Radio frequency microneedle treatment device

Abstract

The invention relates to the technical field of medical beauty medical instruments, and particularly discloses a radio frequency microneedle treatment device which comprises a radio frequency source, a control module, a frequency selection module and a microneedle array. The control module is electrically connected with the radio frequency source and is used for controlling the radio frequency source to output radio frequency energy with different frequencies; the frequency selection module comprises a plurality of frequency selection circuits, each frequency selection circuit comprises a first resonant cavity and a second resonant cavity which are opposite in polarity, each frequency selection circuit has a resonant frequency, and at least a part of the frequency selection circuits have different resonant frequencies; the microneedle array comprises a plurality of microneedle electrodes; the input end of each frequency selection circuit is connected with a radio frequency power supply, and the first resonant cavity and the second resonant cavity of each frequency selection circuit are connected with at least one microneedle electrode; the frequency of each different radio frequency energy output by the radio frequency source can be matched with the resonant frequency of different frequency selection circuits, and the radio frequency energy output by the radio frequency source is subjected to frequency matching through the frequency selection circuits and then is input to the corresponding microneedle electrodes through the first resonant cavity and the second resonant cavity.

Description

Technical Field

[0001] The present invention relates to the technical field of medical aesthetics medical devices, and in particular to a radio frequency microneedle treatment device. Background Art

[0002] Radiofrequency microneedle therapy is a micro-invasive radiofrequency dot matrix technology that uses tiny microneedles to accurately apply radiofrequency (RF) energy to target tissues at different depths. Specifically, multiple sets of parallel matrix points are set on the treatment head to form micrometer apertures on the epidermis, and the radiofrequency current is transmitted to the deep layer of the skin through these apertures. While vaporizing the surface layer of the skin, it flows through the deep layer of the skin, activating collagen regeneration and reconstruction effects, and comprehensively improving different skin problems from point to surface, solving aging problems such as large pores, roughness and dullness, sagging, and fine lines. It can be used for facial rejuvenation applications such as skin tightening and scar removal, and can also be used for acne treatment and axillary hyperhidrosis treatment.

[0003] Although there are many benefits to using fractional radio frequency technology for treatment, the existing fractional radio frequency has multiple positive and negative electrodes, which leads to uneven current distribution during the treatment process. During the treatment process, there is an uneven distribution of energy at each point, which can easily affect the treatment effect and increase the pain of the treated person, seriously affecting the treatment experience of the treated person.

[0004] Therefore, in order to make the energy distribution of each point in the treatment process uniform, the Chinese invention patent with application number "2020110695498" and name "Radio Frequency Microneedle Array Control Method, Device and Radio Frequency Microneedle Therapeutic Device" discloses: a radio frequency microneedle array control method, device and radio frequency microneedle therapeutic device, wherein the method includes the following steps: obtaining the coordinates corresponding to a plurality of microneedle electrodes; determining at least one set of target coordinates from the coordinates of a plurality of microneedle electrodes, wherein each set of target coordinates includes two target coordinates; sending a first control signal to the switch switching circuit to control the switch switching circuit to connect the target microneedle electrodes corresponding to at least one set of target coordinates to the power supply within a first preset time, and controlling the switch switching circuit to provide the first electrical polarity to any one of the target microneedle electrodes corresponding to each set of target coordinates, and the second electrical polarity to the other; returning to the step of determining at least one set of target coordinates from the coordinates corresponding to the plurality of microneedle electrodes. The radio frequency therapeutic device using this method has multiple transformed energy output points during radio frequency microneedle treatment, which is conducive to more uniform output.

[0005] The Chinese invention patent with application number "202011070193X" and name "Radio Frequency Microneedle Array Control Method, Device and Radio Frequency Microneedle Therapeutic Device" discloses: a radio frequency microneedle array control method, device and radio frequency microneedle therapeutic device, wherein the method includes the following steps: obtaining coordinates corresponding to a plurality of microneedle electrodes; determining at least one target coordinate from the coordinates corresponding to a plurality of microneedle electrodes; sending a control signal to the switch switching circuit to control the switch switching circuit to provide the target microneedle electrode corresponding to the target coordinate with either the first electrical polarity or the second electrical polarity within a first preset time length, and to provide the other of the first electrical polarity and the second electrical polarity to at least part of the microneedle electrodes in the microneedle array except the target microneedle electrode, wherein the polarity of the first electrical polarity is opposite to that of the second electrical polarity; and returning to the step of determining at least one target coordinate from the coordinates corresponding to the plurality of microneedle electrodes. The radio frequency therapeutic device using the method of the present invention has multiple transformed energy output points during radio frequency microneedle treatment, which is conducive to a more uniform energy output of the radio frequency microneedle therapeutic device.

[0006] In both of the above patents, the microneedle array is divided into multiple current loops with time-sharing conduction outputs through multiple switch switching circuits, so that the radio frequency therapeutic device has multiple energy output points during the radio frequency microneedle treatment process, which is conducive to a more uniform energy output of the radio frequency microneedle therapeutic device. However, the switch switching circuit needs to frequently disconnect the radio frequency signal to switch different microneedle electrodes for radio frequency energy output, and the implementation process is relatively cumbersome; and the relay used in the switch switching circuit is an active device, which requires chip control switching, has a slow response speed, and has the disadvantage of delayed output of radio frequency energy, which affects the efficiency and quality of radio frequency energy output treatment; in addition, active devices are more prone to failure, which affects the stability of radio frequency energy output, and thus affects the effect of radio frequency energy treatment. Summary of the invention

[0007] In view of the deficiencies in the prior art, the present invention provides a radio frequency microneedle treatment device, which can reduce the pain of the treated subject during the treatment process, improve the treatment experience of the treated subject, and solve the problems in the background technology.

[0008] The present invention provides a radio frequency microneedle treatment device, comprising a radio frequency source, a control module, a frequency selection module and a microneedle array;

[0009] The control module is electrically connected to the RF source and is used to control the RF source to output RF energy of different frequencies;

[0010] The frequency selection module includes a plurality of frequency selection circuits, each of which includes a first resonant cavity and a second resonant cavity with opposite polarities, each of which has a resonant frequency, and at least a portion of the frequency selection circuits have different resonant frequencies;

[0011] The microneedle array includes a plurality of microneedle electrodes;

[0012] The input end of each frequency selection circuit is connected to the radio frequency power supply, and the first resonant cavity and the second resonant cavity of each frequency selection circuit are connected to at least one of the microneedle electrodes;

[0013] The frequency of each different RF energy output by the RF source can be matched with the resonant frequency of the different frequency selection circuits. The RF energy output by the RF source is frequency matched by the frequency selection circuit and then input to the corresponding microneedle electrode through the first resonant cavity and the second resonant cavity.

[0014] As a preferred solution, the first resonant cavity and the second resonant cavity of each frequency selection circuit are respectively connected to microneedle electrodes at different positions of the microneedle array, and the control module controls the radio frequency source to output radio frequency energy having a frequency matching the resonant frequency corresponding to each frequency selection circuit at least once.

[0015] As a preferred solution, the first resonant cavity and the second resonant cavity of the frequency selection circuit with different resonant frequencies are evenly distributed and connected to the microneedle electrodes at different positions of the microneedle array.

[0016] As a preferred solution, the number of radio frequency energies of different frequencies output by the radio frequency source is the same as the number of the frequency selection circuits, and radio frequency energy of one frequency corresponds to a frequency selection circuit of a matching resonant frequency.

[0017] As a preferred solution, the number of radio frequency energies of different frequencies output by the radio frequency source is less than the number of the frequency selection circuits, and radio frequency energy of one frequency corresponds to multiple frequency selection circuits of matching resonant frequencies.

[0018] As a preferred solution, the number of the radio frequency sources is one or more;

[0019] When the number of the radio frequency source is one, one radio frequency source is connected to a plurality of frequency selection circuits, and outputs a plurality of radio frequency energies of different frequencies to the frequency selection circuits with matching resonant frequencies respectively;

[0020] When the number of the RF sources is multiple, each RF source can output RF energy of one frequency or multiple different frequencies. When each RF source outputs RF energy of one frequency, each RF source is connected to a corresponding frequency selection circuit whose resonant frequency matches it. When each RF source outputs RF energy of multiple frequencies, each RF source is connected to multiple frequency selection circuits and respectively outputs RF energy of multiple different frequencies to the frequency selection circuits whose resonant frequencies match them.

[0021] As a preferred solution, when there are multiple RF sources, at least one RF source is controlled to output RF energy of different frequencies to a frequency selection circuit with a matching resonant frequency.

[0022] As a preferred solution, the control module identifies the frequency selection circuit corresponding to each of the resonant frequencies, and controls the RF source to output frequency-matched RF energy at least once to all identified frequency selection circuits within one energy output cycle.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] The radio frequency microneedle treatment device of the present invention sends a control signal to the radio frequency source through a control module to control the radio frequency source to output radio frequency energy of different frequencies. The radio frequency source is connected to multiple frequency selection circuits, and each frequency selection circuit is connected to at least one microneedle electrode of the microneedle array through a first resonant cavity and a second resonant cavity with opposite polarities. Since each frequency selection circuit has a different resonant frequency, it can match the radio frequency energy of different frequencies output by the radio frequency source and output it to the corresponding microneedle electrode; therefore, the radio frequency energy of each frequency output by the radio frequency source will be output to the microneedle electrodes at different positions through different frequency selection circuits, and the difference in frequency will not affect the size of the radio frequency energy output, thereby ensuring that the radio frequency energy received by the microneedle electrodes at different positions at different times is the same, which is beneficial to improving the uniformity of energy distribution at each point during the treatment process, improving the treatment effect, and can reduce the pain of the treated object and improve the treatment experience effect of the treated object.

[0025] The frequency selection circuit of the present invention can realize the corresponding output of radio frequency energy of different frequencies to microneedle electrodes at different positions through its frequency selection characteristics, and there is no need to disconnect the radio frequency energy signal. The implementation process is relatively simple, the response speed is relatively fast, and there is no disadvantage of delayed output of radio frequency energy. In addition, the frequency selection circuit is a passive device with a low probability of failure, which can improve the stability and reliability of radio frequency energy output. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0027] Figure 1 It is a schematic diagram of the system structure of the radio frequency microneedle treatment device of the present invention;

[0028] Figure 2 It is a structural schematic diagram of the frequency selection circuit of the radio frequency microneedle treatment device of the present invention.

[0029] In the figure: 1. RF source; 11. power supply; 12. resonant circuit; 2. control module; 3. frequency selection module; 31. frequency selection circuit; 311. first resonant cavity; 312. second resonant cavity; 4. microneedle array. DETAILED DESCRIPTION

[0030] The following will disclose multiple embodiments of the present invention with drawings. For the purpose of clear description, many physical details will be described together in the following description. However, it should be understood that these physical details should not be used to limit the present invention. That is, in some embodiments of the present invention, these physical details are not necessary. In addition, for the purpose of simplifying the drawings, some conventional structures and components will be depicted in a simple schematic manner in the drawings.

[0031] In addition, in the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes, and do not specifically refer to the order or sequence, nor are they used to limit the present invention. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0032] See also Figure 1 As shown, the present invention provides a radio frequency microneedle treatment device, including a radio frequency source 1, a control module 2, a frequency selection module 3 and a microneedle array 4.

[0033] The control module 2 is electrically connected to the RF source 1, and is used to control the RF source 1 to output RF energy of different frequencies. Specifically, the RF source 1 may include a power supply 11 and a resonant circuit 12, and the resonant circuit 12 may convert the DC current output by the power supply 11 into a RF current. The control module 2 is electrically connected to the resonant circuit 12, and controls the resonant circuit 12 to output different resonant frequencies, so that the RF current has RF energy of different frequencies.

[0034] The frequency selection module 3 includes a plurality of frequency selection circuits 31, and the frequency selection circuit 31 includes a first resonant cavity 311 and a second resonant cavity 312 with opposite polarities. Assuming that the polarity of the first resonant cavity 311 is positive, the polarity of the second resonant cavity 312 is negative, and vice versa. Each frequency selection circuit 31 has a fixed resonant frequency, and at least a portion of the frequency selection circuits 31 have different resonant frequencies.

[0035] The first resonant cavity 311 and the second resonant cavity 312 of the frequency selection circuit 31 are both circuits formed by connecting an inductor L and a capacitor C in series, and thus have frequency selection characteristics.

[0036] The microneedle array 4 includes a plurality of microneedle electrodes. The input end of each frequency selection circuit 31 is connected to the radio frequency power supply 1, specifically, the input end of each frequency selection circuit 31 is connected to the output end of the resonance circuit 12. The first resonance cavity 311 and the second resonance cavity 312 of each frequency selection circuit 31 are connected to at least one microneedle electrode. The microneedle electrodes connected to the first resonance cavity 311 and the second resonance cavity 312 of each frequency selection circuit 31 can form a radio frequency current loop for outputting radio frequency energy to the tissue to be treated.

[0037] Each different frequency of RF energy output by RF source 1 can be matched with the resonant frequency of different frequency selection circuits 31. When RF source 1 outputs RF energy of a certain frequency, it will first perform frequency matching with different frequency selection circuits 31. If the matching is successful, the impedance of the corresponding frequency selection circuit 31 is zero, thereby connecting RF source 1 to the microneedle array electrode. At this time, the RF energy output by RF source 1 is input to the corresponding microneedle electrode through the first resonant cavity 311 and the second resonant cavity 312 of the successfully matched frequency selection circuit 31, forming a RF current loop for outputting RF energy to the tissue to be treated. The remaining frequency selection circuits 31 with unmatched frequencies show a high impedance state, thereby blocking the current path between RF source 1 and the microneedle electrode, and failing to form a RF current loop.

[0038] For example, a radio frequency source 1 can output three radio frequency energies with frequencies of 1.1 MHz, 1.2 MHz and 1.3 MHz. When the radio frequency source 1 outputs radio frequency energy of 1.1 MHz, due to the frequency selection characteristics of the frequency selection circuit 31, only the frequency selection circuit 31 with a resonant frequency of 1.1 MHz is at the resonance point and has zero impedance, thereby connecting the radio frequency source 1 and the microneedle array electrode to form a radio frequency current loop. The remaining frequency selection circuits 31 with a resonant frequency not of 1.1 MHz are in a high impedance state, thereby blocking the current path between the radio frequency source 1 and the microneedle electrode and failing to form a radio frequency current loop.

[0039] Therefore, each frequency of radio frequency energy output by the radio frequency source 1 will be output to the microneedle electrodes at different positions through the frequency selection circuit 31 with different resonant frequencies. The difference in frequency will not affect the magnitude of the radio frequency energy output, thereby ensuring that the radio frequency energy received by the microneedle electrodes at different positions at different times is the same, which is beneficial to improving the uniformity of energy distribution at each point during the treatment process, improving the treatment effect, and can reduce the pain of the treated subject and improve the treatment experience of the treated subject.

[0040] The first resonant cavity 311 and the second resonant cavity 312 of the frequency selection circuit 31 can be connected to one microneedle electrode or multiple microneedle electrodes, and the number of microneedle electrodes connected to the first resonant cavity 311 and the second resonant cavity 312 of the same frequency selection circuit 31 is the same, so that the same radio frequency current flows through each microneedle electrode, ensuring the uniformity of radio frequency energy output. The first resonant cavity 311 and the second resonant cavity 312 of each frequency selection circuit 31 are respectively connected to the microneedle electrodes at different positions of the microneedle array 4, and the control module 2 controls the radio frequency source 1 to output radio frequency energy with a frequency matching the resonant frequency corresponding to each frequency selection circuit 31 at least once. It is ensured that within one energy output cycle, the microneedle electrodes at different positions of the microneedle array 4 can all have radio frequency energy output, which is conducive to improving the uniformity of energy distribution at each point during the treatment process, improving the treatment effect, and can reduce the pain of the treated object and improve the treatment experience effect of the treated object.

[0041] Preferably, the first resonant cavity 311 and the second resonant cavity 312 of the frequency selection circuit 31 with different resonant frequencies are evenly distributed and connected to the microneedle electrodes at different positions of the microneedle array 4. This ensures that the radio frequency energy output by the microneedle electrodes at different positions of the microneedle array 4 is the same, which is beneficial to improving the uniformity of energy distribution at each point during the treatment process, improving the treatment effect, and can reduce the pain of the treated subject and improve the treatment experience effect of the treated subject.

[0042] The number of radio frequency energies of different frequencies output by the radio frequency source 1 is the same as the number of frequency selection circuits 31, and radio frequency energy of one frequency corresponds to a frequency selection circuit 31 of a matching resonant frequency. Each frequency of radio frequency energy can have a corresponding frequency selection circuit 31 to output accordingly. This is beneficial for dividing the microneedle array into more radio frequency current loop action areas with different positions through frequency division, which is beneficial for improving the uniformity of energy distribution at each point during the treatment process, and is beneficial for accurately controlling the position of radio frequency energy output of the microneedle electrode through the frequency division of radio frequency energy, so as to achieve the purpose of precise treatment.

[0043] Alternatively, the number of radio frequency energies of different frequencies output by the radio frequency source 1 is less than the number of frequency selection circuits 31, and radio frequency energy of one frequency corresponds to multiple frequency selection circuits of matching resonant frequencies. This is beneficial to increasing the coverage of radio frequency energy of one frequency output on the microneedle array 4, improving the efficiency of radio frequency energy output, and saving treatment time of radio frequency energy output.

[0044] The number of RF sources 1 can be one or more; when the number of RF sources 1 is one, one RF source 1 is connected to multiple frequency selection circuits 31, and outputs multiple RF energies of different frequencies to the frequency selection circuits 31 that match the resonant frequency. When the number of RF sources 1 is multiple, each RF source 1 can output RF energy of one frequency or multiple different frequencies. When each RF source 1 outputs RF energy of one frequency, each RF source 1 is correspondingly connected to a frequency selection circuit 31 whose resonant frequency matches it. When each RF source 1 outputs RF energy of multiple frequencies, each RF source 1 is connected to multiple frequency selection circuits 31, and outputs multiple RF energies of different frequencies to the frequency selection circuits 31 that match the resonant frequency.

[0045] When there are multiple RF sources 1, at least one RF source 1 is controlled to output RF energy of different frequencies to a frequency selection circuit that matches the resonant frequency. This is beneficial to improving the flexibility of using the RF source 1, and can enable multiple RF sources 1 to simultaneously provide RF energy output to microneedle electrodes at multiple different positions of the microneedle array 4, while ensuring the uniformity of energy distribution at each point during the treatment process, improving the efficiency of RF energy output, and saving the treatment time of RF energy output.

[0046] The control module 2 identifies each frequency selection circuit 31, and associates the identification information with each radio frequency energy of different frequencies output by the radio frequency source 1. The association condition is: whether the frequency of the radio frequency energy matches the resonant frequency of the frequency selection circuit 31. If they match, the association is performed, and within one energy output cycle, the radio frequency source 1 is controlled to output radio frequency energy with a frequency match to all the identified frequency selection circuits 31. This ensures that within one energy output cycle, the microneedle electrodes at different positions of the microneedle array 4 can all have radio frequency energy output, which is beneficial to improving the uniformity of energy distribution at each point during the treatment process, improving the treatment effect, and can reduce the pain of the treated subject and improve the treatment experience effect of the treated subject.

[0047] For example, the microneedle array 4 is connected to five frequency selection circuits 31, and the five frequency selection circuits 31 are respectively identified as (1, 2, 3, 4, 5 or a, b, c, d, e). It is assumed that the five frequency selection circuits 31 have different resonant frequencies (1.1 MHz, 1.2 MHz, 1.3 MHz, 1.4 MHz, 1.5 MHz) and are respectively connected to the microneedle electrodes at different positions of the microneedle array 4. The radio frequency source 1 can output radio frequency energy of five different frequencies (1.1 MHz, 1.2 MHz, 1.3 MHz, 1.4 MHz, 1.5 MHz) correspondingly, and the control module 2 associates the identification information of the frequency selection circuits 31 with the same frequency value with the radio frequency energy, for example, the identification (1 or a) is associated with the radio frequency energy of 1.1 MHz, the identification (2 or b) is associated with the radio frequency energy of 1.2 MHz, the identification (3 or c) is associated with the radio frequency energy of 1.3 MHz, and so on, and each identification information corresponds to a control signal.

[0048] In this way, the control module 2 can output the corresponding control signal to the RF source 1 according to the identification information, so that the RF source 1 outputs the corresponding RF energy, and in one energy output cycle, the control information corresponding to all the identification signals is evenly sent to the RF source 1 once, and the sending order does not need to strictly follow the arrangement order of the frequency size, and it is only necessary to evenly send the control information corresponding to all the identification signals once. It is ensured that in one energy output cycle, the microneedle electrodes at different positions of the microneedle array 4 can all have RF energy output, which is conducive to improving the uniformity of energy distribution at each point during the treatment process, improving the treatment effect, and can reduce the pain of the treated object and improve the treatment experience of the treated object.

[0049] Of course, only the control information corresponding to some identification signals can be sent to the RF source 1 in an evenly distributed manner to achieve RF energy output treatment at a local position of the microneedle array 4, which is conducive to accurately controlling the position of the RF energy output of the microneedle electrode and achieving the purpose of precise treatment.

[0050] The control module 2 can be a single chip microcomputer, a programmable logic controller (PLC), a field programmable gate array (FPGA), a digital signal processor (DSP), a complex programmable logic device (CPLD), etc.

[0051] Compared with the prior art, the present invention has the following beneficial effects:

[0052] The radio frequency microneedle treatment device of the present invention sends a control signal to the radio frequency source through a control module to control the radio frequency source to output radio frequency energy of different frequencies. The radio frequency source is connected to multiple frequency selection circuits, and each frequency selection circuit is connected to at least one microneedle electrode of the microneedle array through a first resonant cavity and a second resonant cavity with opposite polarities. Since each frequency selection circuit has a different resonant frequency, it can match the radio frequency energy of different frequencies output by the radio frequency source and output it to the corresponding microneedle electrode; therefore, each frequency radio frequency energy output by the radio frequency source will be output to microneedle electrodes at different positions through different frequency selection circuits, and the difference in frequency will not affect the size of the radio frequency energy output, thereby ensuring that the radio frequency energy received by the microneedle electrodes at different positions at different times is the same, which is beneficial to improving the uniformity of energy distribution at each point during the treatment process, improving the treatment effect, and can reduce the pain of the treated subject and improve the treatment experience effect of the treated subject.

[0053] The frequency selection circuit of the present invention can realize the corresponding output of radio frequency energy of different frequencies to microneedle electrodes at different positions through its frequency selection characteristics, and there is no need to disconnect the radio frequency energy signal. The implementation process is relatively simple, the response speed is relatively fast, and there is no disadvantage of energy lag and delayed output. In addition, the frequency selection circuit is a passive device with a low probability of failure, which can improve the stability of radio frequency energy output.

[0054] The above is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A radiofrequency microneedle treatment device, characterized in that: It includes a radio frequency source, a control module, a frequency selection module and a microneedle array; The control module is electrically connected to the RF source and is used to control the RF source to output RF energy of different frequencies; The frequency selection module includes a plurality of frequency selection circuits, each of which includes a first resonant cavity and a second resonant cavity with opposite polarities, each of which has a resonant frequency, and at least a portion of the frequency selection circuits have different resonant frequencies; The microneedle array includes a plurality of microneedle electrodes; The input end of each frequency selection circuit is connected to the radio frequency power supply, and the first resonant cavity and the second resonant cavity of each frequency selection circuit are connected to at least one of the microneedle electrodes; The frequency of each different RF energy output by the RF source can be matched with the resonant frequency of the different frequency selection circuits. The RF energy output by the RF source is frequency matched by the frequency selection circuit and then input to the corresponding microneedle electrode through the first resonant cavity and the second resonant cavity.

2. The radiofrequency microneedle treatment device according to claim 1, characterized in that: The first resonant cavity and the second resonant cavity of each frequency selection circuit are respectively connected to the microneedle electrodes at different positions of the microneedle array, and the control module controls the radio frequency source to output radio frequency energy with a frequency matching the resonant frequency corresponding to each frequency selection circuit at least once.

3. The radio frequency microneedle treatment device according to claim 2, characterized in that: The first resonant cavity and the second resonant cavity of the frequency selection circuit with different resonant frequencies are evenly distributed and connected to the microneedle electrodes at different positions of the microneedle array.

4. The radiofrequency microneedle treatment device according to claim 1, 2 or 3, characterized in that: The number of radio frequency energies of different frequencies output by the radio frequency source is the same as the number of the frequency selection circuits, and radio frequency energy of one frequency corresponds to a frequency selection circuit of a matching resonant frequency.

5. The radio frequency microneedle treatment device according to claim 1, 2 or 3, characterized in that: The number of radio frequency energies of different frequencies output by the radio frequency source is less than the number of the frequency selection circuits, and radio frequency energy of one frequency corresponds to a plurality of frequency selection circuits of matching resonant frequencies.

6. The radio frequency microneedle treatment device according to claim 1, characterized in that: The number of the radio frequency sources is one or more; When the number of the radio frequency source is one, one radio frequency source is connected to a plurality of frequency selection circuits, and outputs a plurality of radio frequency energies of different frequencies to the frequency selection circuits with matching resonant frequencies respectively; When the number of the RF sources is multiple, each RF source can output RF energy of one frequency or multiple different frequencies. When each RF source outputs RF energy of one frequency, each RF source is connected to a corresponding frequency selection circuit whose resonant frequency matches it. When each RF source outputs RF energy of multiple frequencies, each RF source is connected to multiple frequency selection circuits and respectively outputs RF energy of multiple different frequencies to the frequency selection circuits whose resonant frequencies match them.

7. The radio frequency microneedle treatment device according to claim 5, characterized in that: When there are multiple radio frequency sources, at least one radio frequency source is controlled to output radio frequency energy of different frequencies to a frequency selection circuit with a matching resonant frequency.

8. The radio frequency microneedle treatment device according to claim 1, 6 or 7, characterized in that: The control module identifies the frequency selection circuit corresponding to each of the resonant frequencies, and controls the radio frequency source to output frequency-matched radio frequency energy at least once to all the identified frequency selection circuits within an energy output cycle.

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