Radio frequency ablation measurement and control system and measurement and control method

Abstract

The invention discloses a radio frequency ablation measurement and control system and method, and relates to the technical field of medical equipment, and the system comprises a radio frequency generation module, a multi-dimensional monitoring module, a central control module, a feedback adjustment module, a man-machine interaction module and a safety protection module. The multi-dimensional monitoring module achieves synchronous and accurate acquisition of temperature, impedance and power, the central control module generates an adjusting instruction through a double-closed-loop PI control algorithm, the feedback adjusting module dynamically corrects radio frequency output parameters, the safety protection module adopts a three-level protection mechanism to guarantee diagnosis and treatment safety, and the man-machine interaction module supports whole-process parameter management and data interaction. The invention aims to solve the problems of single monitoring, feedback adjustment lagging and insufficient safety protection of the existing radiofrequency ablation system. According to the invention, precise and safe control of radiofrequency ablation is realized, the effectiveness and safety of ablation treatment are improved, and the system is suitable for minimally invasive treatment scenes of diseases such as tumors and the like.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and more specifically to a radiofrequency ablation measurement and control system and method. Background Technology

[0002] Currently, radiofrequency ablation is a minimally invasive treatment that uses ablation electrodes to deliver radiofrequency energy to target tissue, causing coagulative necrosis and thus treating diseases such as tumors. During radiofrequency ablation, key parameters such as the output of radiofrequency energy, tissue temperature, and impedance directly affect the treatment's effectiveness and safety: excessively high energy output or temperature may damage surrounding normal tissue; insufficient energy output or abnormal impedance may lead to incomplete ablation.

[0003] Existing radiofrequency ablation systems mostly use single-dimensional monitoring (such as monitoring only temperature or power), which has problems such as incomplete monitoring and lagging feedback adjustment. At the same time, safety protection mechanisms are mostly based on single threshold triggering, lacking coordinated judgment of multiple parameters, making it difficult to cope with complex clinical scenarios.

[0004] Therefore, there is an urgent need for a radiofrequency ablation measurement and control system that can achieve multi-dimensional accurate monitoring, real-time feedback adjustment, and comprehensive safety protection. Summary of the Invention

[0005] In view of this, the present invention provides a radiofrequency ablation measurement and control system and method to solve the problems existing in the background art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A radiofrequency ablation monitoring and control system, comprising: The radio frequency (RF) generator module is used to generate frequency- and amplitude-modulated RF energy. The multi-dimensional monitoring module includes a temperature monitoring unit, an impedance monitoring unit, and a power monitoring unit. The temperature monitoring unit uses distributed fiber optic sensors and is set at different ablation sites of the ablation electrode. The impedance monitoring unit collects the tissue impedance of the ablation area in real time. The power monitoring unit collects the actual output power of the radio frequency generation module. The central control module is connected to the radio frequency generation module, the multi-dimensional monitoring module, the feedback adjustment module, the human-machine interaction module, and the safety protection module. It is used to receive monitoring data, execute the dual closed-loop PI control algorithm, and output control commands. The feedback adjustment module responds to the instructions of the central control module and adjusts the output power, frequency, and pulse width of the radio frequency generator module. The human-computer interaction module is used for preoperative parameter setting, real-time display of intraoperative data, and export of postoperative data. The safety protection module pre-stores temperature, impedance, and power safety thresholds. When the monitored data exceeds the threshold, an alarm is triggered and the radio frequency generator module is controlled to stop output or reduce power.

[0007] Optionally, the dual-closed-loop PI control algorithm executed by the central control module includes a temperature closed-loop control sub-algorithm and an impedance closed-loop control sub-algorithm, wherein the formula for the temperature closed-loop control sub-algorithm is:

[0008] in, The RF output power command value for the kth sampling period; This is the temperature proportionality coefficient; Let K be the temperature deviation of the k-th sampling. ; The target ablation temperature set before the procedure; The average measured temperature of the distributed fiber optic sensor during the k-th sampling is denoted as . This is the temperature integral coefficient; The sampling period; This is the reference power.

[0009] Optionally, the impedance closed-loop control sub-algorithm is used to dynamically correct the output power of the temperature closed loop, as shown in the formula:

[0010] in, This is the corrected final power command value; This is the impedance proportionality coefficient; The impedance deviation is the value of the k-th sample. ; This represents the tissue impedance measurement value from the kth sampling. The reference impedance set before the operation; This is the impedance integral coefficient.

[0011] Optionally, the temperature monitoring unit uses a distributed Bragg fiber grating sensor array, with a sensing point set every 2 mm along the ablation electrode axis, for a total of 8 to 12 sensing points, covering different ablation sites; the impedance monitoring unit collects the tissue impedance of the ablation area in real time at a sampling rate of 1 kHz; the power monitoring unit uses a Hall current sensor to collect the actual output power of the radio frequency generation module at a sampling rate of 10 kHz.

[0012] Optionally, the wavelength shift of the distributed Bragg fiber grating sensor array is related to temperature as follows:

[0013] in The wavelength shift of the distributed Bragg fiber grating sensor; This is the initial center wavelength of the distributed Bragg fiber grating sensor. The coefficient of thermal expansion of optical fiber; The optical fiber thermo-optic coefficient; This represents the temperature change. Optionally, the feedback adjustment module includes a power adjustment unit, a frequency adjustment unit, and a pulse width adjustment unit. The power adjustment unit controls the output gain of the radio frequency generator module by outputting an adjustable gain voltage, thereby achieving continuous power adjustment. The frequency adjustment unit sends a frequency control word to the radio frequency generation module to achieve step adjustment within the frequency range; The pulse width adjustment unit adjusts the pulse width by regulating the duty cycle of the pulse generator. Optionally, the human-computer interaction module includes the following functions: It supports independent settings for target temperature, reference impedance, RF frequency, ablation time, and pulse width, and saves multiple sets of historical parameter schemes, which can be recalled with one click. It uses a touch screen to display the temperature curves of 8 to 12 ablation sites, real-time tissue impedance values, dynamic output power curves, remaining ablation time, and protection level alarm indicators in real time. It also supports zooming in on the single-channel temperature curve. Data can be exported via USB 3.0 or Ethernet interface. The exported file includes timestamps of the entire ablation process, raw data of each monitoring parameter, device operation status log, and alarm records. Optionally, the safety protection module includes a three-level protection mechanism: Level 1 protection: When the monitored data exceeds the threshold by less than 10%, an audible and visual alarm is triggered, and the feedback adjustment module reduces the power by 20%. Level 2 protection: When the monitored data exceeds the threshold by 10%~20%, a continuous alarm is triggered, and the power of the radio frequency generation module is reduced to ≤50W; Level 3 protection: When the monitored data exceeds the threshold by more than 20% or exceeds the threshold for three consecutive sampling cycles, the radio frequency output is immediately cut off, the system is locked, and the fault data is recorded. A radio frequency ablation measurement and control method includes the following steps: S1. Set the target ablation parameters through the human-computer interaction module. The target ablation parameters include target temperature, reference impedance, radio frequency, ablation time and pulse width. At the same time, set the temperature safety threshold, impedance safety threshold and power safety threshold. S2. The radio frequency generation module responds to the start command and generates radio frequency energy that conforms to the initial values ​​of the target ablation parameters; S3. Key data during the ablation process are collected synchronously through a multi-dimensional monitoring module, specifically including: Temperature monitoring: 8 to 12 distributed Bragg fiber grating sensing points arranged every 2 mm along the axis of the ablation electrode are used to collect temperature data at different ablation sites in real time. Impedance monitoring: Tissue impedance data of the ablation area were acquired at a sampling rate of 1 kHz; Power monitoring: The actual output power of the RF generator module is acquired using a Hall current sensor with a sampling rate of 10kHz; S4. The central control module receives the temperature, impedance, and power monitoring data collected in step S3 via the SPI bus, executes the dual closed-loop PI control algorithm, and generates adjustment commands for power, frequency, and pulse width based on the deviation between the monitoring data and the target parameters. S5. The feedback adjustment module responds to the adjustment command of the central control module and dynamically corrects the output parameters of the radio frequency generation module by adjusting the gain of the radio frequency amplifier, the frequency of the phase-locked loop and the duty cycle of the pulse generator, so that the temperature and impedance of the ablation process are maintained within the target range. S6. The safety protection module compares the monitoring data with the preset safety threshold in real time. When the monitoring data exceeds the threshold, it triggers an audible and visual alarm and controls the radio frequency generator module to stop outputting or reduce the power to ≤50W according to the degree of exceeding the threshold. S7. During the procedure, the temperature curve, impedance value, power value and alarm information are displayed in real time through the touch screen of the human-machine interaction module. After the procedure, the data of the entire ablation process can be exported in Excel, PDF or CSV format through the human-machine interaction module.

[0014] As can be seen from the above technical solution, compared with the prior art, this invention discloses a radiofrequency ablation measurement and control system and method, including a radiofrequency generation module, a multi-dimensional monitoring module, a central control module, a feedback adjustment module, a human-machine interaction module, and a safety protection module. The multi-dimensional monitoring module realizes synchronous and accurate acquisition of temperature, impedance, and power; the central control module generates adjustment commands through a dual closed-loop PI control algorithm; the feedback adjustment module dynamically corrects the radiofrequency output parameters; the safety protection module adopts a three-level protection mechanism to ensure the safety of diagnosis and treatment; and the human-machine interaction module supports full-process parameter management and data interaction. This invention aims to solve the problems of single monitoring, lagging feedback adjustment, and insufficient safety protection in existing radiofrequency ablation systems. This invention not only achieves precise and safe control of radiofrequency ablation but also improves the effectiveness and safety of ablation treatment, making it suitable for minimally invasive treatment scenarios for diseases such as tumors. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the system structure provided by the present invention. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] This invention discloses a radio frequency ablation measurement and control system, such as... Figure 1 As shown, it includes: The radio frequency (RF) generator module is used to generate frequency- and amplitude-modulated RF energy. The multi-dimensional monitoring module includes a temperature monitoring unit, an impedance monitoring unit, and a power monitoring unit. The temperature monitoring unit uses distributed fiber optic sensors and is set at different ablation sites of the ablation electrode. The impedance monitoring unit collects the tissue impedance of the ablation area in real time, and the power monitoring unit collects the actual output power of the radio frequency generation module. The central control module is connected to the radio frequency generation module, the multi-dimensional monitoring module, the feedback adjustment module, the human-machine interaction module, and the safety protection module. It is used to receive monitoring data, execute the dual closed-loop PI control algorithm, and output control commands. The feedback adjustment module responds to the instructions of the central control module and adjusts the output power, frequency, and pulse width of the radio frequency generator module. The human-computer interaction module is used for preoperative parameter setting, real-time display of intraoperative data, and export of postoperative data. The safety protection module pre-stores temperature, impedance, and power safety thresholds. When the monitored data exceeds the threshold, an alarm is triggered and the radio frequency generator module is controlled to stop output or reduce power.

[0019] In one specific embodiment, the dual-closed-loop PI control algorithm executed by the central control module includes a temperature closed-loop control sub-algorithm and an impedance closed-loop control sub-algorithm. The formula for the temperature closed-loop control sub-algorithm is as follows:

[0020] in, The RF output power command value for the kth sampling period; This is the temperature proportionality coefficient; Let K be the temperature deviation of the k-th sampling. ; The target ablation temperature set before the procedure; The average measured temperature of the distributed fiber optic sensor during the k-th sampling is denoted as . This is the temperature integral coefficient; The sampling period; This is the reference power.

[0021] In one specific embodiment, the impedance closed-loop control sub-algorithm is used to dynamically correct the output power of the temperature closed-loop, as shown in the formula:

[0022] in, This is the corrected final power command value; This is the impedance proportionality coefficient; The impedance deviation is the value of the k-th sample. ; This represents the tissue impedance measurement value from the kth sampling. The reference impedance set before the operation; This represents the impedance integral coefficient. In one specific embodiment, the temperature monitoring unit employs a distributed Bragg fiber grating sensor array, with a sensing point set every 2 mm along the ablation electrode axis, for a total of 8-12 sensing points, covering different ablation sites; the impedance monitoring unit acquires the tissue impedance of the ablation area in real time at a sampling rate of 1 kHz; the power monitoring unit uses a Hall current sensor to acquire the actual output power of the RF generation module at a sampling rate of 10 kHz. In one specific embodiment, the wavelength drift of the distributed Bragg fiber grating sensor array is related to temperature as follows:

[0023] in The wavelength shift of the distributed Bragg fiber grating sensor; This is the initial center wavelength of the distributed Bragg fiber grating sensor. The coefficient of thermal expansion of optical fiber; The optical fiber thermo-optic coefficient; This represents the temperature change. In one specific embodiment, the feedback regulation module includes a power regulation unit, a frequency regulation unit, and a pulse width regulation unit: The power regulation unit controls the output gain of the RF generator module by outputting an adjustable gain voltage, thereby achieving continuous power regulation. The frequency adjustment unit sends a frequency control word to the radio frequency generation module to achieve step adjustment within the frequency range; The pulse width adjustment unit adjusts the pulse width by regulating the duty cycle of the pulse generator. In a specific embodiment, the human-machine interaction module includes the following functions: It supports independent settings for target temperature, reference impedance, RF frequency, ablation time, and pulse width, and saves multiple sets of historical parameter schemes, which can be recalled with one click. It uses a touch screen to display the temperature curves of 8 to 12 ablation sites, real-time tissue impedance values, dynamic output power curves, remaining ablation time, and protection level alarm indicators in real time. It also supports zooming in on the single-channel temperature curve. Data is exported via USB 3.0 or Ethernet interface. The exported file includes timestamps of the entire ablation process, raw data of various monitoring parameters, device operation status logs, and alarm records. In one specific embodiment, the safety protection module includes a three-level protection mechanism: Level 1 protection: When the monitored data exceeds the threshold by less than 10%, an audible and visual alarm is triggered, and the feedback adjustment module reduces the power by 20%. Level 2 protection: When the monitored data exceeds the threshold by 10%~20%, a continuous alarm is triggered, and the power of the radio frequency generation module is reduced to ≤50W; Level 3 protection: When the monitored data exceeds the threshold by more than 20% or exceeds the threshold for three consecutive sampling cycles, the radio frequency output is immediately cut off, the system is locked, and the fault data is recorded. A radio frequency ablation measurement and control method includes the following steps: S1. Set the target ablation parameters through the human-computer interaction module. The target ablation parameters include target temperature, reference impedance, radio frequency, ablation time and pulse width. At the same time, the temperature safety threshold is set to 60℃, the impedance safety threshold is set to 50~150Ω, and the power safety threshold is set to 10~100W.

[0024] S2. The radio frequency generation module responds to the start command and generates radio frequency energy that conforms to the initial values ​​of the target ablation parameters; S3. Key data during the ablation process are collected synchronously through a multi-dimensional monitoring module, specifically including: Temperature monitoring: 8 to 12 distributed Bragg fiber grating sensing points arranged every 2 mm along the axis of the ablation electrode are used to collect temperature data at different ablation sites in real time. Impedance monitoring: Tissue impedance data of the ablation area were acquired at a sampling rate of 1 kHz; Power monitoring: The actual output power of the RF generator module is acquired using a Hall current sensor with a sampling rate of 10kHz; S4. The central control module receives the temperature, impedance, and power monitoring data collected in step S3 via the SPI bus, executes the dual closed-loop PI control algorithm, and generates adjustment commands for power, frequency, and pulse width based on the deviation between the monitoring data and the target parameters. S5. The feedback adjustment module responds to the adjustment command of the central control module and dynamically corrects the output parameters of the radio frequency generation module by adjusting the gain of the radio frequency amplifier, the frequency of the phase-locked loop and the duty cycle of the pulse generator, so that the temperature and impedance of the ablation process are maintained within the target range. S6. The safety protection module compares the monitoring data with the preset safety threshold in real time. When the monitoring data exceeds the threshold, it triggers an audible and visual alarm and controls the radio frequency generator module to stop outputting or reduce the power to ≤50W according to the degree of exceeding the threshold. S7. During the procedure, the temperature curve, impedance value, power value and alarm information are displayed in real time through the touch screen of the human-machine interaction module. After the procedure, the data of the entire ablation process can be exported in Excel, PDF or CSV format through the human-machine interaction module.

[0025] During the specific treatment process, medical staff can use the human-machine interface module to set the target temperature to 55℃, the reference impedance to 80Ω, the radio frequency to 460kHz, the ablation time to 10min, and the pulse width to 50μs, while simultaneously confirming the safety threshold settings. After the system is started, the radio frequency generation module generates the radio frequency energy corresponding to the initial parameters, and the multi-dimensional monitoring module simultaneously collects temperature data, tissue impedance data, and output power data from 10 ablation sites. The central control module receives data via the SPI bus and executes a dual-closed-loop PI control algorithm. When the temperature of a certain ablation site is 5℃ lower than the target temperature, the temperature closed loop generates a power boost command, and the impedance closed loop corrects the power command based on the deviation between the actual impedance and the reference impedance. The feedback adjustment module boosts the power to 45W by adjusting the gain of the radio frequency amplifier. During the treatment, if the tissue impedance exceeds the threshold by 15% at any moment, the safety protection module triggers secondary protection, continuously triggering an audible and visual alarm, and the power of the radio frequency generation module drops to 50W. After the treatment, the human-machine interface module exports the entire process data in Excel format via the USB 3.0 interface, including timestamps, temperature data, impedance data, power data, and equipment operation logs for each sensor point.

[0026] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0027] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A radio frequency ablation measurement and control system, characterized in that, include: The radio frequency (RF) generator module is used to generate frequency-tunable and amplitude-modulated RF energy. The multi-dimensional monitoring module includes a temperature monitoring unit, an impedance monitoring unit, and a power monitoring unit. The temperature monitoring unit uses distributed fiber optic sensors and is set at different ablation sites of the ablation electrode. The impedance monitoring unit collects the tissue impedance of the ablation area in real time. The power monitoring unit collects the actual output power of the radio frequency generation module. The central control module is connected to the radio frequency generation module, the multi-dimensional monitoring module, the feedback adjustment module, the human-machine interaction module, and the safety protection module. It is used to receive monitoring data, execute the dual closed-loop PI control algorithm, and output control commands. The feedback adjustment module responds to the instructions of the central control module and adjusts the output power, frequency, and pulse width of the radio frequency generator module. The human-computer interaction module is used for preoperative parameter setting, real-time display of intraoperative data, and export of postoperative data. The safety protection module pre-stores temperature, impedance, and power safety thresholds. When the monitored data exceeds the threshold, an alarm is triggered and the radio frequency generator module is controlled to stop output or reduce power.

2. The radio frequency ablation measurement and control system according to claim 1, characterized in that, The dual-closed-loop PI control algorithm executed by the central control module includes a temperature closed-loop control sub-algorithm and an impedance closed-loop control sub-algorithm. The formula for the temperature closed-loop control sub-algorithm is as follows: in, The RF output power command value for the kth sampling period; This is the temperature proportionality coefficient; The temperature deviation of the k-th sampling is... ; The target ablation temperature set before the procedure; The average measured temperature of the distributed fiber optic sensor during the k-th sampling is denoted as . This is the temperature integral coefficient; The sampling period; This is the reference power.

3. The radio frequency ablation measurement and control system according to claim 2, characterized in that, The impedance closed-loop control sub-algorithm is used to dynamically correct the output power of the temperature closed-loop, and the formula is: in, This is the corrected final power command value; This is the impedance proportionality coefficient; The impedance deviation is the value of the k-th sample. ; This represents the tissue impedance measurement value from the kth sampling. The reference impedance set before the operation; This is the impedance integral coefficient.

4. The radio frequency ablation measurement and control system according to claim 1, characterized in that, The temperature monitoring unit uses a distributed Bragg fiber grating sensor array, with a sensing point set every 2 mm along the ablation electrode axis, for a total of 8 to 12 sensing points, covering different ablation sites; the impedance monitoring unit collects the tissue impedance of the ablation area in real time at a sampling rate of 1 kHz; the power monitoring unit uses a Hall current sensor to collect the actual output power of the radio frequency generation module at a sampling rate of 10 kHz.

5. The radio frequency ablation measurement and control system according to claim 4, characterized in that, The relationship between the wavelength drift of the distributed Bragg fiber grating sensor array and temperature is as follows: in The wavelength shift of the distributed Bragg fiber grating sensor; This is the initial center wavelength of the distributed Bragg fiber grating sensor; The coefficient of thermal expansion of optical fiber; The optical fiber thermo-optic coefficient; This represents the change in temperature.

6. The radio frequency ablation measurement and control system according to claim 1, characterized in that, The feedback adjustment module includes a power adjustment unit, a frequency adjustment unit, and a pulse width adjustment unit: The power adjustment unit controls the output gain of the radio frequency generator module by outputting an adjustable gain voltage, thereby achieving continuous power adjustment. The frequency adjustment unit sends a frequency control word to the radio frequency generation module to achieve step adjustment within the frequency range; The pulse width adjustment unit adjusts the pulse width by adjusting the duty cycle of the pulse generator.

7. The radio frequency ablation measurement and control system according to claim 1, characterized in that, The human-computer interaction module includes the following functions: It supports independent settings for target temperature, reference impedance, RF frequency, ablation time, and pulse width, and saves multiple sets of historical parameter schemes, which can be recalled with one click; It uses a touch screen to display the temperature curves of 8 to 12 ablation sites, real-time tissue impedance values, dynamic output power curves, remaining ablation time, and protection level alarm indicators in real time. It also supports zooming in on the single-channel temperature curve. Data can be exported via USB 3.0 or Ethernet interface. The exported file contains timestamps of the entire ablation process, raw data of each monitoring parameter, device operation status log, and alarm records.

8. The radio frequency ablation measurement and control system according to claim 1, characterized in that, The security protection module includes a three-level protection mechanism: Level 1 protection: When the monitored data exceeds the threshold by less than 10%, an audible and visual alarm is triggered, and the feedback adjustment module reduces the power by 20%. Level 2 protection: When the monitored data exceeds the threshold by 10%~20%, a continuous alarm is triggered, and the power of the radio frequency generation module is reduced to ≤50W; Level 3 protection: When the monitored data exceeds the threshold by more than 20% or exceeds the threshold for 3 consecutive sampling cycles, the radio frequency output will be immediately cut off, the system will be locked, and the fault data will be recorded.

9. A radio frequency ablation measurement and control method, characterized in that, The radio frequency ablation measurement and control system according to any one of claims 1-8 includes the following steps: S1. Set the target ablation parameters through the human-computer interaction module. The target ablation parameters include target temperature, reference impedance, radio frequency, ablation time and pulse width. At the same time, set the temperature safety threshold, impedance safety threshold and power safety threshold. S2. The radio frequency generation module responds to the start command and generates radio frequency energy that conforms to the initial values ​​of the target ablation parameters; S3. Key data during the ablation process are collected synchronously through a multi-dimensional monitoring module, specifically including: Temperature monitoring: 8 to 12 distributed Bragg fiber grating sensing points arranged every 2 mm along the axis of the ablation electrode are used to collect temperature data at different ablation sites in real time. Impedance monitoring: Tissue impedance data of the ablation area were acquired at a sampling rate of 1 kHz; Power monitoring: The actual output power of the RF generator module is acquired using a Hall current sensor with a sampling rate of 10kHz; S4. The central control module receives the temperature, impedance, and power monitoring data collected in step S3 via the SPI bus, executes the dual closed-loop PI control algorithm, and generates adjustment commands for power, frequency, and pulse width based on the deviation between the monitoring data and the target parameters. S5. The feedback adjustment module responds to the adjustment command of the central control module and dynamically corrects the output parameters of the radio frequency generation module by adjusting the gain of the radio frequency amplifier, the frequency of the phase-locked loop and the duty cycle of the pulse generator, so that the temperature and impedance of the ablation process are maintained within the target range. S6. The safety protection module compares the monitoring data with the preset safety threshold in real time. When the monitoring data exceeds the threshold, it triggers an audible and visual alarm and controls the radio frequency generator module to stop outputting or reduce the power to ≤50W according to the degree of exceeding the threshold. S7. During the procedure, the temperature curve, impedance value, power value and alarm information are displayed in real time through the touch screen of the human-machine interaction module. After the procedure, the data of the entire ablation process can be exported in Excel, PDF or CSV format through the human-machine interaction module.

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