025] The artificial skin 305 is fixed to the top of the test platform 304 using adhesive to ensure the adhesion is strong and to prevent it from falling off.
[0026] The test bench 1 has extension arms 101 fixedly connected to both sides, and a connecting handle 102 fixedly installed on the top of the extension arms 101.
[0027] The side of the semi-circular clamp 205 is in contact with the side of the connecting seat 201.
[0028] Among them, the surface of the screw 202 is threaded with an internal threaded sleeve 204, and the bottom of the internal threaded sleeve 204 is fitted with a connecting bracket 203.
[0029] The telescopic sleeve 3 and the support plate 302 are both provided with several screw holes 303, and a set of screw holes 303 are internally threaded with fastening bolts 301.
[0030] The working principle is as follows: First, artificial skin 305 is fixed to the top of the test platform 304 using adhesive. The cosmetic microneedling test sample 206 is placed on the inner arc surface of two sets of semi-circular clamps 205. By manually pressing the connecting frame 203 towards the center, the semi-circular clamps 205, which are fixed to the connecting frame 203, clamp the cosmetic microneedling test sample 206. Then, the internal threaded sleeve 204 rotates on the surface of the screw 202 to limit the movement of the connecting frame 203. Finally, the screw jack 2 controls the up-and-down movement of the cosmetic microneedling test sample 206, ensuring the stability of the sample. The roller portion of 206 fully contacts the artificial skin 305. Based on the circumference and shelf life of different cosmetic microneedle test samples 206, the displacement and test time for durability testing are set. The motor is controlled by the screw jack 2 to start reciprocating motion, driving the roller of the cosmetic microneedle test sample 206 to roll back and forth. The displacement distance of the motor on the screw jack 2 is equal to or greater than the circumference of the roller. After the durability test is completed, the cosmetic microneedle test sample 206 is removed from the artificial skin 305, and the state of the artificial skin 305 is observed to determine whether there are physical defects such as bending or breakage.
[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used only 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 process, method, article, or apparatus.
[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A durability testing fixture for cosmetic microneedles, characterized in that, The test bench (1) is provided with a screw jack (2) on the top of the test bench (1). A connecting seat (201) is fixedly connected to the side of the screw jack (2). A screw (202) is fixedly connected to the top and bottom of the connecting seat (201). A connecting frame (203) is attached to the surface of the screw (202). A semi-circular clamp (205) is fixedly connected to the side of the connecting frame (203). A cosmetic microneedle test sample (206) is attached to the inside of the semi-circular clamp (205).
2. The durability testing fixture for cosmetic microneedles according to claim 1, characterized in that: The top of the test bench (1) is fixedly installed with a telescopic sleeve (3), and a support plate (302) is attached to the inside of the telescopic sleeve (3). The top of the support plate (302) is fixedly installed with a test platform (304), and an artificial skin (305) is provided on the top of the test platform (304).
3. The durability testing fixture for cosmetic microneedles according to claim 1, characterized in that: The test bench (1) is fixedly connected to both sides with extension arms (101), and a connecting handle (102) is fixedly installed on the top of the extension arms (101).
4. The durability testing fixture for cosmetic microneedles according to claim 1, characterized in that: The side of the semi-circular clamp (205) is fitted to the side of the connecting seat (201).
5. The durability testing fixture for cosmetic microneedles according to claim 1, characterized in that: The screw (202) is threadedly connected to an internally threaded sleeve (204), and a connecting bracket (203) is attached to the bottom of the internally threaded sleeve (204).
6. The durability testing fixture for cosmetic microneedles according to claim 2, characterized in that: Both the telescopic sleeve (3) and the support plate (302) are provided with a number of screw holes (303), and a set of screw holes (303) are internally threaded with fastening bolts (301).