A radiofrequency treatment device

Abstract

The present invention relates to the technical field of medical devices, and particularly relates to a method and device for controlling the tissue temperature field by radio frequency power. The above method includes: Step S1, when the radio frequency treatment device has a pre-output state, the pre-output state is: controlling the output of radio frequency energy and refrigerant with default values; Step S2, when the radio frequency treatment device also has a model control state, the model control state is: controlling radio frequency energy and refrigerant through a default model, an adjustment model, and a stabilization model; the default model is a preset temperature model; the adjustment model is detected by a detection mechanism and adjusts the radio frequency energy parameters based on the detection data on the basis of the default model; the stabilization model combines the static state of the default model and the dynamic changes of the adjustment model, thereby making a state judgment on whether the adjustment model is stable. The above method accurately controls the radio frequency energy so that the temperature of the radio frequency energy acting on the target tissue layer is controllable, realizes the change of the radio frequency energy corresponding to the change of the tissue subcutaneous temperature field, and enables the radio frequency energy output to achieve an ideal effect.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly to a method and device for controlling the tissue temperature field by radio frequency power. Background Art

[0002] For fields such as medical aesthetic skin treatment, it is necessary to ensure precise control of the target tissue temperature field, so that the temperature field changes according to the given radio frequency energy, thereby providing a guiding treatment with an effective temperature for skin treatment, preventing subcutaneous tissue from necrosis due to high temperature, and promoting the decomposition and recombination of cells, so that the radio frequency energy output can achieve an ideal effect. Among them, the radio frequency system includes: a radio frequency generator, a handle assembly, a treatment head, etc. Among them, the radio frequency generator system includes a display assembly, a control assembly, a radio frequency power output assembly, and a gas path assembly; multiple components inside the radio frequency generator control the radio frequency power to output radio frequency energy to the target tissue at the treatment head (non-invasively) through the handle; multiple components inside the radio frequency generator control the gas path assembly to provide refrigerant to the treatment head through the handle to reduce the temperature of the electrode contact surface, thereby reducing the skin surface temperature; the temperature at the treatment head is monitored and transmitted back to the host, and different radio frequency energy output levels are adjusted through the display assembly, and different temperature gradients are achieved for the target tissue temperature.

[0003] The existing radio frequency systems lack relevant methods and devices for precisely controlling radio frequency energy. The change of radio frequency energy corresponding to the change of the tissue subcutaneous temperature field cannot be precisely controlled, and further the temperature of the radio frequency energy acting on the target tissue layer cannot be precisely controlled, affecting the skin treatment effect. Summary of the Invention

[0004] The present invention provides a method and device for controlling the tissue temperature field by radio frequency power. To solve the problem in the prior art that the change of radio frequency energy corresponding to the change of the tissue subcutaneous temperature field cannot be precisely controlled, and further the temperature of the radio frequency energy acting on the target tissue layer cannot be precisely controlled, affecting the skin treatment effect. The technical solution of the present invention is: A method for controlling the tissue temperature field by radio frequency power, including:

[0005] Step S1, when the radio frequency treatment device has a pre-output state, the pre-output state is: controlling the radio frequency energy and the refrigerant to be output with default values; wherein, the radio frequency energy is pre-output with a low power value, and the refrigerant is pre-output with a small flow rate value;

[0006] Step S2, when the radiofrequency treatment device is in the model control state, the model control state is as follows: controlling radiofrequency energy and refrigerant through the default model, adjustment model, and stabilization model; wherein, the default model is a preset temperature model, the radiofrequency energy is output according to a preset gear, and the output of the refrigerant is temperature-controlled at a flow rate corresponding to the gear; wherein, the adjustment model detects through a detection mechanism: the target tissue temperature, impedance value, and radiofrequency output parameters, and adjusts the radiofrequency energy parameters based on the detected data on the basis of the default model; wherein, the stabilization model combines the static state of the default model and the dynamic changes of the adjustment model, thereby making a state judgment on whether the adjustment model is stable; and, the stabilization model determines whether the energy output of the radiofrequency generator is uniform through a temperature detection mechanism, so as to adjust the response time of the default model and the adjustment model in real time to prevent overshoot effects of radiofrequency energy and refrigerant.

[0007] Optionally, in the pre-output state, the low-power value of the radiofrequency energy is: less than 0.5W, 100ms pulse width; and, in the pre-output state, the small-flow value of the refrigerant is: 0.04ml, 4ms pulse width; and / or,

[0008] In the pre-output state, temperature control is implemented on the radiofrequency treatment device to keep the target tissue temperature at 18 degrees, so as to avoid frostbite and crystallization, and while ensuring the treatment effect, it helps to reduce the somatic pain sensation.

[0009] Optionally, in step S2, the default model is a preset temperature model, the radiofrequency energy is output according to a preset gear, and the output of the refrigerant is temperature-controlled at 18 degrees at a flow rate corresponding to the gear.

[0010] Optionally, the default model is a temperature model summarized from multiple repeated experiments; the radiofrequency treatment device has 16 gears; and, the default model adjusts the refrigerant volume in the following range through multiple gears: 0.04ml, 4ms pulse width, to 0.17ml, 17ms pulse width;

[0011] The corresponding rising temperature of the fat layer is: 0.5°C to 7.5°C, and at the same time, the range for controlling the skin layer temperature to be lower than the fat layer temperature is: 0.5°C to 1.5°C.

[0012] Optionally, in step S2, if the adjustment model detects a change in the impedance value, within a time of milliseconds, it adjusts the current, voltage, and pulse width of the radiofrequency generator to ensure a constant energy output; at the same time, through multi-channel temperature monitoring, according to the temperature change relationship on the skin surface, it adjusts the refrigerant pulse width in real time to control the constant flow output, so as to maintain the temperature rise relationship in the default model through an adjustable pulse width;

[0013] During the above process, if the output power of the radio frequency generator changes, in the energy control of the next stage, the radio frequency generator makes a default adjustment setting of constant power.

[0014] Optionally, in step S2, the stability model combines the static state of the default model and the dynamic changes of the adjustment model; wherein, the proportional relationship is: stability model = A × adjustment model + B × default model, and A and B are factors that change at different speeds over time, and the values of A and B are proportional to the adjustment time.

[0015] Optionally, under the initially preset normal state: A = B = 0.5;

[0016] In the calculation of the stability model: if the refrigerant and radio frequency energy are much less than expected, then A decreases and B increases; if the refrigerant and radio frequency energy are much greater than expected, then A increases and B decreases;

[0017] Among them, the expected values of the refrigerant and radio frequency energy are: for radio frequency energy, in the 16 gears from 0.5 to 8, it corresponds to 20J to 170J, and for the refrigerant, in the 16 gears from 0.5 to 8 of the radio frequency, it corresponds to 0.12ml to 0.51ml. However, in the actual radio frequency energy output, the energy is adjusted in a closed loop with the impedance, and parameters such as voltage, current, and pulse width are slightly adjusted. In this case, the refrigerant needs to follow the slight adjustment. The refrigerant adjusts its own change rate according to the change rate of the radio frequency energy within 1.2s, and determines a rapid change factor (i.e., A and B) according to the change rate of the radio frequency energy and the change rate of the refrigerant over time. A and B are initially 0.5, and then according to the changes of the adjustment model, A and B will have instantaneous oscillating changes, but will finally return to the state of 0.5 for slight adjustment, without large fluctuations, until the single-shot energy continuous output is completed.

[0018] Optionally, in the radio frequency energy control of the radio frequency treatment device, in the pre-output state: the default low-power value is output, and the radio frequency energy is output at a low power of less than 0.5W for 100ms;

[0019] In the radio frequency energy control of the radio frequency treatment device, during the working stage, a constant radio frequency power is output to the target tissue; at the same time, the radio frequency power parameters and the loop impedance value are monitored and adjusted, but the size of the radio frequency energy is not adjusted, and it does not participate in the adjustment of the refrigerant control to ensure power stability.

[0020] Optionally, in the refrigerant control of the radio frequency treatment device, in the pre-output state: the refrigerant is output with a small flow pulse width of 4ms and a temperature control of 18 degrees to avoid frostbite and crystallization, which helps to weaken the body sensation pain while ensuring the treatment effect.

[0021] In the refrigerant control of the radiofrequency treatment device, during the working stage, when the radiofrequency energy is output according to the energy of the preset gear, the output of the refrigerant is allocated according to the parameters of the adjustment model; and, the radiofrequency treatment device monitors the stability of the output flow rate, the continuous pulse width, the pressure magnitude, and the multi-channel temperature monitoring to realize the regulation work of the adjustment model;

[0022] Among them, the refrigerant adjustment does not participate in the adjustment of the radiofrequency energy magnitude, and is used to ensure the temperature model of the skin contact layer, and the stability of the radiofrequency ensures the heating model of the subcutaneous tissue.

[0023] Optionally, in the refrigerant control of the radiofrequency treatment device, during the working stage, during the 1.2s radiofrequency output process, if the pressure is insufficient or the stability is insufficient, the radiofrequency treatment device maintains the pressure at 6 bar through a liquid pump, and judges the stability again through a flow sensor, and then quickly controls the refrigerant pulse width, and regulates according to the skin surface temperature in the established model, and monitors and adjusts the temperature rise situation within the total duration.

[0024] A radiofrequency treatment device for applying a method of controlling the tissue temperature field by radiofrequency power, comprising: a main body, a handle and a treatment head;

[0025] An electrode sheet for impedance monitoring is arranged on the target tissue; a temperature sensor for temperature acquisition is also arranged on the treatment head.

[0026] The technical solution of the present invention has the following advantages:

[0027] 1. The method for controlling the tissue temperature field by radiofrequency power provided by the present invention includes:

[0028] Step S1, when the radiofrequency treatment device has a pre-output state, the pre-output state is: controlling the radiofrequency energy and the refrigerant to be output with default values; wherein, the radiofrequency energy is pre-output with a low power value, and the refrigerant is pre-output with a small flow rate value;

[0029] Step S2. When the radiofrequency treatment device is in the model control state, the model control state is as follows: controlling the radiofrequency energy and refrigerant through the default model, the adjustment model, and the stabilization model; wherein, the default model is a preset temperature model, the radiofrequency energy is output according to a preset gear, and the output of the refrigerant is temperature-controlled according to the flow rate corresponding to the gear; wherein, the adjustment model detects through a detection mechanism: the target tissue temperature, the impedance value, and the radiofrequency output parameters, and adjusts the radiofrequency energy parameters on the basis of the default model according to the detection data; wherein, the stabilization model combines the static state of the default model and the dynamic changes of the adjustment model, thereby making a judgment on whether the adjustment model is stable; and, the stabilization model judges whether the energy output of the radiofrequency generator is uniform through a temperature detection mechanism, so as to adjust the response time of the default model and the adjustment model in real time to prevent the overshoot effect of the radiofrequency energy and the refrigerant.

[0030] In the present invention, through the pre-output state of the above-mentioned radiofrequency treatment device, and cooperating with the control of the radiofrequency energy and the refrigerant through the default model, the adjustment model, and the stabilization model, it is possible to effectively and precisely control the radiofrequency energy so that the temperature of the radiofrequency energy acting on the target tissue layer is controllable, and the change of the radiofrequency energy corresponds to the change of the subcutaneous temperature field of the tissue. The temperature field changes according to the given radiofrequency energy, thereby providing effective temperature guidance for skin treatment, preventing the subcutaneous tissue from necrosis due to high temperature, promoting the decomposition and recombination of cells, and enabling the radiofrequency energy output to achieve an ideal effect. Among them, the target temperature gradient is: warm on the skin surface, hot in the fat layer, and not hot in the muscle layer.

[0031] 2. The method for controlling the tissue temperature field by radiofrequency power provided by the present invention. In step S2, the default model is a preset temperature model, the radiofrequency energy is output according to a preset gear, and the output of the refrigerant is temperature-controlled at 18 degrees according to the flow rate corresponding to the gear.

[0032] In this embodiment, the radiofrequency energy and the refrigerant control are output with default small values. The radiofrequency energy is output with extremely low power at a very small energy, and the refrigerant output is temperature-controlled at 18 degrees in small flows multiple times, which can effectively avoid frostbite and crystallization, and help weaken the body sensation of pain while ensuring the treatment effect. Description of the Drawings

[0033] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0034] Figure 1Schematic diagram of the gas path structure of the handle and the treatment head provided by the present invention;

[0035] Figure 2 Schematic diagram of the temperature model control of the radiofrequency treatment device provided by the present invention.

[0036] Explanation of reference numerals:

[0037] 1 - Handle; 2 - Treatment head. Detailed implementation manners

[0038] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0039] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0040] In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0041] In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0042] Embodiment 1

[0043] Refer to Figure 1 and Figure 2 , Figure 1 which show the schematic diagram of the gas path structure of the handle and the treatment head in the embodiment of the present invention. Figure 2 which show the schematic diagram of the temperature model control of the radiofrequency treatment device in the embodiment of the present invention. Additionally, the target temperature gradient is: warm on the skin surface, hot in the fat layer, and not hot in the muscle layer.

[0044] The method for controlling the tissue temperature field by radio frequency power provided in this embodiment includes:

[0045] Step S1, when the radio frequency treatment device is in a pre-output state, the pre-output state is: controlling the radio frequency energy and the refrigerant to be output with default values; wherein, the radio frequency energy is pre-output with a low power value, and the refrigerant is pre-output with a small flow rate value; in the pre-output state, the low power value of the radio frequency energy is: less than 0.5 W, 100 ms pulse width; and, in the pre-output state, the small flow rate value of the refrigerant is: 0.04 ml, 4 ms pulse width; during the above process, temperature control is implemented on the radio frequency treatment device to keep the temperature of the target tissue at 18 degrees Celsius, so as to avoid frostbite and crystallization, and help weaken the somatic pain while ensuring the treatment effect.

[0046] Step S2, when the radio frequency treatment device is also in a model control state, the model control state is: controlling the radio frequency energy and the refrigerant through a default model, an adjustment model, and a stability model; wherein, the default model is a preset temperature model, the radio frequency energy is output according to preset gears, and the output of the refrigerant is controlled for temperature according to the flow rate corresponding to the gear; wherein, the adjustment model detects through a detection mechanism: the temperature of the target tissue, the impedance value, and the radio frequency output parameters, and adjusts the radio frequency energy parameters based on the detected data on the basis of the default model; wherein, the stability model combines the static state of the default model and the dynamic changes of the adjustment model, so as to make a state judgment on whether the adjustment model is stable; and, the stability model judges whether the energy output of the radio frequency generator is uniform through a temperature detection mechanism, so as to adjust the response time of the default model and the adjustment model in real time to prevent the overshoot effect of the radio frequency energy and the refrigerant.

[0047] In the above step S2, the default model is a preset temperature model, the radio frequency energy is output according to preset gears, and the output of the refrigerant is controlled for temperature at 18 degrees Celsius according to the flow rate corresponding to the gear. The default model is a temperature model summarized from multiple repeated experiments; the radio frequency treatment device has 16 gears; and, the default model adjusts the refrigerant amount in the following range through multiple gears: 0.04 ml, 4 ms pulse width, to 0.17 ml, 17 ms pulse width; the corresponding rising temperature of the fat layer is: 0.5 °C to 7.5 °C, and at the same time, the range for controlling the skin layer temperature to be less than the fat layer temperature is: 0.5 °C to 1.5 °C.

[0048] In the above step S2, if the adjustment model detects a change in the impedance value, within a time scale of milliseconds, it adjusts the current, voltage, and pulse width of the radio frequency generator to ensure a constant energy output. At the same time, through multi-channel temperature monitoring, according to the temperature change relationship on the skin surface, the refrigerant pulse width is adjusted in real time to control the constant flow output, so as to maintain the temperature rise relationship in the default model through the adjustable pulse width. During the above process, if the output power of the radio frequency generator changes, in the energy control of the next stage, the radio frequency generator makes a default adjustment setting of constant power.

[0049] In the above step S2, the stability model combines the static state of the default model and the dynamic changes of the adjustment model. Among them, the proportional relationship is: stability model = A × adjustment model + B × default model, where A and B are factors that change with time, and the values of A and B are proportional to the adjustment time. Initially, under the preset normal state: A = B = 0.5. And, in the above stability model calculation: if the refrigerant and radio frequency energy are much less than expected, then A decreases and B increases; if the refrigerant and radio frequency energy are much greater than expected, then A increases and B decreases. The expected values of the refrigerant and radio frequency energy are: the radio frequency energy corresponds to 20J to 170J for all 16 levels from level 0.5 to level 8, and the refrigerant corresponds to 0.12ml to 0.51ml for all 16 levels of the radio frequency from level 0.5 to level 8. However, in the actual radio frequency energy output, with the closed-loop adjustment of the impedance, there are slight adjustments in parameters such as voltage, current, and pulse width. In this case, the refrigerant needs to follow the slight adjustment. The refrigerant adjusts its own change rate according to the change rate of the radio frequency energy within 1.2s, and determines a rapid change factor (i.e., A and B) based on the change rate of the radio frequency energy and the change rate of the refrigerant over time. A and B are initially 0.5. Subsequently, according to the changes in the adjustment model, A and B will have instantaneous oscillating changes, but will eventually return to the state of slight adjustment at 0.5 without significant fluctuations until the single-shot energy continuous output is completed.

[0050] In this embodiment, in the radio frequency energy control of the radio frequency treatment device, in the pre-output state: the default low-power value is output, and the radio frequency energy is output at a low power of less than 0.5W for 100ms.

[0051] In the radio frequency energy control of the radio frequency treatment device, during the working stage, a constant radio frequency power is output to the target tissue. At the same time, the radio frequency power parameters and the loop impedance value are monitored and adjusted, but the radio frequency energy magnitude is not adjusted, and it does not participate in the adjustment of the refrigerant control to ensure power stability.

[0052] In this embodiment, in the refrigerant control of the radio frequency treatment device, in the pre-output state: the refrigerant is output with a small flow pulse width of 4ms and a temperature control of 18 degrees to avoid frostbite and crystallization, which helps to weaken the somatic pain feeling while ensuring the treatment effect.

[0053] In the refrigerant control of the radiofrequency treatment device, during the working stage, when the radiofrequency energy is output according to the energy of the preset gear, the output of the refrigerant is allocated according to the parameters of the adjustment model; and, the radiofrequency treatment device monitors the stability of the output flow rate, the continuous pulse width, the pressure magnitude, and the multi-channel temperature monitoring to realize the regulation work of the adjustment model; wherein, the refrigerant adjustment does not participate in the adjustment of the radiofrequency energy magnitude, and is used to ensure the temperature model of the skin contact layer, and the stability of the radiofrequency ensures the heating model of the subcutaneous tissue.

[0054] In addition, in the refrigerant control of the radiofrequency treatment device, during the working stage, during the 1.2s radiofrequency output process, if the pressure is insufficient or the stability is insufficient, the radiofrequency treatment device maintains the pressure at 6 bar constantly through the liquid pump, and judges the stability again through the flow sensor, and then quickly controls the refrigerant pulse width, and regulates the temperature rise situation within the total duration according to the skin surface temperature in the established model.

[0055] A radiofrequency treatment device for cooperating with the method for controlling the tissue temperature field by the above radiofrequency power, which includes: a main body, a handle 1 and a treatment head 2; an electrode sheet for realizing impedance monitoring is arranged on the target tissue; a temperature sensor for realizing temperature acquisition is also arranged on the treatment head 2.

[0056] The experimental data are as follows:

[0057] When the single-shot energy is output, the temperature field change diagrams of different layers of subcutaneous tissues of live pigs at 4 cm are as follows: 2 As shown in the following table:

[0058]

[0059] The temperature rise data results of the above tests show that in the same gear, the single-shot temperature rise of the fat layer is the highest, followed by the skin layer, and the lowest in the muscle layer: that is, the thermal effect generated by the high-frequency alternating current can heat each layer of subcutaneous tissue during the treatment process, and its action effect can cover the skin layer, fat layer, and muscle layer according to the predetermined model; and the temperature of the skin surface layer is also lower than that of the fat layer, indicating that the refrigerant function plays a refrigeration function during the treatment process, ensuring the safety and body feeling of the skin surface layer, and the temperature rise of the skin layer is also controlled, that is, the refrigerant function can control the severity of various adverse reactions occurring in the skin layer. Similarly, comparing the single-shot temperature rise of each subcutaneous layer between different gears, the test group instrument is the same as the control group instrument, and as the gear increases, the single-shot temperature rise of each subcutaneous layer tissue increases: the temperature measurement results of the test show that the single-shot temperature rise value of each subcutaneous layer can be adjusted by the gear to change the heating intensity of the radiofrequency treatment on each subcutaneous layer tissue, and the operator can also control and ensure the safety during the operation through the gear adjustment function, and can ensure the expected treatment effect of the operation.

[0060] Obviously, the above embodiments are merely examples for clear illustration and not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. The obvious changes or modifications derived therefrom still fall within the protection scope of the present invention.

Claims

1. A radiofrequency treatment device, characterized in that, Including: A main body, a handle (1) and a treatment head (2); Electrode patches for impedance monitoring are provided on the target tissue; A temperature sensor for temperature acquisition is further provided on the treatment head (2); A method for controlling the tissue temperature field by radio frequency power, including: Step S1, when the radio frequency treatment device has a pre-output state, the pre-output state is: controlling the radio frequency energy and the refrigerant to be output at default values; wherein, the radio frequency energy is pre-output at a low power value, and the refrigerant is pre-output at a small flow rate value; in the pre-output state, the low power value of the radio frequency energy is: less than 0.5W, 100ms pulse width; and, in the pre-output state, the small flow rate value of the refrigerant is: 0.04ml, 4ms pulse width; Step S2, when the radio frequency treatment device also has a model control state, the model control state is: controlling the radio frequency energy and the refrigerant through a default model, an adjustment model and a stability model; wherein, the default model is a preset temperature model, the radio frequency energy is output according to a preset gear, and the output of the refrigerant is temperature-controlled at a flow rate corresponding to the gear; wherein, the adjustment model detects through a detection mechanism: the target tissue temperature, the impedance value and the radio frequency output parameters, and adjusts the radio frequency energy parameters on the basis of the default model according to the detection data; wherein, the stability model combines the static state of the default model and the dynamic changes of the adjustment model, so as to judge whether the adjustment model is stable; and, the stability model judges whether the energy output of the radio frequency generator is uniform through a temperature detection mechanism, so as to adjust the response time of the default model and the adjustment model in real time to prevent the overshoot effect of the radio frequency energy and the refrigerant.

2. The radiofrequency treatment device according to claim 1, wherein, In the pre-output state, temperature control is implemented on the radio frequency treatment device to make the target tissue temperature be 18 degrees, so as to avoid frostbite and crystallization, and weaken the somatic pain while ensuring the treatment effect.

3. The radiofrequency treatment device according to claim 1, characterized in that, In step S2, the default model is a preset temperature model, the radio frequency energy is output according to a preset gear, and the output of the refrigerant is temperature-controlled at 18 degrees at a flow rate corresponding to the gear.

4. The radiofrequency treatment device according to claim 3, characterized in that, The default model is a temperature model summarized from multiple repeated experiments; the radio frequency treatment device has 16 gears; and, the default model adjusts the refrigerant amount in the following range through multiple gears: 0.04ml, 4ms pulse width, to 0.17ml, 17ms pulse width; The corresponding rising temperature of the fat layer is: 0.5°C to 7.5°C, and at the same time, the range for controlling the skin layer temperature to be less than the fat layer temperature is: 0.5°C to 1.5°C.

5. The radiofrequency treatment device according to claim 1, characterized in that In step S2, if the adjustment model detects that the impedance value changes, within a time of millisecond level, it adjusts the current, voltage and pulse width of the radio frequency generator to ensure a constant energy output; at the same time, through multi-channel temperature monitoring, according to the temperature change relationship on the skin surface, it adjusts the refrigerant pulse width in real time to control the constant flow output, so as to maintain the temperature rise relationship in the default model through an adjustable pulse width; If the output power of the radio frequency generator changes, in the energy control of the next stage, the radio frequency generator makes a default adjustment setting with constant power.

6. The radiofrequency treatment device according to claim 1, wherein In step S2, the stability model combines the static state of the default model and the dynamic changes of the adjustment model; wherein, the proportional relationship is: stability model = A × adjustment model + B × default model, and A and B are factors that change at different speeds over time, and the values of A and B are proportional to the adjustment time.

7. The radiofrequency treatment device according to claim 6, characterized in that, In the initial preset state: A = B = 0.5, that is, stability model (parameter quantity) = 0.5 × adjustment model (parameter quantity) + 0.5 × default model (parameter quantity); In the calculation of the stability model: if the refrigerant and radio frequency energy are much less than expected, then A decreases and B increases; if the refrigerant and radio frequency energy are much greater than expected, then A increases and B decreases.

8. The radio frequency treatment device according to any one of claims 1 to 7, characterized in that In the radio frequency energy control of the radio frequency treatment device, in the pre-output state: the default low power value is output, and the radio frequency energy is output at a low power of less than 0.5W for 100ms; In the radio frequency energy control of the radio frequency treatment device, in the working stage, a constant radio frequency power is output to the target tissue; at the same time, the radio frequency power parameters and loop impedance values are monitored and adjusted, but the size of the radio frequency energy is not adjusted, and the adjustment of the refrigerant control is not participated in to ensure power stability.

9. The radio frequency treatment device according to any one of claims 1 to 7, characterized in that In the refrigerant control of the radio frequency treatment device, in the pre-output state: the refrigerant is output with a small flow pulse width of 4ms and a temperature control of 18 degrees to avoid frostbite and crystallization, weakening the body sensation pain while ensuring the treatment effect; In the refrigerant control of the radio frequency treatment device, in the working stage, when the radio frequency energy is output according to the energy of the preset gear, the output of the refrigerant is allocated according to the parameters of the adjustment model; and the radio frequency treatment device monitors the stability of the output flow, the continuous pulse width, the pressure size and the multi-channel temperature monitoring to realize the regulation work of the adjustment model; Among them, the refrigerant adjustment does not participate in the adjustment of the size of the radio frequency energy, and is used to ensure the temperature model of the skin contact layer, and the stability of the radio frequency ensures the heating model of the subcutaneous tissue.

10. The radiofrequency treatment device according to claim 9, characterized in that, In the refrigerant control of the radio frequency treatment device, in the working stage, during the 1.2s radio frequency output process, if the pressure is insufficient or the stability is insufficient, the radio frequency treatment device maintains the pressure at 6bar constantly through the liquid pump, and judges the stability again through the flow sensor, and then quickly controls the refrigerant pulse width, and monitors and adjusts the temperature rise situation within the total duration according to the skin surface temperature regulation in the established model.

Images