Radiofrequency ablation system and method

Abstract

The present application provides a radiofrequency ablation system and method, which includes a display screen for responding to user control operations on a human-computer interaction interface and generating control instructions; a main control module for outputting a first output power signal according to the control instruction; and controlling a switching circuit to connect to an electrode needle according to a matching working mode according to the control instruction; a radiofrequency power amplifier for amplifying the first output power signal and sending the amplified first output power signal to the switching circuit; a switching circuit for connecting to the electrode needle according to a matching working mode and providing the amplified first output power signal to the electrode needle, so that the electrode in the electrode needle connected to the switching circuit works based on the first output power signal; the present application provides a single-needle, multi-pole, and multi-working mode radiofrequency ablation system, which uses different radiofrequency powers for treatment of areas to be diagnosed with different impedance values, thereby improving the treatment effect.

Description

Technical Field

[0001] The present application relates to the technical field of radiofrequency ablation, and in particular, to a radiofrequency ablation system and method. Background Art

[0002] Radiofrequency ablation is a treatment method that uses radiofrequency current to kill tumors locally. During treatment, under the guidance of CT and ultrasound, the radiofrequency electrode needle is directly punctured into the tumor tissue percutaneously. The radiofrequency waves emitted by the radiofrequency electrode needle cause the polar molecules of the tumor tissue to oscillate at high speed. The heat generated by the friction and collision of adjacent molecules causes the local temperature of the treatment area to reach 90-100°C or even exceed 100°C within a few minutes. Tumor cells have significantly lower tolerance to heat than normal cells. Tumor cells can be effectively and quickly removed at temperatures above 42°C, causing them to undergo thermal coagulation necrosis. Radiofrequency ablation can also coagulate the blood vessels of tumor tissue, which is beneficial for preventing tumor metastasis.

[0003] Depending on the severity of the disease, the size of the area that needs radiofrequency ablation for soft tissue tumors varies. When the area to be treated is large, different areas require different radiofrequency ablation intensities. For treatment areas that require different radiofrequency ablation intensities, existing radiofrequency ablation devices can no longer provide effective treatment. Summary of the invention

[0004] In view of this, the purpose of the present application is to provide a radiofrequency ablation system and method, to provide a single-needle multi-pole multi-working mode radiofrequency ablation system, which uses different radiofrequency powers to treat areas to be diagnosed with different impedance values, thereby improving the treatment effect.

[0005] In a first aspect, an embodiment of the present application provides a radiofrequency ablation system, the system comprising a main control module, a radiofrequency power amplifier, a switching circuit, an electrode needle and a display screen; the radiofrequency power amplifier, the switching circuit and the display screen are electrically connected to the main control module respectively, and the switching circuit is also electrically connected to the radiofrequency power amplifier and the electrode needle; the display screen is used to provide a human-computer interaction interface;

[0006] The display screen is used to respond to the user's control operation on the human-computer interaction interface, generate a control instruction and send it to the main control module; wherein the control instruction carries preset output power information and working mode information;

[0007] The main control module is used to output a first output power signal corresponding to the output power information according to the output power information carried by the control instruction, and send the first output power signal to the radio frequency power amplifier; and, according to the working mode information carried by the control instruction, control the switching circuit to connect with the electrode needle according to a matching working mode; wherein, in different working modes, the number of electrodes connected by the switching circuit is different;

[0008] The RF power amplifier is used to amplify the first output power signal and send the amplified first output power signal to the switching circuit;

[0009] The switching circuit is used to connect to the electrode needle according to a matching working mode and provide the amplified first output power signal to the electrode needle, so that the electrode in the electrode needle connected to the switching circuit works based on the first output power signal.

[0010] In a preferred technical solution of the present application, the electrode needle comprises two electrodes, namely a first electrode and a second electrode;

[0011] The working modes of the electrode needle include: monopolar working mode, bipolar working mode and mixed working mode;

[0012] The monopolar working mode is that the first electrode or the second electrode works alone;

[0013] The bipolar working mode is that the first electrode and the second electrode work together;

[0014] The mixed working mode is an alternation of the unipolar working mode and the bipolar working mode.

[0015] In a preferred technical solution of the present application, the above-mentioned electrode needle includes: a first electrode, a second electrode, and a back electrode plate; the first electrode, the second electrode, and the back electrode plate are all electrically connected, and current can flow from the first electrode to the back electrode plate, current can flow from the second electrode to the back electrode plate, and current can flow between the first electrode and the second electrode.

[0016] In a preferred technical solution of the present application, the main control module is also used to record the working time of the electrode needle;

[0017] The main control module is further used to output a second output power signal corresponding to the working time of the electrode needle according to the working time of the electrode needle, and send the second output power signal to the radio frequency power amplifier;

[0018] The radio frequency power amplifier is further used to amplify the second output power signal and send the amplified second output power signal to the switching circuit.

[0019] In a preferred technical solution of the present application, the main control module, when used to output a second output power signal corresponding to the working time of the electrode needle according to the working time of the electrode needle, includes:

[0020] When the working time of the electrode needle is greater than or equal to the preset time, the main control module increases the first output power signal and outputs the increased first output power signal; the increased first output power signal serves as the second output power signal.

[0021] In a preferred technical solution of the present application, the main control module, when used to output a second output power signal corresponding to the working time of the electrode needle according to the working time of the electrode needle, includes:

[0022] When the working time of the electrode needle is less than the preset time, the main control module continues to output the first output power signal as the second output power signal.

[0023] In a preferred technical solution of the present application, the above-mentioned radio frequency power amplifier includes an impedance detection module;

[0024] The radio frequency power amplifier is also used to detect the impedance value of the electrode needle action area and send the impedance value to the main control module;

[0025] The main control module is further used to output a third output power signal corresponding to the impedance value according to the second output power signal and the received impedance value, and send the third output power signal to the RF power amplifier;

[0026] The radio frequency power amplifier is further used to amplify the third output power signal and send the amplified third output power signal to the switching circuit.

[0027] In a preferred technical solution of the present application, the above system further includes a power module;

[0028] The power supply module is used to provide power to the main control module, the radio frequency power amplifier, the switching circuit, the electrode needles and the display screen.

[0029] In a second aspect, an embodiment of the present application provides a radiofrequency ablation method, which is applied to a radiofrequency ablation system, wherein the system includes a main control module, a radiofrequency power amplifier, a switching circuit, an electrode needle, and a display screen; the radiofrequency power amplifier, the switching circuit, and the display screen are electrically connected to the main control module, respectively, and the switching circuit is also electrically connected to the radiofrequency power amplifier and the electrode needle; the display screen is used to provide a human-computer interaction interface; the method includes:

[0030] The display screen generates a control instruction in response to the user's control operation on the human-computer interaction interface and sends it to the main control module; wherein the control instruction carries preset output power information and working mode information;

[0031] The main control module outputs a first output power signal corresponding to the output power information according to the output power information carried by the control instruction, and sends the first output power signal to the radio frequency power amplifier; and, according to the working mode information carried by the control instruction, controls the switching circuit to connect with the electrode needle according to a matching working mode; wherein, in different working modes, the number of electrodes connected by the switching circuit is different;

[0032] The RF power amplifier amplifies the first output power signal and sends the amplified first output power signal to the switching circuit;

[0033] The switching circuit is connected to the electrode needle according to a matching working mode, and provides the amplified first output power signal to the electrode needle, so that the electrode in the electrode needle connected to the switching circuit works based on the first output power signal.

[0034] In a preferred technical solution of the present application, the above method further includes:

[0035] The main control module outputs a second output power signal corresponding to the working time of the electrode needle according to the working time of the electrode needle, and sends the second output power signal to the radio frequency power amplifier;

[0036] The radio frequency power amplifier amplifies the second output power signal and sends the amplified second output power signal to the switching circuit.

[0037] The technical solution provided by the embodiments of the present application may have the following beneficial effects:

[0038] The radio frequency ablation system includes a main control module, a radio frequency power amplifier, a switching circuit, an electrode needle and a display screen; the radio frequency power amplifier, the switching circuit and the display screen are electrically connected to the main control module respectively, and the switching circuit is also electrically connected to the radio frequency power amplifier and the electrode needle; the display screen is used to provide a human-computer interaction interface; the display screen is used to respond to the user's control operation on the human-computer interaction interface, generate a control instruction and send it to the main control module; wherein the control instruction carries preset output power information and working mode information; the main control module is used to output a first output power signal corresponding to the output power information according to the output power information carried in the control instruction, and send the first output power signal to the radio frequency power amplifier; and The working mode information is controlled to control the switching circuit to connect with the electrode needle according to the matching working mode; wherein, under different working modes, the number of electrodes connected to the switching circuit is different; the radio frequency power amplifier is used to amplify the first output power signal and send the amplified first output power signal to the switching circuit; the switching circuit is used to connect with the electrode needle according to the matching working mode, and provide the amplified first output power signal to the electrode needle, so that the electrode in the electrode needle connected to the switching circuit works based on the first output power signal; the application provides a single-needle multi-pole multi-working mode radio frequency ablation system, which adopts different radio frequency powers for treatment of the diagnosed areas with different impedance values, thereby improving the treatment effect.

[0039] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, preferred embodiments are specifically cited below and described in detail with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0041] Figure 1 A schematic diagram of a radiofrequency ablation system provided in an embodiment of the present application is shown;

[0042] Figure 2 A schematic diagram of a radiofrequency ablation method provided in an embodiment of the present application is shown;

[0043] Figure 3 A schematic diagram of a first electrode and a second electrode provided in an embodiment of the present application is shown;

[0044] Figure 4 A schematic diagram of a back plate provided in an embodiment of the present application is shown;

[0045] Figure 5 A schematic diagram of adjusting the first output power signal provided in an embodiment of the present application. DETAILED DESCRIPTION

[0046] To make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. The components of the embodiments of the present application generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application claimed for protection, but merely represents the selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present application.

[0047] In order to achieve ablation of a larger area, the existing radiofrequency ablation methods usually use "umbrella-shaped" monopolar instruments, "Christmas tree-shaped" monopolar instruments or multiple bipolar instruments (each with one electrode). "Umbrella-shaped" or "Christmas tree-shaped" monopolar instruments require a large needle placement space in the tissue, and multiple bipolar instruments require multiple interventional wounds, so they cannot meet the needs of radiofrequency ablation in a small space. Moreover, the electrodes in the prior art are all manually set with fixed radiofrequency power, and the radiofrequency power cannot be adjusted according to the specific conditions of the area to be diagnosed, which can easily cause eschar and poor treatment effect.

[0048] Based on this, the present application provides a radiofrequency ablation system and method. Some implementation methods of the present application are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0049] Figure 1 It is shown that the embodiment of the present application provides a radiofrequency ablation system, which is described below through an embodiment.

[0050] The radiofrequency ablation system includes a main control module 3, a radiofrequency power amplifier 4, a switching circuit 5, an electrode needle 6 and a display screen 1; the radiofrequency power amplifier 4, the switching circuit 5 and the display screen 1 are electrically connected to the main control module 3 respectively, and the switching circuit 5 is also electrically connected to the radiofrequency power amplifier 4 and the electrode needle 6; the display screen 1 is used to provide a human-computer interaction interface;

[0051] The display screen 1 is used to respond to the user's control operation on the human-machine interaction interface, generate a control instruction and send it to the main control module 3; wherein the control instruction carries the preset output power information and working mode information;

[0052] The main control module 3 is used to output a first output power signal corresponding to the output power information according to the output power information carried by the control instruction, and send the first output power signal to the radio frequency power amplifier 4; and, according to the working mode information carried by the control instruction, control the switching circuit 5 to connect with the electrode needle 6 according to the matching working mode; wherein, in different working modes, the number of electrodes connected to the electrode needle 6 by the switching circuit 5 is different;

[0053] The radio frequency power amplifier 4 is used to amplify the first output power signal and send the amplified first output power signal to the switching circuit 5;

[0054] The switching circuit 5 is used to connect to the electrode needle 6 according to the matching working mode and provide the amplified first output power signal to the electrode needle 6, so that the electrode in the electrode needle 6 connected to the switching circuit 5 works based on the first output power signal.

[0055] In the embodiment of the present application, as an optional embodiment, the electrode needle 6 includes two electrodes, namely a first electrode 7 and a second electrode 8;

[0056] The working modes of the electrode needle 6 include: monopolar working mode, bipolar working mode and mixed working mode;

[0057] The monopolar working mode is that the first electrode 7 or the second electrode 8 works alone;

[0058] The bipolar working mode is that the first electrode 7 and the second electrode 8 work together;

[0059] The mixed working mode is the alternation of unipolar working mode and bipolar working mode.

[0060] In the embodiment of the present application, as an optional embodiment, Figure 3 , Figure 4 As shown, the electrode needle 6 includes: a first electrode 7, a second electrode 8, and a back electrode plate 9; the first electrode 7, the second electrode 8, and the back electrode plate 9 are all electrically connected, and the current can flow from the first electrode 7 to the back electrode plate 9, the current can flow from the second electrode 8 to the back electrode plate 9, and the current can flow between the first electrode 7 and the second electrode 8.

[0061] In the embodiment of the present application, as an optional embodiment, the main control module 3 is also used to record the working time of the electrode needle 6;

[0062] The main control module 3 is further used to output a second output power signal corresponding to the working time of the electrode needle 6 according to the working time of the electrode needle 6, and send the second output power signal to the radio frequency power amplifier 4;

[0063] The RF power amplifier 4 is further used to amplify the second output power signal and send the amplified second output power signal to the switching circuit 5 .

[0064] In the embodiment of the present application, as an optional embodiment, the main control module 3, when used to output a second output power signal corresponding to the working time of the electrode needle 6 according to the working time of the electrode needle 6, includes:

[0065] When the working time of the electrode needle 6 is greater than or equal to the preset time, the main control module 3 increases the first output power signal and outputs the increased first output power signal; the increased first output power signal serves as the second output power signal.

[0066] In the embodiment of the present application, as an optional embodiment, the main control module 3, when used to output a second output power signal corresponding to the working time of the electrode needle 6 according to the working time of the electrode needle 6, includes:

[0067] When the working time of the electrode needle 6 is less than the preset time, the main control module 3 continues to output the first output power signal as the second output power signal.

[0068] In the embodiment of the present application, as an optional embodiment, the RF power amplifier 4 includes an impedance detection module;

[0069] The radio frequency power amplifier 4 is also used to detect the impedance value of the action area of ​​the electrode needle 6 and send the impedance value to the main control module 3;

[0070] The main control module 3 is further used to output a third output power signal corresponding to the impedance value according to the second output power signal and the received impedance value, and send the third output power signal to the RF power amplifier 4;

[0071] The radio frequency power amplifier 4 is further used to amplify the third output power signal and send the amplified third output power signal to the switching circuit.

[0072] In the embodiment of the present application, as an optional embodiment, the above system further includes a power module 2;

[0073] The power module 2 is used to provide power to the main control module 3, the radio frequency power amplifier 4, the switching circuit 5, the electrode needles 6 and the display screen 1.

[0074] In an embodiment of the present application, as an optional embodiment, the user observes the working status of the system through the display screen 1 and inputs operation instructions through the display screen 1. The operation instructions here include first output power information for controlling the working intensity of the electrode needle 6 and working mode information for controlling the working status of the electrode needle 6.

[0075] The first output power is preset, and the magnitude of the first output power is determined according to the current application scenario, and may also be determined according to big data analysis.

[0076] The working mode is set accordingly according to the electrode needle 6. The electrode needle 6 in the present application includes: a first electrode 7, a second electrode 8, and a back plate 9; the first electrode 7, the second electrode 8, and the back plate 9 are all electrically connected, and the current can flow from the first electrode 7 to the back plate 9, the current can flow from the second electrode 8 to the back plate 9, and the current can flow between the first electrode 7 and the second electrode 8. According to the structure of the electrode needle 6 in the present application, the electrode needle 6 in the present application is provided with a monopolar working mode, a bipolar working mode, and a mixed working mode; the monopolar working mode is that the first electrode 7 or the second electrode 8 works alone; the bipolar working mode is that the first electrode 7 and the second electrode 8 work together; the mixed working mode is the alternation of the monopolar working mode and the bipolar working mode. That is, in the unipolar working mode, the current flows from the first electrode 7 to the back plate 9, or the current flows from the second electrode 8 to the back plate 9; in the bipolar working mode, the current flows between the first electrode 7 and the second electrode 8; in the mixed working mode, the current flows alternately between the first electrode 7 and the back plate 9, between the second electrode 8 and the back plate 9, and between the first electrode 7 and the second electrode 8.

[0077] After the user selects the first output power and the initial working mode, the main control module 3 controls the switching circuit 5 to connect with the electrode needle 6 in accordance with the matching working mode according to the selected initial working mode, that is, in the unipolar working mode, the switching circuit 5 connects the first electrode 7 and the back plate 9 or connects the second electrode 8 and the back plate 9. In specific implementation, the electrodes connected in the unipolar working mode can be determined according to the specific position of the electrode needle 6; in the bipolar working mode, the switching circuit 5 connects the first electrode 7 and the second electrode 8.

[0078] When the switching circuit 5 selects the working mode, the main control module 3 sends the first output power signal to the RF power amplifier 4 according to the selected first output power information. The RF power amplifier 4 amplifies the first output power signal and sends the amplified first output power signal to the switching circuit 5.

[0079] The switching circuit 5 controls the electrode corresponding to the electrode needle 6 to act on the to-be-diagnosed area with the power corresponding to the first output power signal according to the received working mode and the amplified first output power signal.

[0080] In order to prevent the electrode needle 6 from working at one power for a long time in the diagnosis area with different impedance values, which may cause eschar in the soft tissue, the main control module 3 is also used to record the working time of the electrode needle; the main control module 3 outputs a second output power signal corresponding to the working time of the electrode needle 6 according to the working time of the electrode needle; the RF power amplifier 4 of the present application is also provided with an impedance detection module, and the impedance detection module is used to detect the impedance value of the diagnosis area where the electrode needle 6 acts; the main control module 3 outputs a third output power signal corresponding to the impedance value according to the second output power signal and the received impedance value.

[0081] like Figure 5 As shown, when the working time of the electrode needle 6 is greater than or equal to the preset time, the main control module 3 increases the first output power signal, and uses the increased first output power signal as the second output power signal; then the relationship between the received impedance value and the preset threshold is determined; when the impedance value is greater than or equal to the preset threshold, the main control module 3 reduces the second output power signal, and outputs the reduced second output power signal; the reduced second output power signal is used as the third output power signal; when the impedance value is less than the preset threshold, the main control module 3 increases the second output power signal, and outputs the increased second output power signal; the increased second output power signal is used as the third output power signal;

[0082] When the working time of the electrode needle 6 is less than the preset time, the main control module 3 continues to output the first output power signal as the second output power signal; then the relationship between the received impedance value and the preset threshold is determined; when the impedance value is greater than or equal to the preset threshold, the main control module 3 reduces the second output power signal and outputs the reduced second output power signal; the reduced second output power signal is used as the third output power signal; when the impedance value is less than the preset threshold, the main control module 3 continues to output the second output power signal as the third output power signal;

[0083] The main control module 3 is also used to record the impedance detection times, which include the first times when the impedance value is greater than or equal to the preset threshold and the second times when the impedance value is less than the preset threshold.

[0084] After the electrode needle 6 works for a preset period of time with the third output power signal, the main control module 3 controls the working state of the electrode needle 6 according to the total working time of the electrode needle 6 and the number of impedance detections. The total working time of the electrode needle 6 includes the working time of the first output power signal of the electrode needle 6, the working time of the second output power signal, and the working time of the third output power signal.

[0085] When the total working time of the electrode needle 6 is greater than or equal to the preset total working time or the first time number is greater than or equal to the preset number threshold, the main control module 3 turns off the electrode needle 6;

[0086] When the total working time of the electrode needle 6 is less than the preset total working time and the first number is less than the preset number threshold, the impedance value continues to be detected.

[0087] In the present application, in the monopolar mode of the electrode needle 6, the ablation area is the tissue that can be ablated by the two monopoles; in the bipolar mode, the ablation area is the tissue between the two electrodes. As the two modes switch, the ablation areas in the two modes will overlap to form a larger ablation area. The electrode needle 6 of the present application adopts a single-needle bipolar, which is different from the single-needle monopolar or multi-needle multipolar of traditional equipment, thereby achieving the purpose of fewer wounds but forming a larger ablation area. The present application designs three output modes to cope with different tissue ablation needs: the monopolar mode ablates small areas, the bipolar mode ablates medium areas and the area is controllable, and the single-double mixed mode ablates large areas and the area is controllable. The present application changes the output power in real time according to the impedance value of the area to be diagnosed, which not only ensures the ablation effect, but also prevents the formation of eschar in the tissue.

[0088] Figure 2 A schematic flow chart of a radiofrequency ablation method provided in an embodiment of the present application is shown, wherein the method includes steps S101-S104; specifically:

[0089] A radiofrequency ablation method is applied to a radiofrequency ablation system, the system includes a main control module 3, a radiofrequency power amplifier 4, a switching circuit 5, an electrode needle 6 and a display screen 1; the radiofrequency power amplifier 4, the switching circuit 5 and the display screen 1 are electrically connected to the main control module 3 respectively, and the switching circuit 5 is also electrically connected to the radiofrequency power amplifier 4 and the electrode needle 6; the display screen 1 is used to provide a human-computer interaction interface; the method includes:

[0090] S101, the display screen 1 responds to the user's control operation on the human-computer interaction interface, generates a control instruction and sends it to the main control module 3; wherein the control instruction carries preset output power information and working mode information;

[0091] S102, the main control module 3 outputs a first output power signal corresponding to the output power information according to the output power information carried by the control instruction, and sends the first output power signal to the radio frequency power amplifier 4; and, according to the working mode information carried by the control instruction, controls the switching circuit 5 to connect with the electrode needle 6 according to the matching working mode; wherein, in different working modes, the number of electrodes connected to the electrode needle 6 by the switching circuit 5 is different;

[0092] S103, the RF power amplifier 4 amplifies the first output power signal, and sends the amplified first output power signal to the switching circuit 5;

[0093] S104, the switching circuit 5 is connected to the electrode needle 6 according to the matching working mode, and provides the amplified first output power signal to the electrode needle 6, so that the electrode in the electrode needle 6 connected to the switching circuit 5 works based on the first output power signal.

[0094] The method also includes:

[0095] The main control module 3 outputs a second output power signal corresponding to the working time of the electrode needle 6 according to the working time of the electrode needle, and sends the second output power signal to the radio frequency power amplifier;

[0096] The RF power amplifier 4 amplifies the second output power signal and sends the amplified second output power signal to the switching circuit;

[0097] The RF power amplifier 4 includes an impedance detection module; the method also includes:

[0098] The radio frequency power amplifier 4 detects the impedance value of the action area of ​​the electrode needle 6 and sends the impedance value to the main control module 3;

[0099] The main control module 3 outputs a third output power signal corresponding to the impedance value according to the third output power signal and the received impedance value, and sends the third output power signal to the RF power amplifier 4;

[0100] The RF power amplifier 4 amplifies the third output power signal, and sends the amplified third output power signal to the switching circuit 5 .

[0101] In the embodiments provided in the present application, it should be understood that the disclosed systems and methods can be implemented in other ways. The system embodiments described above are merely schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some communication interfaces, indirect coupling or communication connection of systems or units, which can be electrical, mechanical or other forms.

[0102] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0103] In addition, each functional unit in the embodiments provided in the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0104] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application can be essentially or partly embodied in the form of a software product that contributes to the prior art. The computer software product is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0105] It should be noted that similar numbers and letters represent similar items in the following figures. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description and are not to be understood as indicating or implying relative importance.

[0106] Finally, it should be noted that the above-described embodiments are only specific implementation methods of the present application, which are used to illustrate the technical solutions of the present application, rather than to limit them. The protection scope of the present application is not limited thereto. Although the present application is described in detail with reference to the above-mentioned embodiments, ordinary technicians in the field should understand that any technician familiar with the technical field can still modify the technical solutions recorded in the above-mentioned embodiments within the technical scope disclosed in the present application, or can easily think of changes, or make equivalent replacements for some of the technical features therein; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application. They should all be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A radiofrequency ablation system, characterized in that: The system comprises a main control module, a radio frequency power amplifier, a switching circuit, an electrode needle and a display screen; the radio frequency power amplifier, the switching circuit and the display screen are electrically connected to the main control module respectively, and the switching circuit is also electrically connected to the radio frequency power amplifier and the electrode needle; the display screen is used to provide a human-computer interaction interface; The display screen is used to respond to the user's control operation on the human-computer interaction interface, generate a control instruction and send it to the main control module; wherein the control instruction carries preset output power information and working mode information; The main control module is used to output a first output power signal corresponding to the output power information according to the output power information carried by the control instruction, and send the first output power signal to the radio frequency power amplifier; and, according to the working mode information carried by the control instruction, control the switching circuit to connect with the electrode needle according to a matching working mode; wherein, in different working modes, the number of electrodes connected by the switching circuit is different; The RF power amplifier is used to amplify the first output power signal and send the amplified first output power signal to the switching circuit; The switching circuit is used to connect with the electrode needles according to a matching working mode and provide the amplified first output power signal to the electrode needles, so that the electrode needles connected to the switching circuit among the electrode needles work based on the first output power signal; The main control module is also used to record the working time of the electrode needle; The main control module is further used to output a second output power signal corresponding to the working time of the electrode needle according to the working time of the electrode needle, and send the second output power signal to the radio frequency power amplifier; The RF power amplifier is further used to amplify the second output power signal and send the amplified second output power signal to the switching circuit; The radio frequency power amplifier includes an impedance detection module; The radio frequency power amplifier is also used to detect the impedance value of the electrode needle action area and send the impedance value to the main control module; The main control module is further used to output a third output power signal corresponding to the impedance value according to the second output power signal and the received impedance value, and send the third output power signal to the RF power amplifier; The radio frequency power amplifier is further used to amplify the third output power signal and send the amplified third output power signal to the switching circuit.

2. The system according to claim 1, characterized in that The electrode needle includes two electrodes, namely a first electrode and a second electrode; The working modes of the electrode needle include: monopolar working mode, bipolar working mode and mixed working mode; The monopolar working mode is that the first electrode or the second electrode works alone; The bipolar working mode is that the first electrode and the second electrode work together; The mixed working mode is an alternation of the unipolar working mode and the bipolar working mode.

3. The system according to claim 1, characterized in that The electrode needle includes: a first electrode, a second electrode, and a back electrode plate; the first electrode, the second electrode, and the back electrode plate are all electrically connected, and current can flow from the first electrode to the back electrode plate, current can flow from the second electrode to the back electrode plate, and current can flow between the first electrode and the second electrode.

4. The system according to claim 1, characterized in that The main control module, when used to output a second output power signal corresponding to the working time of the electrode needle according to the working time of the electrode needle, includes: When the working time of the electrode needle is greater than or equal to the preset time, the main control module increases the first output power signal and outputs the increased first output power signal; the increased first output power signal serves as the second output power signal.

5. The system according to claim 1, characterized in that The main control module, when used to output a second output power signal corresponding to the working time of the electrode needle according to the working time of the electrode needle, includes: When the working time of the electrode needle is less than the preset time, the main control module continues to output the first output power signal as the second output power signal.

6. The system according to claim 1, characterized in that The system also includes a power module; The power supply module is used to provide power to the main control module, the radio frequency power amplifier, the switching circuit, the electrode needles and the display screen.

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