Radio-frequency injection microneedle structure and therapeutic device

Abstract

The present application relates to the technical field of medical instruments, and discloses a radio-frequency injection microneedle structure and a therapeutic device. The radio-frequency injection microneedle structure comprises a needle plate and a plurality of microneedles; the plurality of microneedles are all mounted on the needle plate and arranged at intervals in an array, wherein at least two microneedles are electrically connected to form a microneedle group, and two microneedle groups, or one microneedle group and another microneedle are respectively connected to a positive electrode and a negative electrode of an external power supply to define an energy area, at least two energy areas are formed, and the at least two energy areas sequentially and alternately act on different treatment areas.

Description

Radiofrequency injection microneedle structure and treatment device

[0001] Related applications

[0002] This application claims priority to Chinese patent application No. 202411822075.8, filed on December 11, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application relates to the field of medical device technology, and in particular to a radiofrequency injection microneedle structure and therapeutic device. Background Technology

[0004] Radiofrequency microneedling is a treatment method that combines radiofrequency microneedling technology with drug-injection microneedling technology. The microneedles in this radiofrequency microneedling device can be used to inject cosmetic solutions and also generate radiofrequency energy. Both treatments can be completed in a single insertion, reducing the number of microneedle insertions during treatment. Simultaneously, the radiofrequency energy generated by the radiofrequency microneedles can enhance the effectiveness of drug injection treatments.

[0005] Because drug injection therapy requires ensuring the uniformity of the injection volume of the treatment solution within the treatment area, multiple microneedles need to be designed in a matrix arrangement with uniform spacing. However, during radiofrequency bipolar therapy, this uniformly spaced arrangement causes the central microneedle to form a current path with multiple surrounding microneedles within the microneedle matrix. This results in the current density superimposed in the central region, creating a "centrally concentrated" electric field distribution. Consequently, the temperature is higher in the central area of ​​the matrix, while the temperature is lower at the edges and corners, leading to temperature variations at different locations within the treatment area and thus affecting the effectiveness of radiofrequency therapy. Summary of the Invention

[0006] The main purpose of this application is to propose a radiofrequency injection microneedle structure and treatment device, which aims to solve the problem of different temperatures at different positions in the microneedle matrix when using existing radiofrequency drug injection treatment devices for radiofrequency therapy.

[0007] To achieve the above objectives, this application proposes a radiofrequency injection microneedle structure, which includes a needle plate and multiple microneedles. The multiple microneedles are mounted on the needle plate and arranged in an array with intervals. At least two microneedles are electrically connected to form a microneedle group. Two microneedle groups, or one microneedle group and another microneedle, are respectively connected to the positive and negative terminals of an external power supply to enclose and form an energy zone. At least two energy zones are formed, and the at least two energy zones alternately treat different treatment areas.

[0008] In one embodiment of this application, at least one of the energy regions is formed by two microneedle groups, the two microneedle groups having the same number of microneedles, and the shape of the energy region is a parallelogram with unequal diagonals.

[0009] In one embodiment of this application, at least one of the energy regions is formed by two microneedle groups, and the number of microneedles in the two microneedle groups is different, and the shape of the energy region is trapezoidal.

[0010] In one embodiment of this application, at least one of the energy regions is formed by a group of microneedles and a microneedle, and the shape of the energy region is triangular.

[0011] In one embodiment of this application, a plurality of microneedles are arranged in a square lattice matrix, and the spacing between any two adjacent microneedles is the same.

[0012] In one embodiment of this application, each of the microneedles participates in the formation of at least one of the energy regions, and the energy regions do not overlap with each other.

[0013] In one embodiment of this application, each of the microneedles in each microneedle group is located in adjacent different rows and columns in the square lattice matrix.

[0014] In one embodiment of this application, the center connecting lines of each of the microneedles in the plurality of microneedle groups are parallel or perpendicular to each other.

[0015] In one embodiment of this application, each microneedle in each microneedle group is located in the same row or column of the square lattice matrix, and each microneedle in the microneedle group is arranged adjacent to each other.

[0016] In one embodiment of this application, at least a portion of the plurality of microneedles are injection needles, which are connected to an external liquid injection device so that the energy zone is used sequentially to emit radio frequency energy and inject liquid.

[0017] In one embodiment of this application, the polarity of each injection needle in each energy region is the same, and the injection needles in the microneedle array are evenly distributed and not adjacent to each other.

[0018] In one embodiment of this application, the plurality of microneedles in each energy region are located on the periphery of the energy region.

[0019] This application also proposes a treatment device, which includes a housing and a radiofrequency injection microneedle structure as described above; the needle plate is movably disposed within the housing, and moving the needle plate causes the microneedles to extend out of the housing.

[0020] The radiofrequency injection microneedle structure proposed in this application includes a needle plate and multiple microneedles mounted on the needle plate. The microneedles are spaced apart, and at least two microneedles are electrically connected to form a microneedle group. Two microneedle groups are respectively connected to the positive and negative terminals of an external power supply, or one microneedle group and another microneedle are respectively connected to the positive and negative terminals of an external power supply. An energy zone is formed between two microneedle groups or between one microneedle group and another microneedle. Multiple energy zones are formed, and these zones are sequentially connected to an external power supply, thereby sequentially heating and treating different locations within the treatment area. This avoids the problem of uneven temperature distribution in the treatment area caused by simultaneously connecting multiple microneedles of a microneedle array, thus improving the radiofrequency treatment effect. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0022] Figure 1 is a schematic diagram of an embodiment of the radiofrequency injection microneedle structure provided in this application;

[0023] Figure 2 is a schematic diagram of the structure of each energy region in the radiofrequency injection microneedle structure in Figure 1;

[0024] Figure 3 is a schematic diagram of another embodiment of the radiofrequency injection microneedle structure provided in this application;

[0025] Figure 4 is a schematic diagram of the structure of each energy region in the radiofrequency injection microneedle structure in Figure 3;

[0026] Figure 5 is a schematic diagram of another embodiment of the radiofrequency injection microneedle structure provided in this application;

[0027] Figure 6 is a schematic diagram of the structure of each energy region in the radiofrequency injection microneedle structure in Figure 5;

[0028] Figure 7 is a schematic diagram of the temperature distribution after each energy region releases energy sequentially in one embodiment of the radiofrequency injection microneedle structure provided in this application.

[0029] Explanation of icon numbers:

[0030] 11. Microneedles; 10. Microneedle group; 100. Energy zone; 20. Needle plate.

[0031] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Embodiments of the present invention

[0032] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0033] It should be noted that if the embodiments of this application involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0034] Furthermore, if the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0035] This application proposes a radiofrequency injection microneedle structure.

[0036] Referring to Figures 1 to 4, in one embodiment of this application, the radiofrequency injection microneedle structure includes a needle plate 20 and a plurality of microneedles 11; the plurality of microneedles 11 are all mounted on the needle plate 20 and arranged in an array at intervals; wherein, at least two microneedles 11 are electrically connected to form a microneedle group 10, and two microneedle groups 10, or one microneedle group 10 and another microneedle 11 are respectively connected to the positive and negative terminals of an external power supply to enclose and form an energy region 100, and at least two energy regions 100 are formed, and the at least two energy regions 100 alternately treat different treatment areas in sequence.

[0037] The radiofrequency microneedle structure combines the treatment modes of radiofrequency microneedles and drug injection needles, allowing for both treatments to be completed in a single injection, reducing patient discomfort and improving treatment efficiency. Radiofrequency therapy can be performed before, after, or simultaneously with drug injection therapy. The radiofrequency energy generated during radiofrequency therapy not only provides the therapeutic effect but also reduces the pain of microneedle insertion into the skin and enhances the absorption of the injected medication.

[0038] The treatment solutions used in drug injection therapy include, but are not limited to, hyaluronic acid, sodium hyaluronate, collagen, filler microspheres, saline solution, and analgesics, to broaden the application range of drug injection therapy. For example, hyaluronic acid and sodium hyaluronate can improve skin quality and enhance skin radiance; collagen is used to increase skin elasticity and firmness, and improve fine lines and wrinkles; filler microspheres use a physical filling method to improve facial contours, reduce wrinkles, and restore facial fullness; saline solution can be used to replenish moisture, promote metabolism, and improve skin condition; in some cases, to reduce discomfort during the injection process, an appropriate amount of analgesic may be mixed into the treatment solution.

[0039] In this embodiment, multiple microneedles 11 are mounted on a needle plate 20. These microneedles 11 are arranged at predetermined array intervals to ensure the uniformity of the treatment solution injection during drug injection therapy. Simultaneously, all microneedles 11 are electrically connected to an external power source, allowing each microneedle 11 to interact with another microneedle 11 of different polarity to generate radio frequency energy. At least two microneedles 11 are electrically connected to form a microneedle group 10. Circuitry can be provided within the needle plate 20, and the microneedles 11 within the same microneedle group 10 can be electrically connected through the circuitry on the needle plate 20, or they can be electrically connected through external wires, allowing the microneedles 11 within the same microneedle group 10 to be connected in parallel. As shown in Figures 1 and 2, the external power source is electrically connected to each microneedle 11 through a power supply board. The power supply board has multiple power supply pins, and each microneedle 11 is electrically connected to a power supply pin through a wire (solid line). Simultaneously, the microneedles 11 within the same microneedle group 10 are electrically connected through another circuit wire (dashed line). Therefore, when the positive terminal of the external power supply supplies power to a certain microneedle 11 through a power supply pin, the microneedle group 10 in which the microneedle 11 is located is electrically connected to the positive terminal of the external power supply.

[0040] The microneedle array contains at least two microneedle groups 10. When both microneedle groups 10 are simultaneously connected to the positive and negative terminals of an external power supply, an energy zone 100 is formed between the two microneedle groups 10, and radiofrequency energy is generated within this energy zone 100. By using relays or a control power supply board to alternately connect different microneedle groups 10 to the positive and negative terminals of the external power supply, different energy zones 100 can alternately generate radiofrequency energy. This alternating operation mode of the energy zones 100 ensures uniform heat distribution and avoids the problems of local overheating or local undertemperature due to the radiofrequency edge effect among multiple microneedles 11, thereby improving the effect of radiofrequency treatment. Of course, the energy zone 100 can also be formed by one microneedle group 10 and another microneedle 11.

[0041] To more clearly illustrate the effect of the radiofrequency injection microneedle structure in this application on temperature uniformity, Figure 7 is a schematic diagram of the temperature distribution of each energy zone of the radiofrequency injection microneedle structure, using a 5*5 microneedle matrix as an example, where the energy is released sequentially. This 5*5 microneedle matrix includes 7 energy zones. Figure 7(a) shows the initial temperature distribution of each microneedle and microneedle group in the radiofrequency injection microneedle structure when no power is applied; Figures (b), (c), (d), (e), (f), (g), and (h) show the temperature distribution after each energy zone is sequentially and alternately connected to a power source and generates radiofrequency energy; Figure (i) shows the final overall temperature distribution after all energy zones are sequentially and alternately connected to a power source.

[0042] As shown in Figure 7, by dividing multiple microneedles 11 into different energy zones 100 and controlling the sequential activation of these energy zones 100, the energy is concentrated within each energy zone when the microneedles are activated. Since the microneedles in other energy zones are disconnected from the circuit, the temperature of those zones is less affected. This design reduces the impact of radiofrequency edge effects between microneedles 11 in different energy zones 100. Compared to simultaneously activating all microneedles 11 to an external power source, dividing multiple microneedles 11 into different energy zones 100 results in more uniform temperature distribution across different treatment areas.

[0043] At least some of the microneedles 11 have a hollow structure to facilitate the injection of beauty serum into the skin. The microneedles 11 used for radiofrequency treatment can be either solid or hollow. During treatment, radiofrequency therapy and drug injection are performed sequentially to avoid problems such as the treatment solution causing a short circuit in the radiofrequency current or the radiofrequency current electrolyzing the treatment solution.

[0044] Furthermore, the applicant discovered in their experimental research that the different shapes of energy zones 100, and the location of energy zones 100 with different shapes, also affect the temperature uniformity of the microneedle array in the treatment area. The shape and location of the energy zones 100 are described below.

[0045] Referring to Figures 1 to 4, in one embodiment of this application, at least one energy region 100 is formed by two microneedle groups 10, the two microneedle groups 10 have the same number of microneedles 11, and the shape of the energy region 100 is a parallelogram with unequal diagonals.

[0046] In this embodiment, the energy region 100 is designed as a parallelogram with unequal diagonals, i.e., a non-rectangular parallelogram. The four sides of the parallelogram can be of equal or different lengths. Regardless of the side lengths, all positively polarized microneedles 11 are located on one side of the parallelogram, and all negatively polarized microneedles 11 are located on the opposite side of the parallelogram. This arrangement of positive and negative microneedles ensures a more uniform energy density across different locations within the energy region 100. This non-rectangular parallelogram energy region 100 exhibits good uniformity and can be positioned at the center or corners of the microneedle array, achieving good therapeutic effects.

[0047] Referring to Figures 1 to 4, in one embodiment of this application, at least one energy region 100 is formed by two microneedle groups 10, and the number of microneedles 11 in the two microneedle groups 10 is different, and the shape of the energy region 100 is trapezoidal.

[0048] In practice, when dividing the microneedle array into different energy regions 100, the microneedles 11 located at the center or corners of the array are not convenient to form parallelogram-shaped energy regions 100. Therefore, in this embodiment, a trapezoidal energy region 100 is also provided. In the trapezoidal energy region 100, all positive polarity microneedles 11 and all negative polarity microneedles 11 are located on opposite sides of the trapezoid that are parallel to each other. Since the number of microneedles 11 in the two microneedle groups 10 is different, the microneedles 11 at the center or corners of the array can be used to form the trapezoidal energy region 100, thereby improving the convenience of dividing each energy region 100 of the microneedle array.

[0049] In one embodiment of this application, the energy zone 100 is designed as an isosceles trapezoid. This arrangement helps to improve the concentration and uniformity of radiofrequency energy, thereby further improving the therapeutic effect.

[0050] Referring to Figures 1 to 4, in one embodiment of this application, at least one energy region 100 is formed by a microneedle group 10 and a microneedle 11, and the shape of the energy region 100 is triangular.

[0051] When the area of ​​the energy region 100 is large, meaning it contains a large number of microneedles 11, the problem of higher temperatures at the center of the energy region 100 can still occur. Since a trapezoidal energy region 100 needs to contain at least 5 microneedles 11, placing a trapezoidal energy region 100 at the center or corners of the microneedle array may affect the overall temperature uniformity. Alternatively, when the number of microneedles in the array is large, as shown in Figure 4 (a 7*7 microneedle matrix), the combination of trapezoids and parallelograms may not be able to cover all the microneedles 11, and heating blind spots may easily appear around the microneedle array.

[0052] Therefore, in this embodiment, the applicant also designed a triangular energy region 100, which is formed by a microneedle group 10 and another microneedle 11. The number of microneedles 11 in the microneedle group 10 can be 2, 3, etc., to cover the heating blind zone. This arrangement not only improves the uniformity of radio frequency energy, but also effectively optimizes the arrangement of microneedles 11, making it easier to divide the energy region 100.

[0053] Referring to Figures 1 to 4, in one embodiment of this application, multiple microneedles 11 are arranged in a square lattice matrix, that is, multiple microneedles 11 are arranged in a multi-row, multi-column configuration, with the same spacing between every two adjacent microneedles 11. This arrangement provides a more regular treatment area, and when performing large-area treatment, it facilitates medical personnel to achieve more uniform radiofrequency and drug injection within the treatment area by repeatedly moving the radiofrequency injection microneedle structure. In this embodiment, the applicant proposes two matrix arrangements of radiofrequency injection microneedles: 5*5 and 7*7. Both arrays employ parallelogram, trapezoidal, and triangular energy regions 100. By controlling the sequential connection of different energy regions 100 to the power supply, uniform treatment within the treatment area is achieved.

[0054] Furthermore, in both matrix-type microneedle arrays, the energy region 100 is arranged according to the following rule: microneedles 11 located at the center of the matrix are preferentially used to form trapezoidal energy regions 100; microneedles 11 located around the perimeter of the matrix are preferentially used to form triangular energy regions 100; and microneedles 11 in other positions are preferentially arranged in parallelograms. This arrangement not only improves the uniformity of radio frequency energy but also optimizes the arrangement of energy regions 100.

[0055] As shown in Figures 2 and 4, in one embodiment of this application, each microneedle 11 participates in forming at least one energy region 100, and the energy regions 100 do not overlap with each other.

[0056] In this embodiment, some microneedles 11 participate in forming one energy region 100, and some microneedles 11 participate in forming two or more energy regions 100. Specifically, as shown in Figure 4, the microneedles 11 located at the center of the array participate in forming one energy region 100, while some of the microneedles 11 located around the array participate in forming two energy regions 100, that is, two adjacent smaller energy regions 100 combine to form a larger energy region 100.

[0057] The reason for this setting is that although different energy zones 100 are connected to the power supply sequentially to generate radio frequency energy to improve temperature uniformity, in actual treatment, the interval between the alternating power supply of different energy zones 100 is short. Therefore, the temperature of one energy zone 100 that has been disconnected from the power supply may not have completely cooled down before another energy zone 100 has been connected to the power supply, which will affect the temperature between different energy zones 100.

[0058] Therefore, in this embodiment, the central microneedle 11 participates in forming an energy zone 100. That is, multiple energy zones 100 located in the central region of the matrix are spaced apart to reduce temperature interference between adjacent energy zones 100, thereby improving the temperature uniformity of the treatment area. The energy zones 100 located at the edge of the array are less affected by the temperature of other energy zones 100. Therefore, the energy zones 100 located around the array can be arranged adjacently or spaced apart, depending on the actual temperature of different locations in the microneedle matrix as measured.

[0059] At the same time, the energy zones 100 are set to not overlap with each other, avoiding the same area being acted on by radio frequency energy multiple times, thereby further improving the temperature uniformity of different locations in the treatment area.

[0060] Referring to Figures 1 to 4, in one embodiment of this application, each microneedle 11 of each microneedle group 10 is located in adjacent rows and columns of a square lattice matrix.

[0061] In this embodiment, each microneedle 11 of each microneedle group 10 is located in adjacent rows and columns of a square lattice matrix. That is, in the actual square lattice array, the positive and negative microneedles 11 are alternately arranged in each row and column. This staggered layout can effectively reduce the problem of low radiofrequency energy density and low temperature caused by microneedles 11 of the same polarity on the four sides of the matrix, thereby improving the radiofrequency energy coverage and treatment uniformity of the energy region 100.

[0062] As shown in Figures 1 to 4, in one embodiment of this application, the center connecting lines of each microneedle 11 in the plurality of microneedle groups 10 are parallel or perpendicular to each other.

[0063] In this embodiment, the center connecting lines of each microneedle 11 in the multiple microneedle groups 10 are parallel or perpendicular to each other. This design makes the layout of the energy zones 100 more regular, avoids the problem of overlapping between different energy zones 100, and thus improves the temperature uniformity in the treatment area.

[0064] Referring to Figures 5 and 6, in one embodiment of this application, each microneedle 11 of each microneedle group 10 is located in the same row or column of a square lattice matrix, and each microneedle 11 of the microneedle group 10 is arranged adjacent to each other. This layout design allows microneedles 11 in the same column to be connected to the same pole of the power supply, thereby improving the convenience of connecting the microneedle array circuit, reducing the occurrence of intersecting circuits or wires, and improving the aesthetics of the microneedle array circuit layout.

[0065] In one embodiment of this application, at least some of the microneedles 11 are injection needles. The injection needles are connected to an external liquid injection device, which sequentially makes the microneedles 11 of each energy zone 100 electrically connected to an external power source and pushes the liquid from the external liquid injection device to flow to the injection needle, so that the energy zone 100 is used to emit radio frequency energy and inject liquid in sequence.

[0066] In this embodiment, the injection needle is a hollow needle, and an external injection device injects the treatment solution into the skin through the injection needle to achieve the purpose of drug injection therapy. Simultaneously, each microneedle 11 is electrically connected to an external power source, which can also achieve the purpose of radiofrequency therapy. Therefore, the radiofrequency injection microneedle structure of this application can be used for both drug injection therapy and radiofrequency therapy. However, during drug injection therapy, the treatment solution may connect two microneedles 11 with different polarities, leading to a radiofrequency short circuit and affecting the radiofrequency therapy effect; in addition, the radiofrequency energy generated by radiofrequency therapy can also electrolyze the treatment solution, thus affecting the effect of drug injection therapy. Therefore, this application adopts a sequential mode for radiofrequency therapy and drug injection therapy of the microneedles 11 in each energy zone 100, that is, separating radiofrequency therapy and drug injection therapy in time, thereby ensuring the effectiveness of both drug injection therapy and radiofrequency therapy.

[0067] In one embodiment of this application, the polarity of each injection needle in each energy region 100 is the same, and the injection needles in the microneedle array are evenly distributed and not adjacent to each other.

[0068] In this embodiment, during drug injection treatment, the treatment fluid accumulates around the injection needle within a short time. Therefore, the polarity of each injection needle in each energy zone 100 is set to be the same. This reduces the energy density of radiofrequency energy at the treatment fluid during radiofrequency treatment, thereby reducing the impact of radiofrequency energy on drug injection treatment. Furthermore, the injection needles in the entire microneedle array are evenly distributed and arranged to be non-adjacent to improve the uniformity of drug injection treatment.

[0069] In one embodiment of this application, a plurality of microneedles 11 in each energy region 100 are located on the outer periphery of the energy region 100.

[0070] In this embodiment, since the energy zone 100 is composed of two microneedle groups 10 or one microneedle group 10 and one microneedle 11, radio frequency energy is generated between microneedles 11 of different polarities. Therefore, the energy density near the center of the energy zone 100 is higher than the energy density at the periphery of the energy zone 100. Thus, multiple microneedles 11 in the energy zone 100 are positioned at the periphery of the energy zone 100, avoiding placement of microneedles 11 within the energy zone 100. This prevents one energy zone 100 from being surrounded or partially overlapping with another, thereby improving the uniformity of the radio frequency energy effect. Furthermore, when the injection needle injects the treatment solution into the skin, the treatment solution is also distributed at the periphery of the energy zone 100, thereby reducing the degree of decomposition of the drug injection treatment solution by the radio frequency energy.

[0071] This application also proposes a therapeutic device, which includes a housing and a radiofrequency injection microneedle structure. The specific structure of the radiofrequency injection microneedle structure is as described in the above embodiments. Since this therapeutic device adopts all the technical solutions of all the embodiments of the radiofrequency injection microneedle structure described above, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, and will not be described in detail here. The needle plate 20 is movably disposed in the housing, and moving the needle plate 20 causes the microneedle 11 to extend out of the housing.

[0072] In this embodiment, the needle plate 20 is movably connected to the housing of the treatment device, allowing medical personnel to push the needle plate 20 to extend or retract the microneedles 11 into the housing as needed to adjust the treatment depth, thus providing greater operational convenience. The arrangement and electrical connection of the microneedles 11 follow the layout pattern of the above embodiments, ensuring uniform distribution of radiofrequency energy and drug injection.

[0073] The above description is merely an exemplary embodiment of this application and does not limit the patent scope of this application. Any equivalent structural transformations made based on the technical concept of this application and the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this application.

Claims

1. A radiofrequency injection microneedle structure, wherein, The radiofrequency injection microneedle structure includes: Needle plate; Multiple microneedles are mounted on the needle plate and arranged in an array at intervals. At least two of the microneedles are electrically connected to form a microneedle group. The two microneedle groups, or one microneedle group and another microneedle, are respectively connected to the positive and negative terminals of an external power source to enclose and form an energy zone. At least two energy zones are formed, and the at least two energy zones alternately treat different treatment areas.

2. The radiofrequency injection microneedle structure as described in claim 1, wherein, At least one of the energy regions is formed by two microneedle groups, the two microneedle groups having the same number of microneedles, and the shape of the energy region is a parallelogram with unequal diagonals.

3. The radiofrequency injection microneedle structure as described in claim 1, wherein, At least one of the energy regions is formed by two microneedle groups, and the number of microneedles in the two microneedle groups is different, and the shape of the energy region is trapezoidal.

4. The radiofrequency injection microneedle structure as described in claim 1, wherein, At least one of the energy regions is formed by a group of microneedles and a microneedle, and the energy region is triangular in shape.

5. The radiofrequency injection microneedle structure as described in any one of claims 1 to 4, wherein, The microneedles are arranged in a square lattice matrix.

6. The radiofrequency injection microneedle structure as described in claim 5, wherein, Each of the microneedles participates in the formation of at least one of the energy regions, and the energy regions do not overlap with each other.

7. The radiofrequency injection microneedle structure as described in claim 5, wherein, Each of the microneedles in each group of microneedles is located in adjacent rows and columns of the square lattice matrix.

8. The radiofrequency injection microneedle structure as described in claim 7, wherein, The center connecting lines of each of the microneedles in the plurality of microneedle groups are parallel or perpendicular to each other.

9. The radiofrequency injection microneedle structure as described in claim 5, wherein, Each microneedle in each microneedle group is located in the same row or column of the square lattice matrix, and each microneedle in the microneedle group is arranged adjacent to each other.

10. The radiofrequency injection microneedle structure according to any one of claims 1 to 4, wherein, At least some of the microneedles are injection needles, which are connected to an external liquid injection device so that the energy zone is used sequentially to emit radio frequency energy and inject liquid.

11. The radiofrequency injection microneedle structure as described in claim 10, wherein, The polarity of each injection needle in each energy region is the same, and the injection needles in the microneedle array are evenly distributed and not adjacent to each other.

12. The radiofrequency injection microneedle structure according to any one of claims 1 to 4, wherein, Each of the multiple microneedles in each energy region is located on the periphery of the energy region.

13. A therapeutic device, wherein, The therapeutic device includes a housing and a radiofrequency injection microneedle structure as described in any one of claims 1 to 12; the needle plate is movably disposed within the housing, and moving the needle plate causes the microneedle to extend out of the housing.