CN211243679U - High-safety radio frequency ablation system - Google Patents
High-safety radio frequency ablation system Download PDFInfo
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- CN211243679U CN211243679U CN201921588290.0U CN201921588290U CN211243679U CN 211243679 U CN211243679 U CN 211243679U CN 201921588290 U CN201921588290 U CN 201921588290U CN 211243679 U CN211243679 U CN 211243679U
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Abstract
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.
Description
Technical Field
The utility model belongs to the technical field of medical treatment electron, specifically relate to a high security radio frequency melts 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 problem, the utility model provides a high security radio frequency ablation system, this system has improved the reliability of system's working process in melting treatment, ensures to realize patient's safety protection in the use.
The purpose of the utility model is realized through 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 protection 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 utility model can be further realized through 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 the 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 the 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 the 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 the electrode temperature acquisition unit fails, 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 the 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 failure mode of the safety protection logic judgment unit, the safety protection logic judgment unit and the self-diagnosis unit establish a self-diagnosis mode, if the fault occurs, the self-diagnosis unit automatically identifies and sends a fault signal to the microprocessor, and then the information display alarm unit outputs the fault information of the safety protection logic judgment 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 utility model has the advantages of: 1. the utility model discloses a radio frequency ablation system has self-diagnosis function, and the system adopts the working process diagnosis of the self-diagnosis unit to carry out logic judgment on output signals and microprocessor fault signals; 2. the radio frequency ablation system of the utility model has the safety protection function, and can manually cut off the radio frequency output, thereby ensuring the safety of the treatment process; 3. the radio frequency ablation system of the utility model has the function of starting the radio frequency output; 4. the utility model discloses a radio frequency ablation system still has the 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 accompanying drawings in conjunction with embodiments of the present application.
Referring to fig. 1, a high-safety radiofrequency ablation system comprises a microprocessor 1, an information display alarm unit 2, a radiofrequency driving unit 3, an electrode temperature acquisition unit 4, a human body impedance acquisition unit 5, an output electrical parameter acquisition unit 6 and a power supply unit 7, the power supply unit 7 includes a system power supply module 71 and a radio frequency driving power supply module 72, the system also comprises a radio frequency output protection switch unit 8, a radio frequency output isolation unit 9, a self-diagnosis unit 10, a safety protection logic judgment unit 11 and a manual control unit 12, the system power supply module 71 supplies power to the microprocessor 1, the information display alarm unit 2, the electrode temperature acquisition unit 4, the human body impedance acquisition unit 5, the output electrical parameter acquisition unit 6, the self-diagnosis unit 10, the safety protection logic judgment unit 11 and the manual control unit 12. The radio frequency driving power supply module 72 supplies power to the radio frequency driving unit 3, the radio frequency output protection switch unit 8 and the radio frequency output isolation unit 9. One end of the radio frequency output protection switch unit 8 is electrically connected with the radio frequency driving unit 3, the other end of the radio frequency output protection switch unit 8 is electrically connected with one end of the radio frequency output isolation unit 9, the other end of the radio frequency output isolation unit 9 is electrically connected with a neutral electrode plate 14 and a radio frequency ablation catheter respectively, the microprocessor 1 is electrically connected with the information display alarm unit 2, the radio frequency driving unit 3, the self-diagnosis unit 10 and the safety protection logic judgment unit 11 respectively, one end of the electrode temperature acquisition unit 4, one end of the human body impedance acquisition unit 5 and one end of the output electrical parameter acquisition unit 6 are electrically connected with the self-diagnosis unit 10, and the other end of the human body impedance acquisition unit 5 and the other end of the output electrical parameter acquisition unit 6 are electrically connected with the neutral electrode plate 14 and the radio frequency ablation catheter respectively, the electrode temperature acquisition unit 4 is electrically connected with a temperature measurement electrode arranged on the radiofrequency ablation catheter, the safety logic judgment unit receives signals from the microprocessor 1, the output electrical parameter acquisition unit 6 and the electrode temperature acquisition unit 4 and sends a judgment signal to the radiofrequency output protection switch unit 8 and the information display alarm unit 2, and the manual control unit 12 is electrically connected with the radiofrequency output protection switch unit 8. The microprocessor 1 comprises a data storage module 111.
In one embodiment, the high safety radiofrequency ablation system further comprises a foot switch 13. The foot switch 13 is connected with the microprocessor 1, the foot switch 13 controls the start and stop of the treatment, the foot switch 13 is stepped, a treatment start signal is sent to the microprocessor 1, the microprocessor 1 starts the treatment, and the foot switch 13 is released to stop the treatment.
In one embodiment, the self-diagnosis unit 10 includes an electrical parameter acquisition and diagnosis module 101, an electrode temperature acquisition and diagnosis module 103, a human body impedance acquisition and diagnosis module 104, and a safety protection logic diagnosis module 102, where the electrical parameter acquisition and diagnosis module 101, the electrode temperature acquisition and diagnosis module 103, the human body impedance acquisition and diagnosis module 104, and the safety protection logic diagnosis module 102 respectively judge signals from the output electrical parameter acquisition unit 6, the electrode temperature acquisition unit 4, the human body impedance acquisition unit 5, and the safety protection logic judgment unit 11, judge and identify fault signals, send fault information to the microprocessor 1, and output corresponding fault information through the information display alarm unit 2 connected to the microprocessor 1.
In a preferred embodiment, the electrical parameter acquisition and diagnosis module 101 determines the working state of the output electrical parameter acquisition unit 6, sets a fault mode according to the failure mode of the output electrical parameter acquisition unit 6, establishes a self-diagnosis mode between the output electrical parameter acquisition unit 6 and the self-diagnosis unit 10, automatically identifies the fault by the self-diagnosis unit 10 if the fault occurs, sends a fault signal to the microprocessor 1, and outputs the fault information of the output electrical parameter acquisition unit 6 through the information display and alarm unit 2; the electrode temperature acquisition and diagnosis module 103 judges the working state of the electrode temperature acquisition unit 4, sets a fault mode according to the failure mode of the electrode temperature acquisition unit 4, establishes a self-diagnosis mode between the electrode temperature acquisition unit 4 and the self-diagnosis unit 10, automatically identifies the self-diagnosis unit 10 if a fault occurs, sends a fault signal to the microprocessor 1, and outputs the fault information of the electrode temperature acquisition unit 4 through the information display alarm unit 2; the human body impedance acquisition and diagnosis module 104 judges the working state from the human body impedance acquisition unit 5, sets a fault mode according to the failure mode of the human body impedance acquisition unit 5, establishes a self-diagnosis mode between the human body impedance acquisition unit 5 and the self-diagnosis unit 10, automatically identifies the self-diagnosis unit 10 if a fault occurs, sends a fault signal to the microprocessor 1, and outputs the fault information of the human body impedance acquisition unit 5 through the information display alarm unit 2; the safety protection logic diagnosis module 102 judges the working state from the safety protection logic judgment unit 11, sets a fault mode according to the failure mode of the safety protection logic judgment unit 11, the safety protection logic judgment unit 11 and the self-diagnosis unit 10 establish a self-diagnosis mode, if a fault occurs, the self-diagnosis unit 10 automatically identifies and sends a fault signal to the microprocessor 1, and then the information display alarm unit 2 outputs the fault information of the safety protection logic judgment unit 11.
The utility model discloses a radio frequency ablation system has self-diagnostic function. The microprocessor 1 unit periodically sends a diagnosis instruction to the self-diagnosis unit 10, and the self-diagnosis unit 10 respectively performs functional self-diagnosis on the output electrical parameter acquisition unit 6, the electrode temperature acquisition unit 4, the human body impedance acquisition unit 5 and the safety protection logic judgment unit 11. The self-diagnosis unit 10 establishes a determined fault mode with the output electrical parameter acquisition unit 6, the electrode temperature acquisition unit 4, the human body impedance acquisition unit 5 and the safety protection logic judgment unit 11 respectively, the self-diagnosis unit 10 analyzes and judges abnormal fault data of the self-diagnosis unit respectively, sends the fault data to the microprocessor 1 unit, and the microprocessor 1 unit performs corresponding processing and alarms through the alarm prompting unit. If the electrode temperature acquisition unit 4 is in communication failure, when the self-diagnosis unit 10 receives error data, failure information is sent to the microprocessor 1 unit, and the microprocessor 1 unit is sent to the information display alarm unit 2 for failure alarm prompt.
In one embodiment, the safety protection logic determination unit 11 is composed of a one-out-of-three logic processor, and is configured to determine whether the rf output overvoltage signal, the therapeutic electrode overtemperature signal, and the microprocessor 1 failure signal meet the setting requirements, perform one-out-of-three logic processing, send out a safety protection signal, and trigger the rf output protection switch unit 8, thereby disconnecting the physical link of the rf output signal, and simultaneously output corresponding alarm information to the information display alarm unit 2. When any one of the signals of the failure of the microprocessor 1, the over-voltage of the radio frequency output and the over-temperature of the therapeutic electrode occurs, the safety protection logic judgment unit 11 outputs a safety protection signal to trigger the radio frequency output protection switch unit 8, 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 2. That is, once the microprocessor 1 of the system cannot normally control the radio frequency signal output by the system or other conditions, the safety protection logic judgment unit 11 will diagnose the fault of the microprocessor 1, and once the microprocessor 1 has a specific fault, the safety protection logic judgment unit 11 will output a safety protection signal to trigger the radio frequency output protection switch unit 8, thereby disconnecting the physical link of the radio frequency output signal and simultaneously outputting corresponding alarm information to the information display alarm unit 2. 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 8 is triggered, so that a physical link of the radio frequency output signals is disconnected, and meanwhile, corresponding alarm information is output to the information display alarm unit 2.
In one embodiment, the manual control unit 12 is composed of a manual cut-off switch, and is used for manual activation by an operator in case of emergency, and once triggered, directly cuts off the rf output protection switch unit 8, thereby cutting off the physical link of the rf output signal to ensure that the rf output is timely interrupted and the patient is protected from unnecessary injury. The signal of the manual control unit 12 directly triggers the radio frequency output protection switch unit 8 without passing through the microprocessor 1 and other intermediate links. Once the microprocessor 1, the self-diagnosis unit 10 and the safety protection logic judgment unit 11 fail or an emergency accident occurs, an operator manually starts the manual control unit 12 to directly trigger the radio frequency output protection switch unit 8 to disconnect the physical link of the radio frequency output signal.
In one embodiment, the rf output protection switch unit 8 is configured to receive start signals from the manual control unit 12 and the safety protection logic determination unit 11 to disconnect a physical link of the rf output signal, where the rf output protection switch unit 8 is composed of two serial relays, and as long as one of the two relays is disconnected, the physical link of the rf output signal can be disconnected, and control manners of the two relays are in a loop, so that the manual control unit 12 and the safety protection logic determination unit 11 can simultaneously control the two relays. The radio frequency output protection switch unit 8 is in a normally open state to ensure high reliability of the radio frequency output protection switch unit 8.
The utility model discloses a radio frequency ablation system has the safety protection function. The function is realized by a safety protection logic judgment unit 11, a radio frequency output protection switch unit 8 and a manual control unit 12. The safety protection logic judgment unit 11 collects relevant fault information of failure of the microprocessor 1, 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 1 failure occurs, the safety protection logic judgment unit 11 sends a radio frequency output closing instruction to the radio frequency output protection switch unit 8, and the radio frequency output protection switch unit 8 closes a relay thereof to cut off a radio frequency energy output link. If the microprocessor 1 has a crash fault, a failure signal of the microprocessor 1 is sent to the safety protection logic judgment unit 11, after the safety protection logic judgment unit 11 performs one-out-of-three logic judgment, a radio frequency output closing instruction is sent to the radio frequency output protection switch unit 8, the radio frequency output protection switch unit 8 closes a relay thereof 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 2. When an operator finds an abnormal fault or an emergency, the operator presses an operation button of the manual control unit 12 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 utility model discloses a radio frequency ablation system has the output function of start-up radio frequency. 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 13 is started, radio frequency output is carried out, the radio frequency output is output according to the temperature and treatment time which are designed in advance by the system, meanwhile, a microprocessor 1 collects human body impedance at a focus through a human body impedance collecting unit 5, the microprocessor 1 collects the focus temperature at the electrode through an electrode temperature collecting unit 4, 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 position, when the conditions are met, the system automatically stops output, and therapy stopping information is prompted through an information display alarm unit 2 to finish treatment.
The utility model discloses a radio frequency ablation system still has the 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.
Claims (10)
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 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 protection 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 the 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 the 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 the 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 the electrode temperature acquisition unit fails, 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 the 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 failure mode of the safety protection logic judgment unit, the safety protection logic judgment unit and the self-diagnosis unit establish a self-diagnosis mode, if the fault occurs, the self-diagnosis unit automatically identifies and sends a fault signal to the microprocessor, and then the information display alarm unit outputs the fault information of the safety protection logic judgment 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.
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| CN110537971A (en) * | 2019-09-24 | 2019-12-06 | 埃文斯科技（北京）有限公司 | High-safety radio frequency ablation system |
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