Radio frequency device for regulating and controlling skin temperature

Abstract

The utility model discloses a radio frequency device for regulating and controlling skin temperature, which comprises a radio frequency signal generator for transmitting a radio frequency pulse signal and a pulse excitation signal for regulating and controlling the skin temperature; the electrode is used for receiving the radio-frequency pulse signal and generating a radio-frequency heat effect into the skin; the temperature sensor is arranged on the electrode or near the electrode and is used for detecting real-time temperature data of the skin in real time; the controller is used for controlling the radio frequency signal generator to output the pulse excitation signal for exciting the skin to reach the target temperature through one or more times based on the difference value between the temperature data and the target temperature; at least one of duty ratio, voltage and power of the pulse excitation signal is different from that of the radio frequency pulse signal, and the pulse width of the pulse excitation signal is smaller than that of the radio frequency pulse signal. When the real-time temperature data of the skin is abnormal in temperature rise, the skin is stimulated by one or more pulse excitation signals, so that the problem of abnormal temperature rise of the skin is effectively solved.

Description

Technical Field

[0001] This utility model relates to the field of radio frequency control technology, and in particular to a radio frequency device for regulating skin temperature. Background Technology

[0002] Conventional temperature control algorithms typically employ PID control. A PID controller calculates a control variable based on the current temperature deviation, cumulative deviation, and rate of change of deviation. This control variable adjusts the output power of the controlled object to bring the temperature as close as possible to the setpoint and maintain it within that range. However, for biological tissues, while there is a general correlation between the amount of power applied and the temperature rise, it is not a guaranteed relationship. The same power applied to different receptors or different parts of the same receptor will produce varying degrees of temperature rise. Therefore, how to stably and effectively control the temperature rise of biological tissues by controlling the power output is a topic worthy of further research. Utility Model Content

[0003] The main purpose of this invention is to propose a radio frequency device for regulating skin temperature, which aims to incorporate pulse stimulation control into the PID temperature control algorithm to stably and effectively control the temperature rise of biological tissues.

[0004] To achieve the above objectives, the present invention proposes a radio frequency device for regulating skin temperature, the radio frequency device for regulating skin temperature comprising: a radio frequency signal generator for transmitting radio frequency pulse signals and a pulse excitation signal for regulating skin temperature;

[0005] Electrodes are used to receive the radio frequency pulse signal and generate a radio frequency thermal effect into the skin;

[0006] A temperature sensor is disposed on or near the electrode;

[0007] The temperature sensor is used to detect real-time temperature data of the skin.

[0008] A controller is configured to, based on the difference between the temperature data and the target temperature, control the radio frequency signal generator to output the pulse excitation signal once or multiple times to excite the skin to reach the target temperature; wherein, at least one of the duty cycle, voltage, and power of the pulse excitation signal is different from that of the radio frequency pulse signal, and the pulse width of the pulse excitation signal is smaller than that of the radio frequency pulse signal.

[0009] In one embodiment, the radio frequency device for regulating skin temperature further includes:

[0010] The DC power supply is electrically connected to the controller to power the controller; and

[0011] The DC power supply is electrically connected to the RF signal generator and is used for the RF signal generator to convert DC to AC output RF pulse signals.

[0012] In one embodiment, the radio frequency device for regulating skin temperature includes: a human-computer interaction display panel;

[0013] The human-computer interaction display panel is connected to the controller;

[0014] The human-machine interface display panel is used to communicate with the controller in real time to display the duty cycle, pulse width, amplitude and power of the pulse excitation signal output by the radio frequency signal generator, as well as the real-time temperature of the skin.

[0015] In one embodiment, the radio frequency pulse signal, based on the characteristics of skin tissue, has a preset constant output power, voltage and duty cycle, and generates a target temperature rise curve within the skin.

[0016] In one embodiment, the radio frequency signal generator is further configured to stop decreasing or increasing the preset power when the duration of decreasing or increasing the preset power reaches a second preset time.

[0017] In one embodiment, the controller is configured to control the radio frequency signal generator to output the pulse excitation signal multiple times when the real-time temperature data is less than the target temperature, wherein at least one of the voltage, power, and duty cycle of the pulse excitation signal is greater than the radio frequency pulse signal within a first preset safety range.

[0018] In one embodiment, the controller is configured to control the output of the pulse excitation signal at a first preset time when the real-time temperature data is less than the target temperature, and to stop the output at a second preset time, repeating this process multiple times.

[0019] In one embodiment, the controller is configured to control the radio frequency signal generator to output the pulse excitation signal multiple times when the real-time temperature data is greater than the target temperature, wherein at least one of the voltage, power, and duty cycle of the pulse excitation signal is less than the radio frequency pulse signal within a second preset safety range.

[0020] In one embodiment, the controller is configured to determine the duration of the data acquisition interval and monitor the temperature data according to the duration of the data acquisition interval.

[0021] In one embodiment, the electrode is used to penetrate the skin to apply radiofrequency energy.

[0022] In one embodiment, the electrode is used to apply radiofrequency energy by contacting the skin surface.

[0023] This utility model discloses a radio frequency (RF) device for regulating skin temperature. The RF device includes: an RF signal generator for transmitting RF pulse signals and pulse excitation signals for regulating skin temperature; electrodes for receiving the RF pulse signals and generating a radio frequency thermal effect within the skin; a temperature sensor disposed on or near the electrodes; the temperature sensor for real-time detection of skin temperature data; and a controller that, based on the difference between the temperature data and the target temperature, adjusts the output of the RF signal generator to the pulse excitation signal once or multiple times to stimulate the skin to reach the target temperature. The pulse excitation signal has at least one different value from the RF pulse signal in terms of duty cycle, voltage, and power, and its pulse width is smaller than that of the RF pulse signal. When the temperature sensor detects abnormalities in the real-time skin temperature data, such as slow or no temperature rise, and the target temperature rise curve is not reached, the RF signal generator is controlled to output a pulse excitation signal to effectively stimulate the skin to rise or fall. One or more pulse excitation signal outputs effectively resolve abnormal temperature rise at the treatment site, restoring the RF heating effect to normal. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0025] Figure 1 A schematic diagram of the structure of the first embodiment of the radio frequency device for regulating skin temperature provided by this utility model;

[0026] Figure 2 A temperature rise curve diagram of the second embodiment of the radio frequency device for regulating skin temperature provided by this utility model;

[0027] Figure 3 This is a schematic diagram of the third embodiment of the radio frequency device for regulating skin temperature provided by this utility model.

[0028] Explanation of icon numbers:

[0029]

[0030]

[0031] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

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

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

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

[0035] Conventional temperature control algorithms typically employ PID control. A PID controller calculates a control parameter based on the current temperature deviation, cumulative deviation, and rate of change of deviation. This parameter is used to adjust the output power of the controlled object, thereby bringing the temperature as close as possible to the setpoint and maintaining it around that value. However, for biological tissues, while there is a general correlation between the magnitude of the applied power and temperature rise, it is not a guaranteed relationship. The same power applied to different receptors or different parts of the same receptor will not produce entirely consistent temperature rise effects. Therefore, how to stably and effectively control the temperature rise of biological tissues by controlling the power output is a topic worthy of further research.

[0036] like Figure 1 The diagram shown is a structural diagram of the first embodiment of the radio frequency device for regulating skin temperature proposed in this embodiment.

[0037] This utility model discloses a radio frequency (RF) device for regulating skin temperature. The RF device for regulating skin temperature includes: an RF signal generator 20 for transmitting RF pulse signals and pulse excitation signals for regulating skin temperature; an electrode 40 for receiving the RF pulse signals and generating a radio frequency thermal effect in the skin; a temperature sensor 10 disposed on or near the electrode; the temperature sensor 10 for real-time detection of real-time skin temperature data; and a controller 30 for controlling the RF signal generator to output the pulse excitation signal to excite the skin to reach the target temperature by controlling it once or multiple times based on the difference between the temperature data and the target temperature; wherein, at least one of the duty cycle, voltage, and power of the pulse excitation signal is different from that of the RF pulse signal, and the pulse width of the pulse excitation signal is smaller than that of the RF pulse signal.

[0038] Based on a large amount of experimental data, the skin tissue heating effect is not ideal under preset radio frequency constant power, constant voltage or constant duty cycle output conditions.

[0039] When the temperature sensor 10 detects abnormalities in the real-time temperature data of the skin, such as slow or no temperature rise, and fails to reach the target temperature rise curve, the radio frequency signal generator is controlled to output the pulse excitation signal once or multiple times to excite the skin to reach the target temperature. The high-intensity, multiple stimulations of the skin tissue can effectively solve the abnormal temperature rise of the treatment site and bring the temperature rise effect back to normal.

[0040] It should be noted that the output of the radio frequency pulse signal and the pulse excitation signal is a sine wave, a square wave, or a combination of a sine wave and a square wave. The pulse width of the pulse excitation signal is significantly smaller than that of the radio frequency pulse signal. The pulse excitation signal can output high energy at multiple frequencies. When the pulse excitation signal is added to the PID temperature control algorithm, and the pulse width of the pulse excitation signal is smaller than that of the radio frequency pulse signal, the high intensity and multiple frequencies effectively stimulate the skin tissue to heat up or cool down, so as to reach the target temperature curve.

[0041] Specifically, the RF signal generator outputs a pulse excitation signal. Compared to the original RF pulse signal, at least one of its duty cycle, voltage, and power is significantly changed. After the pulse excitation signal lasts for a short preset time (several pulse widths of the pulse excitation signal), the RF signal generator outputs the original RF pulse signal again. The duty cycle refers to the ratio of the time occupied by the pulse to the total time within one cycle; the pulse width refers to the duration of the output RF energy within one pulse cycle.

[0042] The electrodes are used to penetrate the skin and apply radiofrequency energy.

[0043] It should be noted that radiofrequency electrodes come in various types and shapes to meet the needs of different conditions and surgeries, including invasive and non-invasive electrodes. The invasive electrodes include a single microneedle or an array of microneedles. Electromagnetic waves are conducted to the microneedle electrode, which then releases energy into the skin tissue. The microneedle electrode can precisely target specific layers of the skin, generally the skin tissue below the dermis.

[0044] The electrodes are used to apply radiofrequency energy to the skin surface.

[0045] It is understood that the electrodes are non-invasive, including radiofrequency masks. These non-invasive electrodes, when attached to the skin surface, radiate electromagnetic waves to create a radiofrequency thermal effect, thereby achieving collagen regeneration.

[0046] In this invention, when the controller detects abnormalities such as slow or no temperature rise at the treatment site, it controls the radio frequency signal generator to output a radio frequency pulse excitation signal within a safe range, which differs from the original radio frequency pulse signal in at least one of its duty cycle, voltage, and power. After stimulating the skin tissue with the pulse excitation signal, the abnormal temperature rise at the treatment site is effectively resolved, restoring the temperature rise effect to normal.

[0047] like Figure 2 The figure shows the temperature rise curve of the second embodiment of the radio frequency device for regulating skin temperature proposed in this embodiment.

[0048] Based on the first embodiment described above, a second embodiment of the radio frequency device for regulating skin temperature according to the present invention is proposed.

[0049] Understandably, the principle of conventional PID temperature control is to calculate a control variable based on the current temperature deviation, cumulative deviation, and rate of change of deviation. This control variable is used to adjust the power; higher power results in faster temperature rise, while lower power results in slower temperature rise or maintains a constant temperature. Figure 2 As shown, when the power of the radio frequency signal generator is 10W, the temperature rise rate of the treatment site is faster than when the power of the radio frequency signal generator is 2W. The ideal temperature rise curve is as follows... Figure 2 As shown, however, the actual heating effect on human biological tissues is not always ideal. It is common for low power to heat up quickly, while high power may heat up slowly or even not at all.

[0050] When the real-time temperature data is lower than the target temperature, the radio frequency signal generator is controlled to output a pulse excitation signal at a first preset time and to stop outputting at a second preset time. The pulse excitation signal can be output repeatedly.

[0051] It should be noted that when the temperature data of the treatment site shows abnormalities such as slow or no temperature rise, the controller controls the radio frequency signal generator to output a pulse excitation signal. The pulse excitation signal output by the radio frequency signal generator has an output power, voltage, or duty cycle within a safe range. For example, the radio frequency pulse excitation signal may amplify or reduce the output power at a first preset time, and then return to the original constant output power at a second preset time to continue normal treatment. By repeatedly outputting the pulse excitation signal, the treatment site can effectively resolve the abnormal temperature rise situation after high-intensity, high-frequency pulse stimulation, and the temperature rise effect can return to normal.

[0052] Understandably, compared to a normal constant power RF pulse signal, a pulse excitation signal can not only have higher output power, but also higher output voltage or higher output duty cycle. It outputs a high-energy pulse excitation signal at a first preset time, and then reverts to the original RF pulse signal at a second preset time.

[0053] Throughout the treatment phase, if the skin tissue temperature does not rise ideally, the pulse excitation signal can be repeatedly output, wherein the pulse width of the pulse excitation signal is smaller than the pulse width of the radiofrequency pulse signal.

[0054] Specifically, the radio frequency (RF) signal generator uses a 5W power output and is applied to a specific area of ​​biological tissue, aiming to raise the temperature of that area to 45°C within 500ms. After 200ms, the controller monitors the tissue and detects that the temperature rise is slow or nonexistent, failing to follow the set temperature change, and calculates that it's impossible to reach 45°C by 500ms. At this first preset time of 200ms, the controller controls the RF signal generator to output a pulse excitation signal, abruptly changing the output power to 10W or 0W for 10-20ms. After the second preset time, the power quickly returns to 5W and remains stable, likely causing the tissue temperature to return to normal, ultimately reaching 45°C by 500ms.

[0055] Similarly, the controller is used to control the radio frequency signal generator to output the pulse excitation signal multiple times when the real-time temperature data is less than the target temperature, wherein at least one of the voltage, power and duty cycle of the pulse excitation signal is greater than the original radio frequency pulse signal within a first preset safety range.

[0056] Optionally, the controller can use an STM32F103RCT6 power supply board with a 24MHz clock speed, 64Kb RAM, and 8Kb SRAM. The 24MHz clock speed refers to the frequency of the processor's internal clock signal; a higher clock speed generally results in a faster processor. 64Kb RAM (Random Access Memory) is computer memory used for storing and accessing data; 64Kb indicates a RAM storage capacity of 64 kilobits (or 65536 bits). 8Kb SRAM (Static Random Access Memory) is memory with static storage capabilities; it can retain data without a refresh circuit; 8Kb indicates an SRAM storage capacity of 8 kilobits (or 8192 bits).

[0057] Understandably, the output power of the pulse excitation signal, within a first preset safety range, is greater than that of the original radiofrequency pulse signal, ensuring that the pulse excitation signal with higher output power, higher voltage, or higher duty cycle remains within the safe range tolerated by the skin tissue. Because different treatment sites have different biological characteristics—for example, due to different impedances at different skin locations—the preset constant power of the matched radiofrequency pulse signal varies. The controller pre-sets the first preset safety range value according to the specific treatment site. If the temperature rise is found to be unsatisfactory during treatment, a pulse excitation signal with higher output power is output multiple times.

[0058] Specifically, the output pulse excitation signal of the RF signal generator is at least one of the following: adjusting the power, duty cycle, frequency, and amplitude of the RF pulse signal. This includes using PWM (Pulse Width Modulation) technology, adjusting the supply voltage of the DC main power supply, and changing the gain of the power amplifier. This application can employ a PWM pulse width modulation method. By using a pre-set excitation signal with a large duty cycle, when an unsatisfactory temperature rise occurs, the controller outputs multiple excitation signals with large duty cycles based on PWM pulse modulation.

[0059] The controller is configured to control the radio frequency signal generator to output the pulse excitation signal multiple times when the real-time temperature data is greater than the target temperature, wherein at least one of the voltage, power, and duty cycle of the pulse excitation signal is less than that of the radio frequency pulse signal within a second preset safety range.

[0060] It should be noted that the pulse excitation signal, within the second preset safety range, has a lower voltage, power, and duty cycle than the original radiofrequency pulse signal, and is also related to the minimum effect that skin tissue can tolerate radiofrequency treatment. When the safe power range for radiofrequency treatment of the skin is 3W to 10W, the radiofrequency pulse signal is 5W. After adding the radiofrequency pulse excitation signal, it is reduced from 5W to 3W, or increased to 10W. For user safety, the power of the excitation signal cannot be too high or too low; otherwise, the radiofrequency treatment will be ineffective. Of course, the second preset safety range is also set in advance. For example, if the normal radiofrequency pulse signal power is 5W, and the temperature rises too quickly, by setting the second preset safety range to 2W in advance, multiple pulse signals of 3W excitation signal will be output, thus adjusting the skin tissue to reach the target temperature rise curve while ensuring the radiofrequency treatment effect.

[0061] The controller is used to determine the sampling interval and monitor the temperature data according to the sampling interval.

[0062] It should be noted that the controller monitors temperature data every 100ms. Based on the temperature data collected by the controller, it calculates and transmits the PWM value to the radio frequency signal generator in real time, providing radio frequency pulse signals to the electrodes.

[0063] The controller is used to periodically send radio frequency pulse signals to the radio frequency signal generator at intervals of the acquisition interval; the radio frequency signal generator is used to adjust the output power according to the radio frequency pulse signals.

[0064] Understandably, the RF signal generator receives RF pulse signal commands from the controller and adjusts the output power of the 1M rectangular waveform by setting the duty cycle of the pulse excitation signal. The operating frequency of the RF signal generator can be 1MHz, and the controller is connected to the 1M RF signal generator via an RS232 serial port.

[0065] Optionally, the radio frequency signal generator uses a 5W power output and is applied to the treatment area on the human body, aiming to raise the temperature of the treatment area to 45°C within 500ms. The controller receives the temperature of the treatment area every 100ms, and the temperature sensor detects the temperature data of the treatment area in real time. When the detected temperature is normal, the controller controls the radio frequency signal generator to output an adjusted pulse excitation signal multiple times every 100ms. The radio frequency signal generator maintains a stable output of 5W power until the temperature of the treatment area reaches 45°C within 500ms.

[0066] In this embodiment, the controller periodically receives skin temperature data collected by the temperature sensor and sends radio frequency pulse signals to the radio frequency signal generator based on the temperature data. When the controller detects abnormal temperature data, such as the temperature data not changing according to the set temperature or failing to reach the target temperature within a preset time, the controller controls the radio frequency signal generator to output a pulse excitation signal. The pulse excitation signal increases or decreases the power, voltage, or duty cycle within a safe range for a first preset time, and then returns to the original value for a second preset time. This application controls the radio frequency signal generator to generate a pulse excitation signal when the temperature rise is not ideal, enabling the electrode to more stably and effectively control the temperature in biological tissue.

[0067] like Figure 3 The diagram shown is a structural schematic of the third embodiment of the radio frequency device for regulating skin temperature proposed in this embodiment.

[0068] Based on the first and / or second embodiments described above, a third embodiment of the radio frequency device for regulating skin temperature according to the present invention is proposed.

[0069] The controller 30 is used to control the radio frequency signal generator to output a pulse excitation signal once or multiple times when the temperature data does not change according to the set temperature. The pulse width of the pulse excitation signal is smaller than the pulse width of the radio frequency pulse signal, so as to excite the skin to reach the target temperature.

[0070] It should be noted that when the radio frequency signal generator 20 outputs the radio frequency pulse signal once, if the controller 30 detects that the temperature data still does not change according to the set temperature and cannot reach the target temperature within the preset time, the controller 30 controls the radio frequency signal generator to repeatedly output the pulse excitation signal until the temperature data reaches the set temperature.

[0071] It is understood that the temperature sensor 10 is used to measure the temperature of the treatment site, and the radio frequency signal generator 20 applies radio frequency energy to the treatment site through electrodes. The temperature sensor is located on the electrodes to facilitate the measurement of the temperature of the treatment site. The temperature sensor 10 of this application can use a thermistor. The temperature acquisition controller is used to receive the signal from the thermistor and calculate the temperature value.

[0072] Optionally, the temperature sensor 10 can be a resistance temperature detector (RTD), a thermocouple, an infrared temperature sensor, or a digital temperature sensor.

[0073] The radio frequency device for regulating skin temperature includes: a human-machine interface display panel 50; the human-machine interface display panel is connected to the controller; the human-machine interface display panel is used to communicate with the controller in real time to display the duty cycle, pulse width, amplitude and power of the radio frequency signal generator, as well as the real-time temperature of the skin.

[0074] Understandably, human-computer interaction display panels, as an important component of human-computer interaction interfaces (HCI or HMI), enable information exchange between humans and computer systems. They are typically touch panels or touch screens, which are sensor-based liquid crystal display devices capable of receiving input signals from touch. When a user touches a graphical button on the screen, the haptic feedback system on the screen drives various connected devices according to a pre-programmed program, enabling interaction between the user and the computer system.

[0075] Specifically, the human-computer interaction display panel displays information such as the temperature data detected inside the controller, the power of the radio frequency signal generator, and the treatment time, which are converted into text, charts, and other forms and displayed to the user in real time. Users can interact with the controller by touching buttons, icons, etc. on the screen to input commands or operation information, such as stopping treatment or increasing the power of the radio frequency signal generator.

[0076] It should be noted that the controller communicates in real time with the 1M RF signal generator, temperature acquisition controller, and human-machine interface display via RS232 serial port.

[0077] The radio frequency device for regulating skin temperature further includes: a DC power supply 60; electrically connected to the controller for supplying power to the controller. The DC power supply is electrically connected to the radio frequency signal generator for the radio frequency signal generator to output radio frequency pulse signals in a DC-to-AC conversion manner.

[0078] It should be noted that the radio frequency signal generator 20 requires a DC power supply, but the socket generally provides 220V AC power. In order to facilitate the use of the radio frequency device used to regulate skin temperature, a DC power supply is required to convert the AC mains power into the DC power required by the radio frequency signal generator and controller 30, while maintaining voltage stability to ensure that the radio frequency signal generator can work stably and safely.

[0079] Specifically, the DC power supply 60 also includes the following modules:

[0080] 1) Overvoltage protection: When the circuit voltage exceeds the preset value, the overvoltage protection circuit will cut off the power supply to prevent equipment damage;

[0081] 2) Overcurrent protection: When the circuit current exceeds the preset value, the overcurrent protection circuit will limit the current or cut off the power supply to prevent the 1M RF signal generator from overheating or being damaged.

[0082] 3) Short circuit protection: When a short circuit occurs in the circuit, the short circuit protection circuit will quickly cut off the power supply to prevent equipment damage or fire and other safety accidents.

[0083] In this embodiment, temperature data is collected by temperature sensor 10, and the temperature sensor transmits the temperature data to controller 30. Controller 30 and human-computer interaction display panel 50 communicate in real time. Human-computer interaction display panel 50 displays data such as skin tissue temperature, duty cycle, pulse width, amplitude, and power of pulse excitation signal to the user.

[0084] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or system. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or system that includes that element.

[0085] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A radio frequency device for regulating skin temperature, characterized in that, The radio frequency device for regulating skin temperature includes: Radio frequency signal generator, used to transmit radio frequency pulse signals and pulse excitation signals for regulating skin temperature; Electrodes are used to receive the radio frequency pulse signal and generate a radio frequency thermal effect into the skin; A temperature sensor is disposed on or near the electrode; The temperature sensor is used to detect real-time temperature data of the skin. A controller is configured to, based on the difference between the temperature data and the target temperature, control the radio frequency signal generator to output the pulse excitation signal once or multiple times to excite the skin to reach the target temperature; wherein, at least one of the duty cycle, voltage, and power of the pulse excitation signal is different from that of the radio frequency pulse signal, and the pulse width of the pulse excitation signal is smaller than that of the radio frequency pulse signal.

2. The radio frequency device for regulating skin temperature as described in claim 1, characterized in that, The radio frequency device for regulating skin temperature also includes: a DC power supply; The DC power supply is electrically connected to the controller to power the controller; and The DC power supply is electrically connected to the RF signal generator and is used for the RF signal generator to convert DC to AC output RF pulse signals.

3. The radio frequency device for regulating skin temperature as described in claim 1, characterized in that, The radio frequency device for regulating skin temperature includes: a human-computer interaction display panel; The human-computer interaction display panel is connected to the controller; The human-machine interface display panel is used to communicate with the controller in real time to display the duty cycle, pulse width, amplitude and power of the pulse excitation signal output by the radio frequency signal generator, as well as the real-time temperature of the skin.

4. The radio frequency device for regulating skin temperature as described in claim 1, characterized in that, The radio frequency pulse signal, based on the characteristics of skin tissue, has a preset constant output power, voltage and duty cycle, and generates a target temperature rise curve within the skin.

5. The radio frequency device for regulating skin temperature as described in claim 4, characterized in that, The controller is configured to control the radio frequency signal generator to output the pulse excitation signal multiple times when the real-time temperature data is less than the target temperature, wherein at least one of the voltage, power, and duty cycle of the pulse excitation signal is greater than the radio frequency pulse signal within a first preset safety range.

6. The radio frequency device for regulating skin temperature as described in claim 5, characterized in that, The controller is configured to control the output of the pulse excitation signal at a first preset time when the real-time temperature data is less than the target temperature, and to stop the output at a second preset time, repeating this process multiple times.

7. The radio frequency device for regulating skin temperature as described in claim 1, characterized in that, The controller is configured to control the radio frequency signal generator to output the pulse excitation signal multiple times when the real-time temperature data is greater than the target temperature, wherein at least one of the voltage, power, and duty cycle of the pulse excitation signal is less than the radio frequency pulse signal within a second preset safety range.

8. The radio frequency device for regulating skin temperature as described in claim 1, characterized in that, The controller is used to determine the sampling interval and monitor the temperature data according to the sampling interval.

9. The radio frequency device for regulating skin temperature as described in claim 1, characterized in that, The electrodes are used to penetrate the skin and apply radiofrequency energy.

10. The radio frequency device for regulating skin temperature as described in claim 1, characterized in that, The electrodes are used to apply radiofrequency energy to the skin surface.

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