Bipolar radio frequency microneedle structure, heating method, and radio frequency therapy instrument
Patent Information
- Application Number
- PCT/CN2026/074941
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2025-03-24
- Filing Date
- 2026-01-26
- Publication Date
- 2026-10-01
Smart Images
Figure CN2026074941_01102026_PF_FP_ABST
Abstract
Description
Bipolar radiofrequency microneedle structure, heating method and radiofrequency therapy device
[0001] Related applications
[0002] This application claims priority to Chinese patent application No. 202510350883.7, filed on March 24, 2025, the entire contents of which are incorporated herein by reference. Technical Field
[0003] This application relates to the field of radiofrequency therapy technology, and in particular to a bipolar radiofrequency microneedle structure, heating method, and radiofrequency therapy device. Background Technology
[0004] Radiofrequency microneedling is a cosmetic treatment that uses tiny needles inserted into the skin, combined with radiofrequency energy, to stimulate collagen production and regeneration. This technique is commonly used to improve skin appearance, such as reducing wrinkles, improving uneven skin tone, minimizing pores, and treating acne scars.
[0005] The shortcomings of existing radiofrequency microneedles are as follows: uneven distribution of radiofrequency microneedles results in uneven output of radiofrequency energy, thus leading to uneven treatment effects; simultaneous treatment with multiple microneedles can cause edge effects of radiofrequency, with high energy at the edges, which can pose certain dangers; simultaneous output of radiofrequency microneedles results in strong pain and a poor user experience.
[0006] The above content is only used to help understand the technical methods of this application and does not represent an admission that the above content is prior art. Summary of the Invention
[0007] The main purpose of this application is to provide a bipolar radiofrequency microneedle structure, heating method, and radiofrequency therapy device, which aims to solve the technical problems of uneven radiofrequency energy output and radiofrequency edge effect during radiofrequency microneedle therapy.
[0008] To achieve the above objectives, this application proposes a bipolar radio frequency microneedle structure, which includes: multiple regions; the multiple regions include multiple rectangular regions, each rectangular region containing two adjacent sets of microneedle electrode groups combined into a rectangle, each microneedle electrode group containing multiple microneedle electrodes that are continuous in the horizontal or vertical direction, and the microneedle electrodes within each microneedle electrode group are electrically connected together; one set of the two sets of microneedle electrode groups in each region is connected to the radio frequency positive electrode, and the other set is connected to the radio frequency negative electrode.
[0009] In one embodiment, the plurality of regions includes a plurality of non-rectangular regions; the non-rectangular regions contain two sets of microneedle electrode sets, one set arranged in a row and the other set arranged in a column; the microneedle electrode sets in the rectangular regions are arranged parallel to one set of microneedle electrodes in the non-rectangular regions and perpendicular to the other set of microneedle electrodes in the non-rectangular regions.
[0010] In one embodiment, each row of microneedle electrodes is uniformly and symmetrically divided into two groups of microneedle electrode groups with the vertical center line as the axis of symmetry; the rectangular area contains two groups of microneedle electrode groups that are in different rows and are adjacent to each other.
[0011] In one embodiment, the matrix of microneedle electrodes has an odd number of rows; the bipolar radio frequency microneedle structure includes two remaining microneedle electrode groups, which are not combined with adjacent microneedle electrode groups to form a rectangular region, and the two remaining microneedle electrode groups are located in the first and last rows of the matrix, respectively.
[0012] In one embodiment, the middle column of microneedle electrodes is longitudinally divided into two groups of non-uniform longitudinal microneedle electrode groups; the non-rectangular region includes a group of remaining microneedle electrode groups and the group of longitudinal microneedle electrode groups furthest from the remaining microneedle electrode groups.
[0013] In addition, to achieve the above objectives, this application also proposes a bipolar radio frequency microneedle heating method, the method comprising: sequentially arranging multiple regions; activating the microneedle electrodes of the regions according to the arrangement order at preset time intervals, wherein activation means controlling two sets of microneedle electrodes within the region, one set connected to radio frequency positive electricity and the other set connected to radio frequency negative electricity.
[0014] In one embodiment, the step of activating the microneedle electrodes in the order of arrangement at preset time intervals includes: after the preset time, the activated region is the furthest from the previously activated region among all the unactivated regions, wherein two regions activated in sequence are not adjacent.
[0015] In one embodiment, the plurality of regions further includes a plurality of non-rectangular regions, each non-rectangular region comprising two sets of microneedle electrode groups, one set arranged in a row and the other in a column. The step of activating the microneedle electrodes of the regions in the order of arrangement at preset time intervals includes: activating any one of the non-rectangular regions; activating the rectangular regions sequentially in the order of arrangement at the preset time intervals; and activating the remaining non-rectangular regions after the rectangular regions have been activated.
[0016] In one embodiment, the step of activating the rectangular regions sequentially according to the arrangement order at preset time intervals includes: after the preset time interval, activating any one of the rectangular regions; after the preset time interval, activating another rectangular region of the rectangular region symmetrical to the center point of the microneedle electrode matrix.
[0017] In one embodiment, after the step of activating one of the rectangular regions and, after the preset time, activating another rectangular region symmetrical to the center point of the microneedle electrode matrix, the method further includes: activating the rectangular region in a different column that is furthest from the rectangular region when the other rectangular region at the symmetrical point has been activated.
[0018] In addition, to achieve the above objectives, this application also proposes a radiofrequency therapy device, which includes the bipolar radiofrequency microneedle structure as described above.
[0019] This application discloses a bipolar radiofrequency microneedle structure, a heating method, and a radiofrequency therapy device, relating to the field of radiofrequency therapy technology. The bipolar radiofrequency microneedle structure includes: The bipolar radiofrequency microneedle structure comprises multiple regions; each region includes multiple rectangular regions, each rectangular region containing two adjacent sets of microneedle electrode groups combined into a rectangle. Each microneedle electrode group contains multiple microneedle electrodes that are continuously connected laterally or longitudinally, and the microneedle electrodes within each group are electrically connected together; one set of the two sets of microneedle electrode groups in each region is connected to a positive radiofrequency electrode, and the other set is connected to a negative radiofrequency electrode. The radiofrequency microneedles are arranged in a rectangular array, connecting multiple adjacent microneedle electrodes together to form a microneedle electrode group. When combining two sets of microneedle electrode groups, the rectangular group is the primary group, and the remaining non-rectangular groups are combined longitudinally and laterally according to non-adjacent groups. This divides the treatment surface on the treatment head into multiple rectangular regions and multiple non-rectangular regions, avoiding pain during treatment. Simultaneously, different regions can be heated separately, solving the edge effect of radiofrequency electrode energy. Attached Figure Description
[0020] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.
[0021] To more clearly illustrate the technical methods 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, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0022] Figure 1 is a schematic diagram of the structure provided in Embodiment 1 of the bipolar radio frequency microneedle device of this application;
[0023] Figure 2 is a diagram of the bipolar microneedle provided in Embodiment 1 of the bipolar radio frequency microneedle device of this application;
[0024] Figure 3 is a rectangular area diagram provided in Embodiment 1 of the bipolar radio frequency microneedle device of this application;
[0025] Figure 4 is a schematic diagram of the structure provided in Embodiment 2 of the bipolar radio frequency microneedle device of this application;
[0026] Figure 5 is a structural schematic diagram of the bipolar radio frequency microneedle device provided in Embodiment 3 of this application;
[0027] Figure 6 is another structural schematic diagram provided in Embodiment 3 of the bipolar radio frequency microneedle device of this application;
[0028] Figure 7 is another structural schematic diagram provided in Embodiment 3 of the bipolar radio frequency microneedle device of this application;
[0029] Figure 8 is a flowchart of the bipolar radio frequency microneedle heating method provided in Embodiment 1 of this application;
[0030] Figure 9 is another flowchart provided in Embodiment 1 of the bipolar radio frequency microneedle heating method of this application;
[0031] Figure 10 is a first thermal image provided in Embodiment 1 of the bipolar radio frequency microneedle heating method of this application;
[0032] Figure 11 is a second thermal image provided in Embodiment 1 of the bipolar radio frequency microneedle heating method of this application;
[0033] Figure 12 is a third thermal image provided in Embodiment 1 of the bipolar radio frequency microneedle heating method of this application;
[0034] Figure 13 is a fourth thermal image provided in Embodiment 1 of the bipolar radio frequency microneedle heating method of this application;
[0035] Figure 14 is the fifth thermal image provided in Embodiment 1 of the bipolar radio frequency microneedle heating method of this application;
[0036] Figure 15 is the sixth thermal imaging image provided in Embodiment 1 of the bipolar radio frequency microneedle heating method of this application;
[0037] Figure 16 is the seventh thermal imaging image provided in Embodiment 1 of the bipolar radio frequency microneedle heating method of this application;
[0038] Figure 17 is the eighth thermal imaging image provided in Embodiment 1 of the bipolar radio frequency microneedle heating method of this application;
[0039] Figure 18 is the ninth thermal imaging image provided in Embodiment 1 of the bipolar radio frequency microneedle heating method of this application;
[0040] Figure 19 is the tenth thermal imaging image provided in Embodiment 1 of the bipolar radio frequency microneedle heating method of this application.
[0041] Explanation of icon numbers:
[0042]
[0043] 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
[0044] It should be understood that the specific embodiments described herein are merely illustrative of the technical methods of this application and are not intended to limit this application.
[0045] To better understand the technical methods of this application, a detailed description will be provided below in conjunction with the accompanying drawings and specific implementation methods.
[0046] Radiofrequency microneedling is a cosmetic treatment technique, belonging to the category of non-surgical physical therapy. It involves inserting tiny needles into the skin and applying radiofrequency energy to stimulate collagen production and regeneration. This technique is commonly used to improve skin appearance, such as reducing wrinkles, improving uneven skin tone, minimizing pores, and treating acne scars.
[0047] The shortcomings of existing radiofrequency microneedles are as follows: uneven distribution of radiofrequency microneedles results in uneven output of radiofrequency energy, thus leading to uneven treatment effects; simultaneous treatment with multiple microneedles can cause edge effects of radiofrequency, with high energy at the edges, which can pose certain dangers, and reduced energy can lead to insufficient energy at the center; simultaneous output of all radiofrequency microneedles results in strong pain and a poor user experience.
[0048] Based on this, the present application provides a bipolar radio frequency microneedle heating method. Referring to Figure 1, Figure 1 is a structural schematic diagram of the first embodiment of the bipolar radio frequency microneedle heating method of the present application.
[0049] This application discloses a bipolar radiofrequency microneedle structure, a heating method, and a radiofrequency therapy device, relating to the field of radiofrequency therapy technology. The bipolar radiofrequency microneedle structure includes: multiple regions; the multiple regions include multiple rectangular regions, each rectangular region containing two adjacent sets of microneedle electrode groups arranged in a rectangle; each microneedle electrode group contains multiple microneedle electrodes that are continuous laterally or longitudinally, and the microneedle electrodes within each group are electrically connected together; one set of the two sets of microneedle electrode groups in each region is connected to a radiofrequency positive electrode, and the other set is connected to a radiofrequency negative electrode.
[0050] In one embodiment, the multiple regions also include multiple non-rectangular regions; each non-rectangular region contains two sets of microneedle electrode groups, one arranged in a row and the other in a column; the microneedle electrode groups within the rectangular regions are arranged parallel to one set of microneedle electrodes in the non-rectangular regions and perpendicular to the other set of microneedle electrodes in the non-rectangular regions. In some embodiments, the two sets of microneedle electrode groups in the row and column of the non-rectangular regions are spaced apart and not adjacent to each other, in order to mitigate the uneven distribution of treatment effects caused by uneven pattern shape (such as asymmetry).
[0051] Radiofrequency microneedles are arranged in a rectangular array. Multiple adjacent microneedle electrodes are connected together to form a group of microneedle electrodes. When combining two groups of microneedle electrodes, the rectangular shape is the main one, and the remaining non-rectangular ones are combined in a horizontal and vertical arrangement according to the non-adjacent groups. In this way, the treatment surface on the treatment head is divided into multiple rectangular areas and multiple non-rectangular areas, which can avoid the problem of pain during treatment. At the same time, different areas can be heated separately, which can solve the edge effect problem when all microneedle electrodes emit radiofrequency electrode energy at the same time.
[0052] Radiofrequency microneedles can be arranged in an N×N or N×(N+1) rectangular pattern on the treatment surface, with layouts of 2×2, 3×3, 4×4...N×N, or 2×3, 3×4, 4×5...N×(N+1). Treating the radiofrequency microneedles in sections on the treatment surface can reduce pain during treatment.
[0053] Taking 49 microneedles as an example, the arrangement pattern shown in Figure 1 is proposed. Similarly, specifications such as 4-needle, 9-needle, 16-needle, 25-needle, 36-needle, 49-needle, and N-needle can all adopt a 2×2, 2×3, 2×4, or 2×N rectangular array of heterogeneous electrodes to construct several small heating areas within the rectangular array. This avoids edge effects during radiofrequency treatment. Edge effects refer to the phenomenon where the skin tissue near the center of the electrode is heated more significantly, while the edge areas are heated relatively less. This can lead to uneven heating of the skin tissue, potentially affecting the treatment effect. A 2×2 or 2×3 rectangular arrangement can be used to maximize the number of segmented areas, reducing instantaneous pain. Furthermore, it minimizes the creation of new small-scale edge effects within the segmented rectangular areas—that is, reducing or eliminating the number of microneedles in the central area between the four rectangular corners or the middle of the long side, ensuring that the current received by each microneedle electrode is as equal as possible.
[0054] Figure 2 shows a simulation experiment of the electrodes paired together. During treatment, the bipolar radiofrequency microneedles form a circuit between two adjacent microneedle electrodes, eliminating the need for additional ground or neutral electrodes. The microneedle electrodes are inserted into the skin, allowing for a more uniform distribution of radiofrequency energy within the skin and reducing thermal damage to the epidermis. By releasing radiofrequency energy, the bipolar radiofrequency microneedles can stimulate the proliferation of subcutaneous collagen, thereby improving skin texture. Figure 3 shows a rectangular area; the black area represents the positive electrode 2 of the microneedle, the white area represents the negative electrode 3, and the central area is the main area of action for the radiofrequency energy.
[0055] The lateral distance between the microneedle electrodes is a first preset distance, and the longitudinal distance between the microneedle electrodes is a second preset distance.
[0056] The arrangement of radiofrequency microneedles is primarily a dot matrix pattern, meaning the microneedles are arranged at specific intervals and densities on the syringe head. Radiofrequency microneedles typically come in various specifications with 16, 25, or 49 needles. The array density of the microneedles refers to the number and spacing of the microneedles; different treatment needs require different density selections. When the microneedles output radiofrequency, the tissue area affected by each pair of microneedles is S. Therefore, the spacing of the microneedles can be designed with a length r, width h, and diagonal length z. The uniformity of this area is highly dependent on the electrode arrangement and connection. The spacing between the radiofrequency microneedles must be reasonable, avoiding interference with each other's radiofrequency signals while ensuring effective coverage of the target area.
[0057] In this embodiment, parallel microneedle electrodes are connected to form a group of microneedle electrodes of the same polarity, and adjacent columns of microneedle electrodes of different polarities form a rectangular region. This rectangular region includes both positive and negative radiofrequency polarities. Multiple microneedle electrodes arranged horizontally or vertically form a group of microneedle electrodes of the same polarity. Microneedle electrode groups of different polarities are then combined, primarily in rectangular groups. The remaining non-rectangular groups are combined horizontally and vertically according to their non-adjacent orientations. This divides the entire rectangular radiofrequency microneedle treatment head into several small rectangular loop regions for zoned heating, effectively solving the problems of intense pain, uneven radiofrequency energy, and radiofrequency edge effects caused by simultaneous output. Furthermore, setting multiple horizontally or vertically continuous microneedle electrodes as a group of microneedle electrodes of the same polarity allows for a more rational arrangement of circuit traces, avoiding circuit complexity and signal interference problems caused by interlaced positive and negative electrode traces.
[0058] Based on the first embodiment of this application, in the second embodiment of this application, the same or similar content as the first embodiment can be referred to the above description, and will not be repeated hereafter.
[0059] Based on this, please refer to Figure 4, which is a structural schematic diagram of the bipolar radio frequency microneedle device provided in Embodiment 2 of this application.
[0060] The arrangement of the microneedle electrode group is as follows: with the vertical center line as the axis of symmetry, each row of microneedle electrodes is evenly and symmetrically divided into two groups of microneedle electrode groups; the rectangular area contains two groups of microneedle electrode groups that are not in the same row but are adjacent.
[0061] Taking 49 microneedle electrodes as an example, the microneedle electrodes are divided into several regions. Based on a row, three microneedle electrodes are connected together to form a microneedle electrode group, with each group sharing the same polarity. Each row of microneedle electrodes is divided into two interconnected groups of 3×2. These groups are combined with adjacent groups, forming a rectangular region (as shown in Figure 4). Each rectangular region includes two groups of microneedle electrodes; one group is connected to the positive RF electrode, and the other to the negative RF electrode. Within a certain spacing between the microneedle electrodes, the positive and negative loop currents generated by the RF working electrodes ensure that the heat dissipation from the rectangular region heated by the electrode energy completely covers the edges and overflows.
[0062] The 49 microneedle electrodes are divided into six rectangular areas. This layout allows the 49 needle areas to be divided into several regions with positive and negative polarities, enabling time-sharing treatment of different regions. This allows for individual treatment of small areas, resulting in more uniform treatment.
[0063] The matrix composed of all microneedle electrodes has an odd number of rows, which results in two remaining groups after dividing the rectangular area according to each pair of adjacent microneedle electrode groups. Therefore, the bipolar radio frequency microneedle structure contains two remaining microneedle electrode groups. The two remaining microneedle electrode groups are not combined with adjacent microneedle electrode groups to form a rectangular area. The two remaining microneedle electrode groups are located in the first and last rows of the matrix, respectively, and are not in the same row.
[0064] The 49 microneedle electrodes can be divided into 14 horizontal microneedle electrode groups. The two microneedle electrode groups above and below each other are combined to form a rectangular area. The two extra microneedle electrode groups are the first and second microneedle electrode groups. The first microneedle electrode group 100 is distributed in the first row, and the second microneedle electrode group 200 is distributed in the last row.
[0065] The middle column of microneedle electrodes is divided into two uneven longitudinal microneedle electrode groups; the non-rectangular area contains a group of remaining microneedle electrode groups and a group of longitudinal microneedle electrode groups farthest from the remaining microneedle electrode groups.
[0066] Taking 49 microneedle electrodes as an example, the remaining fourth column of microneedle electrodes is divided into two vertical microneedle electrode groups: the third microneedle electrode group 300, containing 3 microneedle electrodes, and the fourth microneedle electrode group 400, containing 4 microneedle electrodes. In an odd-numbered needle arrangement, there will be two extra needles, namely the two microneedle electrode groups in the middle column of the electrode matrix. The two middle vertical microneedle electrode groups combine with the group of microneedle electrodes furthest from them to form a non-rectangular area. This is because if the middle electrode were to use a matrix heating method with adjacent electrodes, the temperature in the middle would be higher than in other areas, and the overall heating temperature would not be controlled. Therefore, the two middle vertical microneedle electrode groups can only combine with the group of horizontal microneedle electrodes furthest from them for bipolar heating. The non-rectangular area does not need to produce any specific heating pattern; it only needs the microneedle electrodes to have radio frequency energy output. The first microneedle electrode group 100 and the fourth microneedle electrode group 400 are combined into a non-rectangular region, and the second microneedle electrode group 200 and the third microneedle electrode group 300 are combined into a non-rectangular region. The temperature in the middle position is compensated by heating from the adjacent other electrode combination matrix, so that the temperature in the middle will not be too high, as shown in Figure 6.
[0067] In one embodiment, the staggered arrangement of the opposite polarity electrodes of the radio frequency microneedles can create small heating areas with other patterns. Flipping the microneedle array by 90 degrees is equivalent to connecting multiple consecutive needle electrodes in the vertical direction into a group of microneedle electrodes.
[0068] In this embodiment, multiple microneedle electrodes are connected in a horizontal or vertical sequence to form a group of microneedle electrodes. Then, two adjacent groups of microneedle electrodes can be combined to form a rectangular region. The remaining microneedle electrode groups are combined horizontally and vertically according to their distance to form non-rectangular regions. During radio frequency (RF) operation, the magnetic field between the two opposite-polarity electrodes in this rectangular region can be fully utilized. Each rectangular and non-rectangular region includes two groups of microneedle electrodes, one connected to the positive RF electrode and the other to the negative RF electrode. Microneedles in the same row are connected to form a group of microneedles of the same polarity, and microneedles in adjacent columns form a group of microneedles of opposite polarity. This RF polarity layout forms the rectangular region of the RF microneedles. The remaining non-rectangular microneedle electrode groups are combined horizontally and vertically according to their non-adjacent group arrangement to form non-rectangular regions. Heating the non-rectangular regions prevents the temperature in the center of the treatment surface from becoming too high, ultimately achieving a stable thermal effect by instantaneously and uniformly heating the treatment surface.
[0069] Based on the first and / or second embodiments of this application, in the third embodiment of this application, the content that is the same as or similar to that in the first embodiment described above can be referred to the above description and will not be repeated hereafter.
[0070] Based on this, please refer to Figure 5, which is a structural schematic diagram of the bipolar radio frequency microneedle device provided in Embodiment 3 of this application.
[0071] As shown in Figure 5, when the number of needles in the radiofrequency microneedle electrode is 16, two adjacent horizontal microneedle electrodes are grouped into one microneedle electrode group. Each group of microneedle electrodes is electrically connected together. Two vertically adjacent horizontal microneedle electrode groups form a rectangular region. The radiofrequency microneedle electrodes on the treatment surface are divided into four rectangular regions: A, B, C, and D. Each rectangular region includes two microneedle electrode groups; one group is connected to the positive radiofrequency electrode, and the other to the negative radiofrequency electrode. During radiofrequency treatment, different rectangular regions are activated in a time-division manner.
[0072] As shown in Figure 6, taking 20 microneedle electrodes as an example, the first two microneedle electrodes are connected horizontally to form a group of microneedle electrodes, the last three microneedle electrodes are a group, and the upper and lower groups of microneedle electrodes are combined to form a rectangular area. The 20 microneedle electrodes are divided into four rectangular areas, each of which includes two groups of microneedle electrodes. One group of the two groups of microneedle electrodes is connected to the radio frequency positive electrode, and the other group is connected to the radio frequency negative electrode.
[0073] As shown in Figure 7, taking 25 microneedle electrodes as an example, two horizontal microneedle electrodes are connected to form a group of microneedle electrodes, and two vertical groups of microneedle electrodes are combined to form a rectangular area. The 25 microneedle electrodes are divided into four rectangular areas. The microneedle electrodes in the third column are divided into two vertical groups. One group contains two microneedle electrodes, and the other group contains three microneedle electrodes. The first microneedle electrode in the first row and the vertical group containing three microneedle electrodes form a non-rectangular area. The last microneedle electrode in the last row and the horizontal group containing three microneedle electrodes form a non-rectangular area. Each rectangular and non-rectangular area includes two groups of microneedle electrodes. One group of microneedle electrodes is connected to the radio frequency positive electrode, and the other group is connected to the radio frequency negative electrode.
[0074] In this embodiment, taking 16, 20, and 25 microneedle electrodes as examples, the microneedle electrodes are divided into rectangular and non-rectangular regions. The same applies to N×N and N×(N+1) microneedle electrode arrays. During radiofrequency treatment, different regions are activated in sequence, which can reduce the user's pain.
[0075] This application also provides a bipolar radio frequency microneedle heating method. Please refer to Figures 8 to 19 for an embodiment of the bipolar radio frequency microneedle heating method.
[0076] The executing entity in this embodiment can be a computing service device with data processing, network communication, and program execution functions, such as a tablet computer, personal computer, or mobile phone, or a host device of a radiofrequency treatment head capable of performing the above functions. The following description uses a controller for a radiofrequency microneedle electrode as an example to illustrate this embodiment and the subsequent embodiments.
[0077] Step S10: Arrange the multiple regions in sequence.
[0078] The region can consist of only rectangular areas. The microneedle electrodes on the rectangular radiofrequency microneedle treatment surface are divided into several rectangular areas. The multiple rectangular areas are arranged sequentially, and then time-division and zone-division power supply activation is performed. As shown in Figure 5, the microneedle electrodes on the treatment surface are divided into four rectangular areas, A, B, C, and D, and the four rectangular areas are arranged sequentially.
[0079] The treatment area can also include rectangular and non-rectangular areas. The microneedle electrodes on the rectangular radiofrequency microneedle treatment surface are divided into several rectangular and non-rectangular areas. These areas are arranged sequentially and then activated in a time-division and zone-based manner. As shown in Figure 7, the microneedle electrodes on the treatment surface are divided into four rectangular areas and two non-rectangular areas. These six areas are arranged sequentially and then activated according to the arrangement order. Controlling the treatment time effectively solves the edge effect of radiofrequency electrode energy. By controlling the orderly switching of radiofrequency polarity, the contact area is increased, improving the transmission efficiency of radiofrequency energy. Simultaneously, treating the treatment surface in a time-division and zone-based manner avoids the problem of pain during treatment.
[0080] Step S20: Activate the microneedle electrodes in the region according to the arrangement order at preset time intervals. Activation is achieved by connecting one group of microneedle electrodes in the control area to radio frequency positive electricity and the other group to radio frequency negative electricity.
[0081] For high-frequency alternating current, the polarity of the microneedle electrode group changes with the high frequency of the current. This is only to illustrate that this application is a bipolar scheme, so as to distinguish it from the unipolar scheme in which all microneedle electrode groups are connected to the same polarity.
[0082] Taking 49 microneedle electrodes as an example, six rectangular regions and two non-rectangular regions are sorted, and one region is activated at preset time intervals, as shown in Figures 8 to 19. These are thermal imaging images activated in chronological order. The order is: the non-rectangular region composed of the first microneedle electrode group 100 and the fourth microneedle electrode group 400, the sixth rectangular region 60, the first rectangular region 10, the fourth rectangular region 40, the third rectangular region 30, the fifth rectangular region 50, the second rectangular region 20, and the non-rectangular region composed of the third microneedle electrode group 300 and the second microneedle electrode group 200. Step S20 includes steps S201 to S204.
[0083] Step S30: After the preset time, the activated region is the furthest from the previously activated region among all the unactivated regions, wherein two regions activated in sequence are not adjacent.
[0084] There are various activation sequences that can ensure uniform temperature, but the following principles must be followed: the previously activated area should be furthest from the next activated area among the remaining unactivated areas, and two activated areas should not be adjacent. This is because activating two adjacent areas one after the other can cause the temperature in the vicinity to become too high, resulting in a stinging sensation for the customer.
[0085] Step S201: Activate any non-rectangular region.
[0086] Taking 49 microneedle electrodes as an example, any one non-rectangular region is activated, and the two non-rectangular regions are activated first and last, respectively.
[0087] Step S210: Activate the rectangular areas sequentially according to the arrangement order at preset time intervals.
[0088] Step S202: After the preset time, activate any one rectangular region, and after the preset time, activate another rectangular region symmetrical to the center point of the microneedle electrode matrix.
[0089] The activation principle is that each region is activated only once in an activation sequence, and the next activated rectangular region must be the furthest away. When arranging the order, after activating any rectangular region, the diagonal rectangular regions opposite that of any other rectangular region are activated. Therefore, after the sixth rectangular region (60) is activated for a preset time, the first rectangular region (10) is activated; after the fourth rectangular region (40) is activated for a preset time, the third rectangular region (30) is activated; and after the fifth rectangular region (50) is activated for a preset time, the second rectangular region (20) is activated.
[0090] Step S203: When another rectangular region at the symmetrical point has been activated, activate the rectangular region in a different column that is furthest from any of the rectangular regions.
[0091] When the diagonal rectangular area has already been activated, activate the rectangular area in a different column that is furthest from the original rectangular area. To maintain a uniform temperature on the treatment surface and prevent the user from experiencing a stinging sensation, symmetrical activation is required, not only symmetrical about the center point but also symmetrical about the center column. Therefore, when the sixth rectangular area has already been activated, after activating the first rectangular area for 10 preset times, the fourth rectangular area for 40 or the fifth rectangular area can be activated.
[0092] During activation, one microneedle electrode group in the rectangular area and the other in the non-rectangular area are connected to the positive electrode, and the other microneedle electrode group is connected to the negative electrode. The controller controls the electrodes of the two electrode groups. The rectangular area and the non-rectangular area can work normally and output radio frequency energy after one activation, without the need for repeated activation.
[0093] Step S204: After the rectangular region is activated, activate the remaining non-rectangular region.
[0094] In the simulation experiment, zoned and timed activation reduced the client's stinging sensation and ensured uniform radiofrequency energy output from the microneedle electrodes. The non-rectangular area of the central combination of horizontal and vertical electrode groups reduced edge effects, significantly lowering the central temperature of the treatment surface. As shown in Figure 19, after the microneedle electrodes on the treatment surface were fully activated, the temperature distribution on the treatment surface was uniform.
[0095] In one embodiment, as shown in FIG5, taking 16 microneedle electrodes as an example, the activation order of the rectangular region is ADBC according to the above method.
[0096] In one embodiment, the arrangement order can be a non-rectangular region combining the third microneedle electrode group 300 and the second microneedle electrode group 200, a fourth rectangular region 40, a third rectangular region 30, a sixth rectangular region 60, a first rectangular region 10, a fifth rectangular region 50, a second rectangular region 20, and a non-rectangular region combining the first microneedle electrode group 100 and the fourth microneedle electrode group 400.
[0097] In this embodiment, the microneedle electrodes on the rectangular radiofrequency microneedle treatment surface are divided into several rectangular and non-rectangular regions, and then time-division and zone-division power supply activation is performed. By controlling the treatment time, the edge effect of radiofrequency electrode energy can be effectively solved. By controlling the orderly switching of radiofrequency polarity, the contact area is increased and the transmission efficiency of radiofrequency energy is improved. At the same time, the treatment surface of the region is treated in a time-division and zone-division manner, which can avoid the problem of pain during treatment.
[0098] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.
[0099] The radiofrequency therapy device provided in this application employs the bipolar radiofrequency microneedle device described in the above embodiments. This addresses the problems of existing methods where simultaneous output of all radiofrequency microneedles results in intense pain and a poor user experience; uneven distribution of the radiofrequency microneedles leads to uneven radiofrequency energy output and uneven treatment effects; and simultaneous treatment with multiple microneedles can cause edge effects in radiofrequency, with high edge energy, posing certain technical risks. Compared to existing technologies, the beneficial effects of the radiofrequency therapy device provided in this application are the same as those of the bipolar radiofrequency microneedle device provided in the above embodiments, and other technical features of the bipolar radiofrequency microneedle device are the same as those disclosed in the methods of the above embodiments, and will not be repeated here.
[0100] The above are only some embodiments of this application and do not limit the patent scope of this application. All equivalent structural transformations made under the technical concept of this application and using the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included in the patent protection scope of this application.
Claims
1. A bipolar radio frequency microneedle structure, wherein, The bipolar radio frequency microneedle structure includes: multiple regions; The multiple regions include multiple rectangular regions, each rectangular region containing two adjacent sets of microneedle electrode groups that are combined to form a rectangle. Each microneedle electrode group contains multiple microneedle electrodes that are continuous in the horizontal or vertical direction, and the microneedle electrodes within each microneedle electrode group are electrically connected together. The two sets of microneedle electrodes in the area are connected to the radio frequency positive electrode and the radio frequency negative electrode, respectively.
2. The bipolar radio frequency microneedle structure of claim 1, wherein, The multiple regions include multiple non-rectangular regions; The non-rectangular region contains two sets of microneedle electrode groups, one set arranged in a row and the other set arranged in a column. The microneedle electrode group within the rectangular area is arranged parallel to a group of microneedle electrodes in the non-rectangular area, and perpendicular to another group of microneedle electrodes in the non-rectangular area.
3. The bipolar radio frequency microneedle structure of claim 2, wherein, With the vertical center line as the axis of symmetry, each row of microneedle electrodes is evenly and symmetrically divided into two groups of microneedle electrode groups; The rectangular region contains two sets of adjacent microneedle electrode groups in different rows.
4. The bipolar radio frequency microneedle structure of claim 3, wherein, The matrix composed of the microneedle electrodes has an odd number of rows; The bipolar radio frequency microneedle structure includes two remaining microneedle electrode groups. The two remaining microneedle electrode groups are not combined with adjacent microneedle electrode groups to form a rectangular region. The two remaining microneedle electrode groups are respectively located in the first and last rows of the matrix.
5. The bipolar radio frequency microneedle structure of claim 4, wherein, The middle column of microneedle electrodes is divided into two uneven longitudinal microneedle electrode groups. The non-rectangular region includes a set of remaining microneedle electrode groups and a set of longitudinal microneedle electrode groups that is furthest from the remaining microneedle electrode groups.
6. A bipolar radio frequency microneedle heating method, wherein, The bipolar radio frequency microneedle heating method is applied to the bipolar radio frequency microneedle structure as described in any one of claims 1 to 5, and the bipolar radio frequency microneedle heating method includes: The multiple regions are arranged sequentially. The microneedle electrodes in the control area are activated in a predetermined order at preset intervals. Activation means that one group of microneedle electrodes in the control area is connected to a positive radio frequency current and the other group is connected to a negative radio frequency current.
7. The bipolar radio frequency micro-needle heating method of claim 6, wherein, The step of activating the microneedle electrodes in the region at preset time intervals according to the arrangement order includes: After the preset time, the activated region is the furthest from the previously activated region among all the unactivated regions, wherein at least two regions activated in sequence are not adjacent.
8. The bipolar radio frequency micro-needle heating method of claim 6, wherein, The multiple regions also include multiple non-rectangular regions, which contain two sets of microneedle electrode groups, one set arranged in a row and the other set arranged in a column. The step of activating the microneedle electrodes in the region at preset time intervals according to the arrangement order includes: Activate any one of the non-rectangular regions; The rectangular regions are activated sequentially according to the predetermined arrangement at preset time intervals. After the rectangular region is activated, the remaining non-rectangular regions are activated.
9. The bipolar radio frequency micro-needle heating method of claim 8, wherein, The step of activating the rectangular regions sequentially according to the arranged order at preset time intervals includes: After the preset time, any one of the rectangular regions is activated, and after the preset time, another rectangular region symmetrical to the center point of the microneedle electrode matrix is activated.
10. The bipolar radio frequency micro-needle heating method of claim 9, wherein, After the step of activating one of the rectangular regions, and after the preset time, activating another rectangular region symmetrical to the center point of the microneedle electrode matrix, the method includes: When another rectangular region at the symmetrical point has been activated, activate the rectangular region that is furthest from the rectangular region in different columns.
11. A radio frequency treatment apparatus, wherein, The radiofrequency therapy device includes a bipolar radiofrequency microneedle structure as described in any one of claims 1 to 5.