Radio frequency ablation system

Abstract

The utility model relates to a radio frequency ablation system which comprises a radio frequency ablation instrument, an ablation catheter, a current detection device and a perfusion pump, an electrode is arranged on the ablation catheter, cold saline water is output into the ablation catheter through the perfusion pump, the temperature of the electrode of the ablation catheter can be effectively reduced, and the ablation effect is improved. Further, the risk of thrombus and pericardial tamponade can be effectively reduced; besides, a current signal of radio frequency energy output when the radio frequency ablation instrument is in a working state is collected in real time through a current detection device, so that a perfusion pump can switch a perfusion mode according to the received current signal to adjust the flow velocity of output cold saline water; therefore, an operator does not need to manually switch the perfusion state of the perfusion pump according to the state of the radiofrequency ablation instrument, and the surgical risk can be further effectively reduced.

Description

Technical Field

[0001] The present application belongs to the field of medical device technology, and in particular, relates to a radiofrequency ablation system. Background Art

[0002] At present, when treating tachyarrhythmia, an ablation catheter connected to a radiofrequency ablation device is generally used to ablate the diseased tissue. The principle of radiofrequency ablation is: inserting the ablation catheter into the lesion site forms a current loop, and outputting energy through the electrode of the ablation catheter to cause the diseased tissue to oscillate and heat up. When the temperature of the diseased tissue exceeds 60°C for 3-4 minutes, the diseased tissue will undergo irreversible necrosis, thereby achieving the purpose of ablation. However, while ablating the diseased tissue through the ablation catheter, the temperature of the electrode of the ablation catheter will continue to rise, resulting in excessive temperature on the surface of the tissue, causing eschar and thrombus formation, and if it continues, it will cause cardiac perforation and pericardial tamponade. Summary of the invention

[0003] The purpose of the present application is to provide a radiofrequency ablation system; the radiofrequency ablation system provided by the present application can effectively reduce the temperature of the electrode of the ablation catheter, thereby effectively reducing the risk of thrombosis and pericardial tamponade. In addition, the operator does not need to manually switch the perfusion state of the perfusion pump according to the state of the radiofrequency ablation instrument, thereby further effectively reducing the surgical risk.

[0004] The technical solutions provided by this application are as follows:

[0005] A radiofrequency ablation system comprises: a radiofrequency ablation instrument, an ablation catheter, a current detection device and an irrigation pump, wherein the ablation catheter is provided with electrodes;

[0006] The radiofrequency ablation device is electrically connected to the first end of the current detection device;

[0007] The second end of the current detection device is electrically connected to the electrode on the ablation catheter;

[0008] The third end of the current detection device is in communication connection with the perfusion pump;

[0009] The irrigation pump is in communication with the ablation catheter;

[0010] The radiofrequency ablation device is used to receive ablation operation instructions and output radiofrequency energy based on the received ablation operation instructions;

[0011] The current detection device is used to detect the current of the radio frequency energy and send the detected current signal to the perfusion pump;

[0012] The irrigation pump is used to output cold saline to the ablation catheter based on the received working mode instruction, and switch the irrigation mode based on the received current signal to adjust the flow rate of the output cold saline.

[0013] Optionally, the current detection device is a current transformer.

[0014] Optionally, the radiofrequency ablation device is provided with a back plate interface;

[0015] The first end of the current detection device is electrically connected to the back plate interface through a first electrical connection line;

[0016] The second end of the current detection device is electrically connected to the electrode on the ablation catheter through a second electrical connection line.

[0017] Optionally, the perfusion pump is provided with a signal interface;

[0018] The third end of the current detection device is communicatively connected to the signal interface via a signal transmission line.

[0019] Optionally, the working mode instruction includes a first working mode instruction and a second working mode instruction, and the perfusion mode includes a first flow rate perfusion mode and a second flow rate perfusion mode;

[0020] The irrigation pump is specifically used to output cold saline to the ablation catheter according to a first flow rate irrigation mode based on the received first working mode instruction, and switch to a second flow rate irrigation mode after receiving a current signal.

[0021] Optionally, the flow rate at which the perfusion pump outputs cold saline in the first flow rate perfusion mode is 1-5 ml / min, and the flow rate at which the perfusion pump outputs cold saline in the second flow rate perfusion mode is 6-40 ml / min.

[0022] Optionally, the radiofrequency ablation apparatus is provided with a first panel;

[0023] The first panel is used for receiving ablation operation instructions.

[0024] Optionally, a second panel is provided on the perfusion pump;

[0025] The second panel is used to receive a working mode instruction.

[0026] Optionally, the electrode is arranged at the first end of the ablation catheter, the irrigation pump is connected to the second end of the ablation catheter, a cold saline channel is arranged in the ablation catheter, and a through hole is arranged on the electrode.

[0027] Compared with the prior art, the present application provides a radiofrequency ablation system, comprising: a radiofrequency ablation instrument, an ablation catheter, a current detection device and an irrigation pump, wherein the ablation catheter is provided with an electrode; the radiofrequency ablation instrument is electrically connected to a first end of the current detection device; the second end of the current detection device is electrically connected to the electrode on the ablation catheter; the third end of the current detection device is communicatively connected to the irrigation pump; the irrigation pump is connected to the ablation catheter; the radiofrequency ablation instrument is used to receive ablation operation instructions and output radiofrequency energy based on the received ablation operation instructions; the current detection device is used to detect the current of the radiofrequency energy and send the detected current signal to the irrigation pump; the irrigation pump is used to output based on the received working mode instructions Cold saline is output to the ablation catheter, and based on the received current signal, the perfusion mode is switched to adjust the flow rate of the output cold saline. In the present application, the temperature of the electrode of the ablation catheter can be effectively reduced by outputting cold saline into the ablation catheter through the perfusion pump, thereby effectively reducing the risk of thrombosis and pericardial tamponade. In addition, the current signal of the radio frequency energy output by the radio frequency ablation instrument when it is in working state is collected in real time by the current detection device, so that the perfusion pump can switch the perfusion mode according to the received current signal to adjust the flow rate of the output cold saline, so that the operator does not need to manually switch the perfusion state of the perfusion pump according to the state of the radio frequency ablation instrument, thereby further effectively reducing the risk of surgery. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0029] Figure 1 A schematic diagram of the structure of a radiofrequency ablation system disclosed in an embodiment of the present application;

[0030] Figure 2 A schematic diagram of the structure of another radiofrequency ablation system disclosed in an embodiment of the present application;

[0031] Reference numerals: 100 - radiofrequency ablation device; 200 - ablation catheter; 300 - current detection device; 400 - irrigation pump; 500 - first electrical connection line; 600 - second electrical connection line; 700 - signal transmission line;

[0032] 110 - back plate interface; 210 - electrode; 410 - signal interface. DETAILED DESCRIPTION

[0033] In order to enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the described embodiments are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0034] It should be noted that when an element is referred to as being "fixed on" or "set on" another element, it can be directly on the other element or indirectly set on the other element; when an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0035] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0036] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "multiple" and "several" mean two or more, unless otherwise clearly and specifically defined.

[0037] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which this application can be implemented. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in this application without affecting the effects and purposes that can be achieved by this application.

[0038] like Figure 1As shown, an embodiment of the present application provides a radiofrequency ablation system, including: a radiofrequency ablation instrument 100, an ablation catheter 200, a current detection device 300 and an irrigation pump 400, wherein the ablation catheter 200 is provided with an electrode 210; the radiofrequency ablation instrument 100 is electrically connected to a first end of the current detection device 300; the second end of the current detection device 300 is electrically connected to the electrode 210 on the ablation catheter 200; the third end of the current detection device 300 is communicatively connected to the irrigation pump 400; the irrigation pump 400 is connected to the ablation catheter 200; the radiofrequency ablation instrument 100 is used to receive ablation operation instructions and output radiofrequency energy based on the received ablation operation instructions; the current detection device 300 is used to detect the current of the radiofrequency energy and send the detected current signal to the irrigation pump 400; the irrigation pump 400 is used to output cold saline to the ablation catheter 200 based on the received working mode instructions, and switch the irrigation mode based on the received current signal to adjust the flow rate of the output cold saline.

[0039] In this embodiment, after starting the operation, the radiofrequency ablation device 100 can be turned on first, so that the radiofrequency ablation device 100 is in a standby state, and then the perfusion pump 400 can be started to work. Specifically, the first working mode instruction can be sent to the perfusion pump 400 through the button on the panel of the perfusion pump 400. After receiving the first working mode instruction, the perfusion pump 400 starts working and works in a low flow rate perfusion mode. Then, by sending an ablation operation instruction to the radiofrequency ablation device 100, the radiofrequency ablation device 100 receives the ablation operation instruction and outputs radiofrequency energy to the electrode 210 on the ablation catheter 200 based on the received ablation operation instruction. At this time, the radiofrequency ablation device 100 is in a working state of outputting radiofrequency energy, and the current detection device 300 detects the output of the radiofrequency ablation device 100 in real time. The current of the RF energy is detected, and the detected current signal is sent to the perfusion pump 400. The perfusion pump 400 receives the current signal sent by the current detection device 300, and based on the received current signal, switches to the high-flow perfusion mode to increase the flow rate of the output cold saline. When the RF ablation device 100 is in the standby state again, the current detection device 300 does not detect the RF energy output by the RF ablation device 100, and does not send a current signal to the perfusion pump 400. When the perfusion pump 400 does not receive the current signal, the perfusion pump 400 switches to the low-flow perfusion mode to reduce the flow rate of the output cold saline, so that the perfusion pump 400 can switch the perfusion state according to the state of the RF ablation device 100, so that the cold saline has a better cooling effect on the electrode 210 of the ablation catheter 200.

[0040] In this embodiment, the radiofrequency ablation system may further include a controller, which is not shown in the accompanying drawings. The current detection device 300 sends the detected current signal to the controller. After receiving the current signal sent by the current detection device 300, the controller sends a first control signal to the perfusion pump 400, or, in order to reduce the interference of noise signals, when the received current signal is greater than or equal to a preset current signal, the controller sends a first control signal to the perfusion pump 400. After receiving the first control signal, the perfusion pump 400 switches to a high-flow rate perfusion mode to increase the flow rate of the output cold saline. When the controller does not receive the current signal sent by the current detection device 300, or the controller does not receive the current signal sent by the current detection device 300 within a preset time period, the controller sends a second control signal to the perfusion pump 400. After receiving the second control signal, the perfusion pump 400 switches to a low-flow rate perfusion mode to reduce the flow rate of the output cold saline.

[0041] In this embodiment, the current detection device 300 may be a current transformer or a current sensor. A refrigeration component may also be provided in the perfusion pump 400, and the refrigeration component is used to refrigerate the cold brine according to a set temperature, and the refrigeration component is not shown in the drawings.

[0042] Compared with the prior art, the present application provides a radiofrequency ablation system, comprising: a radiofrequency ablation instrument 100, an ablation catheter 200, a current detection device 300 and an irrigation pump 400, wherein the ablation catheter 200 is provided with an electrode 210; the radiofrequency ablation instrument 100 is electrically connected to a first end of the current detection device 300; a second end of the current detection device 300 is electrically connected to the electrode 210 on the ablation catheter 200; a third end of the current detection device 300 is communicatively connected to the irrigation pump 400; the irrigation pump 400 is communicated with the ablation catheter 200; the radiofrequency ablation instrument 100 is used to receive an ablation operation instruction and output radiofrequency energy based on the received ablation operation instruction; the current detection device 300 is used to detect the current of the radiofrequency energy and send the detected current signal to the irrigation pump 400; the irrigation pump 400 is used to In response to the received working mode instruction, cold saline is output to the ablation catheter 200, and based on the received current signal, the perfusion mode is switched to adjust the flow rate of the output cold saline. In the present application, the cold saline is output to the ablation catheter 200 by the perfusion pump 400, which can effectively reduce the temperature of the electrode 210 of the ablation catheter 200, thereby effectively reducing the risk of thrombosis and pericardial tamponade; in addition, the current detection device 300 collects the current signal of the radio frequency energy output when the radio frequency ablation device 100 is in a working state in real time, so that the perfusion pump 400 can switch the perfusion mode according to the received current signal to adjust the flow rate of the output cold saline, so that the operator does not need to manually switch the perfusion state of the perfusion pump 400 according to the state of the radio frequency ablation device 100, thereby further effectively reducing the surgical risk.

[0043] As an implementation mode, in the embodiment of the present application, the current detection device 300 is a current transformer.

[0044] In this embodiment, the current transformer is an instrument that converts a large primary current into a small secondary current for measurement based on the principle of electromagnetic induction. The current transformer is composed of a closed iron core and a winding. The primary winding of the current transformer has very few turns and is generally connected in series in the circuit of the current to be measured.

[0045] like Figure 2 As shown, as an implementation mode, in the embodiment of the present application, a back plate interface 110 is provided on the radio frequency ablation device 100; the first end of the current detection device 300 is electrically connected to the back plate interface 110 through a first electrical connection line 500; the second end of the current detection device 300 is electrically connected to the electrode 210 on the ablation catheter 200 through a second electrical connection line 600.

[0046] In this embodiment, a radio frequency energy generation module can be provided in the radio frequency ablation device 100. The radio frequency energy generation module outputs radio frequency energy through the back plate interface 110 according to the ablation operation instruction, and then outputs it to the first end of the current detection device 300 through the first electrical connection line 500. The first end of the current detection device 300 outputs the radio frequency energy through the second electrical connection line 600 to the electrode 210 on the ablation catheter 200.

[0047] like Figure 2 As shown, as an implementation mode, in the embodiment of the present application, a signal interface 410 is provided on the perfusion pump 400; the third end of the current detection device 300 is communicatively connected with the signal interface 410 via a signal transmission line 700.

[0048] In this embodiment, the third terminal of the current detection device 300 outputs the detected current signal to the signal interface 410 of the perfusion pump 400 through the signal transmission line 700 .

[0049] In this embodiment, the current detection device 300 may also communicate with the perfusion pump 400 in a wireless manner, and the wireless manner may be Bluetooth, radio frequency, infrared communication, etc.

[0050] In this embodiment, if the radiofrequency ablation system includes a controller, the controller and the current detection device 300 and the irrigation pump 400 may communicate in a wired manner or in a wireless manner.

[0051] As an implementation mode, in an embodiment of the present application, the working mode instruction includes a first working mode instruction and a second working mode instruction, and the perfusion mode includes a first flow rate perfusion mode and a second flow rate perfusion mode; the perfusion pump 400 is specifically used to output cold saline to the ablation catheter 200 according to the first flow rate perfusion mode based on the received first working mode instruction, and switch to the second flow rate perfusion mode after receiving the current signal.

[0052] In this embodiment, the first flow rate perfusion mode can be a low flow rate perfusion mode, and the second flow rate perfusion mode can be a high flow rate perfusion mode. After the perfusion pump 400 receives the first working mode instruction, it outputs cold saline to the ablation catheter 200 according to the first flow rate perfusion mode. After receiving the current signal sent by the current detection device 300, the perfusion pump 400 switches to the second flow rate perfusion mode to increase the flow rate of the output cold saline. When the current signal sent by the current detection device 300 is not received, the perfusion pump 400 switches to the first flow rate perfusion mode to reduce the flow rate of the output cold saline.

[0053] As an implementation mode, in the embodiment of the present application, the flow rate at which the perfusion pump 400 outputs cold saline in the first flow rate perfusion mode is 1-5 ml / min, and the flow rate at which the perfusion pump 400 outputs cold saline in the second flow rate perfusion mode is 6-40 ml / min.

[0054] In this embodiment, the specific flow rate at which the perfusion pump 400 outputs cold saline in the first flow rate perfusion mode and the specific flow rate at which the perfusion pump 400 outputs cold saline in the second flow rate perfusion mode can be set as needed. For example, the specific flow rate at which the perfusion pump 400 outputs cold saline in the first flow rate perfusion mode can be set to 3 ml / min, and the specific flow rate at which the perfusion pump 400 outputs cold saline in the second flow rate perfusion mode can be set to 30 ml / min.

[0055] As an implementation manner, in the embodiment of the present application, a first panel is provided on the radiofrequency ablation device 100; the first panel is used to receive ablation operation instructions.

[0056] In this embodiment, the first panel is not shown in the accompanying drawings. The first panel may be a human-computer interaction panel. The operator may input ablation operation instructions by manually clicking buttons on the first panel. The first panel receives the ablation operation instructions and sends the received ablation operation instructions to the radio frequency energy generation module.

[0057] As an implementation mode, in the embodiment of the present application, a second panel is provided on the infusion pump 400; the second panel is used to receive working mode instructions.

[0058] In this embodiment, the second panel is not shown in the drawings. The second panel may be a human-computer interaction panel, and the operator may input the working mode instruction by manually clicking the button on the second panel.

[0059] like Figure 2 As shown, as an implementation mode, in the embodiment of the present application, the electrode 210 is arranged at the first end of the ablation catheter 200, the irrigation pump 400 is connected to the second end of the ablation catheter 200, a cold saline channel is arranged in the ablation catheter 200, and a through hole is arranged on the electrode 210.

[0060] In this embodiment, the cold saline channel and the through hole are not shown in the accompanying drawings; the cold saline input into the second end of the ablation catheter 200 is transported to the through hole on the electrode 210 through the cold saline channel, and is sprayed from the through hole on the electrode 210 to the diseased tissue and nearby tissues, so as to achieve the purpose of anti-inflammation of the diseased tissue and nearby tissues.

[0061] It should be understood that the use of "system", "device", "unit" and / or "module" in this application is only a method for distinguishing different components, elements, parts, parts or assemblies at different levels. However, if other words can achieve the same purpose, the word can be replaced by other expressions.

[0062] The embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referenced to each other.

[0063] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A radiofrequency ablation system, characterized in that: include: A radiofrequency ablation instrument, an ablation catheter, a current detection device and an infusion pump, wherein the ablation catheter is provided with electrodes; The radiofrequency ablation device is electrically connected to the first end of the current detection device; The second end of the current detection device is electrically connected to the electrode on the ablation catheter; The third end of the current detection device is in communication connection with the perfusion pump; The irrigation pump is in communication with the ablation catheter; The radiofrequency ablation device is used to receive ablation operation instructions and output radiofrequency energy based on the received ablation operation instructions; The current detection device is used to detect the current of the radio frequency energy and send the detected current signal to the perfusion pump; The irrigation pump is used to output cold saline to the ablation catheter based on the received working mode instruction, and switch the irrigation mode based on the received current signal to adjust the flow rate of the output cold saline.

2. The radiofrequency ablation system according to claim 1, characterized in that: The current detection device is a current transformer.

3. The radiofrequency ablation system according to claim 2, characterized in that: The radiofrequency ablation instrument is provided with a back plate interface; The first end of the current detection device is electrically connected to the back plate interface through a first electrical connection line; The second end of the current detection device is electrically connected to the electrode on the ablation catheter through a second electrical connection line.

4. The radiofrequency ablation system according to claim 3, characterized in that: The perfusion pump is provided with a signal interface; The third end of the current detection device is communicatively connected to the signal interface via a signal transmission line.

5. The radiofrequency ablation system according to claim 1, characterized in that: The working mode instruction includes a first working mode instruction and a second working mode instruction, and the perfusion mode includes a first flow rate perfusion mode and a second flow rate perfusion mode; The irrigation pump is specifically used to output cold saline to the ablation catheter according to a first flow rate irrigation mode based on the received first working mode instruction, and switch to a second flow rate irrigation mode after receiving a current signal.

6. The radiofrequency ablation system according to claim 5, characterized in that: The flow rate at which the perfusion pump outputs cold saline in the first flow rate perfusion mode is 1-5 ml / min, and the flow rate at which the perfusion pump outputs cold saline in the second flow rate perfusion mode is 6-40 ml / min.

7. The radiofrequency ablation system according to any one of claims 1 to 6, characterized in that: The radiofrequency ablation apparatus is provided with a first panel; The first panel is used for receiving ablation operation instructions.

8. The radiofrequency ablation system according to any one of claims 1 to 6, characterized in that: The perfusion pump is provided with a second panel; The second panel is used to receive a working mode instruction.

9. The radiofrequency ablation system according to claim 1, characterized in that: The electrode is arranged at the first end of the ablation catheter, the irrigation pump is communicated with the second end of the ablation catheter, a cold saline channel is arranged in the ablation catheter, and a through hole is arranged on the electrode.

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