CN117426860A - Radio frequency ablation control device - Google Patents

Radio frequency ablation control device Download PDF

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Publication number
CN117426860A
CN117426860A CN202210758463.9A CN202210758463A CN117426860A CN 117426860 A CN117426860 A CN 117426860A CN 202210758463 A CN202210758463 A CN 202210758463A CN 117426860 A CN117426860 A CN 117426860A
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power
output
time
radio frequency
pressure
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王赛
高洁琼
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Henan Hospital Traditional Chinese Medicine Second Affiliated Hospital of Henan University of Traditional Chinese Medicine TCM
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Henan Hospital Traditional Chinese Medicine Second Affiliated Hospital of Henan University of Traditional Chinese Medicine TCM
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/04Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
    • A61B18/12Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/04Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
    • A61B18/12Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
    • A61B18/14Probes or electrodes therefor
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B2018/00571Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for achieving a particular surgical effect
    • A61B2018/00577Ablation
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B2018/00636Sensing and controlling the application of energy
    • A61B2018/00696Controlled or regulated parameters
    • A61B2018/00702Power or energy
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B2018/00636Sensing and controlling the application of energy
    • A61B2018/00773Sensed parameters
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B2018/00636Sensing and controlling the application of energy
    • A61B2018/00773Sensed parameters
    • A61B2018/00779Power or energy
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B2018/00636Sensing and controlling the application of energy
    • A61B2018/00773Sensed parameters
    • A61B2018/00827Current
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B2018/00636Sensing and controlling the application of energy
    • A61B2018/00773Sensed parameters
    • A61B2018/00886Duration
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B2018/00636Sensing and controlling the application of energy
    • A61B2018/00773Sensed parameters
    • A61B2018/00892Voltage

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  • Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
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  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
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Abstract

The invention provides a radio frequency ablation control device, which belongs to the technical field of medical treatment and comprises: the time measuring device is responsible for measuring the operation time and transmitting the time to the control system; the control system is responsible for controlling the power output of the power output device, when the time is smaller than a first threshold value, controlling the power output device to output first power, when the time is larger than the first threshold value, controlling the power output device to output second power, when the time is larger than the second threshold value, controlling the power output device to output third power, and when the time is larger than the third threshold value, controlling the power output device to output fourth power; the power output device is responsible for outputting electric energy with specified power to the radio frequency ablation device according to the instruction of the control system, so that the operation efficiency is further improved, and the pain of a patient is reduced.

Description

Radio frequency ablation control device
Technical Field
The invention belongs to the technical field of medical treatment, and particularly relates to a radio frequency ablation control device.
Background
Radiofrequency ablation (Radiofrequency Ablation, RFA) is a representative technique for rapidly developing tumor interstitial thermal ablation in recent 30 years, and has the advantages of minimally invasive wound, high safety, simple operation method, definite curative effect and the like. The principle of radio frequency ablation treatment of tumor is that by using 450K-500KHz frequency current, through the electrode needle inserted into the tumor, the tissue ions around the electrode are oscillated, high-speed friction is used to generate Joule heat, the tissue temperature is up to 50-100 deg.C, so as to cause local tissue temperature rise to generate coagulation necrosis. Compared with normal cells, the tumor cells have the characteristics of cold resistance and heat resistance, so that normal tissues can be not damaged or damaged less.
In the 'multi-physical-field calculation and experimental study in radio frequency ablation renal sympathetic nerve removal operation' of the Shuoshi paper, an author Dong Tong respectively changes three key parameters of radio frequency power, ablation time and blood flow rate by establishing a renal artery bifurcation blood vessel model, the influence of power on an ablation temperature field is large, and when a power value is increased from 12V to 15V, the highest temperature is increased by about 7 ℃; when the power and the blood flow speed are certain, the temperature field changes slowly after the thermal balance is achieved along with the increase of the ablation time; when the power and the ablation time are fixed, the influence of the speed change of the flow field on the temperature field is small; the ablation time and the blood flow speed are changed, the highest temperature is changed by not more than 1 ℃, but the current radio frequency ablation device generally has a constant-power ablation mode, namely a two-medium mode and a constant-temperature ablation mode, but at the initial stage of ablation, the scab is not formed at the moment, the heat conduction efficiency is better, the scab is formed at the moment along with the increase of time, the heat conduction efficiency is obviously deteriorated, the temperature field change is gradually slowed down, if the same power or temperature is always adopted, the overall operation time is inevitably increased, the pain of a patient is aggravated, and the overall treatment effect is poor.
Therefore, there is a need to design a radio frequency ablation control device based on the above technical problems.
Disclosure of Invention
The invention aims to provide a radio frequency ablation control device.
In order to solve the above technical problems, the present invention provides a radio frequency ablation control device, including:
the system comprises a time measuring device, a power output device and a control system;
the time measuring device is responsible for measuring the operation time and transmitting the time to the control system;
the control system is in charge of controlling the power output of the power output device, when the time is smaller than a first threshold value, controlling the power output device to output first power, when the time is larger than the first threshold value, controlling the power output device to output second power, when the time is larger than a second threshold value, controlling the power output device to output third power, and when the time is larger than the third threshold value, controlling the power output device to output fourth power;
the power output device is responsible for outputting electric energy with specified power to the radio frequency ablation device according to the instruction of the control system.
The time measuring device is used for receiving the current signal of the radio frequency ablation device, and measuring time when the current signal appears.
When the radio frequency ablation device is not contacted with the affected part of the patient to be treated, only a voltage signal is generated at the moment, and no current signal exists, and the radio frequency ablation device is placed in a designated area, at the moment, due to the conductivity of human tissues in the designated area, current exists, so that the radio frequency ablation device can be positioned to start working through the judgment of the current, and the time counting becomes accurate.
A further embodiment consists in starting the time measuring device to measure the time when the duration of the current signal is greater than a fourth time threshold.
Due to the complexity of the human body, when the specified area has not been reached, other areas may be touched due to misoperation or the like, and a short current may occur at this time, so that by adopting the fourth time threshold, the problem of wrong timing due to misoperation is prevented.
The pressure measuring device is placed at the position of the electrode of the radio frequency ablation device and is responsible for measuring the pressure of the position of the electrode of the radio frequency ablation device, the pressure signal is filtered and then is judged by a signal judging circuit based on a voltage stabilizing tube, and when the pressure signal is larger than a first pressure threshold value, the time measuring device is started to measure time;
the signal judging circuit judges the amplitude of the pressure signal, so that the control system enables the power output device to output different powers;
by judging the pressure signal in a pure circuit mode, the time for starting the time measuring device is determined on the basis of not increasing the power consumption rate and more cost, and therefore the accuracy of the time measuring device is further improved.
A further technical solution is that the first power is smaller than the second power, the second power is smaller than the third power, the fourth power is smaller than the first power, and the first power, the second power, the third power and the fourth power are determined by expert scoring according to different patient parts.
Through adopting different power values to before the time is less than the third threshold value, output gradually becomes big, thereby makes holistic treatment time shorten greatly, adopts a less power at the initial stage, also can realize better effect this moment, improves gradually power along with the increase of time, after being greater than the third threshold value, has been close to the completion treatment this moment, only needs a less power to repair locally patient's formulation position, prevents that great power from leading to the secondary damage of formulation position, thereby has improved patient's use experience. The power required by the treatment of different parts is not nearly the same, and the power is determined by expert scoring, so that the overall treatment effect is further improved on the basis of ensuring the treatment quality.
A further technical solution consists in using different powers according to the difference of the pressure signals.
With the increase of time, the crusting degree of the appointed part of the patient gradually increases, the pressure signal of the patient also gradually increases, and the output power is improved when the pressure is increased through judging the pressure signal, so that the treatment effect is ensured, meanwhile, the power can be gradually improved more pertinently, the whole treatment time is greatly shortened, and the experience of the patient is also continuously improved.
The further technical scheme is that when the pressure signal is smaller than the first pressure threshold, the power output device is controlled to output fifth output power, when the pressure signal is larger than the first pressure threshold, the power output device is controlled to output sixth output power, when the pressure signal is larger than the second pressure threshold, the power output device is controlled to output seventh output power, and when the pressure signal is larger than the third pressure threshold and the time is larger than the fourth pressure threshold, the power output device is controlled to output eighth output power.
Different powers are output in stages through judging the pressure signal, so that the treatment time can be greatly reduced, when the pressure signal is larger than a third pressure threshold value, the seventh output power is used for a period of time, the treatment is basically completed at the moment, and when the time is larger than a fourth threshold value, the treatment effect is further improved by adopting smaller power for consolidation.
Further technical solutions are that the fifth output power is smaller than the sixth output power, the sixth output power is smaller than the seventh output power, and the eighth output power is smaller than the fifth output power.
A further technical solution is that the fifth output power, the sixth output power, the seventh output power, and the eighth output power are determined by expert scoring according to different treatment positions.
The further technical scheme is that the first threshold value and the second threshold value are corrected according to the change condition of the pressure signal for the same designated part.
When the pressure signal changes too quickly, the fact that the output power is too high at the moment is indicated, and the time of the first threshold value and the second threshold value can be further reduced at the moment, so that the whole treatment time is further shortened, and the use experience of a patient is improved.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and drawings.
In order to make the above objects, features and advantages of the present invention more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
The above and other features and advantages of the present invention will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings.
FIG. 1 is a schematic diagram of a radio frequency ablation control device in accordance with the present invention;
FIG. 2 is a flow chart of the output power variation with time according to the present invention;
FIG. 3 is a flow chart of the output power as a function of pressure according to the present invention;
FIG. 4 is a block diagram of a pressure measurement device according to the present invention;
fig. 5 is a schematic circuit diagram of the pressure measuring device of the present invention.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. However, the exemplary embodiments can be embodied in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus detailed descriptions thereof will be omitted.
The terms "a," "an," "the," and "said" are used to indicate the presence of one or more elements/components/etc.; the terms "comprising" and "having" are intended to be inclusive and mean that there may be additional elements/components/etc. in addition to the listed elements/components/etc.
Example 1
As shown in fig. 1, embodiment 1 provides a radio frequency ablation control device, including:
the system comprises a time measuring device, a power output device and a control system;
the time measuring device is responsible for measuring the operation time and transmitting the time to the control system;
the time measuring device is a device for measuring time by utilizing a specific principle, and can be any one of a stopwatch, an hourglass, a pocket watch, a self-swinging clock, a quartz clock, an atomic clock, an ultra-cold cesium atomic clock, a fragrance clock and the like.
The control system is in charge of controlling the power output of the power output device, when the time is smaller than a first threshold value, controlling the power output device to output first power, when the time is larger than the first threshold value, controlling the power output device to output second power, when the time is larger than a second threshold value, controlling the power output device to output third power, and when the time is larger than the third threshold value, controlling the power output device to output fourth power;
for example, if the first threshold is 2s, the second threshold is 5s, the third threshold is 8s, and when the first threshold is less than 2s, 5w is output, and when the first threshold is greater than 2s, 8w is output, and when the first threshold is greater than 5s, 10w is output, and when the second threshold is greater than 8s, 2w is output.
The power output device is responsible for outputting electric energy with specified power to the radio frequency ablation device according to the instruction of the control system.
In another possible embodiment, the time measurement device receives a current signal of the radio frequency ablation device, and measures time when the current signal is present.
For example, if the output voltage of the rf ablation device is 5V, when the patient is not released yet, no current will be generated in the off state, and when the patient reaches the affected part, a current of about 1A will be generated in the on state.
When the radio frequency ablation device is not contacted with the affected part of the patient to be treated, only a voltage signal is generated at the moment, and no current signal exists, and the radio frequency ablation device is placed in a designated area, at the moment, due to the conductivity of human tissues in the designated area, current exists, so that the radio frequency ablation device can be positioned to start working through the judgment of the current, and the time counting becomes accurate.
In a further possible embodiment, the time measuring device is turned on to measure the time when the current signal duration is greater than a fourth time threshold.
For example, when the duration is greater than 0.5s, the designated area has been reached at this time, and thus measurement of time is started.
Due to the complexity of the human body, when the specified area has not been reached, other areas may be touched due to misoperation or the like, and a short current may occur at this time, so that by adopting the fourth time threshold, the problem of wrong timing due to misoperation is prevented.
In another possible embodiment, the device further comprises a pressure measuring device, the pressure measuring device is placed at the position of the electrode of the radio frequency ablation device, the pressure measuring device is responsible for measuring the pressure of the position of the electrode of the radio frequency ablation device, the pressure signal is judged by a signal judging circuit based on a voltage stabilizing tube after being filtered, and when the pressure signal is larger than a first pressure threshold value, the time measuring device is started to measure time;
the signal judging circuit judges the amplitude of the pressure signal, so that the control system enables the power output device to output different powers;
as shown in fig. 5, the pressure sensor U1 is configured to detect a pressure signal at a position where an electrode of the radio frequency ablation device is located, and transmit the pressure signal to the operational amplifier U1B through the resistor R1 to amplify the pressure signal, so as to avoid that the amplitude of the pressure signal detected by the pressure sensor U1 is too small due to too small pressure, so that the signal judgment circuit cannot accurately judge the pressure signal, thereby improving the accuracy of the signal judgment circuit, the pressure signal amplified by the operational amplifier U1B filters an ac component in the pressure signal through the resistor R9, the capacitor C1 and the capacitor C3 to improve the accuracy of the pressure signal, and the triode Q1 then transmits the pressure signal to a signal judgment circuit through the resistor R12, where the signal judgment circuit is composed of the triode Q2, the switch S1, the diode D1, the voltage stabilizing tube D3, the relay K1, the relay K2, the switch S3, the non-gate U2D and the relay K3, when the amplitude of the pressure signal is lower, the triode Q2 cannot be conducted and is inverted into a pressure signal with high amplitude through the action of the switch S3 and the NOT gate U2D, the pressure signal is smaller than a first pressure threshold value, the pressure signal with high amplitude is output to the control system, the control system enables the power output device to output fifth output power, when the pressure signal conducts the triode Q2, the amplitude of the pressure signal is larger than the first pressure threshold value, the triode Q2 conducts the time measuring device through the resistor R10, the time measuring time begins to be measured, the triode Q2 conducts the relay K3 through the resistor R10, the relay K3 enables the switch S3 to be disconnected, the NOT gate U2D cannot work, the triode Q2 sends a first high level to the control system through the resistor R10 and the 1 pin and the 4 pin connected to the switch S2, when the pressure signal turns on the diode D1 through the closed switch S1, the control system indicates that the amplitude of the pressure signal is greater than the second pressure threshold, the diode D1 turns on the relay K2, the relay K2 disconnects the 1 pin and the 4 pin of the switch S2, so that the 2 pin and the 4 pin are connected, the pressure signal is transmitted to the control system through the 2 pin and the 4 pin of the switch S2, and the control system enables the power output device to output the sixth output power; when the pressure signal conducts the voltage stabilizing tube D3, the amplitude of the pressure signal is larger than the third pressure threshold value, the voltage stabilizing tube D3 conducts the relay K1, the relay K1 disconnects the pin 2 and the pin 4 of the switch S2, the pin 4 is connected with the pin 3 in turn, the pressure signal is transmitted to the control system through the pin 4 and the pin 3 of the switch S2, and the control system enables the power output device to output seventh output power.
The pressure measuring device is a device or a device which can sense pressure signals and convert the pressure signals into usable output electric signals according to a certain rule, and generally consists of a pressure sensitive element and a signal processing unit, and can be one or more of a gauge pressure sensor, a differential pressure sensor, an absolute pressure sensor and the like.
By judging the pressure signal in a pure circuit mode, the time for starting the time measuring device is determined on the basis of not increasing the power consumption rate and more cost, and therefore the accuracy of the time measuring device is further improved.
In a further possible embodiment, the first power is smaller than the second power, the second power is smaller than the third power, the fourth power is smaller than the first power, and the first, second, third, fourth powers are determined by expert scoring according to the differences of the patient sites.
For example, the first power is 5W, the second power is 8W, the third power is 10W, and the fourth power is 2W.
For example, if the first expert scores 6W for the first power and the second expert scores 4W for the first power, the first power is 3W.
Through adopting different power values to before the time is less than the third threshold value, output gradually becomes big, thereby makes holistic treatment time shorten greatly, adopts a less power at the initial stage, also can realize better effect this moment, improves gradually power along with the increase of time, after being greater than the third threshold value, has been close to the completion treatment this moment, only needs a less power to repair locally patient's formulation position, prevents that great power from leading to the secondary damage of formulation position, thereby has improved patient's use experience. The power required by the treatment of different parts is not nearly the same, and the power is determined by expert scoring, so that the overall treatment effect is further improved on the basis of ensuring the treatment quality.
In a further possible embodiment, different powers are used depending on the pressure signal.
With the increase of time, the crusting degree of the appointed part of the patient gradually increases, the pressure signal of the patient also gradually increases, and the output power is improved when the pressure is increased through judging the pressure signal, so that the treatment effect is ensured, meanwhile, the power can be gradually improved more pertinently, the whole treatment time is greatly shortened, and the experience of the patient is also continuously improved.
In a further possible embodiment, the power output device is controlled to output a fifth output power when the pressure signal is smaller than the first pressure threshold, the power output device is controlled to output a sixth output power when the pressure signal is larger than the first pressure threshold, the power output device is controlled to output a seventh output power when the pressure signal is larger than the second pressure threshold, and the power output device is controlled to output an eighth output power when the pressure signal is larger than the second pressure threshold and the time is larger than the fourth threshold.
For example, if the first pressure threshold is 0.5Pa, the second pressure threshold is 1Pa, and the fourth threshold is 2s, then 5W is output if the pressure is 0.5Pa or less, 8W is output if the pressure is 0.5Pa or more, 10W is output if the pressure is 1Pa or more, but the time is longer than 2s, and then 2W is output.
Different powers are output in stages through judging the pressure signal, so that the treatment time can be greatly reduced, when the pressure signal is larger than a third pressure threshold value, the seventh output power is used for a period of time, the treatment is basically completed at the moment, and when the time is larger than a fourth threshold value, the treatment effect is further improved by adopting smaller power for consolidation.
In a further possible embodiment, the fifth output power is smaller than the sixth output power, the sixth output power is smaller than the seventh output power, and the eighth output power is smaller than the fifth output power.
In a further possible embodiment, the fifth output power, the sixth output power, the seventh output power, the eighth output power are determined by expert scoring according to the treatment site.
In another possible embodiment, the first threshold value and the second threshold value are corrected according to the change condition of the pressure signal for the same designated portion.
For example, if the first threshold is 2s and the second threshold is 5s, the first threshold is corrected to 1.5s when the pressure is already greater than 1pa at 1.5s.
When the pressure signal changes too quickly, the fact that the output power is too high at the moment is indicated, and the time of the first threshold value and the second threshold value can be further reduced at the moment, so that the whole treatment time is further shortened, and the use experience of a patient is improved.
In the several embodiments provided in this application, it should be understood that the disclosed systems and methods may be implemented in other ways as well. The system embodiments described above are merely illustrative, for example, of the flowcharts and block diagrams in the figures that illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present invention. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
In addition, functional modules in the embodiments of the present invention may be integrated together to form a single part, or each module may exist alone, or two or more modules may be integrated to form a single part.
The functions, if implemented in the form of software functional modules and sold or used as a stand-alone product, may be stored on a computer readable storage medium. Based on this understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to perform all or part of the steps of the method of the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
With the above-described preferred embodiments according to the present invention as an illustration, the above-described descriptions can be used by persons skilled in the relevant art to make various changes and modifications without departing from the scope of the technical idea of the present invention. The technical scope of the present invention is not limited to the description, but must be determined according to the scope of claims.
In embodiments of the present invention, the term "plurality" refers to two or more, unless explicitly defined otherwise. The terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly attached, detachably attached, or integrally attached. The specific meaning of the above terms in the embodiments of the present invention will be understood by those of ordinary skill in the art according to specific circumstances.
In the description of the embodiments of the present invention, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience in describing the embodiments of the present invention and to simplify the description, and do not indicate or imply that the devices or units referred to must have a specific direction, be configured and operated in a specific direction, and thus should not be construed as limiting the embodiments of the present invention.
In the description of the present specification, the terms "one embodiment," "a preferred embodiment," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the embodiments of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above is only a preferred embodiment of the present invention and is not intended to limit the embodiment of the present invention, and various modifications and variations can be made to the embodiment of the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the embodiments of the present invention should be included in the protection scope of the embodiments of the present invention.

Claims (10)

1. A radio frequency ablation control device comprising:
the system comprises a time measuring device, a power output device and a control system;
the time measuring device is responsible for measuring the operation time and transmitting the time to the control system;
the control system is in charge of controlling the power output of the power output device, when the time is smaller than a first threshold value, controlling the power output device to output first power, when the time is larger than the first threshold value, controlling the power output device to output second power, when the time is larger than a second threshold value, controlling the power output device to output third power, and when the time is larger than the third threshold value, controlling the power output device to output fourth power;
the power output device is responsible for outputting electric energy with specified power to the radio frequency ablation device according to the instruction of the control system.
2. The radio frequency ablation control device of claim 1, wherein the time measurement device receives a current signal from the radio frequency ablation device and measures time when the current signal is present.
3. The radio frequency ablation control device of claim 2, wherein the time measurement device is turned on to measure time when the current signal duration is greater than a fourth time threshold.
4. The radio frequency ablation control device according to claim 1, further comprising a pressure measuring device, wherein the pressure measuring device is placed at the position of an electrode of the radio frequency ablation device and is responsible for measuring the pressure of the position of the electrode of the radio frequency ablation device, the pressure signal is filtered and then is judged by a signal judging circuit based on a voltage stabilizing tube, and when the pressure signal is larger than a first pressure threshold value, the time measuring device is started to measure time;
the signal judging circuit judges the amplitude of the pressure signal, so that the control system enables the power output device to output different powers.
5. The radio frequency ablation control device of claim 1, wherein the first power is less than the second power, the second power is less than the third power, the fourth power is less than the first power, and the first, second, third, and fourth powers are determined by expert scoring based on differences in patient sites.
6. The radio frequency ablation control device of claim 4, wherein different powers are used based on the pressure signal.
7. The rf ablation control device according to claim 6, wherein the power output device is controlled to output a fifth output power when the pressure signal is less than the first pressure threshold, wherein the power output device is controlled to output a sixth output power when the pressure signal is greater than the first pressure threshold, wherein the power output device is controlled to output a seventh output power when the pressure signal is greater than the second pressure threshold, and wherein the power output device is controlled to output an eighth output power when the pressure signal is greater than the third pressure threshold and the time is greater than the fourth pressure threshold.
8. The radio frequency ablation control device of claim 7, wherein the fifth output power is less than the sixth output power, the sixth output power is less than the seventh output power, and the eighth output power is less than the fifth output power.
9. The rf ablation control according to claim 8, wherein the fifth output power, the sixth output power, the seventh output power, and the eighth output power are determined by expert scoring based on treatment sites.
10. The radio frequency ablation control device of claim 9, wherein the first threshold and the second threshold are modified for the same designated location based on a change in the pressure signal.
CN202210758463.9A 2022-06-30 2022-06-30 Radio frequency ablation control device Pending CN117426860A (en)

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Publication number Priority date Publication date Assignee Title
CN1895183A (en) * 2005-07-12 2007-01-17 付洁宇 Multi-path radio-frequency smelting therapic equipment
CN101502442A (en) * 2008-02-05 2009-08-12 北京迈迪顶峰医疗科技有限公司 Radio frequency ablation system, ablation controller and radio frequency ablation device
CN108784829A (en) * 2017-05-05 2018-11-13 上海安通医疗科技有限公司 A kind of RF ablation device and RF ablation control method
CN110063785A (en) * 2018-01-23 2019-07-30 韦伯斯特生物官能(以色列)有限公司 It is melted using the power-controlled short duration of different temperatures limit value
CN111214288A (en) * 2019-12-24 2020-06-02 杭州诺诚医疗器械有限公司 Radio frequency ablation power output control method and device and radio frequency ablation system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1895183A (en) * 2005-07-12 2007-01-17 付洁宇 Multi-path radio-frequency smelting therapic equipment
CN101502442A (en) * 2008-02-05 2009-08-12 北京迈迪顶峰医疗科技有限公司 Radio frequency ablation system, ablation controller and radio frequency ablation device
CN108784829A (en) * 2017-05-05 2018-11-13 上海安通医疗科技有限公司 A kind of RF ablation device and RF ablation control method
CN110063785A (en) * 2018-01-23 2019-07-30 韦伯斯特生物官能(以色列)有限公司 It is melted using the power-controlled short duration of different temperatures limit value
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