Radiofrequency microneedle treatment device and radiofrequency energy control method

Abstract

The present invention relates to the field of medical aesthetic medical device technology, and specifically discloses a radio frequency microneedle treatment device and a radio frequency energy control method. The radio frequency microneedle treatment device includes a control module, an impedance detection module, a switch switching circuit and a microneedle array; the microneedle array includes multiple microneedle electrodes, and the microneedle array is divided into multiple positive electrode areas and multiple negative electrode areas, and each positive electrode area and negative electrode area contains at least one microneedle electrode; the impedance detection module is electrically connected to the switch switching circuit, and the switch switching circuit is electrically connected to each microneedle electrode, and the impedance detection module is used to detect the impedance value of the treatment area tissue corresponding to the positive electrode area and the negative electrode area; the control module is electrically connected to the impedance detection module, and the control module sends an impedance detection signal to the impedance detection module, and according to the impedance value detected by the impedance detection module, parses the impedance value distribution map of the treatment area tissue corresponding to the microneedle array, and selects the appropriate positive electrode area and negative electrode area to be turned on according to the impedance value distribution map.

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 and a radio frequency energy control method. 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. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a radio frequency microneedle treatment device and a radio frequency energy control method, 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.

[0005] A radio frequency microneedle treatment device of the present invention comprises a control module, an impedance detection module, a switch switching circuit and a microneedle array;

[0006] The microneedle array includes a plurality of microneedle electrodes, and the microneedle array is divided into a plurality of positive electrode regions and a plurality of negative electrode regions, and each of the positive electrode region and the negative electrode region includes at least one microneedle electrode;

[0007] The impedance detection module is electrically connected to the switch switching circuit, the switch switching circuit is electrically connected to each of the microneedle electrodes, and the impedance detection module is used to detect the impedance value of the treatment area tissue corresponding to the positive electrode area and the negative electrode area;

[0008] The control module is electrically connected to the impedance detection module. The control module sends an impedance detection signal to the impedance detection module, and analyzes the impedance value distribution map of the treatment area tissue corresponding to the microneedle array according to the impedance value detected by the impedance detection module, and then selects appropriate positive and negative electrode areas to be turned on according to the impedance value distribution map.

[0009] As a preferred solution, if the impedance value of one area of ​​the tissue in the treatment area is smaller than the impedance value of the surrounding area, the control module selects a positive electrode area or a negative electrode area that is farther away from the area with a smaller impedance value to match the area with a smaller impedance value for conduction;

[0010] If the impedance value of one area of ​​the treatment area tissue is greater than the impedance value of the surrounding area, the control module selects a positive electrode area or a negative electrode area closer to the area with large impedance value to match the area with large impedance value for conduction.

[0011] As a preferred solution, the control module is also used to compare and analyze the impedance values ​​of various regions of the impedance value distribution diagram, and preferentially screen out regions with small impedance values ​​to match the positive or negative regions that meet the conditions for conduction.

[0012] As a preferred embodiment, the positive electrode region and the negative electrode region are evenly distributed on the microneedle array.

[0013] As a preferred embodiment, the microneedle array is divided into a plurality of annular areas distributed from the outside to the inside, and an equal number of positive electrode areas and negative electrode areas are alternately distributed on each annular area, the number of microneedle electrodes in the positive electrode area and the negative electrode area on the same annular area is the same, and the positive electrode area of ​​one of the two adjacent annular areas is opposite to the negative electrode area of ​​the other annular area.

[0014] As a preferred embodiment, the invention further includes a power supply, the input end of the switch switching circuit is connected to the power supply, the output end of the switch switching circuit is connected to each microneedle electrode of the microneedle array, and the control module is electrically connected to the switch switching circuit; the control module sends a first switching signal to the switch switching circuit to control different switches to connect to the microneedle electrodes in different positive and negative regions, and detects the impedance value of the treatment area tissue corresponding to the connected positive and negative regions through the impedance detection module.

[0015] As a preferred solution, the control module sends a second switching signal to the switch switching circuit according to the impedance value distribution diagram, and the switch switching circuit selects the positive and negative regions that match the impedance values ​​of each region to be turned on.

[0016] The present invention also provides a radio frequency energy output control method for controlling the radio frequency microneedle treatment device of any of the above schemes, and the control method comprises the following steps:

[0017] Dividing the microneedle array into a plurality of positive electrode regions and negative electrode regions including at least one microneedle electrode;

[0018] Inserting the microneedle electrodes of the microneedle array into the tissue in the treatment area, and detecting the impedance value of the tissue in the treatment area corresponding to the positive electrode area and the negative electrode area by an impedance detection module;

[0019] According to the impedance value, analyzing the impedance value distribution map of the treatment area tissue corresponding to the microneedle array;

[0020] According to the impedance value distribution diagram, appropriate positive and negative regions are selected to conduct and output radio frequency energy.

[0021] As a preferred solution, the regional impedance sizes of the impedance value distribution diagram are compared and analyzed, and the areas with small impedance values ​​are preferentially screened out to match the positive and negative areas that meet the conditions to conduct and output radio frequency energy.

[0022] As a preferred solution, if the impedance value of one area of ​​the tissue in the treatment area is smaller than the impedance value of the surrounding area, the control module selects a positive electrode area or a negative electrode area that is farther away from the area with a smaller impedance value to match the area with a smaller impedance value for conduction;

[0023] If the impedance value of one area of ​​the treatment area tissue is greater than the impedance value of the surrounding area, the control module selects a positive electrode area or a negative electrode area closer to the area with large impedance value to match the area with large impedance value for conduction.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] The radio frequency microneedle treatment device of the present invention is provided with a plurality of positive and negative regions on the microneedle array, and different positive and negative regions are switched on by a switch switching circuit, so that the impedance detection module detects the impedance value of the treatment area tissue corresponding to different positive and negative regions, and the control module analyzes the impedance value distribution map of the treatment area tissue corresponding to the microneedle array according to the impedance value detected by the impedance detection module, and then selects the positive and negative regions that match the impedance value of each region to conduct energy output according to the impedance value distribution map. It is beneficial to improve the uniformity of current distribution and the uniformity of energy distribution at each point during the treatment process, thereby achieving precise treatment and improving the treatment effect; in addition, it can also reduce the pain of the treatment object and improve the treatment experience effect of the treatment object. 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 schematic diagram of the overall distribution of the positive electrode area and the negative electrode area of ​​the microneedle array of the radio frequency microneedle treatment device of the present invention;

[0029] Figure 3 A schematic diagram showing specific numerical numbers of all positive electrode regions of the microneedle array of the radiofrequency microneedle treatment device of the present invention;

[0030] Figure 4 A schematic diagram showing specific numerical numbers of all negative electrode regions of the microneedle array of the radiofrequency microneedle treatment device of the present invention;

[0031] Figure 5 A digitally numbered schematic diagram of all positive and negative electrode regions of the microneedle array of the radio frequency microneedle treatment device of the present invention;

[0032] Figure 6 It is a schematic diagram of the impedance detection process of the radio frequency microneedle treatment device of the present invention;

[0033] Figure 7 This is a distribution diagram of impedance values ​​of the radio frequency microneedle treatment device of the present invention after impedance detection is completed;

[0034] Figure 8 It is a schematic flow chart of the radio frequency energy control method of the present invention.

[0035] In the figure: 1. control module; 2. impedance detection module; 3. switch switching circuit; 4. microneedle array; 5. resonant circuit; 6. power supply. DETAILED DESCRIPTION

[0036] 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.

[0037] 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.

[0038] See also Figure 1 As shown, a radio frequency microneedle treatment device of the present invention includes a control module 1, an impedance detection module 2, a switch circuit 3 and a microneedle array 4.

[0039] Among them, the microneedle array 4 includes a plurality of microneedle electrodes, and the microneedle array 4 is divided into a plurality of positive regions and a plurality of negative regions, and each positive region and negative region contains at least one microneedle electrode. The polarity of the microneedle electrode in the positive region is positive, and the polarity of the microneedle electrode in the negative region is negative. The impedance detection module 2 is electrically connected to the switch switching circuit 3, and the switch switching circuit 3 is electrically connected to each microneedle electrode. The switch switching circuit 3 is provided with a plurality of switches, and the plurality of switches correspond to the current loops of the plurality of positive regions and the plurality of negative regions respectively. By switching different switches closed, the microneedle electrodes in different positive regions are connected to the microneedle electrodes in the negative region.

[0040] The control module 1 is electrically connected to the impedance detection module 2. The control module 1 sends an impedance detection signal to the impedance detection module 2. When the switch switching circuit 3 connects the microneedle electrode in the positive electrode area with the microneedle electrode in the negative electrode area, the impedance detection module 2 can detect the impedance value of the treatment area tissue corresponding to the positive electrode area and the negative electrode area that are connected.

[0041] For example, the control module 1 controls one of the switches in the switch switching circuit 3 to conduct a positive electrode area with a negative electrode area, and the impedance detection module 2 measures the voltage value and current value between the positive electrode area and the negative electrode area that are conducted, and calculates the impedance value of the treatment area tissue corresponding to the positive electrode area and the negative electrode area that are conducted according to the Ohm's law formula, and feeds the impedance value back to the control module 1. The control module 1 parses the impedance value distribution map of the treatment area tissue corresponding to each positive electrode area and the negative electrode area of ​​the microneedle array 4 according to the impedance value distribution map, and then selects the positive electrode area or the negative electrode area that matches the impedance value of each area to conduct radio frequency energy output treatment.

[0042] Since the radio frequency microneedle treatment device of the present invention can perform targeted radio frequency energy output treatment on treatment area tissues with different impedance values ​​according to the impedance value distribution diagram of the detected treatment area tissues, it overcomes the problem that the traditional radio frequency microneedle treatment device uses fixed positive and negative microneedle electrodes, which leads to uneven energy distribution at various points during the treatment process. It is beneficial to improve the uniformity of current distribution during the treatment process, thereby improving the uniformity of energy output at various points, achieving precise treatment, and improving the treatment effect; in addition, it can also reduce the pain of the treated subject and improve the treatment experience effect of the treated subject.

[0043] The control module 1 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.

[0044] Specifically, the radio frequency microneedle treatment device of the present invention further includes a power supply 6, which is a conventional power supply that can output direct current. The power supply 6 can be connected to a resonant circuit 5, which can convert the direct current output by the power supply 6 into a radio frequency current. The input end of the switch switching circuit 3 is connected to the resonant circuit 5, and the output end of the switch switching circuit 3 is connected to each microneedle electrode of the microneedle array 4. The control module 1 is electrically connected to the switch switching circuit 3. When the impedance detection of the microneedle array 4 is performed, the control module 1 sends a first switching signal to the switch switching circuit 3, and controls different switches to connect the microneedle electrodes in different positive and negative regions, respectively, and controls the power supply 6 to provide the first electrical energy to the positive and negative regions that are connected, and detects the impedance value of the treatment area tissue between the positive and negative regions that are connected through the impedance detection module 2. The control module 1 parses the impedance value distribution diagram of the treatment area tissue corresponding to the microneedle array 4 according to the impedance value detected by the impedance detection module 2.

[0045] The control module 1 then sends a second switching signal to the switch switching circuit 3 according to the impedance value distribution diagram, and the switch switching circuit 3 selects the positive electrode area or the negative electrode area that matches the impedance value of each area to be turned on, and at the same time controls the power supply 6 to provide the second electrical energy to the connected positive electrode area and the negative electrode area to perform radio frequency energy output treatment.

[0046] Specifically, the control module 1 can analyze the regional impedance of the impedance distribution diagram. If the impedance value of one area of ​​the tissue in the treatment area is less than the impedance value of the surrounding area, the control module 1 selects a positive electrode area or a negative electrode area that is farther away from the area with a small impedance value to conduct with the area with a small impedance value. For example, assuming that the area with a small impedance value is a positive electrode area, a negative electrode area that is farther away from the positive electrode area is selected to be paired with the positive electrode area for conduction; assuming that the area with a small impedance value is a negative electrode area, a positive electrode area that is farther away from the negative electrode area is selected to be paired with the negative electrode area for conduction.

[0047] This is because we can consider the areas with smaller impedance values ​​to be areas closer to nerves, inflammatory areas, or areas with hair follicles. The impedance values ​​of these areas are much lower than those of normal areas, so these areas are identified as abnormal areas. When these abnormal areas are stimulated with radio frequency energy, the pain felt by the patient will be more obvious, and the patient will find it more difficult to bear. The stimulation time and energy density should be minimized. Therefore, the positive or negative electrode area that is far away from the area with small impedance value is selected to be connected to the area with small impedance value to form a current loop with a longer distance and lower current density, which can reduce the stimulation to these abnormal areas and thus reduce the pain felt by the patient.

[0048] If the impedance value of one area of ​​the tissue in the treatment area is greater than the impedance value of the surrounding area, the control module 1 selects the positive electrode area or the negative electrode area closer to the area with the large impedance value to pair with the area with the large impedance value for conduction. For example, assuming that the area with the large impedance value is the positive electrode area, the negative electrode area closer to the positive electrode area is selected to pair with the positive electrode area for conduction; assuming that the area with the large impedance value is the negative electrode area, the positive electrode area closer to the negative electrode area is selected to pair with the negative electrode area for conduction.

[0049] This is because we can consider the area with larger impedance value as normal area. When these normal areas are stimulated by radio frequency energy, the pain of the treated object will not be particularly obvious. Therefore, we choose to conduct with the positive or negative area close to the area with large impedance value, and pair them nearby, so as to provide strong stimulation to the area with large impedance value and improve the treatment effect of radio frequency energy output.

[0050] Generally speaking, when radio frequency energy is stimulated in abnormal areas, the pain of the patient will be more obvious, and the patient will find it more unbearable. Therefore, the stimulation time and energy density of the stimulation should be minimized. We will give priority to treating areas with smaller impedance values. Therefore, the control module 1 is also used to compare and analyze the regional impedance values ​​corresponding to the positive and negative regions of the impedance value distribution diagram, and preferentially screen out areas with small impedance values ​​to match the qualified positive or negative regions with the areas with small impedance values ​​for conduction. Specifically, after the control module 1 analyzes the impedance value distribution diagram according to the impedance value fed back by the impedance detection module 2, it will compare and analyze the regional impedance sizes corresponding to all positive and negative regions of the microneedle array 4, and preferentially screen out areas with small impedance values. Since areas with small impedance values ​​are generally abnormal areas, the pain of the patient will be more obvious, so treatment will be given priority.

[0051] For example, if the area with a small impedance value is a positive electrode area, the negative electrode area farther from the positive electrode area is selected to be paired with the positive electrode area for conduction; if the area with a small impedance value is a negative electrode area, the positive electrode area farther from the negative electrode area is selected to be paired with the negative electrode area for conduction. Once the paired treatment of the area with a small impedance value is completed, the corresponding microneedle electrodes of the two paired areas will not be used again during this treatment.

[0052] Combination Figures 2 to 7 As shown, the radio frequency microneedle treatment device in the embodiment of the present invention is specifically illustrated by a 7×7 microneedle array. Specifically, the 7×7 microneedle array is arranged in a square, and the positive electrode area and the negative electrode area are evenly distributed on the microneedle array 4.

[0053] Specifically, the microneedle array 4 is divided into a plurality of annular areas distributed from the outside to the inside, and an equal number of positive areas and negative areas are alternately distributed on each annular area. The number of microneedle electrodes in the positive area and the negative area on the same annular area is the same, and the positive area of ​​one of the two adjacent annular areas is opposite to the negative area of ​​the other annular area.

[0054] For example, Figure 2As shown, in this embodiment, the 7×7 microneedle array is divided into three annular areas and one central area of ​​microneedle electrodes from the outside to the inside. The three annular areas are respectively called the first annular area, the second annular area, and the third annular area from the outside to the inside, and the central area is located at the center of the microneedle array. Among them, the first annular area is divided into two positive areas, positive area A and positive area D, and two negative areas, negative area B and negative area C. The two positive areas, positive area A and positive area D, and the two negative areas, negative area B and negative area C, are arranged alternately and arranged at the four corners of the first annular area, respectively. The number of microneedle electrodes in each positive area and negative area is 5. The second annular area is also divided into two positive areas, positive area F and positive area G, and two negative areas, negative area E and negative area H. The two positive areas, positive area F and positive area G, and the two negative areas, negative area E and negative area H, are arranged alternately and arranged at the four corners of the second annular area, respectively. The number of microneedle electrodes in each positive area and negative area is 4. The third annular region is divided into a positive region I and a negative region J, and the positive region I and the negative region J divide the third annular region equally.

[0055] The two positive pole areas A and the positive pole area D of the first annular area respectively correspond to the two negative pole areas E and the negative pole area H surrounding the second annular area, and the two negative pole areas B and the negative pole area C of the first annular area respectively correspond to the two positive pole areas F and the positive pole area G surrounding the second annular area; the two positive pole areas F and the positive pole area G of the second annular area jointly surround the negative pole area J of the third annular area, and the two negative pole areas E and the negative pole area H of the second annular area jointly surround the positive pole area I of the third annular area, forming a layout in which the positive pole area of ​​one of the two adjacent annular areas is relative to the negative pole area of ​​the other annular area.

[0056] Such a layout setting is equivalent to dividing the treatment area tissue corresponding to the microneedle array 4 into multiple radio frequency energy stimulation areas through evenly distributed positive and negative areas. The treatment area tissue is finely divided through evenly distributed positive and negative areas. When performing impedance detection, it is beneficial to the accuracy of the impedance detection of the treatment area tissue, so that the impedance value distribution diagram analyzed by the control module 1 based on the detected impedance value is closer to the actual impedance value distribution of the treatment area tissue, which is beneficial to accurately identify abnormal areas such as areas close to nerves, inflammatory areas, or areas with hair follicles for priority treatment. In addition, fine division of the treatment area tissue through evenly distributed positive and negative areas is also beneficial to improve the uniformity of current distribution during the treatment process, thereby improving the uniformity of energy output at each point, achieving precise treatment, and improving treatment effects.

[0057] Combination Figures 3 to 5 , which is a schematic diagram of the digital numbers corresponding to the positive and negative electrode regions of the microneedle array 4, wherein: Figure 3The digital number map corresponding to all positive electrode areas of the microneedle array 4 is shown in FIG. Figure 4 The figure shows the digital numbers corresponding to all negative electrode regions of the microneedle array 4. Figure 5 The figure is a numerical numbering diagram corresponding to all the positive and negative regions of the microneedle array 4. As can be seen from the figure, the numerical numbers corresponding to the positive regions A, D, F, G, and I are 1+, 2+, 4+, 3+, and 5+, respectively, and the numerical numbers corresponding to the negative regions B, C, E, H, and J are 2-, 1-, 3-, 4-, and 5-, respectively.

[0058] When performing impedance detection, the control module 1 selects a positive electrode area and a negative electrode area to be turned on in turn by controlling the switch switching circuit 3, and detects the impedance value of the treatment area tissue corresponding to the turned-on positive electrode area and negative electrode area through the impedance detection module 2, until the positive electrode area and negative electrode area of ​​all areas of the microneedle array 4 are turned on at least once, so that the impedance detection module 2 can detect the impedance values ​​of all treatment area tissues corresponding to the microneedle array 4.

[0059] Specific, combined Figures 5 and 6 As shown, Figure 6 In the figure (a), the switch switching circuit 3 selects the positive electrode area A and the negative electrode area C to be turned on, and the impedance value of the tissue in the treatment area corresponding to the positive electrode area A and the negative electrode area C can be detected; Figure 6 In the figure (b), the switch switching circuit 3 selects the positive electrode area D and the negative electrode area B to be turned on, and the impedance value of the tissue in the treatment area corresponding to the positive electrode area D and the negative electrode area B can be detected; Figure 6 In the figure (c), the switch circuit 3 selects the positive electrode area D and the negative electrode area J to be turned on, and the impedance value of the tissue in the treatment area corresponding to the negative electrode area J can be detected; Figure 6 In the figure (d), the switch circuit 3 selects the positive electrode area I and the negative electrode area B to be turned on, and the impedance value of the tissue in the treatment area corresponding to the positive electrode area I can be detected; Figure 6 In the figure (e), the switch switching circuit 3 selects the positive electrode area F and the negative electrode area H to be turned on, and the impedance value of the tissue in the treatment area corresponding to the positive electrode area F and the negative electrode area H can be detected; Figure 6 In the figure (f), the switch circuit 3 selects the positive electrode area G and the negative electrode area E to be turned on, and the impedance value of the treatment area tissue corresponding to the positive electrode area G and the negative electrode area E can be detected. According to the impedance values ​​detected in the above-mentioned regions, the impedance value distribution map corresponding to the treatment area tissue corresponding to all regions of the microneedle array 4 can be drawn.

[0060] like Figure 7As shown, in this embodiment, the impedance value distribution diagram detected by the 7×7 microneedle array, assuming that the numbers in the squares represent the impedance values ​​of the area, it can be seen from the impedance value distribution diagram that the area with an impedance value of 3 is an area with a smaller impedance value. This area is distributed in the lower right corner of the microneedle array 4, corresponding to the negative electrode area C of the first annular area. Therefore, the positive electrode area I of the third annular area far away from the negative electrode area C can be selected to be paired and connected with it for radio frequency energy output treatment, and the positive electrode area I can be removed after the treatment, and the positive electrode area I will no longer participate in the subsequent electrode pairing.

[0061] It can be seen from the impedance value distribution diagram that the next area with a smaller impedance value is the area with an impedance value of 3.5 located at the lower left corner of the microneedle array 4. Since this area is distributed in the lower left corner of the microneedle array 4, it corresponds to the positive electrode area D of the first annular area. Therefore, the negative electrode area J of the third annular area far away from the positive electrode area D can be selected to be paired and connected to perform radio frequency energy output treatment, and the negative electrode area J is removed after the treatment, and the negative electrode area J no longer participates in the subsequent electrode pairing.

[0062] It can be seen from the impedance distribution diagram that after removing the two low-impedance areas, the remaining areas are all high-impedance areas. Energy output treatment can be performed in pairs nearby to provide strong stimulation to the area with large impedance values ​​and improve the therapeutic effect of radio frequency energy output.

[0063] like Figure 8 As shown, the present invention also provides a radio frequency energy output control method for controlling the radio frequency microneedle treatment device of any of the above schemes, and the control method comprises the following steps:

[0064] The microneedle array is divided into a plurality of positive and negative regions containing at least one microneedle electrode; wherein the polarity of the microneedle electrode in the positive region is positive, and the polarity of the microneedle electrode in the negative region is negative, and the positive and negative regions are evenly distributed on the microneedle array. Specifically, the microneedle array is divided into a plurality of annular regions distributed from the outside to the inside, and each annular region is alternately distributed with the same number of positive and negative regions, and the number of microneedle electrodes in the positive and negative regions in the same annular region is the same, and the positive region of one of the two adjacent annular regions is opposite to the negative region of the other annular region.

[0065] The microneedle electrodes of the microneedle array are inserted into the tissue of the treatment area, and the impedance detection module is used to detect the impedance value of the tissue of the treatment area corresponding to the positive electrode area and the negative electrode area. Specifically, the microneedle array is pushed to move by the driving mechanism of the microneedle treatment device, so that the microneedle electrodes of the microneedle array are inserted into the tissue of the treatment area, the impedance detection module is electrically connected to the switch switching circuit, the switch switching circuit is electrically connected to each microneedle electrode, and the switch switching circuit is provided with multiple switches, and the multiple switches correspond to the current loops of multiple positive electrode areas and multiple negative electrode areas respectively. By switching different switches closed, the microneedle electrodes in different positive electrode areas are connected to the microneedle electrodes in the negative electrode area.

[0066] The control module sends an impedance detection signal to the impedance detection module. When the switch circuit connects the microneedle electrode in the positive area with the microneedle electrode in the negative area, the impedance detection module detects the impedance value of the treatment area tissue corresponding to the positive area and the negative area.

[0067] According to the impedance value, the impedance value distribution diagram of the treatment area tissue corresponding to the microneedle array is analyzed; the control module analyzes the impedance value distribution diagram of the treatment area tissue corresponding to each positive electrode area and negative electrode area of ​​the microneedle array according to the impedance value detected by the impedance detection module.

[0068] According to the impedance value distribution diagram, the positive and negative regions that match the impedance values ​​of each region are selected to conduct and output radio frequency energy.

[0069] A radio frequency energy output control method of the present invention also includes comparing and analyzing the regional impedance size of the impedance value distribution map, and preferentially screening out the area with small impedance value to match the positive and negative areas that meet the conditions to conduct and output radio frequency energy. This is because the area with smaller impedance value can be considered as an area close to the nerve, an inflammatory area, or an abnormal area such as hair follicles. When the abnormal area is stimulated with radio frequency energy, the pain of the patient will be more obvious, and the patient will find it more unbearable. The stimulation time and energy density of the stimulation should be minimized. Therefore, we will give priority to the area with smaller impedance value for treatment.

[0070] A radio frequency energy output control method of the present invention also includes that if the impedance value of one area of ​​the treatment area tissue is smaller than the impedance value of the surrounding area, the control module selects a positive electrode area or a negative electrode area farther away from the area with small impedance value to match the area with small impedance value for conduction.

[0071] This is because we can consider the areas with smaller impedance values ​​to be areas closer to nerves, inflammatory areas, or areas with hair follicles. The impedance values ​​of these areas are much lower than those of normal areas, so these areas are identified as abnormal areas. When these abnormal areas are stimulated with radio frequency energy, the pain felt by the patient will be more obvious, and the patient will find it more difficult to bear. The stimulation time and energy density should be minimized. Therefore, the positive or negative electrode area that is far away from the area with small impedance value is selected to be connected to the area with small impedance value to form a current loop with a longer distance and lower current density, which can reduce the stimulation to these abnormal areas and thus reduce the pain felt by the patient.

[0072] If the impedance value of one area of ​​the tissue in the treatment zone is greater than the impedance value of the surrounding area, the control module selects a positive electrode area or a negative electrode area closer to the area with a large impedance value to match the area with a large impedance value for conduction.

[0073] This is because we can consider the area with larger impedance value as normal area. When these normal areas are stimulated by radio frequency energy, the pain of the treated object will not be particularly obvious. Therefore, we choose to conduct with the positive or negative area close to the area with large impedance value, and pair them nearby, so as to provide strong stimulation to the area with large impedance value and improve the treatment effect of radio frequency energy output.

[0074] Compared with the prior art, the present invention has the following beneficial effects:

[0075] The radio frequency microneedle treatment device of the present invention is provided with a plurality of positive and negative regions on the microneedle array, and different positive and negative regions are switched on by a switch switching circuit, so that the impedance detection module detects the impedance value of the treatment area tissue corresponding to different positive and negative regions, and the control module analyzes the impedance value distribution map of the treatment area tissue corresponding to the microneedle array according to the impedance value detected by the impedance detection module, and then selects the positive and negative regions that match the impedance value of each region to conduct energy output according to the impedance value distribution map. It is beneficial to improve the uniformity of current distribution and the uniformity of energy distribution at each point during the treatment process, thereby achieving precise treatment and improving the treatment effect; in addition, it can also reduce the pain of the treatment object and improve the treatment experience effect of the treatment object.

[0076] 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 control module, an impedance detection module, a switch circuit and a microneedle array; The microneedle array includes a plurality of microneedle electrodes, and the microneedle array is divided into a plurality of positive electrode regions and a plurality of negative electrode regions, and each of the positive electrode region and the negative electrode region includes at least one microneedle electrode; The impedance detection module is electrically connected to the switch switching circuit, the switch switching circuit is electrically connected to each of the microneedle electrodes, and the impedance detection module is used to detect the impedance value of the treatment area tissue corresponding to the positive electrode area and the negative electrode area; The control module is electrically connected to the impedance detection module, the control module sends an impedance detection signal to the impedance detection module, and analyzes the impedance value distribution map of the treatment area tissue corresponding to the microneedle array according to the impedance value detected by the impedance detection module, and then selects the appropriate positive electrode area and negative electrode area to conduct according to the impedance value distribution map; If the impedance value of one area of ​​the tissue in the treatment area is smaller than the impedance value of the surrounding area, the control module selects a positive electrode area or a negative electrode area that is farther away from the area with a smaller impedance value to match the area with a smaller impedance value for conduction; If the impedance value of one area of ​​the treatment area tissue is greater than the impedance value of the surrounding area, the control module selects a positive electrode area or a negative electrode area closer to the area with large impedance value to match the area with large impedance value for conduction.

2. The radiofrequency microneedle treatment device according to claim 1, characterized in that: The control module is also used to compare and analyze the impedance values ​​of each area of ​​the impedance value distribution diagram, and preferentially select areas with small impedance values ​​to match the positive electrode area or negative electrode area that meets the conditions for conduction.

3. The radiofrequency microneedle treatment device according to claim 1, characterized in that: The positive electrode area and the negative electrode area are evenly distributed on the microneedle array.

4. The radiofrequency microneedle treatment device according to claim 1 or 3, characterized in that: The microneedle array is divided into a plurality of annular areas distributed from the outside to the inside, and an equal number of positive electrode areas and negative electrode areas are alternately distributed on each annular area. The number of microneedle electrodes in the positive electrode area and the negative electrode area on the same annular area is the same, and the positive electrode area of ​​one of the two adjacent annular areas is opposite to the negative electrode area of ​​the other annular area.

5. The radio frequency microneedle treatment device according to claim 1, characterized in that: It also includes a power supply, the input end of the switch switching circuit is connected to the power supply, the output end of the switch switching circuit is connected to each microneedle electrode of the microneedle array, and the control module is electrically connected to the switch switching circuit; the control module sends a first switching signal to the switch switching circuit to control different switches to connect to the microneedle electrodes in different positive and negative areas, and detects the impedance value of the treatment area tissue corresponding to the connected positive and negative areas through the impedance detection module.

6. The radiofrequency microneedle treatment device according to claim 1 or 5, characterized in that: The control module sends a second switching signal to the switch switching circuit according to the impedance value distribution diagram, and the switch switching circuit selects the positive electrode area and the negative electrode area matching the impedance value of each area to be turned on.

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