A microneedle patch

Abstract

The utility model relates to the technical field of microneedle, disclose a kind of microneedle patch, including fixed cylinder, the fixed cylinder is equipped with patch body, the one side of patch body is equipped with microneedle cluster, the fixed cylinder is equipped with pusher assembly, the pusher assembly includes the push plate of sliding in fixed cylinder, the push plate center is equipped with push rod, push rod one end penetrates fixed cylinder top, and extend to fixed cylinder outside, the side wall on the both sides of push rod is equipped with a plurality of positioning teeth respectively, the fixed cylinder is equipped with gear meshed with positioning tooth in the both sides of push rod respectively, and the patch body is connected to be equipped in push plate. Its beneficial effect is: patch body can be evenly, vertically inserted into skin, to reduce the probability that microneedle cluster is bent or broken due to uneven stress.

Description

Technical Field

[0001] This utility model relates to the field of microneedle technology, specifically to a microneedle patch. Background Technology

[0002] Compared to traditional injections, microneedle patches do not involve invasive procedures with deep needle penetration. The length of microneedles is typically between a few hundred micrometers and a few millimeters, and they only puncture the surface layer of the skin, so most patients experience less pain, and some even experience almost no pain.

[0003] When using existing microneedle patches, they are usually pressed directly onto the skin. However, this pressing method cannot ensure that the microneedles are inserted vertically into the skin. Furthermore, due to the difference in force applied to the microneedles during pressing, and the fact that the microneedles are thin, they are prone to bending or breaking, which affects the delivery of drugs. Utility Model Content

[0004] (I) Technical problems to be solved

[0005] The technical problem to be solved by this utility model is to overcome the defect of uneven force when the above-mentioned microneedle patch is pressed, and to provide a microneedle patch.

[0006] (II) Technical Solution

[0007] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows: a microneedle patch, including a fixing cylinder, a patch body is provided inside the fixing cylinder, a cluster of microneedles is provided on one side of the patch body, a pushing assembly is provided inside the fixing cylinder, the pushing assembly includes a push plate slidably disposed inside the fixing cylinder, a push rod is provided at the center of the push plate, one end of the push rod passes through the top of the fixing cylinder and extends to the outside of the fixing cylinder, a plurality of positioning teeth are arrayed on the side walls of the push rod respectively, and gears that mesh with the positioning teeth are rotatably connected to the sides of the push rod inside the fixing cylinder, and the patch body is connected to the push plate.

[0008] As an improvement: the push plate is provided with a limiting plate, and the inner wall of the fixed cylinder is provided with a sliding groove that matches the limiting plate, and the limiting plate slides within the sliding groove.

[0009] As an improvement: the skin contact surface of the patch body is provided with adhesive on the outside of the microneedle cluster, and lifting cloth is provided on both sides of the patch body.

[0010] As an improvement: the bottom surface of the push plate is provided with an adsorption groove, the adsorption groove contains a magnet, and the surface of the patch body opposite to the adhesive is provided with a magnetic strip that is compatible with the adsorption groove.

[0011] As an improvement: the microneedle cluster is composed of microneedles arranged in a 9*9 matrix array, wherein the microneedles are hollow structures.

[0012] As an improvement, a silicone ring is provided at the bottom opening of the fixing cylinder.

[0013] (III) Beneficial Effects

[0014] The advantages of this utility model compared with the prior art are as follows:

[0015] This device is equipped with a pushing component. With the meshing of the positioning teeth and the gears on both sides, a smooth pushing force is applied through the linkage of the gears and positioning teeth, allowing the push rod to descend vertically. At the same time, the push plate is restricted by the sliding groove, so that the force can be evenly distributed on the entire patch body, thereby ensuring that the microneedles are evenly and vertically inserted into the skin, reducing the chance of the microneedles bending or breaking. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a microneedle patch according to this utility model.

[0017] Figure 2 yes Figure 1 A schematic diagram of the explosion structure.

[0018] Figure 3 yes Figure 2 A schematic diagram of the fixed cylinder structure on the right.

[0019] Figure 4 yes Figure 3 A schematic diagram of the cross-sectional structure at point AA.

[0020] Figure 5 yes Figure 2 A schematic diagram of the patch body structure.

[0021] [Explanation of Labels in the Attached Image]

[0022] 1. Fixing cylinder; 2. Patch body; 3. Microneedle cluster; 4. Push plate; 5. Push rod; 6. Positioning teeth; 7. Gear; 8. Limiting plate; 9. Slide groove; 10. Lifting cloth; 11. Adhesive; 12. Adsorption groove; 13. Magnetic strip; 14. Silicone ring. Detailed Implementation

[0023] The present invention will now be described in further detail with reference to the accompanying drawings. Identical components are indicated by the same reference numerals.

[0024] It should be noted that the terms “front,” “back,” “left,” “right,” “up,” and “down” used in the following description refer to the directions shown in the attached diagram, while the terms “inside” and “outside” refer to the directions toward or away from the geometric center of a specific component, respectively.

[0025] To make the content of this utility model easier to understand, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0026] Combined with appendix Figure 1 and Figure 2 As shown, a microneedle patch includes a fixing cylinder 1, a patch body 2 inside the fixing cylinder 1, a drug storage chamber inside the patch body 2, and a microneedle cluster 3 on one side of the patch body 2. The microneedle cluster 3 is composed of a 9*9 matrix array of microneedles, wherein the microneedles are hollow. The skin contact surface of the patch body 2 is provided with adhesive 11 on the outside of the microneedle cluster 3. The surface of the adhesive 11 is covered with release paper, which is removed before use so that the patch body 2 can be fixed on the patient's skin. The patch body 2 is provided with lifting cloth 10 on both sides. The lifting cloth 10 is made of non-woven fabric. The lifting cloth 10 is provided to facilitate the removal of the patch body 2 from the skin after use.

[0027] Combined with appendix Figure 2 The bottom opening of the fixation cylinder 1 shown is provided with a silicone ring 14. The silicone material is soft and comfortable and easy to clean. The silicone ring 14 can increase the friction between the fixation cylinder 1 and the patient's skin, thereby ensuring the stability of the position of the fixation cylinder 1 during use.

[0028] Combined with appendix Figure 3 and Figure 4 As shown, the fixed cylinder 1 is provided with a pushing assembly, which includes a push plate 4 slidably disposed in the fixed cylinder 1. The push plate 4 has a push rod 5 at its center. One end of the push rod 5 passes through the top of the fixed cylinder 1 and extends to the outside of the fixed cylinder 1. Several positioning teeth 6 are arrayed on the side walls of the push rod 5. Gears 7 that mesh with the positioning teeth 6 are rotatably connected to the sides of the push rod 5 in the fixed cylinder 1. The push plate 4 is provided with a limiting plate 8. The inner wall of the fixed cylinder 1 is provided with a sliding groove 9 that matches the limiting plate 8. The limiting plate 8 is slidably located in the sliding groove 9.

[0029] Combined with appendix Figure 2 and Figure 5 As shown, the patch body 2 is connected to the push plate 4. The bottom surface of the push plate 4 is provided with an adsorption groove 12, and a magnet is built into the adsorption groove 12. The patch body 2 and the adhesive 11 are provided with a magnetic strip 13 that is compatible with the adsorption groove 12.

[0030] Before use, attach the patch body 2 to the push plate 4. The magnetic strip 13 attracts the magnet to fix the patch body 2. Then remove the release paper on the patch body 2. The fixing cylinder 1 is perpendicular to the patient's skin to prevent the silicone ring 14 from contacting the skin. Push the push rod 5 downward. During the downward movement of the push rod 5, it drives the gears 7 on both sides of the push rod 5 to rotate. The two gears 7 rotate in opposite directions but at the same speed. Through the meshing of the gears 7 and the positioning teeth 6, the push rod 5 descends more smoothly, so that the patch body 2 is subjected to uniform force. With the cooperation of the limiting plate 8 and the slide groove 9, it can be ensured that the push plate 4 is always horizontal with the skin, ensuring that the microneedle cluster 3 is inserted vertically and reducing the chance of the microneedle cluster 3 bending or breaking.

[0031] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A microneedle patch, comprising a fixing cylinder (1), wherein a patch body (2) is disposed inside the fixing cylinder (1), and a microneedle cluster (3) is disposed on one side of the patch body (2), characterized in that: The fixed cylinder (1) is provided with a pushing assembly, which includes a push plate (4) slidably disposed in the fixed cylinder (1). The center of the push plate (4) is provided with a push rod (5). One end of the push rod (5) passes through the top of the fixed cylinder (1) and extends to the outside of the fixed cylinder (1). Several positioning teeth (6) are arranged in an array on the side walls of the push rod (5). Gears (7) that mesh with the positioning teeth (6) are rotatably connected to the sides of the push rod (5) in the fixed cylinder (1). The patch body (2) is connected to the push plate (4).

2. The microneedle patch according to claim 1, characterized in that: The push plate (4) is provided with a limiting plate (8), and the inner wall of the fixed cylinder (1) is provided with a sliding groove (9) that matches the limiting plate (8). The limiting plate (8) slides within the sliding groove (9).

3. A microneedle patch according to claim 1, characterized in that: The patch body (2) has an adhesive (11) on the skin contact surface located outside the microneedle cluster (3), and lifting cloth (10) is provided on both sides of the patch body (2).

4. A microneedle patch according to claim 3, characterized in that: The bottom surface of the push plate (4) is provided with an adsorption groove (12), and a magnet is built into the adsorption groove (12). The surface of the patch body (2) opposite to the adhesive (11) is provided with a magnetic strip (13) that is compatible with the adsorption groove (12).

5. A microneedle patch according to claim 1, characterized in that: The microneedle cluster (3) is composed of microneedles arranged in a 9*9 matrix array, wherein the microneedles are hollow structures.

6. A microneedle patch according to claim 1, characterized in that: A silicone ring (14) is provided at the bottom opening of the fixed cylinder (1).

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