Disclosure of Invention
In view of the above, the present invention provides a control method, a control device and a radio frequency treatment system, so as to solve the problem that the adhesion state between the planar electrode at the head end of the radio frequency treatment system and the skin of the treatment object cannot be accurately monitored.
In a first aspect, the present invention provides a control method applied to a radio frequency treatment system, the radio frequency treatment system including a radio frequency treatment head, the radio frequency treatment head including a planar radio frequency electrode and a plurality of temperature sensors, the temperature sensors being disposed around the planar radio frequency electrode, the method comprising:
acquiring a first temperature and a second temperature acquired by each temperature sensor, wherein the first temperature and the second temperature are acquired before and after preset radio frequency pulses respectively;
respectively acquiring corresponding first temperature differences for the temperature sensors, wherein the first temperature differences are first differences between the second temperature and the first temperature;
Determining a fitting state between the planar radio frequency electrode and a current treatment object based on the first temperature difference corresponding to each temperature sensor, wherein the fitting state at least comprises a complete fitting state and an incomplete fitting state;
And under the condition that the attaching state is determined to be the complete attaching state, controlling to output the follow-up formal radio frequency pulse.
In an alternative embodiment, the preset radio frequency pulse is a radio frequency pulse and/or a formal radio frequency pulse for detecting the fitting state.
In an optional embodiment, the determining, based on the first temperature differences corresponding to the temperature sensors, a fitting state between the planar rf electrode and the current treatment object includes:
acquiring a maximum first temperature difference and a minimum first temperature difference in the first temperature differences;
acquiring a second difference between the maximum first temperature difference and the minimum first temperature difference;
if the second difference value is larger than a first preset threshold value, determining that the fit state is the incomplete fit state;
And if the second difference value is smaller than or equal to the first preset threshold value, determining that the fit state is the complete fit state.
In an alternative embodiment, the control method further comprises:
Acquiring a third temperature and a fourth temperature acquired by each temperature sensor, wherein the third temperature and the fourth temperature are temperatures acquired before and after a preset cold spray pulse respectively;
Respectively acquiring corresponding second temperature differences for the temperature sensors, wherein the second temperature differences are third difference values between the fourth temperature and the third temperature;
determining a cold spray function state of the radio frequency treatment system based on the second temperature difference corresponding to each temperature sensor, wherein the cold spray function state comprises a normal state and an abnormal state;
And under the condition that the cold spraying function state is normal and the bonding state is the complete bonding state, controlling and outputting subsequent formal cold spraying pulse and formal radio frequency pulse.
In an alternative embodiment, the preset cold spray pulse is a cold spray pulse and/or a formal cold spray pulse for detecting the cold spray functional state.
In an alternative embodiment, the determining the cold spray function status of the rf treatment system based on the second temperature differences corresponding to the temperature sensors includes:
If the second temperature differences are smaller than a second preset threshold value, determining that the cold spraying functional state is a normal state;
And if the second temperature difference corresponding to one or more temperature sensors is greater than or equal to the second preset threshold value, determining that the cold spraying functional state is an abnormal state.
In an alternative embodiment, the control timing and timing of the temperature acquisition of the cold spray pulses and the radio frequency pulses are:
After the third temperature acquired by each temperature sensor is acquired, controlling and outputting the preset cold spray pulse;
acquiring the fourth temperature acquired by each temperature sensor after the preset cold spray pulse is output;
after the cold spraying function state is determined to be normal based on the third temperature and the fourth temperature, acquiring the first temperature acquired by each temperature sensor, and controlling to output the preset radio frequency pulse;
acquiring the second temperature acquired by each temperature sensor after the preset radio frequency pulse is output;
After determining that the bonding state is a full bonding state based on the first temperature and the second temperature, controlling to output subsequent formal cold spray pulses and formal radio frequency pulses.
In a second aspect, the present invention provides a control device for use in a radio frequency therapy system, the radio frequency therapy system including a radio frequency therapy head including a planar radio frequency electrode and a plurality of temperature sensors disposed about the planar radio frequency electrode, the device comprising:
The system comprises a first temperature acquisition module, a second temperature acquisition module and a control module, wherein the first temperature acquisition module is used for acquiring a first temperature and a second temperature acquired by each temperature sensor;
The first temperature difference acquisition module is used for respectively acquiring corresponding first temperature differences for the temperature sensors, wherein the first temperature differences are first difference values between the second temperature and the first temperature;
the fitting state determining module is used for determining fitting states between the planar radio-frequency electrode and the current treatment object based on the first temperature difference corresponding to each temperature sensor, and the fitting states at least comprise a complete fitting state and an incomplete fitting state;
And the control module is used for controlling and outputting the follow-up formal radio frequency pulse under the condition that the bonding state is determined to be the complete bonding state.
In a third aspect, the present invention provides a radio frequency treatment system, comprising at least a host computer, a radio frequency treatment head end;
The radio frequency treatment head end comprises a planar radio frequency electrode and a plurality of temperature sensors, and the temperature sensors are arranged around the planar radio frequency electrode;
the host at least comprises a main control circuit board, and the main control circuit board is used for executing the control method of the first aspect or any corresponding implementation mode thereof.
In an alternative embodiment, the shape of the planar radio frequency electrode is square, rectangle, polygon with the number of sides being more than four, circle, ellipse;
the temperature sensors are uniformly distributed around the planar radio frequency electrode.
In a fourth aspect, the present invention provides a computer-readable storage medium having stored thereon computer instructions for causing a computer to execute the control method of the first aspect or any of its corresponding embodiments.
In a fifth aspect, the present invention provides a computer program product comprising computer instructions for causing a computer to perform the control method of the first aspect or any of its corresponding embodiments.
According to the control method, the control device and the radio frequency treatment system provided by the embodiment of the invention, a plurality of temperature sensors are arranged on the outer edge of the electrode by utilizing the effect that the fringe electric field of the suspended area is obviously enhanced when the single-stage radio frequency planar electrode is in poor fit, the temperature sensors are used for capturing the fringe electric field intensity of the feedback electrode, and whether the fit is good or not is indicated by the intensity of the fringe electric field. That is, the temperature value measured by the temperature sensor is used for representing the edge electric field energy of the planar radio frequency electrode in the radio frequency treatment process, so that the joint condition of the radio frequency treatment head end and the treatment part is fed back. And stopping the radio frequency output in time when the good fit is not achieved. Therefore, the embodiment of the invention can ensure that the radio frequency plane electrode is well attached to the skin of the treatment part in the radio frequency treatment process. Avoiding various problems caused by the fact that the electrode is not tightly contacted with the skin.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the related art, the dynamic pressure sensor can be used for identifying the fitting degree between the planar electrode of the radiofrequency treatment head end and the skin, and particularly, the flexible pressure sensor array is integrated on the back surface of the planar electrode, so that the area with uneven pressure is monitored and prompted in real time, the actual engineering is extremely difficult and complex to realize, and the cost is extremely high. In addition, the degree of adhesion between the planar electrode of the radiofrequency treatment head end and the skin can be monitored through multi-frequency impedance, specifically, the impedance spectrum of the electrode-skin interface is analyzed by utilizing a 10kHz-10MHz sweep frequency signal, and the impedance mutation caused by bubbles or warping is identified. However, this method can greatly reduce the efficiency of rf output and significantly extend the time required for treatment. That is, two methods of monitoring the degree of adhesion between the planar electrode of the rf treatment tip and the skin in the related art have limitations of different degrees.
In this embodiment, a control method is provided, which is applied to a radio frequency treatment system, where the radio frequency treatment system includes a radio frequency treatment head, the radio frequency treatment head includes a planar radio frequency electrode and a plurality of temperature sensors, the temperature sensors are disposed around the planar radio frequency electrode, and fig. 1 is a flowchart of the control method according to an embodiment of the present invention, as shown in fig. 1, and the flowchart includes the following steps:
step S101, acquiring a first temperature and a second temperature acquired by each temperature sensor, wherein the first temperature and the second temperature are acquired before and after preset radio frequency pulse respectively.
Specifically, the temperature sensor may be various temperature sensors including a thermistor temperature sensor. The matrix T2 of the first temperature acquired by each temperature sensor is:
T2＝(TR1t2 TR2t2 … TRnt2)
The matrix T3 of the second temperature acquired by each temperature sensor is:
T3＝(TR1t3 TR2t3 … TRnt)
wherein, R1, R2,..and Rn are the serial numbers of n temperature sensors.
Step S102, respectively acquiring corresponding first temperature differences for the temperature sensors, wherein the first temperature differences are first differences between the second temperature and the first temperature.
That is, a T3-T2 matrix is calculated:
T3-T2＝(TR1t3-TR1t2 TR2t3-TR2t2 … TRnt3-TRnt2)
Step S103, determining a fitting state between the planar radio frequency electrode and the current therapeutic object based on the first temperature difference corresponding to each temperature sensor, where the fitting state at least includes a complete fitting state and an incomplete fitting state.
In some optional embodiments, the determining, based on the first temperature differences corresponding to the temperature sensors, a fitting state between the planar rf electrode and the current therapeutic object includes:
acquiring a maximum first temperature difference and a minimum first temperature difference in the first temperature differences;
acquiring a second difference between the maximum first temperature difference and the minimum first temperature difference;
if the second difference value is larger than a first preset threshold value, determining that the fit state is the incomplete fit state;
And if the second difference value is smaller than or equal to the first preset threshold value, determining that the fit state is the complete fit state.
That is, the difference between the maximum value and the minimum value in the contrast difference matrix T3-T2. If the difference is smaller, the radio frequency output of the radio frequency treatment head end is normal, and the radio frequency treatment head end and the skin surface are in a good fit state. I.e., if max (T3-T2)-min(T3-T2)<T Threshold of pre-injection, it indicates that the rf output of the rf treatment tip is normal and the rf treatment tip is in good engagement with the skin surface, if the difference is large, it indicates that the rf treatment tip is not fully engaged, the system terminates subsequent energy outputs, if the difference value is larger, it indicates that the radio frequency treatment system is abnormal, and the operator is required to check the state of the treatment head end or the equipment and further process.
Step S104, when the bonding state is determined to be the complete bonding state, the follow-up formal radio frequency pulse is controlled to be output.
In the specific description, the four sides are not limited to four orthogonal directions, but may be any directions, and the four sides do not limit the projection relationship between the temperature sensor and the planar rf electrode, that is, the projection of the temperature sensor onto the planar rf electrode, and may be inside or outside the planar rf electrode. In addition, in the case that the projection of the temperature sensor to the planar radio frequency electrode is in the planar radio frequency electrode, the temperature sensor can have one edge closely attached to or overlapped with the edge of the planar radio frequency electrode, or can have no edge closely attached to or overlapped with the edge of the planar radio frequency electrode, and the same is true in the case that the projection of the temperature sensor to the planar radio frequency electrode is out of the planar radio frequency electrode. In the case that the temperature sensor does not have any edge in close contact with or coincident with the edge of the planar rf electrode, the temperature sensor should also be as close to the edge of the planar rf electrode as possible. In addition, the temperature sensor needs to be arranged around the planar radio frequency electrode in the form of direct current insulation.
In some specific embodiments, the preset radio frequency pulse may be a radio frequency pulse and/or a formal radio frequency pulse for detecting the fitting state. Specifically, as shown in fig. 2, a radio frequency pulse for detecting the fit state (i.e., the radio frequency pre-output pulse in fig. 2) may be output before the main radio frequency pulse (i.e., the main output radio frequency pulse in fig. 2). The power and amplitude of the RF pre-output pulse are the same as the follow-up formally output RF pulse, but the output duration is very short. When the RF pre-output pulse is used for detecting that the fitting state between the planar RF electrode and the current treatment object is complete fitting, the formal RF pulse (namely, the formal output RF pulse in fig. 2) can be normally output later. The number of the regular rf pulses (i.e., the regular output rf pulses in fig. 2) may be one or more. In the case where there is only one of the regular rf pulses (i.e., the regular output rf pulse in fig. 2), it may not be necessary to determine the fit between the planar rf electrode and the current subject based on the temperature before and after (acquired by the temperature sensor) the one regular rf pulse. However, in the case where there are a plurality of regular rf pulses (i.e., regular output rf pulses in fig. 2), in order to ensure that the bonding state is a complete bonding state when each regular rf pulse is output, the bonding state between the planar rf electrode and the current treatment object may be determined based on the temperature before and after each regular rf pulse. Of course, it is not necessary to determine the fit between the planar rf electrode and the current subject based on the temperature before and after each formal rf pulse. For example, one or more regular rf pulses may be spaced apart to determine the fit condition again. Of course, in the case that there are a plurality of main rf pulses (i.e., main rf pulses in fig. 2), the main rf pulse may be directly output without outputting the rf pre-output pulse, and then the bonding state between the planar rf electrode and the current treatment object may be determined based on the temperature before and after the main rf pulse is output.
The method comprises the steps of judging the bonding state between the plane radio frequency electrode and the current treatment object by using the temperature before and after a specific (for example, special for bonding state detection) preset radio frequency pulse, and judging the bonding state between the plane radio frequency electrode and the current treatment object by using the temperature before and after a formal radio frequency pulse, wherein the judging methods of the two are the same. However, since the output time length of the preset radio frequency pulse special for detecting the attaching state is different from that of the formally output radio frequency pulse, the judgment threshold value needs to be correspondingly adjusted.
In addition, the different expected treatment positions and the different treatment positioning radio frequency treatment systems have different cold spray output effects, radio frequency output power and radio frequency treatment head end designs, so that specific judgment threshold setting is required according to a specific system.
In the case where there are a plurality of regular rf pulses (i.e., regular output rf pulses in fig. 2), the duration of the different regular rf pulses may be different (or may be the same, of course). Correspondingly, when the attaching state between the plane radio frequency electrode and the current treatment object is judged by utilizing the temperatures before and after the formal radio frequency pulse, the judging threshold value needs to be adaptively adjusted according to the different time lengths of the formal radio frequency pulse.
According to the control method provided by the embodiment, when the single-stage radio frequency planar electrode is poor in lamination, the effect that the fringe electric field of the suspended area is obviously enhanced is utilized, a plurality of temperature sensors are arranged on the outer edge of the electrode, the temperature sensors are used for capturing the fringe electric field intensity of the feedback electrode, and whether lamination is good or not is indicated through the intensity of the fringe electric field. That is, the temperature value measured by the temperature sensor is used for representing the edge electric field energy of the planar radio frequency electrode in the radio frequency treatment process, so that the joint condition of the radio frequency treatment head end and the treatment part is fed back. And stopping the radio frequency output in time when the good fit is not achieved. Therefore, the embodiment of the invention can ensure that the radio frequency plane electrode is well attached to the skin of the treatment part in the radio frequency treatment process. The problems that an air gap is formed locally when the electrode is in loose contact with the skin, so that radio frequency energy is unevenly distributed, a concentrated high-energy electric field is generated in a poor contact area due to rapid increase of impedance, flashover arc can be caused, skin burn can be caused, equipment or a head end electrode can be damaged, overheat damage of the skin can be caused in a bonding area due to excessive energy accumulation, partial radio frequency power is reflected back to the equipment due to impedance mismatch caused by incomplete bonding, the treatment effect of collagen remodeling is reduced, and a radio frequency circuit of a radio frequency treatment system can be damaged.
In some alternative embodiments, the control method further comprises:
and step S01, acquiring a third temperature and a fourth temperature acquired by each temperature sensor, wherein the third temperature and the fourth temperature are temperatures acquired before and after a preset cold spray pulse respectively.
The temperature matrix T0 formed by the third temperatures collected by the temperature sensors is as follows:
T0＝(TR1t0 TR2t0 … TRnt0)
The temperature matrix T1 formed by the fourth temperatures collected by the temperature sensors is as follows:
T1＝(TR1t1 TR2t1 … TRnt1)
step S02, respectively acquiring corresponding second temperature differences for the temperature sensors, wherein the second temperature differences are third differences between the fourth temperature and the third temperature.
Each temperature sensor respectively acquires a matrix formed by corresponding second temperature differences as follows:
T1-T0＝(TR1t1-TR1t0 TR2t1-TR2t0 … TRnt1-TRnt0)
step S03, determining a cold spraying functional state of the radio frequency treatment system based on the second temperature difference corresponding to each temperature sensor, wherein the cold spraying functional state comprises a normal state and an abnormal state.
Specifically, step S03, that is, determining the cold spray function status of the rf treatment system based on the second temperature differences corresponding to the temperature sensors, includes:
If the second temperature differences are smaller than a second preset threshold value, determining that the cold spraying functional state is a normal state;
And if the second temperature difference corresponding to one or more temperature sensors is greater than or equal to the second preset threshold value, determining that the cold spraying functional state is an abnormal state.
Specifically, a pre-cooling spray temperature difference effective threshold T Precooling threshold, namely a second preset threshold, is introduced, and is a negative value, if the result of subtracting the temperature value before cooling spray from the temperature value after cooling spray of a certain temperature sensor is smaller than the effective threshold, the temperature after cooling spray is reduced enough, and the cooling spray is effective. Namely:
If it isAnd if the cooling water meets the Tx<T Precooling threshold, the normal cooling function of the surface of the head end of the treatment is indicated. Otherwise, there is a fault.
That is, if the temperature values collected by the temperature sensors are all obviously reduced, the normal refrigeration function of the surface of the treatment head end is indicated, and if the temperature values collected by the temperature sensors are not obviously reduced, the abnormal fault of the refrigeration function of the surface of the treatment head end is indicated.
Step S04, under the condition that the cold spraying functional state is normal and the bonding state is the complete bonding state, controlling and outputting subsequent formal cold spraying pulse and formal radio frequency pulse.
If the cold spraying function state is abnormal, the subsequent radio frequency energy output is stopped, and corresponding prompt is carried out through the equipment interface, so that an operator is prompted to check the state of the treatment head end or equipment, and further processing is carried out.
In the related art, although whether the refrigerating cold spray link is normal can be monitored by arranging sensors in a handle of the system and a gas circuit of a host machine, whether the final spray effect of cold spray reaches the requirement is difficult to evaluate. According to the embodiment of the invention, on the basis of the radio frequency electrode lamination detection, the real-time monitoring and evaluation of the final spraying effect of the refrigeration cold spraying are realized, the cold spraying system state reflected by the cold spraying link sensor in the system can be well supplemented, and the safety and the effectiveness of the equipment are further improved.
In some specific embodiments, the preset cold spray pulse is a cold spray pulse and/or a formal cold spray pulse for detecting the cold spray functional state. Specifically, as shown in fig. 2, a cold spray pulse (i.e., a pre-cold spray pulse in fig. 2) for detecting the status of the cold spray function may be output before the main rf pulse (i.e., the main output rf pulse in fig. 2). The power and the amplitude of the pre-cooling spray pulse are the same as those of the follow-up formally output cold spray pulse, but the output duration is short. When the temperature collected by the temperature sensors before and after the pre-cooling spray pulse is used for judging that the cold spray function state is normal and the bonding state between the plane radio frequency electrode and the current treatment object is detected to be complete bonding by using the radio frequency pre-output pulse, the formal radio frequency pulse (namely the formally output radio frequency pulse in fig. 2) can be normally output in the follow-up process. The number of the regular rf pulses (i.e., the regular output rf pulses in fig. 2) may be one or more. Each formal rf pulse is accompanied by a formal refrigeration cold spray pulse.
In the case where there is only one of the main rf pulses (i.e., the main output rf pulse in fig. 2), it may not be necessary to determine the cold spray function status based on the temperatures before and after the cold spray pulse associated with the one main rf pulse. However, in the case where there are a plurality of main rf pulses (i.e., main output rf pulses in fig. 2), in order to ensure that the cold spray function status is normal when each main rf pulse is output, the cold spray function status may be determined based on the temperatures before and after the main cold spray pulse associated with each main rf pulse. Of course, it is not necessary to determine the cold spray function state based on the temperatures before and after the main cold spray pulse associated with each main rf pulse. For example, one or more formal cold spray pulses (i.e., the cold spray pulses in fig. 2) may be spaced apart to determine the cold spray functional status again. Of course, in the case where there are a plurality of main rf pulses (i.e., main output rf pulses in fig. 2), the cold spray function state may be determined directly based on the temperatures before and after the output of the cold spray pulse without outputting the pre-cold spray pulse.
The cold spray function state is judged by utilizing the temperature before and after the specific preset cold spray pulse, and the cold spray function state is judged by utilizing the temperature before and after the formal cold spray pulse, wherein the judging methods of the cold spray function state and the cold spray function state are the same. However, since the output duration of the preset cold spray pulse is different from that of the formal cold spray pulse, the judgment threshold value needs to be adjusted correspondingly. In addition, the different expected treatment positions and the different treatment positioning radio frequency treatment systems have different cold spray output effects, radio frequency output power and radio frequency treatment head end designs, so that specific judgment threshold setting is required according to a specific system.
In the case where there are a plurality of regular rf pulses (i.e., regular output rf pulses in fig. 2), the duration of the different regular rf pulses may be different. Accordingly, the duration of the cold spray pulses accompanying different official rf pulses may also be different. When judging the state of the cold spray function by using the temperature values before and after the main cold spray pulse, the judging threshold value needs to be adaptively adjusted according to the difference of the duration of the main cold spray pulse.
In some specific embodiments, as shown in fig. 2, the control timing and the timing of the temperature acquisition of the cold spray pulse and the radio frequency pulse are:
1. after the third temperatures acquired by the temperature sensors are acquired, controlling to output the preset cold spray pulse (i.e. the pre-cold spray pulse in fig. 2);
In addition, the problem that the skin temperature of the current treatment area of the current treatment object is too low due to the fact that only the preset cold spray pulse is output, and the user experience is affected is avoided. A radio frequency pulse, i.e. the radio frequency detection pulse in fig. 2, may be output before the preset cold spray pulse is output, and the skin temperature of the current treatment area is first raised by using the radio frequency pulse, and then the third temperature acquired by each temperature sensor is acquired, and the preset cold spray pulse is output. In addition, the radio frequency pulse can be used for detecting the smoothness of the radio frequency link and also can be used for detecting the impedance of the radio frequency link.
2. Acquiring the fourth temperature acquired by each temperature sensor after the preset cold spray pulse is output;
3. After the cold spraying function state is determined to be normal based on the third temperature and the fourth temperature, acquiring the first temperature acquired by each temperature sensor, and controlling to output the preset radio frequency pulse (namely, the radio frequency pre-output pulse shown in fig. 2);
4. Acquiring the second temperature acquired by each temperature sensor after the preset radio frequency pulse is output;
5. after determining that the bonding state is a full bonding state based on the first temperature and the second temperature, controlling to output the subsequent main cold spray pulse (i.e., the refrigeration cold spray pulse shown in fig. 2) and the main radio frequency pulse (i.e., the main output radio frequency pulse shown in fig. 2).
In the embodiment of the invention, the temperature measurement time points are all in the period of not carrying out radio frequency output, so that the problem that the final temperature detection result is affected due to temperature measurement numerical value errors caused by radio frequency output interference is avoided.
In some embodiments, after the rf pre-output pulse, a formal output phase is entered, which includes one or more sets of formal output rf pulses and refrigeration cold spray pulses. Each refrigeration cold spray pulse is used for checking whether the cold spray function state is judged by using the temperature value acquired by the temperature sensor. Each formally output radio frequency pulse is used for judging the attaching state of the planar electrode once by utilizing the temperature value acquired by the temperature sensor.
In summary, in the existing radio frequency treatment system, the degree of fitting between the radio frequency treatment head end and the treatment part cannot be identified generally, and good fitting is an important guarantee of safety and effectiveness of radio frequency treatment, and radio frequency output is continuously performed in an incompletely fitted state, so that system equipment is possibly damaged, even irreversible faults occur, further economic loss is caused, and scalding of a subject is possibly caused. According to the embodiment of the invention, the edge electric field characteristics of the radio frequency electrode are utilized, the temperature value is measured by using the temperature sensor, and the edge electric field energy of the plane radio frequency electrode is represented, so that the joint condition of the radio frequency treatment head end and the treatment part is fed back, the cost is extremely low, the change to the system design is very small, and engineering realization is very easy.
In this embodiment, a radio frequency treatment system is provided, as shown in fig. 3, at least including a host computer and a radio frequency treatment head end;
The rf treatment head includes a planar rf electrode (which may also be referred to as an rf energy emitting membrane) and a plurality of temperature sensors 22 disposed about the planar rf electrode. Specifically, the shape of the planar rf electrode 21 may be square as shown in fig. 4, rectangle as shown in fig. 5, polygon with sides greater than four (such as octagon as shown in fig. 6), or circle as shown in fig. 7, or triangle or ellipse. The shape of the planar rf electrode is only exemplified herein, and is not limited to the shape of the planar rf electrode, which may be set according to actual needs. The temperature sensors are uniformly distributed around the planar radio frequency electrode. The shape of the planar radio frequency electrode is different, and the number and the positions of the temperature sensors are correspondingly designed. In addition, the radiofrequency treatment head end also comprises a cold spray channel.
The radio frequency treatment head end comprises a radio frequency treatment head end shell 23 at the outermost side, a plane radio frequency electrode 21 arranged at the bottom of the radio frequency treatment head end shell 23, a thermistor serving as a temperature sensor arranged between the radio frequency treatment head end shell 23 and the plane radio frequency electrode 21 and uniformly distributed around the plane radio frequency electrode, for example, the thermistor is positioned at the inner side (the outer side contacting a human body) of the plane radio frequency electrode and the treatment head end shell and connected to a handle circuit board 32 through a temperature sensor connecting wire 35, and a cold ejection port 36 is opposite to the inner side (the outer side contacting the human body) of the plane radio frequency electrode. The planar RF electrode is used for outputting RF energy to the outside, the cold spray port 36 is a refrigerant spray port for sending out refrigerant to the planar RF electrode to cool the planar RF electrode, so as to refrigerate the treatment part outside the treatment head, and the thermistor is used for detecting the cold spray refrigeration effect and detecting whether the planar RF electrode is well attached in the treatment process.
As shown in fig. 8, the host includes at least a main control circuit board 12, and the main control circuit board 12 is configured to execute any one of the control methods described in the foregoing embodiments. The host also includes a cold spray gas source, a radio frequency circuit board 11, and a display circuit board 13.
In addition, the radiofrequency treatment system may also include a handle. The main components of the handle include a cold spray controller 31, a handle circuit board 32, and a radio frequency energy transmission cable 33. Specifically, in the handle, a cold spray channel 34 in the handle is connected with a cold spray port 36 of the radio frequency treatment head end, a cold spray controller 31 is connected in the cold spray channel 34 in the handle, the cold spray controller 31 is controlled by a handle circuit board 32 to control start and stop of the cold spray, and an instruction of the cold spray controller 31 controlled by the handle circuit board 32 is derived from the main control circuit board 12. The temperature sensor is connected to the handle circuit board 32 via a temperature sensor connection 35, and the handle circuit board 32 measures the surface tissue temperature of the treatment site via the temperature sensor. The main machine supplies power to the handle through the main control/handle connecting wire 14 and performs communication control with the handle, transmits the cooling medium to the handle and the radio frequency treatment head end through the cooling medium outlet channel, and transmits the radio frequency energy to the treatment part through the radio frequency energy transmission cable 33 (shown in fig. 9) and the radio frequency return cable 42 (shown in fig. 10), wherein the radio frequency energy transmission cable 33 is connected to the radio frequency treatment head end through the handle and intensively emits the radio frequency energy through the radio frequency energy emitting film (namely, a planar radio frequency electrode), the radio frequency return cable 42 is connected with a return patch, and the radio frequency return patch 41 is adhered to a non-treatment area (namely, a adhered return patch part 43 of the person to be treated) on the person to be treated. That is, the rf circuit patch 41 is adhered to the skin surface of the patient, and the area of the rf circuit patch 41 is much larger than the area of the rf energy-emitting film, so that the impedance of the rf circuit patch 41 is in a very low state. The rf circuit board 11, the rf energy transmission cable 33, the rf energy emitting film, the treated part 44 of the treated person, the body of the treated person (i.e. the treated subject), the stuck-on circuit part 43 of the treated person, the rf circuit patch 41, and the rf circuit cable 42 constitute a single-stage rf circuit of the rf treatment system. The subject-adhering circuit patch part 43 and the subject-treating part 44 are different parts on the subject, the subject-treating part 44 is a part contacted by the head end of the radio-frequency treatment, such as a cheek part, and the subject-adhering circuit patch part 43 is generally an abdomen or a lumbar back part.
The temperature sensor is arranged around the plane (radio frequency) electrode in a direct-current insulation mode, the temperature change caused by the refrigeration effect of cold spraying can be detected through the temperature sensor during refrigeration spraying, the refrigeration spraying effect can be checked, and the lamination condition of the radio frequency electrode and a treatment part can be detected through the mode of the difference value of the temperature difference between the temperature sensors before and after the radio frequency output based on the eddy current loss phenomenon of the temperature sensor in the electric field of the plane (radio frequency) electrode when the radio frequency is output.
The radio frequency treatment system provided by the embodiment of the invention can be used for performing various functions such as facial anti-wrinkle treatment.
The operation of the rf treatment system is illustrated below.
When the radio frequency treatment system is used, an operator smears radio frequency coupling liquid on a treatment position of a person to be treated, then holds a handle provided with a radio frequency treatment head end by the operator, and attaches the radio frequency treatment head end to the treatment position, and after the attachment is completed, the operator operates equipment to start output, and the equipment automatically performs radio frequency energy output and cold spray output according to preset energy intensity (gear).
In the embodiment, the radiofrequency treatment head end is provided with 4 thermistors uniformly distributed around the planar radiofrequency electrode, the application part of the radiofrequency treatment head end is a face, the energy intensity is 0.5, 1.0, 1.5 and the like, the highest gear is 8.0, and the gear preset by an operator is 4.0. 4.0 grade, the effective threshold value of the corresponding pre-cooling spray temperature difference is-2.0 ℃, the effective threshold value of the refrigerating cold spray temperature difference is-10.0 ℃, and the temperature of the thermistor after cold spray minus the temperature of the thermistor before cold spray is larger than the effective threshold value (the refrigerating effect is not as good as expected), if the temperature is abnormal, otherwise, the output of the cold spray is normal. The difference value of the maximum and minimum values of the radio frequency pre-output pulse temperature difference corresponding to the gear is 2.0 ℃, the difference value of the maximum and minimum values of the corresponding formal output radio frequency pulse temperature difference is 6.0 ℃, the difference value of the temperature after radio frequency output and the temperature before radio frequency output of each thermistor is taken, the maximum temperature difference value minus the minimum temperature difference value in each thermistor is taken, if the value is smaller than the normal threshold, the radio frequency treatment head end is judged to be well attached to the treatment part, the radio frequency output is normal, and otherwise, the radio frequency treatment head end is judged to be abnormal.
Firstly, the radio frequency circuit of the device outputs a radio frequency detection pulse which can be used for detecting the smoothness of a radio frequency link and also can be used for detecting the impedance of the radio frequency link. Next, the current temperature matrix T0 measured by each thermistor in real time is recorded.
T0=(31.5°C 30.2°C 31.1°C 31.6°C)
Then, the handle circuit board controls the cold spray controller to spray the refrigerant for a short time, namely pre-cooling spray pulse, and after the spray is finished, the current temperature matrix T1 measured by each thermistor in real time is recorded.
T1=(25.7°C 26.2°C 26.1°C 24.4°C)
And calculating T1-T0, namely comparing the measured temperature values of the thermistors before and after pre-cooling spraying.
T1-T0=(-5.8°C -4.0°C -5.0°C -7.2°C)
Each element in T1-T0 is smaller than the effective threshold value of pre-cooling spray at-2.0 ℃, which indicates that the surface refrigeration function of the treatment head end is normal, if the thermistor value is not obviously reduced, which indicates that the surface refrigeration function of the treatment head end is faulty, at the moment, the system terminates the subsequent energy output and carries out corresponding prompt (prompts an operator to check the state of the treatment head end or equipment and carries out further processing) through the equipment interface.
Next, the current temperature matrix T2 measured by each thermistor in real time is recorded.
T2=(26.2°C 27.1°C 26.8°C 25.9°C)
Then, a radio frequency pre-output pulse is output, the power and amplitude of the radio frequency pre-output pulse are the same as those of the follow-up formal output radio frequency pulse, but the output time is very short, namely the pre-output pulse, and after the output is finished, the current temperature matrix T3 measured by each thermistor in real time is recorded.
T3=(26.5°C 27.8°C 27.3°C 26.4°C)
The T3-T2 matrix is calculated.
T3-T2=(0.3°C 0.7°C 0.6°C 0.5°C)
And compares the differences between the maximum and minimum values of the individual elements of the difference matrix.
max(T3-T2)=0.7°C
min(T3-T2)=0.3°C
max(T3-T2)-min(T3-T2)=0.4°C
If the difference value is larger, the treatment head is indicated to have incomplete fitting, the system stops subsequent energy output, and corresponding prompt is carried out through an equipment interface, namely, an operator is prompted to normally carry out fitting treatment, if the repeated difference value is larger, the radio frequency treatment system is indicated to be abnormal, and the operator is required to check the state of the treatment head or equipment and carry out further treatment.
After the RF pre-output pulse, the stage of formal output is entered, which includes one or more groups of formal output RF pulse and refrigeration cold spray pulse. Each refrigeration cold spray pulse performs a cold spray effect check using the thermistor temperature value. Each formally output radio frequency pulse is used for judging the fitting degree by utilizing the temperature value of the thermistor once.
The judging and processing methods of the two are respectively the same as the pre-cooling spray pulse and the radio frequency pre-output pulse, but the judging threshold values are respectively-10.0 ℃ and 6.0 ℃ because the spraying time length of the refrigeration cold spray pulse is longer than that of the pre-cooling spray pulse and the output time length of the radio frequency pre-output pulse is different from that of the formally output radio frequency pulse.
The circuit structure design provided with the thermistor around the planar electrode in the direct current insulation mode can detect temperature change caused by the refrigeration effect of cold spraying during refrigeration spraying, check the refrigeration spraying effect, and detect the lamination condition of the radio frequency electrode and a treatment part in a mode of difference of temperature difference before and after radio frequency output between the resistors based on eddy current loss phenomenon of the thermistor in the fringe electric field of the planar electrode during radio frequency output.
In this embodiment, a control device is further provided, and the control device is used to implement the foregoing method embodiment and the preferred implementation manner, and is not described in detail. As used below, the term "module" may be a combination of software and/or hardware that implements a predetermined function. While the means described in the following embodiments are preferably implemented in software, implementation in hardware, or a combination of software and hardware, is also possible and contemplated.
The embodiment provides a control device, which is applied to a radio frequency treatment system, the radio frequency treatment system includes a radio frequency treatment head end, the radio frequency treatment head end includes a planar radio frequency electrode and a plurality of temperature sensors, the temperature sensors are disposed around the planar radio frequency electrode, as shown in fig. 11, the device includes:
A first temperature obtaining module 1101, configured to obtain a first temperature and a second temperature collected by each of the temperature sensors, where the first temperature and the second temperature are temperatures obtained by collecting before and after a preset radio frequency pulse, respectively;
a first temperature difference obtaining module 1102, configured to obtain, for each of the temperature sensors, a corresponding first temperature difference, where the first temperature difference is a first difference between the second temperature and the first temperature;
A fitting state determining module 1103, configured to determine a fitting state between the planar rf electrode and a current treatment object based on the first temperature differences corresponding to the temperature sensors, where the fitting state includes at least a complete fitting state and an incomplete fitting state;
And the control module 1104 is used for controlling the output of the follow-up formal radio frequency pulse under the condition that the fitting state is determined to be the complete fitting state.
In some alternative embodiments, the preset radio frequency pulse is a radio frequency pulse and/or a regular radio frequency pulse for detecting the fitting state.
In some optional embodiments, the fit state determining module 1103 is specifically configured to obtain a maximum first temperature difference and a minimum first temperature difference in the first temperature differences, obtain a second difference between the maximum first temperature difference and the minimum first temperature difference, determine that the fit state is the incomplete fit state if the second difference is greater than a first preset threshold, and determine that the fit state is the complete fit state if the second difference is less than or equal to the first preset threshold.
In some alternative embodiments, the control device further comprises:
the second temperature acquisition module is used for acquiring a third temperature and a fourth temperature acquired by each temperature sensor, wherein the third temperature and the fourth temperature are temperatures acquired before and after a preset cold spray pulse respectively;
the second temperature difference acquisition module is used for respectively acquiring corresponding second temperature differences for the temperature sensors, wherein the second temperature differences are third difference values between the fourth temperature and the third temperature;
The cold spraying function judging module is used for determining the cold spraying function state of the radio frequency treatment system based on the second temperature difference corresponding to each temperature sensor, wherein the cold spraying function state comprises a normal state and an abnormal state;
The control module is used for controlling and outputting subsequent formal cold spraying pulse and formal radio frequency pulse under the condition that the cold spraying functional state is normal and the bonding state is the complete bonding state.
In some alternative embodiments, the preset cold spray pulse is a cold spray pulse and/or a formal cold spray pulse for detecting the cold spray functional state.
In some optional embodiments, the cold spray function judging module is specifically configured to determine that the cold spray function state is a normal state if the second temperature differences are smaller than a second preset threshold, and determine that the cold spray function state is an abnormal state if one or more second temperature differences corresponding to the temperature sensors are greater than or equal to the second preset threshold.
In some alternative embodiments, the control timing and timing of the temperature acquisition of the cold spray pulses and the radio frequency pulses are:
After the third temperature acquired by each temperature sensor is acquired, controlling and outputting the preset cold spray pulse;
acquiring the fourth temperature acquired by each temperature sensor after the preset cold spray pulse is output;
after the cold spraying function state is determined to be normal based on the third temperature and the fourth temperature, acquiring the first temperature acquired by each temperature sensor, and controlling to output the preset radio frequency pulse;
acquiring the second temperature acquired by each temperature sensor after the preset radio frequency pulse is output;
After determining that the bonding state is a full bonding state based on the first temperature and the second temperature, controlling to output subsequent formal cold spray pulses and formal radio frequency pulses.
Further functional descriptions of the above respective modules are the same as those of the above corresponding embodiments, and are not repeated here.
The control means in this embodiment are presented in the form of functional units, here referred to as ASIC (Application SpecificIntegrated Circuit ) circuits, processors and memories executing one or more software or fixed programs, and/or other devices that can provide the above described functions.
The embodiments of the present invention also provide a computer readable storage medium, and the method according to the embodiments of the present invention described above may be implemented in hardware, firmware, or as a computer code which may be recorded on a storage medium, or as original stored in a remote storage medium or a non-transitory machine readable storage medium downloaded through a network and to be stored in a local storage medium, so that the method described herein may be stored on such software process on a storage medium using a general purpose computer, a special purpose processor, or programmable or special purpose hardware. The storage medium may be a magnetic disk, an optical disk, a read-only memory, a random-access memory, a flash memory, a hard disk, a solid state disk, or the like, and further, the storage medium may further include a combination of the above types of memories. It will be appreciated that a computer, processor, microprocessor controller or programmable hardware includes a storage element that can store or receive software or computer code that, when accessed and executed by the computer, processor or hardware, implements the methods illustrated by the above embodiments.
Portions of the present invention may be implemented as a computer program product, such as computer program instructions, which when executed by a computer, may invoke or provide methods and/or aspects in accordance with the present invention by way of operation of the computer. Those skilled in the art will appreciate that the existence of computer program instructions in a computer-readable medium includes, but is not limited to, source files, executable files, installation package files, and the like, and accordingly, the manner in which computer program instructions are executed by a computer includes, but is not limited to, the computer directly executing the instructions, or the computer compiling the instructions and then executing the corresponding compiled programs, or the computer reading and executing the instructions, or the computer reading and installing the instructions and then executing the corresponding installed programs. Herein, a computer-readable medium may be any available computer-readable storage medium or communication medium that can be accessed by a computer.
Although embodiments of the present invention have been described in connection with the accompanying drawings, various modifications and variations may be made by those skilled in the art without departing from the spirit and scope of the invention, and such modifications and variations fall within the scope of the invention as defined by the appended claims.