Radio frequency microneedle system, control method, and medical device
By designing a uniformly arranged array structure and a time-division excitation control method in the radiofrequency microneedle system, the problem of uneven energy output in the radiofrequency microneedle system was solved, achieving a more uniform heating effect and better treatment results.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- SHENZHEN PENINSULA MEDICAL CO LTD
- Filing Date
- 2024-12-03
- Publication Date
- 2026-06-05
Smart Images
Figure CN122141124A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of medical aesthetic microneedling technology, and in particular to a radiofrequency microneedling system, control method, and medical device. Background Technology
[0002] Radiofrequency microneedling is a commonly used invasive aesthetic medical device that delivers radiofrequency energy to specific tissue areas via microneedles. By stimulating the skin with tiny needles and releasing radiofrequency energy deep within the skin, therapeutic effects are achieved. Radiofrequency microneedling allows for control over the depth and intensity of the radiofrequency energy, thus specifically addressing various skin problems. It is typically divided into monopolar or bipolar microneedle systems. Monopolar microneedles use all arrayed microneedles as the positive electrode, with a neutral electrode forming the circuit loop; bipolar microneedles use pairs of microneedles as positive and negative electrodes in the microneedle array to form a radiofrequency current loop.
[0003] The therapeutic effect of a microneedle system directly depends on the uniformity of radiofrequency energy application within the system, which is closely related to the electrode arrangement and excitation design. The main issues to consider in multi-needle array microneedles include how to alleviate pain during simultaneous multi-needle stimulation, how to improve the efficiency of time-division excitation, and how to ensure uniform energy output across the array. However, with the aforementioned monopolar or bipolar excitation methods, the single-row arrangement of microneedles results in uneven energy output at different needle tips.
[0004] The above content is only used to help understand the technical solution of the present invention and does not represent an admission that the above content is prior art. Summary of the Invention
[0005] The main objective of this invention is to provide a radiofrequency microneedle system, control method, and medical device, aiming to solve the technical problem of uneven array energy output when multiple radiofrequency microneedles are excited simultaneously in the prior art.
[0006] To achieve the above objectives, the present invention proposes a radio frequency microneedle system, comprising: a radio frequency microneedle excitation unit; wherein, the radio frequency microneedle excitation unit comprises: an array structure consisting of more than two radio frequency microneedles; the radio frequency microneedles in the array structure are arranged according to points with uniform energy distribution; each radio frequency microneedle is used to apply externally input radio frequency energy to the tissue area corresponding to its point for heating; the temperature of the gap between adjacent radio frequency microneedles is the same during heating.
[0007] Optionally, the radio frequency microneedle excitation unit includes four radio frequency microneedles, and the array structure is a rectangular array structure; the four radio frequency microneedles are disposed at the corners of the rectangular array structure; the two radio frequency microneedles on the diagonal have the same polarity.
[0008] Optionally, the radio frequency microneedles are bipolar microneedle systems; in the rectangular array structure, adjacent radio frequency microneedles are respectively configured as positive microneedles and negative microneedles.
[0009] Optionally, the radio frequency microneedle excitation unit includes an even number of radio frequency microneedles, and the array structure is a circular array structure; each radio frequency microneedle is disposed on the circumference of the circular array structure, and is disposed according to the position corresponding to the circumference diameter; the spacing between adjacent radio frequency microneedles is the same; two radio frequency microneedles at the position corresponding to the circumference diameter have the same polarity.
[0010] Optionally, the radio frequency microneedle system includes: a microneedle array; wherein the microneedle array includes a plurality of radio frequency microneedle excitation units as described above.
[0011] Optionally, the microneedle array includes an even number of radio frequency microneedles in the x and y directions of the array; the microneedle array is obtained by using the radio frequency microneedle excitation unit constructed with four radio frequency microneedles as a repeating unit.
[0012] In addition, to achieve the above objectives, the present invention also provides a radio frequency microneedle control method, which is applied to the microneedle array described above. The method includes: constructing multiple excitation channels containing a preset number of radio frequency microneedle excitation units according to the relative distance between each radio frequency microneedle excitation unit in the radio frequency microneedle system; and sequentially injecting externally input radio frequency energy into each of the excitation channels according to a preset timing sequence to heat the target area.
[0013] Optionally, the preset quantity is one; in the preset timing sequence, the radio frequency microneedle excitation units corresponding to the excitation channels of adjacent timing sequences are not spatially adjacent.
[0014] Optionally, the preset quantity is two. The step of constructing multiple excitation channels containing the preset quantity of radio frequency microneedle excitation units based on the relative distance between each radio frequency microneedle excitation unit in the radio frequency microneedle system includes: obtaining the two radio frequency microneedle excitation units with the farthest relative distance in the radio frequency microneedle system to construct the excitation channel; when the number of radio frequency microneedle excitation units in the radio frequency microneedle system is even, sequentially using the two radio frequency microneedle excitation units with the farthest relative distance to construct the excitation channel until all the radio frequency microneedle excitation units in the radio frequency microneedle system have their corresponding excitation channel; when the number of radio frequency microneedle excitation units in the radio frequency microneedle system is odd, sequentially using the two radio frequency microneedle excitation units with the farthest relative distance to construct the excitation channel until there is a remaining radio frequency microneedle excitation unit in the radio frequency microneedle system that has not been constructed as the excitation channel, and using the remaining radio frequency microneedle excitation unit to construct the excitation channel, so that all the radio frequency microneedle excitation units in the radio frequency microneedle system have their corresponding excitation channel.
[0015] Optionally, before the step of injecting externally input radio frequency energy into each of the excitation channels in a preset timing sequence to heat the target area, the method further includes: setting the timing sequence of the excitation channel corresponding to the radio frequency microneedle excitation unit that is furthest away from the excitation channel as the first timing sequence; and setting the preset timing sequence of each excitation channel in order of increasing relative distance from the radio frequency microneedle excitation units.
[0016] In addition, to achieve the above objectives, the present invention also provides a medical device comprising a microneedle array as described above and capable of applying the radio frequency microneedle control method as described above.
[0017] This invention provides a radiofrequency microneedle system, a control method, and a medical device. The radiofrequency microneedle system includes: a radiofrequency microneedle excitation unit; the radiofrequency microneedle excitation unit includes: an array structure composed of more than two radiofrequency microneedles; the radiofrequency microneedles in the array structure are arranged according to points with uniform energy distribution; each radiofrequency microneedle can be used to apply externally input radiofrequency energy to the tissue area corresponding to its point for heating; the temperature of the gap between adjacent radiofrequency microneedles is the same during heating. By designing the positional distribution of the radiofrequency microneedles, the heating effect of each microneedle is more uniform in the case of multiple microneedles, and the effective volume of a single acupuncture treatment can be increased, achieving better therapeutic effects. Attached Figure Description
[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.
[0019] Figure 1 This is a schematic diagram of the structure of the radio frequency microneedle excitation unit in the first embodiment of the radio frequency microneedle system of the present invention;
[0020] Figure 2 This is a schematic diagram of the arrangement of four microneedles for bipolar excitation in the prior art;
[0021] Figure 3 A side view of the heating effect of bipolar excitation with four microneedles in the prior art;
[0022] Figure 4 A top view of the heating effect of bipolar excitation with four microneedles in the prior art;
[0023] Figure 5 This is a schematic diagram of the arrangement of four microneedles for unipolar excitation in the prior art;
[0024] Figure 6 A side view of the heating effect of four microneedle unipolar excitation in the prior art;
[0025] Figure 7 A top view of the heating effect of four microneedles unipolar excitation in the prior art;
[0026] Figure 8 This is a top view of the rectangular array structure in the first embodiment of the radio frequency microneedle system of the present invention;
[0027] Figure 9 This is a top view of the circular array structure in the first embodiment of the radio frequency microneedle system of the present invention;
[0028] Figure 10 This is a top view of the heating effect of the bipolar microneedle system in the first embodiment of the radio frequency microneedle system of the present invention;
[0029] Figure 11 This is a top view of the heating effect of the monopolar microneedle system in the first embodiment of the radio frequency microneedle system of the present invention;
[0030] Figure 12 This is a schematic diagram of the microneedle array structure in the second embodiment of the radio frequency microneedle system of the present invention;
[0031] Figure 13 A top view of the heating effect of unipolar excitation in a microneedle system in the prior art;
[0032] Figure 14 This is a flowchart illustrating an embodiment of the radio frequency microneedle control method of the present invention;
[0033] Figure 15 This is a temperature distribution diagram after bipolar excitation time-division heating in one embodiment of the radio frequency microneedle control method of the present invention;
[0034] Figure 16 This is a temperature distribution diagram of the microneedle system after time-division heating according to the excitation channel, in one embodiment of the radio frequency microneedle control method of the present invention.
[0035] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation
[0036] It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0038] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.
[0039] Furthermore, the use of terms such as "first" and "second" in this invention is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this invention.
[0040] Reference Figure 1 , Figure 1 This is a schematic diagram of the structure of the radio frequency microneedle excitation unit in the first embodiment of the radio frequency microneedle system of the present invention, as shown below. Figure 1As shown, in this embodiment, the radio frequency microneedle system includes: a radio frequency microneedle excitation unit; wherein, the radio frequency microneedle excitation unit includes: an array structure composed of more than two radio frequency microneedles 10; the radio frequency microneedles 10 in the array structure are arranged according to the points of uniform energy distribution.
[0041] It should be noted that each radiofrequency microneedle can be used to apply externally input radiofrequency energy to the tissue area corresponding to its location for heating; the temperature of the gap between adjacent radiofrequency microneedles is the same during heating.
[0042] It should be understood that when using a single radiofrequency microneedle for heating, the heated area is distributed in a point-like pattern, resulting in uneven heating and poor treatment efficacy. However, when using multiple radiofrequency microneedles for heating, the following guidelines can be followed: Figures 2 to 4 , Figure 2 This is a schematic diagram of the arrangement of four microneedles for bipolar excitation in the prior art. Figure 3 This is a side view of the heating effect of bipolar excitation using four microneedles in the prior art. Figure 4 This is a top view of the heating effect of bipolar excitation using four microneedles in the prior art.
[0043] In this system, the bipolar microneedle system uses pairs of microneedles as positive and negative electrodes to form a radio frequency current loop, as referenced. Figure 2 The first positive microneedle p1+, the first negative microneedle n1-, the second negative microneedle n2-, and the second positive microneedle p2+ are arranged sequentially from left to right. Since the radiofrequency current excited by the microneedles mainly passes through the area between the positive and negative electrodes, when the four microneedles are bipolar excited, the energy is mainly concentrated between p1+ and n1- and between p2+ and n2-, while the heating effect in the middle gap (between n1- and n2-) is poor, resulting in uneven treatment effect.
[0044] Furthermore, one can refer to Figures 5 to 7 , Figure 5 This is a schematic diagram of the arrangement of four microneedles for unipolar excitation in the prior art. Figure 6 This is a side view of the heating effect of four microneedles unipolar excitation in the prior art. Figure 7 This is a top view of the heating effect of four microneedles unipolar excitation in the prior art.
[0045] In this monopolar microneedle system, all microneedles in the microneedle array serve as positive electrodes, while a neutral electrode is used as the circuit loop (not shown in the figure). (Refer to...) Figure 2The four positive microneedles, p1+, p2+, p3+, and p4+, are arranged sequentially from left to right. Due to the skin-triggering effect during microneedle stimulation, the microneedles near the edges heat up better than those in the center. Therefore, during bipolar stimulation with four microneedles, the energy is mainly concentrated in the heating areas of p1+ and p4+ at the edges, while the heating effect of p2+ and p3+ in the center is poor, resulting in uneven treatment effects.
[0046] In this embodiment of the invention, the radio frequency microneedle excitation unit includes an array structure consisting of more than two radio frequency microneedles. The number of radio frequency microneedles in the radio frequency microneedle excitation unit can be specifically set according to actual needs. For ease of explanation, this embodiment uses four radio frequency microneedles as an example.
[0047] It should be noted that the radiofrequency microneedles in the array structure are arranged according to points of uniform energy distribution. That is, by arranging them in an array, the microneedles are not placed on a single baseline, reducing energy unevenness caused by bipolar current flow or the unipolar skin effect. The array structure can include a rectangular array structure or a circular array structure. By uniformly placing the radiofrequency microneedles in the array structure, the temperature rise of each radiofrequency microneedle in its corresponding tissue area is essentially the same.
[0048] Reference Figure 8 , Figure 8 This is a top view of the rectangular array structure in the first embodiment of the radio frequency microneedle excitation unit of the present invention. Four radio frequency microneedles are respectively disposed at the corners of the rectangular array structure; the rectangular array can be configured as a square structure, with the two radio frequency microneedles on opposite diagonals having the same polarity. Specifically, for a bipolar microneedle system, adjacent radio frequency microneedles in the rectangular array structure are respectively configured as positive and negative microneedles. For a unipolar microneedle system, all radio frequency microneedles in the rectangular array structure are positive microneedles.
[0049] Furthermore, one can refer to Figure 9 , Figure 9 This is a top view of the circular array structure in the first embodiment of the radio frequency microneedle excitation unit of the present invention. Each radio frequency microneedle is disposed on the circumference of the circular array structure, positioned according to the diameter of the circumference; the spacing between adjacent radio frequency microneedles is the same; two radio frequency microneedles at positions corresponding to the diameter of the circumference have the same polarity. Specifically, for a bipolar microneedle system, adjacent radio frequency microneedles in the circular array structure are respectively configured as positive and negative microneedles. For a unipolar microneedle system, all radio frequency microneedles in the circular array structure are positive microneedles.
[0050] Furthermore, referring to Figure 10 and Figure 11 , Figure 10This is a top view of the heating effect of the bipolar microneedle system in the first embodiment of the radio frequency microneedle excitation unit of the present invention. Figure 11 This is a top view of the heating effect of the unipolar microneedle system in the first embodiment of the radio frequency microneedle excitation unit of the present invention. The shades of color in the figure represent the temperature distribution of the microneedles after heating under this structure, with the temperature gradually increasing from blue to red.
[0051] It should be noted that the RF microneedle excitation unit for other even-numbered RF microneedles can be configured according to the above scheme, and will not be elaborated further here. The RF microneedle excitation unit can also further alleviate the uneven heating by sequentially exciting each RF microneedle in a time-division manner.
[0052] In this embodiment, the radiofrequency microneedle excitation unit includes: an array structure consisting of more than two radiofrequency microneedles; the radiofrequency microneedles in the array structure are arranged according to points with uniform energy distribution; each radiofrequency microneedle can be used to apply externally input radiofrequency energy to the tissue area corresponding to its point for heating; the temperature of the gap between adjacent radiofrequency microneedles is the same during heating. By designing the positional distribution of the radiofrequency microneedles, the heating effect of each microneedle is more uniform in the case of multiple microneedles, and the effective volume of a single acupuncture treatment can be increased, achieving better therapeutic effects.
[0053] Reference Figure 12 , Figure 12 This is a schematic diagram of the microneedle array structure in the second embodiment of the radio frequency microneedle system of the present invention, as shown below. Figure 2 As shown, in this embodiment, the contents that are the same as or similar to those in the first embodiment described above can be referred to the above description and will not be repeated hereafter. The radio frequency microneedle system includes: a microneedle array; wherein, the microneedle array includes multiple radio frequency microneedle excitation units, and each radio frequency microneedle excitation unit is spatially independent and does not overlap with each other.
[0054] The microneedle array includes an even number of radio frequency microneedles 10 in the x and y directions of the array; taking the rectangular structure constructed with four radio frequency microneedles as an example, the radio frequency microneedle excitation unit constructed with four radio frequency microneedles is used as a repeating unit to obtain the microneedle array.
[0055] Because existing multi-microneedle systems suffer from uneven energy output at different needle tips due to bipolar or unipolar excitation, refer to... Figure 13 , Figure 13 This is a top view of the heating effect of unipolar excitation in a microneedle system in the prior art. In the figure, the 25 microneedle system exhibits a phenomenon where the microneedles near the edges have a better heating effect than those in the center due to the skin effect during microneedle excitation.
[0056] In this embodiment, the number of microneedles in the x-direction and y-direction of the array can be the same or different. This embodiment uses a 6*6 microneedle array as an example. The number of radio frequency microneedles in both the x-direction and y-direction of the microneedle array is 6, so there are a total of 36 radio frequency microneedles in the microneedle array, which constitute 9 radio frequency microneedle excitation units (refer to...). Figure 12 (101-109), simultaneously solving the problems of uneven energy distribution in both bipolar and unipolar excitation.
[0057] Furthermore, to achieve the above objectives, embodiments of the present invention also propose a radiofrequency microneedle control method, referring to... Figure 14 , Figure 14 This is a schematic flowchart of an embodiment of the radio frequency microneedle control method of the present invention. Figure 14 As shown, in this embodiment, the radio frequency microneedle control method includes:
[0058] Step S01: Based on the relative distance between each radio frequency microneedle excitation unit in the radio frequency microneedle system, construct multiple excitation channels containing a preset number of radio frequency microneedle excitation units.
[0059] It should be noted that simultaneously stimulating multiple radiofrequency microneedles can result in high radiofrequency energy, causing pain for the user. This pain can be alleviated by using a time-sharing method. Time-sharing involves setting up multiple excitation channels, sequentially applying radiofrequency energy from multiple channels within a unit of time, thus reducing the power density per unit time and achieving pain relief. For example, five excitation channels can be set up, dividing the unit of time into five segments, with only one channel active in each segment.
[0060] It should be understood that each excitation channel may include one or more radio frequency (RF) microneedle excitation units, which can be specifically set according to the actual RF energy. When the preset number of RF microneedle excitation units in an excitation channel is one, only one RF microneedle excitation unit is heating at any given time during the excitation process. When the preset number of RF microneedle excitation units in an excitation channel is two, two RF microneedle excitation units are heating simultaneously during the excitation process. The two RF microneedle excitation units in the same excitation channel can be combined according to their relative distance within the RF microneedle system.
[0061] For a preset quantity of two, the two furthest RF microneedle excitation units in the RF microneedle system can be used to construct an excitation channel. Simultaneously, the number of RF microneedle excitation units in the system is determined. If the number is even, the two furthest RF microneedle excitation units are used sequentially to construct the excitation channel until all RF microneedle excitation units in the system have their corresponding excitation channel. If the number is odd, the two furthest RF microneedle excitation units are used sequentially to construct the excitation channel until one RF microneedle excitation unit remains unconstructed as an excitation channel. This remaining unit is then used to construct the excitation channel, ensuring that all RF microneedle excitation units in the system have their corresponding excitation channel. For example, refer to the above... Figure 12 First, the radio frequency microneedle excitation units (101 and 109 in the figure) that are farthest apart in the radio frequency microneedle system are combined to construct the first excitation channel. Then, the radio frequency microneedle excitation units (103 and 107 in the figure) that are farthest apart after removing radio frequency microneedle excitation units 101 and 109 are combined to construct the second excitation channel. The above operation is then performed to sequentially obtain radio frequency microneedle excitation units (104 and 106 in the figure) to construct the third excitation channel, and radio frequency microneedle excitation units (102 and 108 in the figure) to construct the fourth excitation channel. Finally, radio frequency microneedle excitation unit 105 is left alone as the fifth excitation channel.
[0062] Step S02: According to the preset timing sequence, inject the externally input radio frequency energy into each excitation channel to heat the target area.
[0063] It should be noted that the preset timing sequence can be the order in which the first to fifth excitation channels operate within a unit of time. For example, the timing sequence of the excitation channel corresponding to the RF microneedle excitation unit that is furthest away from the other excitation channels can be set as the first timing sequence; the preset timing sequence of each excitation channel can be set sequentially from farthest to closest relative distance between the RF microneedle excitation units. That is, the first to fifth excitation channels are turned on sequentially.
[0064] As a way of comparison, refer to Figure 15 , Figure 15 This is a temperature distribution diagram of bipolar excitation time-division heating in one embodiment of the radio frequency microneedle control method of the present invention. Wherein, as... Figure 15 The radiofrequency microneedles of this invention employ a time-division heating method, with each radiofrequency microneedle excitation unit heating sequentially to reduce the power density per unit time, thereby relieving pain. However, because the radiofrequency microneedle excitation units are not uniformly grouped for excitation, adjacent linear excitation patterns may exist during the heating process, resulting in uneven heating.
[0065] This embodiment of the radio frequency microneedle control method employs a time-sharing heating approach, grouping the radio frequency microneedle excitation units according to relative distance, as described above. Figure 16 , Figure 16 This is a temperature distribution diagram of the microneedle system after time-division heating based on bipolar excitation according to the excitation channel in one embodiment of the radio frequency microneedle control method of the present invention. The bipolar excitation method saves hardware control channels, and while constructing the excitation channel according to the relative distance of the radio frequency microneedle excitation units reduces the power density per unit time, it ensures uniform heating of the radio frequency microneedle system, thus balancing pain relief and excitation efficiency. Figure 16 The temperature distribution in the image is the temperature distribution 100ms after the first to fifth excitation channels have been heated sequentially.
[0066] In one embodiment of the present invention, in a preset timing sequence, the radio frequency microneedle excitation units corresponding to excitation channels in adjacent timing sequences are not spatially adjacent. This ensures that the radio frequency microneedles are not adjacent at the previous moment and the next moment in the heating process of the radio frequency microneedle system, thus separating the thermal stimulation areas and avoiding significant pain caused by a large area of thermal stimulation areas being connected within a short period of time.
[0067] In this embodiment, multiple excitation channels containing a preset number of radiofrequency microneedle excitation units are constructed based on the relative distance between the excitation units of each radiofrequency microneedle in the radiofrequency microneedle system. Radiofrequency energy is sequentially injected into each excitation channel according to a preset timing sequence to heat the target area. By designing the positional distribution of the radiofrequency microneedles, the heating effect of each microneedle is more uniform in multi-needle situations, and the effective volume of a single acupuncture treatment can be increased, achieving better therapeutic effects. The use of a time-division traversal method helps to alleviate pain.
[0068] In addition, to achieve the above objectives, this invention also proposes a medical device. Since the medical device includes the above-mentioned radiofrequency microneedle system and can also implement the radiofrequency microneedle control method, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated here.
[0069] The above are merely preferred embodiments of the present invention and do not limit the scope of the patent. Any equivalent structural or procedural transformations made based on the description and drawings of the present invention, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection of the present invention.
[0070] Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0071] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.
[0072] Furthermore, the use of terms such as "first" and "second" in this invention is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this invention.
Claims
1. A radio frequency microneedle system, characterized in that, The radio frequency microneedle system includes: a radio frequency microneedle excitation unit; The radio frequency microneedle excitation unit includes an array structure consisting of more than two radio frequency microneedles. The radio frequency microneedles in the array structure are arranged according to the points of uniform energy distribution; Each of the aforementioned radio frequency microneedles is used to apply externally input radio frequency energy to the tissue area corresponding to its location for heating; The temperature of the gap between each adjacent radio frequency microneedle is the same when heated.
2. The radio frequency microneedle system as described in claim 1, characterized in that, The radio frequency microneedle excitation unit includes four radio frequency microneedles, and the array structure is a rectangular array structure. The four radio frequency microneedles are positioned at the corners of the rectangular array structure; The two radio frequency microneedles located diagonally have the same polarity.
3. The radio frequency microneedle system as described in claim 2, characterized in that, The radio frequency microneedles are bipolar microneedle systems; In the rectangular array structure, adjacent radio frequency microneedles are respectively configured as positive and negative microneedles.
4. The radio frequency microneedle system as described in claim 1, characterized in that, The radio frequency microneedle excitation unit includes an even number of radio frequency microneedles, and the array structure is a circular array structure. Each of the radio frequency microneedles is disposed on the circumference of the circular array structure, and is positioned according to the circumference diameter; The spacing between adjacent radio frequency microneedles is the same; The two radio frequency microneedles located at positions corresponding to the circumference diameter have the same polarity.
5. The radio frequency microneedle system according to any one of claims 1-4, characterized in that, The radio frequency microneedle system includes: a microneedle array; The microneedle array includes multiple radio frequency microneedle excitation units.
6. The radio frequency microneedle system as described in claim 5, characterized in that, The microneedle array includes an even number of radio frequency microneedles in both the x and y directions of the array; The microneedle array is obtained by using the radio frequency microneedle excitation unit constructed from four radio frequency microneedles as a repeating unit.
7. A radio frequency microneedle control method, applied to the radio frequency microneedle system as described in any one of claims 1-6, characterized in that, The method includes the following steps: Based on the relative distance between each radio frequency microneedle excitation unit in the radio frequency microneedle system, multiple excitation channels containing a preset number of the radio frequency microneedle excitation units are constructed. According to a preset timing sequence, externally input radio frequency energy is injected into each of the excitation channels to heat the target area.
8. The radio frequency microneedle control method as described in claim 7, characterized in that, The preset quantity is one; In the preset timing sequence, the radio frequency microneedle excitation units corresponding to the excitation channels of adjacent timing sequences are not spatially adjacent.
9. The radio frequency microneedle control method as described in claim 7, characterized in that, The preset quantity is two. The step of constructing multiple excitation channels containing the preset quantity of the radio frequency microneedle excitation units based on the relative distance between each radio frequency microneedle excitation unit in the radio frequency microneedle system includes: The excitation channel is constructed by acquiring the two radio frequency microneedle excitation units that are furthest apart from each other in the radio frequency microneedle system. When the number of radio frequency microneedle excitation units in the radio frequency microneedle system is an even number, the excitation channel is constructed by sequentially using the two radio frequency microneedle excitation units that are furthest apart from each other, until all the radio frequency microneedle excitation units in the radio frequency microneedle system have their corresponding excitation channels. When the number of radio frequency microneedle excitation units in the radio frequency microneedle system is odd, the excitation channel is constructed sequentially using the two radio frequency microneedle excitation units that are furthest apart from each other, until there is a remaining radio frequency microneedle excitation unit in the radio frequency microneedle system that has not been constructed as the excitation channel. The remaining radio frequency microneedle excitation unit is then used to construct the excitation channel, so that all the radio frequency microneedle excitation units in the radio frequency microneedle system have their corresponding excitation channels.
10. The radio frequency microneedle control method as described in claim 9, characterized in that, Before the step of sequentially injecting externally input radio frequency energy into each of the excitation channels according to a preset timing sequence to heat the target area, the method further includes: The timing sequence of the excitation channel corresponding to the radio frequency microneedle excitation unit that is farthest away from the excitation channel is set as the first timing sequence; The preset timing sequence of each excitation channel is set sequentially from farthest to closest according to the relative distance between the radio frequency microneedle excitation units.
11. A medical device, characterized in that, The medical device includes the radiofrequency microneedle system as described in any one of claims 1 to 6, and applies the radiofrequency microneedle control method as described in any one of claims 7 to 10.