Power control method, device and equipment of electrosurgical generator and storage medium

Abstract

The invention relates to an electrosurgical generator power control method, device and equipment and a storage medium, and is applied to the field of electrosurgical generator equipment, and the method comprises the steps: obtaining real-time sampling voltage data and real-time sampling current data, and calculating a real-time impedance value and real-time power according to the real-time sampling voltage data and the real-time sampling current data; calculating reference power according to the real-time impedance value and a preset corresponding relation between impedance and power; and adjusting the output value of the real-time power according to the reference power by adopting a phase-shifted full-bridge method, so that the output value of the real-time power is equal to the value of the reference power. The method has the technical effects that power is applied according to the protein heating denaturation process, so that high-temperature carbonization of tissues and increase of heat damage are avoided.

Description

Technical Field

[0001] The present application relates to the technical field of electrosurgical generator equipment, and in particular to a method, device, equipment and storage medium for controlling power of an electrosurgical generator. Background Art

[0002] An electrosurgical generator, also known as a high-frequency electric knife, is an instrument that generates high-frequency current to perform surgical operations. Its core function is to use high-frequency current to heat tissues, thereby separating and coagulating tissues, and achieving the purpose of cutting and hemostasis. When an electrosurgical generator (high-frequency electric knife) applies high-frequency current to tissues during operation, as the moisture in the tissue evaporates, the protein heats up and denatures, and the impedance changes at any time. Therefore, power control is required to adjust the power output in a timely manner to avoid high-temperature carbonization of the tissue and increase thermal damage.

[0003] There are some methods for controlling the power of electrosurgical generators. However, the existing power control methods do not output power according to the process of protein denaturation, which may result in poor vascular coagulation effect. Summary of the invention

[0004] In order to help solve the problem that existing power control methods do not output power according to the protein denaturation process, which may result in poor vascular coagulation effect, the present application provides an electrosurgical generator power control method, device, equipment and storage medium.

[0005] In a first aspect, the present application provides a method for controlling power of an electrosurgical generator, which adopts the following technical solution: the method is applied to an electrosurgical generator power control system, and the method comprises:

[0006] Acquire real-time sampled voltage data and real-time sampled current data, and calculate real-time impedance value and real-time power according to the real-time sampled voltage data and the real-time sampled current data;

[0007] Calculating reference power according to the real-time impedance value and a preset corresponding relationship between impedance and power;

[0008] A phase-shifted full-bridge method is adopted to adjust the output value of the real-time power according to the reference power so that the output value of the real-time power is equal to the value of the reference power.

[0009] In a specific implementation scheme, the calculating of the real-time impedance value and the real-time power according to the real-time sampled voltage data and the real-time sampled current data comprises:

[0010] Calculate and obtain the voltage effective value, current effective value and phase difference according to the real-time sampled voltage data and the real-time sampled current data;

[0011] The real-time impedance value and the real-time power are calculated and obtained according to the voltage effective value, the current effective value and the phase difference.

[0012] In a specific implementation scheme, the calculation method of the voltage effective value, current effective value and phase difference includes:

[0013]

[0014] θ=V θ -I θ

[0015] Among them, V n Represents the real-time sampling voltage data, I n represents the real-time sampling current data, N represents the total number of data points of the sampling data, V rms Indicates the effective value of the voltage, I rms represents the effective value of the current, θ represents the phase difference, V θ Indicates the voltage phase, I θ Indicates the current phase.

[0016] In a specific implementation scheme, the calculation method of the real-time impedance value and the real-time power includes:

[0017]

[0018] P=V rms *I rms *cos(θ)

[0019] Wherein, R represents the real-time impedance value, P represents the real-time power, V rms Indicates the effective value of the voltage, I rms represents the effective value of the current, and θ represents the phase difference.

[0020] In a specific implementation scheme, the calculation method of the preset impedance and power correspondence relationship includes:

[0021] lgP REF =-K1+K2R-K3R 2 +K4R 3 ,

[0022] Wherein, K1, K2, K3 and K4 represent coefficients, K1, K3 and K4 are positive numbers less than 1, and K2 is a positive number less than 5; R represents the real-time impedance; P REF represents the reference power.

[0023] In a specific implementation scheme, the electrosurgical generator power control system includes an FPGA module; the use of a phase-shifted full-bridge method to adjust the output value of the real-time power according to the reference power so that the output value of the real-time power is equal to the value of the reference power includes:

[0024] Input the reference power and the real-time power into a preset PID control algorithm to calculate and output a PID control amount;

[0025] Inputting the PID control amount into the FPGA module, and controlling the FPGA module to generate a PWM signal with a phase shift difference;

[0026] A phase-shifted full-bridge method is adopted to adjust the output value of the real-time power according to the PWM signal with a phase-shifted difference, so that the output value of the real-time power is equal to the value of the reference power.

[0027] In a specific implementation scheme, the inputting the reference power and the real-time power into a preset PID control algorithm to calculate and output the PID control amount comprises:

[0028] P e =P REF -P

[0029] P D =P e -P e(n-1)

[0030] Out=PID K *P e +PID I *∑P e +PID D *P D

[0031] Among them, P REF represents the reference power, P represents the real-time power, and P e Represents the power error, P D Indicates power differential, PID K Indicates the proportional coefficient of the preset PID control algorithm, PID I Indicates the integral coefficient of the preset PID control algorithm, PID D Represents the differential coefficient of the preset PID control algorithm.

[0032] In a second aspect, the present application provides an electrosurgical generator power control device, which adopts the following technical solution: the device is applied to an electrosurgical generator power control system, and the device includes:

[0033] A real-time data calculation module, used to obtain real-time sampled voltage data and real-time sampled current data, and calculate the real-time impedance value and real-time power according to the real-time sampled voltage data and the real-time sampled current data;

[0034] A reference power calculation module, used to calculate the reference power according to the real-time impedance value and a preset impedance-power correspondence relationship;

[0035] The real-time power adjustment module is used to adjust the output value of the real-time power according to the reference power by adopting a phase-shifted full-bridge method, so that the output value of the real-time power is equal to the value of the reference power.

[0036] In a third aspect, the present application provides a computer device, which adopts the following technical solution: it includes a memory and a processor, and the memory stores a computer program that can be loaded by the processor and execute any of the above-mentioned electrosurgical generator power control methods.

[0037] In a fourth aspect, the present application provides a computer-readable storage medium, which adopts the following technical solution: storing a computer program that can be loaded by a processor and execute any of the above-mentioned electrosurgical generator power control methods.

[0038] In summary, this application has the following beneficial technical effects:

[0039] By acquiring the sampling voltage and sampling current in real time, the real-time impedance value and power can be calculated. Considering that during the use of the device, the power needs to be adjusted according to the protein denaturation process to avoid tissue damage and improve the vascular coagulation effect, the real-time power is adjusted to the reference power output through the phase-shifted full-bridge technology. The entire power adjustment process outputs the adjusted power according to the electrical energy of the load impedance, ensuring that the output power changes dynamically according to the protein denaturation process and is within a safe range, thereby reducing tissue damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 is a flow chart of a method for controlling power of an electrosurgical generator in an embodiment of the present application;

[0041] Figure 2 Schematic diagram of the corresponding relationship between impedance value and reference power in the embodiment of the present application;

[0042] Figure 3 is a schematic diagram of a power control device for an electrosurgical generator in an embodiment of the present application;

[0043] Figure 4 It is a schematic diagram used to embody a computer device in an embodiment of the present application.

[0044] Reference numerals: 301, real-time data calculation module; 302, reference power calculation module; 303, real-time power adjustment module. DETAILED DESCRIPTION

[0045] The following combination Figure 1-Figure 4 This application is described in further detail.

[0046] The embodiment of the present application discloses a power control method for an electrosurgical generator. The power control method for an electrosurgical generator can be used to control the output power of the electrosurgical generator during use, and the output power of the electrosurgical generator can be adjusted in real time as the temperature rises and the protein denaturation process occurs, thereby avoiding high-temperature carbonization of tissues and increasing thermal damage.

[0047] An electrosurgical generator, also known as a high-frequency electric knife, is an instrument that generates high-frequency current to perform surgical operations. Its core function is to use high-frequency current to heat tissues, thereby separating and coagulating tissues, and achieving the purpose of cutting and hemostasis. When an electrosurgical generator (high-frequency electric knife) applies high-frequency current to tissues during operation, as the moisture in the tissue evaporates, the protein heats up and denatures, and the impedance changes at any time. Therefore, power control is required to adjust the power output in a timely manner to avoid high-temperature carbonization of the tissue and increase thermal damage.

[0048] There are some methods for controlling the power of electrosurgical generators. However, the existing power control methods do not output power according to the process of protein denaturation, which may lead to poor vascular coagulation effect. In order to help better control the power output of the device and improve the vascular coagulation effect, the present application provides a method for controlling the power of an electrosurgical generator.

[0049] Reference Figure 1 , the method comprises the following steps:

[0050] S10, acquiring real-time sampled voltage data and real-time sampled current data, and calculating real-time impedance value and real-time power according to the real-time sampled voltage data and real-time sampled current data.

[0051] Specifically, the sampled voltage data and sampled current data collected in real time are obtained. The data can be obtained by obtaining feedback data in real time through the ADC sampling circuit. The voltage and current data collected in real time by the ADC sampling circuit are discrete data points. The real-time impedance value and real-time power can be calculated based on the collected sampled voltage data and sampled current data, so as to control the adjustment of the real-time power.

[0052] An electrosurgical generator is an instrument that performs surgical operations by generating high-frequency current. When the electrosurgical generator applies high-frequency current to tissue, as the moisture in the tissue evaporates and the protein heats up and denatures, the impedance also changes at any time. Therefore, the power needs to be adjusted in real time and cannot operate at a fixed output power. This can improve the final vascular coagulation effect and reduce unnecessary damage.

[0053] S20, calculating the reference power according to the real-time impedance value and the preset corresponding relationship between impedance and power.

[0054] Specifically, due to the use of electrosurgical generators, the evaporation of tissue water will cause the protein to heat up and denature, and the impedance will change. Different impedance values ​​correspond to a reference power. Controlling the real-time power to reach the reference power can avoid high-temperature carbonization and increased thermal damage as much as possible. The corresponding relationship between impedance value and reference power is pre-set, refer to Figure 2 , is a corresponding relationship diagram between impedance value and corresponding reference power, in which the horizontal axis represents impedance value in Ohms, and the vertical axis represents power in Watts; according to the corresponding relationship diagram between impedance and power, the calculation method of the corresponding relationship between impedance and power can be expressed as:

[0055] lgP REF =-K1+K2R-K3R 2 +K4R 3 ,

[0056] Wherein, K1, K2, K3 and K4 represent coefficients, K1, K3 and K4 are positive numbers less than 1, and K2 is a positive number less than 5; R represents real-time impedance; P REF Indicates the reference power.

[0057] In the embodiment of the present application, taking K1 as 0.094, K2 as 2.527, K3 as 0.8325, and K4 as 0.04817 as an example, the calculation method of the corresponding relationship between impedance and power can be expressed as:

[0058] lgP REF =-0.094++2.527R-0.8325R 2 +0.04817R 3 .

[0059] S30, using a phase-shifted full-bridge method, adjusting the output value of the real-time power according to the reference power, so that the output value of the real-time power is equal to the value of the reference power.

[0060] Specifically, the phase-shifted full bridge is based on the pulse width modulation (PWM) technology and the operation of the full bridge circuit. When the input DC voltage passes through the appropriate conversion circuit, a high-frequency square wave signal is formed as the control signal of the phase-shifted full bridge. This high-frequency square wave signal is called the carrier signal. In the phase-shifted full bridge, when the carrier signal is at a high level, the switch elements on the two diagonals of the phase-shifted full bridge are turned on, while the switch elements on the other two diagonals are turned off; when the carrier signal is at a low level, the situation is the opposite. By controlling the on and off time of the switch elements, the amplitude and phase of the output voltage can be adjusted, so that the purpose of adjusting the output power can be achieved. Through the phase-shifted full bridge technology, the measured real-time power is adjusted to the reference power, so that the error between the real-time power and the reference power is 0, and finally the power adjustment is achieved, and the adjusted power is output and acts on the tissue.

[0061] In the present application, the real-time impedance value and power can be calculated by acquiring the sampled voltage and sampled current in real time. Considering that the power needs to be adjusted according to the protein denaturation process to avoid tissue damage and improve the vascular coagulation effect during the use of the device, the real-time power is adjusted to the reference power output through the phase-shifted full-bridge technology. The entire power adjustment process outputs the adjusted power according to the electrical energy of the load impedance, ensuring that the output power changes dynamically according to the protein denaturation process and is within a safe range, thereby reducing tissue damage.

[0062] In one embodiment, the method of calculating the real-time impedance value and the real-time power according to the real-time sampled voltage data and the real-time sampled current data can be specifically performed as follows:

[0063] First, the voltage effective value, current effective value and phase difference are calculated and obtained according to the real-time sampled voltage data and the real-time sampled current data. The calculation formula of the voltage effective value, current effective value and phase difference can be expressed as:

[0064]

[0065] θ=V θ -I θ

[0066] Among them, V n Indicates real-time sampling voltage data, I n represents real-time sampling current data, N represents the total number of data points of the sampling data, V rms Indicates the effective value of voltage, I rms represents the effective value of current, θ represents the phase difference, V θ Indicates the voltage phase, I θ Indicates the current phase.

[0067] Afterwards, the real-time impedance value and the real-time power are calculated and obtained according to the voltage effective value, the current effective value and the phase difference. The calculation method of the calculated real-time impedance value and the real-time power can be expressed as follows:

[0068]

[0069] P=V rms * rms *cos(θ),

[0070] Among them, R represents the real-time impedance value, P represents the real-time power, V rms Indicates the effective value of voltage, I rms represents the effective value of current, and θ represents the phase difference.

[0071] In the present application scheme, the impedance value changes dynamically during the protein denaturation process. The real-time voltage and current data are collected to calculate the real-time impedance value and real-time power. The corresponding reference power is obtained through the real-time impedance value, and the calculated real-time power is adjusted to the reference power output, thereby achieving the purpose of power control, reducing tissue damage, and improving the use effect of the device.

[0072] In one embodiment, the electrosurgical generator power control system includes an FPGA module; a phase-shifted full-bridge method is used to adjust the output value of the real-time power according to the reference power so that the output value of the real-time power is equal to the value of the reference power, which can be specifically implemented as follows:

[0073] First, the reference power and real-time power are input into the preset PID control algorithm to calculate and output the PID control quantity. The calculation method of the PID control quantity output by the PID control algorithm can be expressed as:

[0074] P e =P REF -P

[0075] P D =P e -P e(n-1)

[0076] Out=PID K *P e +PID I *∑P e +PID D *P D

[0077] Among them, P REF represents reference power, P represents real-time power, and P e Represents the power error, P D Indicates power differential, PID KIndicates the proportional coefficient of the preset PID control algorithm, PID I Indicates the integral coefficient of the preset PID control algorithm, PID D Indicates the differential coefficient of the preset PID control algorithm.

[0078] After that, the calculated PID control quantity is input into the FPGA module to control the FPGA module to generate a PWM signal with a phase shift difference; since the power is adjusted using the phase-shifted full-bridge method, which is based on pulse width modulation (PWM) technology and a full-bridge circuit, it is necessary to generate a PWM signal with a phase shift difference according to the output PID control quantity with the help of the FPGA module, so as to adjust the real-time power using the phase-shifted full-bridge method. Finally, the phase-shifted full-bridge method is used to adjust the output value of the real-time power according to the PWM signal with a phase shift difference, so that the output value of the real-time power is equal to the value of the reference power.

[0079] The error between the real-time power and the reference power is calculated by the PID control algorithm, so that it can be adjusted in real time. The output Out of the PID algorithm is the output PID control quantity. When there is an error between the real-time power and the reference power, the calculated power error is not 0, and the final output Out value is not 0, then the real-time power needs to be adjusted. When the adjusted real-time power reaches the reference power, the final output value of the PID control algorithm is 0, then no adjustment is required, and the adjusted power can be output.

[0080] In the present application, the real-time output power is controlled by combining the PID control algorithm and the phase-shifted full-bridge method. The phase-shifted full-bridge is an efficient and stable circuit topology. Combined with the PID control algorithm, the output power is controlled according to the voltage and current data obtained in real time, so that the output power can be dynamically adjusted according to the process of protein temperature rise and denaturation, thereby improving the coagulation effect of blood vessels after the device is used.

[0081] Figure 1 FIG. 1 is a flow chart of a method for controlling the power of an electrosurgical generator in one embodiment. Figure 1 The steps in the flowchart are shown in sequence as indicated by the arrows, but the steps are not necessarily executed in the order indicated by the arrows; unless otherwise specified in this document, there is no strict order restriction for the execution of the steps, and the steps may be executed in other orders; and Figure 1 At least part of the steps may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily executed at the same time, but can be executed at different times. The execution order of these sub-steps or stages is not necessarily sequential, but can be executed in turn or alternately with other steps or at least part of the sub-steps or stages of other steps.

[0082] Based on the above method, an embodiment of the present application also discloses a power control device for an electrosurgical generator.

[0083] Reference Figure 3 , the device includes the following modules:

[0084] A real-time data calculation module 301 is used to obtain real-time sampled voltage data and real-time sampled current data, and calculate real-time impedance value and real-time power according to the real-time sampled voltage data and real-time sampled current data;

[0085] A reference power calculation module 302, used to calculate the reference power according to the real-time impedance value and the preset impedance-power correspondence relationship;

[0086] The real-time power adjustment module 303 is used to adjust the output value of the real-time power according to the reference power by adopting a phase-shifted full-bridge method, so that the output value of the real-time power is equal to the value of the reference power.

[0087] In one embodiment, the real-time data calculation module 301 is specifically used to calculate and obtain the voltage effective value, current effective value and phase difference based on the real-time sampled voltage data and the real-time sampled current data; calculate and obtain the real-time impedance value and real-time power based on the voltage effective value, current effective value and phase difference.

[0088] In one embodiment, the calculation method of the voltage effective value, current effective value and phase difference in the real-time data calculation module 301 includes:

[0089]

[0090] θ=V θ -I θ

[0091] Among them, V n Indicates real-time sampling voltage data, I n represents real-time sampling current data, N represents the total number of data points of the sampling data, V rms Indicates the effective value of voltage, I rms represents the effective value of current, θ represents the phase difference, V θ Indicates the voltage phase, I θ Indicates the current phase.

[0092] In one embodiment, the calculation method of the real-time impedance value and the real-time power in the real-time data calculation module 301 includes:

[0093]

[0094] P=V rms *I rms *cos(θ),

[0095] Among them, R represents the real-time impedance value, P represents the real-time power, V rms Indicates the effective value of voltage, I rms represents the effective value of current, and θ represents the phase difference.

[0096] In one embodiment, the calculation method of the preset impedance-power correspondence relationship in the reference power calculation module 302 includes:

[0097] lgP REF =-K1+K2R-K3R 2 +K4R 3 ,

[0098] Wherein, K1, K2, K3 and K4 represent coefficients, K1, K3 and K4 are positive numbers less than 1, and K2 is a positive number less than 5; R represents real-time impedance; P REF Indicates the reference power.

[0099] In one embodiment, the real-time power adjustment module 303 is specifically used to input the reference power and the real-time power into a preset PID control algorithm, calculate and output the PID control amount; input the PID control amount into the FPGA module, and control the FPGA module to generate a PWM signal with a phase shift difference; and use a phase-shifted full-bridge method to adjust the output value of the real-time power according to the PWM signal with a phase shift difference so that the output value of the real-time power is equal to the value of the reference power.

[0100] In one embodiment, the real-time power adjustment module 303 inputs the reference power and the real-time power into a preset PID control algorithm, and calculates and outputs the PID control amount, including:

[0101] P e =P REF -P

[0102] P D =P e -P e(n-1)

[0103] Out=PID K *P e +PID I *∑P e +PID D *P D

[0104] Among them, P REF represents reference power, P represents real-time power, and P e Represents the power error, P D Indicates power differential, PID K Indicates the proportional coefficient of the preset PID control algorithm, PID IIndicates the integral coefficient of the preset PID control algorithm, PID D Indicates the differential coefficient of the preset PID control algorithm.

[0105] The electrosurgical generator power control device provided in the embodiment of the present application can be applied to the electrosurgical generator power control method provided in the above embodiment. For relevant details, refer to the above method embodiment. The implementation principle and technical effect are similar and will not be repeated here.

[0106] It should be noted that: the electrosurgical generator power control device provided in the embodiment of the present application only uses the division of the above-mentioned functional modules / functional units as an example when performing electrosurgical generator power control. In actual applications, the above-mentioned functions can be assigned to different functional modules / functional units as needed, that is, the internal structure of the electrosurgical generator power control device is divided into different functional modules / functional units to complete all or part of the functions described above. In addition, the implementation method of the electrosurgical generator power control method provided in the above method embodiment and the implementation method of the electrosurgical generator power control device provided in this embodiment belong to the same concept. The specific implementation process of the electrosurgical generator power control device provided in this embodiment is detailed in the above method embodiment, which will not be repeated here.

[0107] The embodiment of the present application also discloses a computer device.

[0108] Specifically, if Figure 4 As shown, the computer device can be a computer device such as a desktop computer, a laptop computer, a PDA, and a cloud server. The computer device may include, but is not limited to, a processor and a memory. The processor and the memory may be connected via a bus or otherwise. The processor may be a central processing unit (CPU). The processor may also be other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, graphics processors (GPU), embedded neural network processors (NPU) or other dedicated deep learning coprocessors, discrete gates or transistor logic devices, discrete hardware components and other chips, or a combination of the above-mentioned various chips.

[0109] As a non-transient computer-readable storage medium, the memory can be used to store non-transient software programs, non-transient computer executable programs and modules, such as program instructions / modules corresponding to the methods in the above-mentioned embodiments of the present application. The processor executes various functional applications and data processing of the processor by running the non-transient software programs, instructions and modules stored in the memory, that is, the method in the above-mentioned method implementation is realized. The memory may include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application required for at least one function; the data storage area may store data created by the processor, etc. In addition, the memory may include a high-speed random access memory, and may also include a non-transient memory, such as at least one disk storage device, a flash memory device, or other non-transient solid-state storage device. In some embodiments, the memory may optionally include a memory remotely arranged relative to the processor, and these remote memories may be connected to the processor via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network and a combination thereof.

[0110] The embodiment of the present application also discloses a computer-readable storage medium.

[0111] Specifically, a computer-readable storage medium is used to store a computer program, and when the computer program is executed by a processor, the method in the above-mentioned method implementation is implemented. Those skilled in the art will understand that the implementation of all or part of the process in the above-mentioned implementation method of the present application can be completed by instructing the relevant hardware through a computer program, and the program can be stored in a computer-readable storage medium, and the program, when executed, may include the process of the implementation of the above-mentioned methods. Among them, the storage medium may be a disk, an optical disk, a read-only memory (ROM), a random access memory (RAM), a flash memory (Flash Memory), a hard disk (Hard Disk Drive, abbreviated as: HDD) or a solid-state drive (SSD), etc.; the storage medium may also include a combination of the above-mentioned types of memory.

[0112] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

Claims

1. A method for controlling power of an electrosurgical generator, characterized in that: The method is applied to an electrosurgical generator power control system, and the method comprises: Acquire real-time sampled voltage data and real-time sampled current data, and calculate real-time impedance value and real-time power according to the real-time sampled voltage data and the real-time sampled current data; Calculating reference power according to the real-time impedance value and a preset corresponding relationship between impedance and power; A phase-shifted full-bridge method is adopted to adjust the output value of the real-time power according to the reference power so that the output value of the real-time power is equal to the value of the reference power.

2. The method according to claim 1, characterized in that: The calculating of the real-time impedance value and the real-time power according to the real-time sampled voltage data and the real-time sampled current data comprises: Calculate and obtain the voltage effective value, current effective value and phase difference according to the real-time sampled voltage data and the real-time sampled current data; The real-time impedance value and the real-time power are calculated and obtained according to the voltage effective value, the current effective value and the phase difference.

3. The method according to claim 2, characterized in that: The calculation method of the voltage effective value, current effective value and phase difference includes: θ=V θ -I θ , Among them, V n Represents the real-time sampling voltage data, I n represents the real-time sampling current data, N represents the total number of data points of the sampling data, V rms Indicates the effective value of the voltage, I rms represents the effective value of the current, θ represents the phase difference, V θ Indicates the voltage phase, I θ Indicates the current phase.

4. The method according to claim 2, characterized in that: The calculation method of the real-time impedance value and the real-time power includes: P=V rms *I rms *cos(θ), Wherein, R represents the real-time impedance value, P represents the real-time power, V rms Indicates the effective value of the voltage, I rms represents the effective value of the current, and θ represents the phase difference.

5. The method according to claim 1, characterized in that: The calculation method of the preset impedance and power correspondence relationship includes: lgP REF =-K1+K2R-K3R 2 +K4R 3 , Wherein, K1, K2, K3 and K4 represent coefficients, K1, K3 and K4 are positive numbers less than 1, and K2 is a positive number less than 5; R represents the real-time impedance; P REF represents the reference power.

6. The method according to claim 1, characterized in that: The electrosurgical generator power control system includes an FPGA module; The adopting of the phase-shifted full-bridge method to adjust the output value of the real-time power according to the reference power so that the output value of the real-time power is equal to the value of the reference power comprises: Input the reference power and the real-time power into a preset PID control algorithm to calculate and output a PID control amount; Inputting the PID control amount into the FPGA module, and controlling the FPGA module to generate a PWM signal with a phase shift difference; A phase-shifted full-bridge method is adopted to adjust the output value of the real-time power according to the PWM signal with a phase-shifted difference, so that the output value of the real-time power is equal to the value of the reference power.

7. The method according to claim 6, characterized in that: The inputting the reference power and the real-time power into a preset PID control algorithm to calculate and output the PID control amount comprises: P e =P REF -P P D =P e -P e(n-1) Out=PID K *P e +PID I *ΣP e +PID D *P D , Among them, P REF represents the reference power, P represents the real-time power, and P e Represents the power error, P D Indicates power differential, PID K Indicates the proportional coefficient of the preset PID control algorithm, PID I Indicates the integral coefficient of the preset PID control algorithm, PID D Represents the differential coefficient of the preset PID control algorithm.

8. An electrosurgical generator power control device, characterized in that: The device is applied to an electrosurgical generator power control system, and the device comprises: A real-time data calculation module (301), used for acquiring real-time sampled voltage data and real-time sampled current data, and calculating a real-time impedance value and a real-time power according to the real-time sampled voltage data and the real-time sampled current data; A reference power calculation module (302), used for calculating the reference power according to the real-time impedance value and a preset impedance-power correspondence relationship; The real-time power adjustment module (303) is used to use a phase-shifted full-bridge method to adjust the output value of the real-time power according to the reference power so that the output value of the real-time power is equal to the value of the reference power.

9. A computer device, characterized in that: The method comprises a memory and a processor, wherein the memory stores a computer program that can be loaded by the processor and executes the method according to any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that: A computer program is stored which can be loaded by a processor and execute the method according to any one of claims 1 to 7.

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