阅读说明：本技术 一种高安全性射频消融系统 (High-safety radio frequency ablation system ) 是由 佟旭 宋立新 姚传富 葛军 刘进新 杨克强 于 2019-09-24 设计创作，主要内容包括：本申请涉及一种高安全性射频消融系统,包括微处理器、信息显示报警单元、射频驱动单元、电极温度采集单元、人体阻抗采集单元、输出电参数采集单元、供电单元、射频输出保护开关单元、射频输出隔离单元、自诊断单元、安全保护逻辑判断单元和手动控制单元。本系统采用自诊断单元的工作过程诊断,对输出信号和微处理器故障信号进行逻辑判断,并可手动断开射频输出,具有输出保护功能,确保治疗过程的安全性。(The application relates to a high-safety radio frequency ablation system which comprises a microprocessor, an information display alarm unit, a radio frequency driving unit, an electrode temperature acquisition unit, a human body impedance acquisition unit, an output electrical parameter acquisition unit, a power supply unit, a radio frequency output protection switch unit, a radio frequency output isolation unit, a self-diagnosis unit, a safety protection logic judgment unit and a manual control unit. The system adopts the working process diagnosis of the self-diagnosis unit to carry out logic judgment on the output signal and the fault signal of the microprocessor, can manually cut off the radio frequency output, has the output protection function and ensures the safety of the treatment process.)

1. The utility model provides a high security radiofrequency ablation system, includes microprocessor, information display alarm unit, radio frequency drive unit, electrode temperature acquisition unit, human impedance acquisition unit, output electrical parameter acquisition unit and power supply unit, power supply unit includes system power supply module and radio frequency drive power module, its characterized in that, the system still includes radio frequency output protection switch unit, radio frequency output isolation unit, self-diagnosis unit, safety protection logic judgement unit and manual control unit, the one end of radio frequency output protection switch unit with radio frequency drive unit electricity is connected, the other end of radio frequency output protection switch unit with the one end electricity of radio frequency output isolation unit is connected, the other end of radio frequency output isolation unit is connected with neutral plate electrode and radiofrequency ablation pipe electricity respectively, microprocessor respectively with information display alarm unit, the output of the information display alarm unit is received to the radio frequency drive unit, the output electrical parameter acquisition unit is received to, The radio frequency driving unit, the self-diagnosis unit and the safety protection logic judgment unit are electrically connected, one end of the electrode temperature acquisition unit, one end of the human body impedance acquisition unit and one end of the output electrical parameter acquisition unit are electrically connected with the self-diagnosis unit, the other end of the human body impedance acquisition unit and the other end of the output electrical parameter acquisition unit are respectively electrically connected with the neutral electrode plate and the radio frequency ablation catheter, the other end of the electrode temperature acquisition unit is electrically connected with a temperature measurement electrode arranged on the radio frequency ablation catheter, and the safety logic judgment unit receives signals from the microprocessor, the output electrical parameter acquisition unit and the electrode temperature acquisition unit; and the manual control unit is electrically connected with the radio frequency output protection switch unit.

2. The high safety radio frequency ablation system according to claim 1, further comprising a foot switch.

3. The high-safety radio frequency ablation system according to claim 1, wherein the self-diagnosis unit comprises an electrical parameter acquisition diagnosis module, an electrode temperature acquisition diagnosis module, a human body impedance acquisition diagnosis module and a safety protection logic diagnosis module, the electrical parameter acquisition diagnosis module, the electrode temperature acquisition diagnosis module, the human body impedance acquisition diagnosis module and the safety protection logic diagnosis module respectively judge signals from the output electrical parameter acquisition unit, the electrode temperature acquisition unit, the human body impedance acquisition unit and the safety protection logic judgment unit, judge and identify fault signals, send fault information to the microprocessor, and output corresponding fault information through the information display alarm unit connected with the microprocessor.

4. the high-safety radio frequency ablation system according to claim 3, wherein the electrical parameter acquisition and diagnosis module judges the working state of the output electrical parameter acquisition unit, sets a fault mode according to a specific failure mode of the output electrical parameter acquisition unit, establishes a self-diagnosis mode with the self-diagnosis unit, automatically identifies the self-diagnosis unit if a fault occurs, sends a fault signal to the microprocessor, and outputs the fault information of the output electrical parameter acquisition unit through the information display and alarm unit; the electrode temperature acquisition and diagnosis module judges the working state of the electrode temperature acquisition unit, sets a fault mode according to a specific failure mode of the electrode temperature acquisition unit, establishes a self-diagnosis mode between the electrode temperature acquisition unit and the self-diagnosis unit, automatically identifies the self-diagnosis unit if a fault occurs, sends a fault signal to the microprocessor, and outputs the fault information of the electrode temperature acquisition unit through the information display and alarm unit; the human body impedance acquisition and diagnosis module is used for judging the working state of the human body impedance acquisition unit, setting a fault mode according to a specific failure mode of the human body impedance acquisition unit, establishing a self-diagnosis mode by the human body impedance acquisition unit and the self-diagnosis unit, automatically identifying the self-diagnosis unit if a fault occurs, sending a fault signal to the microprocessor, and outputting the fault information of the human body impedance acquisition unit through the information display alarm unit; the safety protection logic diagnosis module judges the working state from the safety protection logic judgment unit, sets a fault mode according to the specific failure mode of the safety protection logic judgment unit, establishes a self-diagnosis mode with the safety protection logic judgment unit, automatically identifies the self-diagnosis unit if a fault occurs, sends a fault signal to the microprocessor, and outputs the fault information of the safety protection logic judgment unit through the information display alarm unit.

5. The high-safety radiofrequency ablation system of claim 1, wherein the safety protection logic judgment unit is composed of a one-out-of-three logic processor, and is configured to judge whether the radiofrequency output overvoltage signal, the treatment electrode overtemperature signal, and the microprocessor failure signal meet set requirements, perform one-out-of-three logic processing, send out a safety protection signal, trigger the radiofrequency output protection switch unit, thereby disconnect a physical link of the radiofrequency output signal, and output corresponding alarm information to the information display alarm unit.

6. The high-safety radiofrequency ablation system of claim 5, wherein when any one of the signals of the failure of the microprocessor, the overvoltage of the radiofrequency output and the overtemperature of the treatment electrode occurs, the safety protection logic judgment unit outputs a safety protection signal to trigger the radiofrequency output protection switch unit, so that a physical link of the radiofrequency output signal is disconnected, and meanwhile, corresponding alarm information is output to the information display alarm unit.

7. The high safety radiofrequency ablation system of claim 1, wherein the manual control unit is comprised of a manual disconnect switch.

8. The high-safety radiofrequency ablation system of claim 1, wherein the radiofrequency output protection switch unit is configured to receive activation signals from the manual control unit and the safety protection logic determination unit to disconnect the physical link of the radiofrequency output signal, the radiofrequency output protection switch unit is composed of two relays connected in series, one of the two relays is disconnected to disconnect the physical link of the radiofrequency output signal, and the control modes of the two relays are in a loop.

9. The high safety radiofrequency ablation system of claim 8, wherein the radiofrequency output protection switch unit is in a normally open state.

10. The high safety radiofrequency ablation system of claim 1, wherein the high safety radiofrequency ablation system employs a PID closed loop temperature control algorithm to control electrode temperature.

Technical Field

The invention belongs to the technical field of medical electronics, and particularly relates to a high-safety radio frequency ablation system.

Background

The radio frequency ablation technology adopts a plurality of minimally invasive treatment modes, radio frequency energy is generated by a radio frequency generator and transmitted to the operation electrode, positive ions and negative ions in tissue cells around the operation electrode move rapidly, and molecules vibrate, rub and generate heat, so that water inside and outside the cells is evaporated, dried, and solidified and dropped to cause aseptic necrosis, thereby achieving the purpose of treatment.

In order to achieve better treatment effect and safer treatment process, stable closed-loop control and safe design of system guidance are required. However, existing rf ablation systems do not provide functional diagnostics on critical components of the system during operation. In addition, when faults such as overvoltage, overtemperature, processor failure and the like occur, the device does not automatically perform safety logic judgment, and a safety protection switch is lacked to cut off a radio frequency output signal.

In addition, the existing radio frequency ablation system basically adopts an electric control technology, and when a circuit and electrical equipment have faults, the device generally does not adopt a manual output cutting measure to cut off the radio frequency energy output. Thus presenting a safety hazard.

Disclosure of Invention

In order to solve the technical problems, the invention provides a high-safety radiofrequency ablation system, which improves the reliability of the working process of the system and ensures the safety protection of a patient in the use process during ablation treatment.

The purpose of the invention is realized by the following technical scheme:

The utility model provides a high security radiofrequency ablation system, includes microprocessor, information display alarm unit, radio frequency drive unit, electrode temperature acquisition unit, human impedance acquisition unit, output electrical parameter acquisition unit and power supply unit, power supply unit includes system power supply module and radio frequency drive power module, the system still includes radio frequency output protection switch unit, radio frequency output isolation unit, self-diagnosis unit, safety protection logic judgement unit and manual control unit, the one end of radio frequency output protection switch unit with radio frequency drive unit electricity is connected, the other end of radio frequency output protection switch unit with the one end electricity of radio frequency output isolation unit is connected, the other end of radio frequency output isolation unit is connected with neutral electrode board and radio frequency ablation pipe electricity respectively, microprocessor respectively with information display alarm unit, radio frequency drive unit, electrode temperature acquisition unit, human impedance acquisition unit, output electrical parameter acquisition unit and power supply unit, the system still, The radio frequency driving unit, the self-diagnosis unit and the safety protection logic judgment unit are electrically connected, one end of the electrode temperature acquisition unit, one end of the human body impedance acquisition unit and one end of the output electrical parameter acquisition unit are electrically connected with the self-diagnosis unit, the other ends of the human body impedance acquisition unit and the output electrical parameter acquisition unit are respectively and electrically connected with the neutral electrode plate and the radio frequency ablation catheter, the other end of the electrode temperature acquisition unit is electrically connected with a temperature measuring electrode arranged on the radiofrequency ablation catheter, the safety logic judgment unit receives signals from the microprocessor, the output electrical parameter acquisition unit and the electrode temperature acquisition unit, and the manual control unit is electrically connected with the radio frequency output protection switch unit.

The purpose of the invention can be further realized by the following technical scheme:

In one embodiment, the high safety radiofrequency ablation system further comprises a foot switch.

In one embodiment, the self-diagnosis unit includes an electrical parameter acquisition and diagnosis module, an electrode temperature acquisition and diagnosis module, a human body impedance acquisition and diagnosis module, and a safety protection logic diagnosis module, wherein the electrical parameter acquisition and diagnosis module, the electrode temperature acquisition and diagnosis module, the human body impedance acquisition and diagnosis module, and the safety protection logic diagnosis module respectively judge signals from the output electrical parameter acquisition unit, the electrode temperature acquisition unit, the human body impedance acquisition unit, and the safety protection logic judgment unit, judge and identify a fault signal, send fault information to the microprocessor, and output corresponding fault information through the information display alarm unit connected with the microprocessor.

In a preferred embodiment, the electrical parameter acquisition and diagnosis module judges the working state of the output electrical parameter acquisition unit, sets a fault mode according to a specific failure mode of the output electrical parameter acquisition unit, establishes a self-diagnosis mode with the output electrical parameter acquisition unit, automatically identifies the self-diagnosis unit if a fault occurs, sends a fault signal to the microprocessor, and outputs the fault information of the output electrical parameter acquisition unit through the information display alarm unit; the electrode temperature acquisition and diagnosis module judges the working state of the electrode temperature acquisition unit, sets a fault mode according to a specific failure mode of the electrode temperature acquisition unit, establishes a self-diagnosis mode between the electrode temperature acquisition unit and the self-diagnosis unit, automatically identifies the self-diagnosis unit if a fault occurs, sends a fault signal to the microprocessor, and outputs the fault information of the electrode temperature acquisition unit through the information display and alarm unit; the human body impedance acquisition and diagnosis module is used for judging the working state of the human body impedance acquisition unit, setting a fault mode according to a specific failure mode of the human body impedance acquisition unit, establishing a self-diagnosis mode by the human body impedance acquisition unit and the self-diagnosis unit, automatically identifying the self-diagnosis unit if a fault occurs, sending a fault signal to the microprocessor, and outputting the fault information of the human body impedance acquisition unit through the information display alarm unit; the safety protection logic diagnosis module judges the working state from the safety protection logic judgment unit, sets a fault mode according to the specific failure mode of the safety protection logic judgment unit, establishes a self-diagnosis mode with the safety protection logic judgment unit, automatically identifies the self-diagnosis unit if a fault occurs, sends a fault signal to the microprocessor, and outputs the fault information of the safety protection logic judgment unit through the information display alarm unit.

in one embodiment, the safety protection logic judgment unit is composed of a one-out-of-three logic processor, and is configured to judge whether the radio frequency output overvoltage signal, the therapeutic electrode overtemperature signal, and the microprocessor failure signal meet the set requirements, perform one-out-of-three logic processing, send out a safety protection signal, and trigger the radio frequency output protection switch unit, thereby disconnecting a physical link of the radio frequency output signal, and simultaneously output corresponding alarm information to the information display alarm unit.

In a preferred embodiment, when any one of the signals of the microprocessor failure, the radio frequency output overvoltage and the therapeutic electrode overtemperature occurs, the safety protection logic judgment unit outputs a safety protection signal to trigger the radio frequency output protection switch unit, so as to disconnect a physical link of the radio frequency output signal and output corresponding alarm information to the information display alarm unit. The safety protection logic judgment unit is composed of a one-out-of-three logic processor, once a microprocessor of the system can not normally control the radio frequency signal output by the system or other conditions, the safety protection logic judgment unit diagnoses the fault of the microprocessor, and once the microprocessor has a specific fault, the safety protection logic judgment unit outputs a safety protection signal to trigger the radio frequency output protection switch unit, so that a physical link of the radio frequency output signal is disconnected, and meanwhile, corresponding alarm information is output to the information display alarm unit. In the ablation process, when dangerous signals such as radio frequency output overvoltage or over-temperature of a treatment electrode occur, the radio frequency output protection switch unit is triggered, so that a physical link of the radio frequency output signal is disconnected, and meanwhile, corresponding alarm information is output to the information display alarm unit.

In one embodiment, the manual control unit is composed of a manual cut-off switch, and is used for manual starting of an operator in an emergency situation, and once triggered, the radio frequency output protection switch unit is directly disconnected, so that a physical link of a radio frequency output signal is disconnected, the radio frequency output is timely interrupted, and a patient is protected from unnecessary injury. The signal of the manual control unit directly triggers the radio frequency output protection switch unit without passing through the microprocessor and other intermediate links. Once the microprocessor, the self-diagnosis unit and the safety protection logic judgment unit fail or an emergency accident occurs, an operator manually starts the manual control unit, directly triggers the radio frequency output protection switch unit and disconnects a physical link of a radio frequency output signal.

In one embodiment, the rf output protection switch unit is configured to receive start signals from the manual control unit and the safety protection logic determination unit to disconnect a physical link of the rf output signal, the rf output protection switch unit is composed of two relays connected in series, the two relays can disconnect the physical link of the rf output signal as long as one of the two relays is disconnected, and the two relays share a control loop to ensure that the manual control unit and the safety protection logic determination unit can control the two relays simultaneously.

In a preferred embodiment, the rf output protection switch unit is in a normally open state to ensure high reliability of the rf output protection switch unit.

In one embodiment, the high safety radiofrequency ablation system employs a PID closed loop temperature control algorithm to control the electrode temperature. The microprocessor receives the temperature signal transmitted to the self-diagnosis unit by the electrode temperature acquisition unit, and then the microprocessor performs PID algorithm control to adjust the driving energy of the radio frequency driving unit and ensure that the temperature of the treatment electrode is controlled in a specified range.

Compared with the prior art, the invention has the advantages that: 1. the radio frequency ablation system has a self-diagnosis function, adopts the working process diagnosis of the self-diagnosis unit to carry out logic judgment on the output signal and the fault signal of the microprocessor; 2. the radio frequency ablation system has a safety protection function, and can manually cut off the radio frequency output to ensure the safety of the treatment process; 3. the radio frequency ablation system has the function of starting radio frequency output; 4. the radiofrequency ablation system of the invention also has a temperature regulation function.

Drawings

Fig. 1 is a schematic structural diagram of the high-safety rf ablation system of the present invention.

Detailed Description

The present invention will be described in detail below with reference to the attached drawings in conjunction with embodiments of the present application.

Referring to fig. 1, a high-safety radiofrequency ablation system comprises a microprocessor, an information display alarm unit, a radiofrequency driving unit, an electrode temperature acquisition unit, a human body impedance acquisition unit, an output electrical parameter acquisition unit and a power supply unit, wherein the power supply unit comprises a system power supply module and a radiofrequency driving power supply module, the system further comprises a radiofrequency output protection switch unit, a radiofrequency output isolation unit, a self-diagnosis unit, a safety protection logic judgment unit and a manual control unit, and the system power supply module supplies power to the microprocessor, the information display alarm unit, the electrode temperature acquisition unit, the human body impedance acquisition unit, the output electrical parameter acquisition unit, the self-diagnosis unit, the safety protection logic judgment unit and the manual control unit. The radio frequency driving power supply module supplies power to the radio frequency driving unit, the radio frequency output protection switch unit and the radio frequency output isolation unit. One end of the radio frequency output protection switch unit is electrically connected with the radio frequency driving unit, the other end of the radio frequency output protection switch unit is electrically connected with one end of the radio frequency output isolation unit, the other end of the radio frequency output isolation unit is electrically connected with a neutral electrode plate and a radio frequency ablation catheter respectively, the microprocessor is electrically connected with the information display alarm unit, the radio frequency driving unit, the self-diagnosis unit and the safety protection logic judgment unit respectively, one ends of the electrode temperature acquisition unit, the human body impedance acquisition unit and the output electrical parameter acquisition unit are electrically connected with the self-diagnosis unit, the other ends of the human body impedance acquisition unit and the output electrical parameter acquisition unit are electrically connected with the neutral electrode plate and the radio frequency ablation catheter respectively, and the electrode temperature acquisition unit is electrically connected with a temperature measurement electrode arranged on the radio frequency ablation catheter, the safety logic judgment unit receives signals from the microprocessor, the output electrical parameter acquisition unit and the electrode temperature acquisition unit and sends judgment signals to the radio frequency output protection switch unit and the information display alarm unit, and the manual control unit is electrically connected with the radio frequency output protection switch unit.

In one embodiment, the high safety radiofrequency ablation system further comprises a foot switch. The foot switch is connected with the microprocessor, the foot switch controls the start and stop of treatment, the foot switch is stepped, a treatment start signal is sent to the microprocessor, the microprocessor starts treatment, and the treatment is stopped by releasing the foot switch.

In one embodiment, the self-diagnosis unit includes an electrical parameter acquisition and diagnosis module, an electrode temperature acquisition and diagnosis module, a human body impedance acquisition and diagnosis module, and a safety protection logic diagnosis module, wherein the electrical parameter acquisition and diagnosis module, the electrode temperature acquisition and diagnosis module, the human body impedance acquisition and diagnosis module, and the safety protection logic diagnosis module respectively judge signals from the output electrical parameter acquisition unit, the electrode temperature acquisition unit, the human body impedance acquisition unit, and the safety protection logic judgment unit, judge and identify a fault signal, send fault information to the microprocessor, and output corresponding fault information through the information display alarm unit connected with the microprocessor.

In a preferred embodiment, the electrical parameter acquisition and diagnosis module judges the working state of the output electrical parameter acquisition unit, sets a fault mode according to a specific failure mode of the output electrical parameter acquisition unit, establishes a self-diagnosis mode with the output electrical parameter acquisition unit, automatically identifies the self-diagnosis unit if a fault occurs, sends a fault signal to the microprocessor, and outputs the fault information of the output electrical parameter acquisition unit through the information display alarm unit; the electrode temperature acquisition and diagnosis module judges the working state of the electrode temperature acquisition unit, sets a fault mode according to a specific failure mode of the electrode temperature acquisition unit, establishes a self-diagnosis mode between the electrode temperature acquisition unit and the self-diagnosis unit, automatically identifies the self-diagnosis unit if a fault occurs, sends a fault signal to the microprocessor, and outputs the fault information of the electrode temperature acquisition unit through an information display alarm unit; the human body impedance acquisition and diagnosis module is used for judging the working state of the human body impedance acquisition unit, setting a fault mode according to a specific failure mode of the human body impedance acquisition unit, establishing a self-diagnosis mode by the human body impedance acquisition unit and the self-diagnosis unit, automatically identifying the self-diagnosis unit if a fault occurs, sending a fault signal to the microprocessor, and outputting the fault information of the human body impedance acquisition unit through the information display alarm unit; the safety protection logic diagnosis module judges the working state from the safety protection logic judgment unit, sets a fault mode according to the specific failure mode of the safety protection logic judgment unit, establishes a self-diagnosis mode with the safety protection logic judgment unit, automatically identifies the self-diagnosis unit if a fault occurs, sends a fault signal to the microprocessor, and outputs the fault information of the safety protection logic judgment unit through the information display alarm unit.

The radio frequency ablation system has a self-diagnosis function. The microprocessor unit periodically sends a diagnosis instruction to the self-diagnosis unit, and the self-diagnosis unit respectively performs functional self-diagnosis on the output electrical parameter acquisition unit, the electrode temperature acquisition unit, the human body impedance acquisition unit and the safety protection logic judgment unit. The self-diagnosis unit establishes a determined fault mode with the output electrical parameter acquisition unit, the electrode temperature acquisition unit, the human body impedance acquisition unit and the safety protection logic judgment unit respectively, analyzes and judges abnormal fault data of the self-diagnosis unit respectively, sends the fault data to the microprocessor unit, performs corresponding processing by the microprocessor unit, and gives an alarm through the alarm prompt unit. If the electrode temperature acquisition unit is in communication failure, when the self-diagnosis unit receives error data, the failure information is sent to the microprocessor unit, and the microprocessor unit sends the error data to the information display alarm unit to give out failure alarm prompt.

In one embodiment, the safety protection logic judgment unit is composed of a one-out-of-three logic processor, and is configured to judge whether the radio frequency output overvoltage signal, the therapeutic electrode overtemperature signal, and the microprocessor failure signal meet the set requirements, perform one-out-of-three logic processing, send out a safety protection signal, and trigger the radio frequency output protection switch unit, thereby disconnecting a physical link of the radio frequency output signal, and simultaneously output corresponding alarm information to the information display alarm unit. When any one signal of the microprocessor failure, the radio frequency output overvoltage and the therapeutic electrode overtemperature appears, the safety protection logic judgment unit outputs a safety protection signal to trigger the radio frequency output protection switch unit, so that a physical link of the radio frequency output signal is disconnected, and meanwhile, corresponding alarm information is output to the information display alarm unit. That is to say, once the microprocessor of the system cannot normally control the radio frequency signal output by the system or other conditions, the safety protection logic judgment unit will diagnose the fault of the microprocessor, and once the microprocessor has a specific fault, the safety protection logic judgment unit will output the safety protection signal to trigger the radio frequency output protection switch unit, thereby disconnecting the physical link of the radio frequency output signal and simultaneously outputting corresponding alarm information to the information display alarm unit. In the ablation process, when dangerous signals such as radio frequency output overvoltage or over-temperature of a treatment electrode occur, the radio frequency output protection switch unit is triggered, so that a physical link of the radio frequency output signal is disconnected, and meanwhile, corresponding alarm information is output to the information display alarm unit.

In one embodiment, the manual control unit is composed of a manual cut-off switch, and is used for manual starting of an operator in an emergency situation, and once triggered, the radio frequency output protection switch unit is directly disconnected, so that a physical link of a radio frequency output signal is disconnected, the radio frequency output is timely interrupted, and a patient is protected from unnecessary injury. The signal of the manual control unit directly triggers the radio frequency output protection switch unit without passing through the microprocessor and other intermediate links. Once the microprocessor, the self-diagnosis unit and the safety protection logic judgment unit fail or an emergency accident occurs, an operator manually starts the manual control unit, directly triggers the radio frequency output protection switch unit and disconnects a physical link of a radio frequency output signal.

In one embodiment, the rf output protection switch unit is configured to receive a start signal from the manual control unit and the safety protection logic determination unit to disconnect a physical link of the rf output signal, the rf output protection switch unit is composed of two relays connected in series, the two relays can disconnect the physical link of the rf output signal as long as one of the two relays is disconnected, and control modes of the two relays share a loop to ensure that the manual control unit and the safety protection logic determination unit can control the two relays simultaneously. The radio frequency output protection switch unit is in a normally open state so as to ensure high reliability of the radio frequency output protection switch unit.

The radio frequency ablation system has a safety protection function. The function is realized by a safety protection logic judgment unit, a radio frequency output protection switch unit and a manual control unit. The safety protection logic judgment unit collects relevant fault information of microprocessor failure, radio frequency output overvoltage and treatment electrode overtemperature, and carries out one-out-of-three logic judgment, once any signal of output overvoltage, treatment electrode overtemperature and microprocessor failure occurs, the safety protection logic judgment unit sends a radio frequency output closing instruction to the radio frequency output protection unit, and the radio frequency output protection unit closes a relay of the radio frequency output protection unit to cut off a radio frequency energy output link. If the microprocessor has a crash fault, a microprocessor failure signal is sent to the safety protection logic judgment unit, after the safety protection logic judgment unit performs one-out-of-three logic judgment, a radio frequency output closing instruction is sent to the radio frequency output protection unit, the radio frequency output protection unit closes a relay of the radio frequency output protection unit to cut off a radio frequency energy output link, the radio frequency energy output is interrupted, a human body is protected from being injured, and meanwhile, an alarm is given through the information display alarm unit. When an operator finds an abnormal fault or an emergency, the operator presses an operation button of the manual control unit to interrupt a relay in the radio frequency output protection unit, directly cuts off a radio frequency energy output link and interrupts radio frequency energy output.

The radio frequency ablation system has the function of starting radio frequency output. After the system is powered on and started, the system enters a display interface to display information such as radio frequency output power, electrode temperature, human body impedance and the like; the system prompts preparation electrode intervention, an operator puts a radio frequency electrode into a position needing treatment, a foot switch is started, radio frequency output is conducted, the radio frequency output is output according to the temperature and treatment time which are designed in advance by the system, meanwhile, a microprocessor collects human body impedance at a focus through a human body impedance collecting unit, the microprocessor collects the focus temperature at the electrode through an electrode temperature collecting unit, whether the radio frequency output is stopped or not is judged through the focus temperature at the electrode and the human body impedance at the focus at the moment, when the conditions are met, the system can automatically stop the output, and the information display alarm unit prompts treatment stopping information to complete treatment.

The radiofrequency ablation system of the invention also has a temperature regulation function. After the electrode is inserted into a human body, the temperature of the electrode can change along with the temperature of a peripheral focus, the electrode is heated after the radio frequency output is started, and the electrode enters a temperature adjusting process when the electrode is heated to a preset temperature.

While the preferred embodiments of the present invention have been described in detail, it will be understood by those skilled in the art that the foregoing and various other changes, omissions and deviations in the form and detail thereof may be made without departing from the scope of this invention.