Ablation method, ablation device and ablation equipment

Abstract

The invention discloses an ablation method, an ablation device and ablation equipment. The ablation equipment comprises a spherical catheter, a back polar plate and an energy connecting device, the spherical catheter comprises a catheter body and a spherical head end arranged on the catheter body, a plurality of electrodes are arranged at the spherical head end, the spherical head end is attached to human tissue needing to be ablated, and the back polar plate is attached to the surface of human skin. The energy connection device is used for connecting the spherical catheter to the first energy release device and providing ablation energy for the electrode on the spherical catheter through the first energy release device; and connecting the spherical catheter and the back polar plate to a second energy release device, and providing ablation energy for the electrode on the spherical catheter through the second energy release device. Thus, different ablation technologies can be flexibly switched according to different conditions, operation is convenient, and the good ablation effect can be achieved.

Description

Technical Field

[0001] The present application relates to the technical field of catheter ablation, and in particular to an ablation method, an ablation device and an ablation apparatus. Background Art

[0002] Catheter ablation is a common method for treating arrhythmias. It introduces energy into the heart through a catheter to ablate myocardial cells in specific areas and eliminate lesions. For example, radiofrequency ablation technology, pulsed field ablation (PFA) technology, etc. can be used for ablation.

[0003] However, different lesions and different locations require different ablation techniques, or even a combination of multiple ablation techniques. Currently, a method that can perform ablation flexibly is needed. Summary of the invention

[0004] The embodiments of the present application provide an ablation method, an ablation device and an ablation apparatus.

[0005] An ablation method provided in an embodiment of the present application is applied to an ablation device, the ablation device comprising a spherical catheter, a back plate and an energy connection device, the spherical catheter comprising a catheter and a spherical head end arranged on the catheter, a plurality of electrodes are arranged on the spherical head end, the spherical head end is abutted against human tissue to be ablated, the back plate is abutted against the surface of human skin, the method comprising:

[0006] connecting the spherical catheter to a first energy release device through the energy connection device, and providing ablation energy to electrodes on the spherical catheter through the first energy release device; and

[0007] The spherical catheter and the back plate are connected to a second energy release device through the energy connection device, and ablation energy is provided to the electrode on the spherical catheter through the second energy release device.

[0008] Furthermore, the first energy release device is a pulsed electric field energy release device, and the spherical catheter is connected to the first energy release device through the energy connecting device, and ablation energy is provided to the electrodes on the spherical catheter through the first energy release device, including: connecting part or all of the electrodes on the spherical head end to the first energy release device, and providing pulsed electric field ablation energy to the connected electrodes through the first energy release device.

[0009] Further, connecting part or all of the electrodes on the spherical head end to the first energy release device comprises:

[0010] Determining a current contact state between the spherical tip and human tissue; and

[0011] Connect part or all of the electrodes on the spherical head end that are close to the human tissue to the first energy release device.

[0012] Further, connecting part or all of the electrodes on the spherical head end that are close to the human tissue to the first energy release device comprises:

[0013] Connecting two adjacent electrodes on the spherical head end to the positive output port and the negative output port of the first energy release device respectively, so as to achieve discharge ablation of adjacent electrodes; or

[0014] Connecting two electrodes on the spherical head end separated by at least one electrode to the positive output port and the negative output port of the first energy release device respectively, so as to achieve the interval electrode discharge ablation; or

[0015] Connecting one electrode on the spherical head end to the positive output port of the first energy release device, and connecting all other electrodes adjacent to the one electrode to the negative output port of the first energy release device, so as to achieve regional electrode discharge ablation from the middle electrode to the peripheral electrodes; or

[0016] Connecting one electrode on the spherical head end to the negative output port of the first energy release device, and connecting all other electrodes adjacent to the one electrode to the positive output port of the first energy release device, so as to achieve regional electrode discharge ablation from the peripheral electrodes to the middle electrode; or

[0017] Alternately connect a circle of electrodes connected end to end in a region of the spherical head end to the positive output port and the negative output port of the first energy release device to achieve regional electrode discharge ablation from one electrode to its opposite electrode; or

[0018] A circle of electrodes connected end to end in an area of ​​the spherical head end are alternately connected to the positive output port and the negative output port of the first energy release device to achieve regional electrode discharge ablation from one electrode to its adjacent electrode.

[0019] Further, the second energy release device is a radiofrequency ablation energy release device, the spherical catheter and the back plate are connected to the second energy release device through the energy connection device, and the ablation energy is provided to the electrode on the spherical catheter through the second energy release device, including:

[0020] Some or all of the electrodes on the spherical catheter are connected in series to the positive output port of the second energy release device, the back plate is connected to the negative output port of the second energy release device, and radiofrequency ablation energy is provided to the connected electrodes through the radiofrequency ablation energy release device.

[0021] Furthermore, connecting part or all of the electrodes on the spherical catheter in series to the positive output port of the second energy release device includes: determining the current contact state between the spherical head end and the human tissue; and connecting part or all of the electrodes on the spherical head end that are contacted with the human tissue in series to the positive output port of the second energy release device.

[0022] Furthermore, a plurality of temperature sensors are arranged on the surface of the spherical head end to monitor the temperature of human tissue in contact with the spherical head end.

[0023] Furthermore, the method also includes: alternatingly performing the steps of connecting the spherical catheter to a first energy release device through the energy connection device and providing ablation energy to the electrode on the spherical catheter through the first energy release device, and connecting the spherical catheter and the back plate to a second energy release device through the energy connection device and providing ablation energy to the electrode on the spherical catheter through the second energy release device.

[0024] An embodiment of the present application further provides an ablation device, comprising a memory and a processor coupled to the memory, wherein the processor is configured to execute the steps of the ablation method described above based on instructions stored in the memory.

[0025] An embodiment of the present application also provides an ablation device, which includes a spherical catheter, a back pole plate and an energy connection device. The spherical catheter includes a catheter and a spherical head end arranged on the catheter, and a plurality of electrodes are arranged on the spherical head end. The spherical head end is abutted against human tissue to be ablated, and the back pole plate is abutted against the surface of human skin. The energy connection device is used to: connect the spherical catheter to a first energy release device, and provide ablation energy to the electrodes on the spherical catheter through the first energy release device; and connect the spherical catheter and the back pole plate to a second energy release device, and provide ablation energy to the electrodes on the spherical catheter through the second energy release device.

[0026] According to the ablation method, ablation device, and ablation system provided in the embodiments of the present application, it is possible to flexibly switch between different ablation techniques according to different situations, which is not only convenient to operate but also can achieve better ablation effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The attached drawings below are part of the specification of the present application, which illustrate embodiments of the present application. The attached drawings together with the description of the specification are used to explain the principles of the present application.

[0028] Figure 1 A schematic diagram of an ablation device according to an embodiment of the present application is shown.

[0029] Figure 2 A flow chart of an ablation method according to an embodiment of the present application is shown.

[0030] Figure 3 A schematic diagram of a biphasic electric field pulse according to an embodiment of the present application is shown.

[0031] Figure 4 A schematic diagram showing different discharge ablation modes of electric field ablation according to an embodiment of the present application is shown.

[0032] Figure 5 A schematic diagram of radiofrequency ablation according to an embodiment of the present application is shown.

[0033] Figure 6 A connection diagram of a microcontroller relay switch circuit according to an embodiment of the present application is shown. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solutions and advantages of the embodiments of the present application more clearly understood, the spirit of the contents disclosed in the present application will be clearly explained with the accompanying drawings and detailed descriptions below. After understanding the embodiments of the contents of the present application, any technician in the relevant technical field can change and modify them according to the techniques taught by the contents of the present application without departing from the spirit and scope of the contents of the present application.

[0035] The exemplary embodiments and descriptions of the present application are used to explain the present application, but are not intended to limit the present application. In addition, elements / components with the same or similar reference numerals used in the drawings and embodiments are used to represent the same or similar parts.

[0036] The terms “first”, “second”, etc. used in this document do not particularly refer to an order or sequence, nor are they used to limit this application. They are only used to distinguish elements or operations described with the same technical terms.

[0037] The words “include,” “including,” “have,” “contain,” etc. used in this document are open-ended terms, meaning including but not limited to.

[0038] As used herein, "and / or" includes any or all combinations of the items described.

[0039] As used herein, “plurality” includes “two” and “more than two”; as used herein, “plurality of groups” includes “two groups” and “more than two groups”.

[0040] Certain terms used to describe the present application are discussed below or elsewhere in this specification to provide additional guidance to those skilled in the art regarding the description of the present application.

[0041] The present application embodiment provides an ablation device. Figure 1 As shown, the ablation device of the embodiment of the present application includes a spherical catheter 11, a back electrode plate 12 and an energy connection device 13. The spherical catheter 11 includes a catheter and a spherical head end 1 arranged on the catheter. A plurality of electrodes are arranged on the spherical head end. The spherical head end is abutted against human tissue that needs to be ablated. The back electrode plate 12 is abutted against the surface of human skin, preferably, against the surface of human back skin. The energy connection device 13 is used to connect the spherical catheter 11 to a first energy release device and provide energy to the electrodes on the spherical catheter through the first energy release device; and to connect the spherical catheter 11 to a second energy release device and provide energy to the electrodes on the spherical catheter through the second energy release device.

[0042] Specifically, during use, the spherical tip of the spherical catheter is first placed into the patient's myocardium through the human body's blood vessels, and is closely attached to the myocardial tissue that needs to be ablated. When the spherical tip is placed in a suitable position, the ablation energy is released to the electrode on the spherical tip through the energy release device. Different ablation techniques have different connection methods. For example, for pulsed electric field ablation, it is necessary to connect the different electrodes on the spherical tip to the positive and negative output ports of the energy release device respectively, and then provide ablation energy to the connected electrodes through the energy release device. At this time, the energy release device and the electrodes on the spherical tip form a discharge circuit. For radiofrequency ablation, it is necessary to connect the electrodes on the spherical tip in series to the positive output port of the energy release device, and connect the back plate close to the surface of the human body to the negative output port. At this time, the multiple electrodes on the spherical tip are connected in series to form an overall circuit between the energy release device, the back plate and the human body.

[0043] Figure 2 A schematic diagram of an ablation method according to an embodiment of the present application is shown. The method is applied to the above-mentioned ablation device. The method includes the following steps S21-S22.

[0044] S21, connecting the spherical catheter to a first energy release device through the energy connection device, and providing ablation energy to the electrode on the spherical catheter through the first energy release device; and

[0045] S22, connecting the spherical catheter and the back electrode plate to a second energy release device through the energy connection device, and providing ablation energy to the electrode on the spherical catheter through the second energy release device.

[0046] As described above, the electrode on the spherical head end can be flexibly connected to different ablation devices, so different ablation techniques can be flexibly switched according to different situations, which is not only convenient to operate but also can achieve better ablation effects.

[0047] In one embodiment of the present application, the first energy release device is a pulsed electric field energy release device. When pulsed electric field ablation is required, the spherical catheter can be connected to the first energy release device through the energy connection device, and the pulsed electric field ablation energy can be provided to the electrodes on the spherical catheter through the first energy release device.

[0048] In one embodiment, the pulse electric field energy release device releases nanosecond biphasic electric field pulses. Specifically, the single pulse time (including the biphasic pulse time and the phase switching time) is controlled within the nanosecond range, and the electric field is quickly switched between the positive and negative electrodes, thereby realizing a nanosecond biphasic electric field pulse, such as Figure 3 The use of nanosecond biphasic electric field pulses can reduce the need for anesthesia for patients, significantly reduce muscle tremors and nerve damage, and greatly reduce the pain of patients.

[0049] In one embodiment, connecting the spherical catheter to a first energy release device via the energy connection device, and providing ablation energy to electrodes on the spherical catheter via the first energy release device may include: connecting some or all of the electrodes on the spherical head end to the first energy release device, and providing pulsed electric field ablation energy to the connected electrodes via the first energy release device.

[0050] In one embodiment, connecting some or all of the electrodes on the spherical head end to the first energy release device may include: determining the current contact state between the spherical head end and human tissue; and connecting some or all of the electrodes on the spherical head end that are contacted with the human tissue to the first energy release device.

[0051] Specifically, determining the abutment state may include: obtaining the current impedance value of each electrode from the human body to the back plate; determining the state of each electrode according to the current impedance value of each electrode from the human body to the back plate, including: when the current impedance value is an impedance value of the first order of magnitude, judging that the electrode corresponding to the impedance value is in the first state in human blood, and when the current impedance value is an impedance value of the second order of magnitude, judging that the electrode corresponding to the impedance value is in the second state of the electrode abutting against human tissue.

[0052] Specifically, obtaining the current impedance value of each electrode from the human body to the back plate may include: connecting an electrode to the positive output port of the energy release device, and connecting the back plate to the negative output port of the energy release device, so that a separate loop is formed between the electrode and the energy release device, the back plate and the human body. Therefore, the current impedance value of the electrode from the human body to the back plate can be obtained through the impedance measuring device.

[0053] In this embodiment, the electrode can be first judged to be close to the human tissue, and only the electrode close to the human tissue is connected to the energy release device, so that accurate discharge ablation can be performed to avoid ineffective energy release and ensure sufficient ablation depth. At the same time, the accurate judgment of the tissue close state also brings about accurate control of the electrode. The electrode that does not contact the tissue does not release electric field energy, which minimizes the ionization of the blood and the damage to the red blood cells, and reduces the generation of microbubbles and hemolysis.

[0054] In addition, the ablation system of the embodiment of the present application supports multiple discharge ablation modes, and a suitable discharge ablation mode can be selected among the electrodes close to human tissue. For the part (point or area) close to the tissue, the bidirectional wave can be accurately discharged between adjacent electrodes or between separated electrodes.

[0055] In one embodiment, the ablation system supports adjacent electrode discharge ablation. Figure 4 As shown in (a), two adjacent electrodes on the spherical head end are respectively connected to the positive output port and the negative output port of the first energy release device to achieve adjacent electrode discharge ablation.

[0056] In one embodiment, the ablation system supports spaced electrode discharge ablation. Figure 4 As shown in (b), two electrodes on the spherical head end separated by at least one electrode are connected to the positive output port and the negative output port of the first energy release device respectively to achieve interval electrode discharge ablation.

[0057] In one embodiment, the ablation system supports regional electrode discharge ablation. Figure 4 As shown in (c), one electrode on the spherical head end is connected to the positive output port of the first energy release device, and all other electrodes adjacent to the one electrode are connected to the negative output port of the first energy release device to achieve regional electrode discharge ablation from the middle electrode to the peripheral electrodes. Figure 4 As shown in (d), one electrode on the spherical head end is connected to the negative output port of the first energy release device, and all other electrodes adjacent to the one electrode are connected to the positive output port of the first energy release device to achieve regional electrode discharge ablation from the peripheral electrodes to the middle electrode. Figure 4As shown in (e), a circle of electrodes connected end to end in a region of the spherical head end are alternately connected to the positive output port and the negative output port of the first energy release device to achieve regional electrode discharge ablation from one electrode to its opposite electrode. Figure 4 As shown in (f) and 4(g), a circle of electrodes connected end to end in an area of ​​the spherical head end are alternately connected to the positive output port and the negative output port of the first energy release device to achieve regional electrode discharge ablation from one electrode to its adjacent electrode.

[0058] As mentioned above, the ablation system supports different discharge ablation modes. The contact state between the current spherical tip and the human tissue can be determined first, and then according to the condition of the human tissue to be ablated, a suitable discharge ablation mode can be selected from the electrodes in contact with the human tissue to perform pulsed electric field ablation. For example, for focal tachycardia ablation, or situations where there are important adjacent anatomical / electrical conduction structures around the ablation target, such as ventricular premature beats / tachycardia, atrial premature beats / tachycardia, atrioventricular nodal reentrant tachycardia and other diseases, the following can be used: Figure 4 (a), 4(b) and 4(g) to ensure the accuracy and safety of ablation. For diseases that require linear ablation or extensive myocardial ablation or deep myocardial ablation, such as atrial fibrillation, atrial tachycardia / flutter, organic ventricular tachycardia, etc., the following can be used: Figure 4 (c), 4(d), 4(e), and 4(f) show discharge ablation patterns to ensure sufficient ablation width.

[0059] In one embodiment, a plurality of micro-holes are distributed on the spherical tip of the ablation catheter, and saline isobaric perfusion can be performed through the plurality of micro-holes. The saline perfusion can reduce the contact impedance and ensure the accurate release of energy.

[0060] In one embodiment of the present application, the second energy release device is a radiofrequency ablation energy release device. When radiofrequency ablation is required, the energy connection device can connect the spherical catheter and the back plate to the second energy release device, and the second energy release device provides radiofrequency ablation energy to the electrodes on the spherical catheter.

[0061] In one embodiment, the spherical catheter and the back plate are connected to the second energy release device through the energy connecting device, and ablation energy is provided to the electrodes on the spherical catheter through the second energy release device, including: connecting part or all of the electrodes on the spherical catheter in series to the positive output port of the second energy release device, connecting the back plate to the negative output port of the second energy release device, and providing radiofrequency ablation energy to the connected electrodes through the radiofrequency ablation energy release device.

[0062] In one embodiment, if Figure 5 As shown, all electrodes on the spherical catheter are connected in series to the positive output port of the second energy release device, the back plate is connected to the negative output port of the second energy release device, and radiofrequency ablation energy is provided to the electrodes on the spherical catheter through the radiofrequency ablation energy release device.

[0063] In one embodiment, the spherical tip is a balloon with a diameter of 6 to 12 mm, so the spherical tip can form a large electrode with a diameter of 6 to 12 mm during radiofrequency ablation.

[0064] In one embodiment, connecting some or all electrodes on the spherical catheter in series to the positive output port of the second energy release device includes: determining the current contact state between the spherical head and human tissue; and connecting some or all electrodes on the spherical head that contact the human tissue in series to the positive output port of the second energy release device. In this embodiment, only connecting the electrodes that contact the human tissue to the second energy release device can perform precise discharge ablation, avoid ineffective energy release, and ensure sufficient ablation depth.

[0065] In one embodiment, a plurality of temperature sensors are arranged on the surface of the spherical tip to monitor the temperature of human tissue in contact with the spherical tip.

[0066] In one embodiment, a plurality of micro-holes are distributed on the spherical tip of the ablation catheter, through which saline can be isobarically perfused. Saline perfusion can reduce contact impedance, ensure accurate release of energy, and also dissipate heat during radiofrequency ablation.

[0067] As for the radiofrequency ablation method described above, from the perspective of safety, all the electrodes on the spherical head are connected in series, and the entire head forms a large electrode (the head is the positive electrode and the back plate is the negative electrode), which increases the tissue contact area to avoid cardiac perforation and pericardial tamponade, so there is no need to set up a pressure sensor. From the perspective of effectiveness, the contact area is large enough during ablation, and saline infusion is used for cooling, so that the current density is lower at the same power. When the same energy is output, the heat dissipation is better, reducing the risk of thrombosis and scab. The temperature monitoring function of the temperature sensor further reduces the risk. From the perspective of efficiency, a larger contact area can support a larger ablation power, making the ablation line wider, deeper, and shorter. The operator is also in the radiation environment for a shorter time, and better achieves bidirectional conduction block.

[0068] As mentioned above, in the embodiments of the present application, pulsed electric field ablation or radiofrequency ablation can be selected according to the specific situation. For example, when ablating the posterior wall of the left atrium and the right pulmonary vein, electric field pulse energy can be selected to avoid damage to adjacent anatomical parts such as the esophagus and phrenic nerve. Alternatively, for the same ablation site, ablation can also be performed by combining pulsed electric field ablation and radiofrequency ablation. For example, radiofrequency (electric field) ablation can be performed for a certain period of time, and then electric field (radiofrequency) ablation can be performed for a certain period of time; or radiofrequency → electric field → radiofrequency → electric field... cyclic ablation can be performed periodically.

[0069] Specifically, in one embodiment, the steps of connecting the spherical catheter to a first energy release device through the energy connection device and providing ablation energy to the electrode on the spherical catheter through the first energy release device, and connecting the spherical catheter and the back plate to a second energy release device through the energy connection device and providing ablation energy to the electrode on the spherical catheter through the second energy release device are performed alternately.

[0070] In one embodiment, the energy connection device is a microcontroller relay switch circuit. Figure 6 As shown, each electrode circuit port of the controller relay switch circuit is independently controlled to realize multiple electrode discharge modes. Figure 6 In the figure, P1 to Pn are balloon catheter electrodes, and N0 is the negative plate electrode. When radiofrequency energy is used for ablation, the balloon catheter P1-Pn electrodes are used as the positive electrode as a whole, and N0 is used as the negative electrode; when pulsed electric field energy is used for ablation, the positive and negative electrodes of the balloon catheter P1 to Pn electrodes can be selected by the microcontroller according to actual needs.

[0071] The ablation method according to the embodiment of the present application is introduced above. Through the above method, different ablation techniques can be flexibly switched according to different situations. It is not only easy to operate but also can achieve better ablation effect.

[0072] An embodiment of the present application further provides an ablation device, comprising a memory and a processor coupled to the memory, wherein the processor is configured to execute the steps of the ablation method described above based on instructions stored in the memory.

[0073] The present application also provides an ablation device, which includes a spherical catheter, a back pole plate and an energy connection device. The spherical catheter includes a catheter and a spherical head end arranged on the catheter, and a plurality of electrodes are arranged on the spherical head end. The spherical head end is abutted against human tissue to be ablated, and the back pole plate is abutted against the surface of human skin. The energy connection device is used to: connect the spherical catheter to a first energy release device, and provide ablation energy to the electrodes on the spherical catheter through the first energy release device; and connect the spherical catheter and the back pole plate to a second energy release device, and provide ablation energy to the electrodes on the spherical catheter through the second energy release device.

[0074] In the above embodiments or implementations of the present application, various embodiments or implementations are associated with each other and can be referenced and quoted to each other without violating general principles. The above description is only an illustrative specific implementation of the present application. Without departing from the concept and principle of the present application, any equivalent changes and modifications made by any technician in the field shall fall within the scope of protection of the present application.

Claims

1. An ablation method, applied to an ablation device, the ablation device comprising a spherical catheter, a back plate and an energy connection device, the spherical catheter comprising a catheter and a spherical head end arranged on the catheter, a plurality of electrodes arranged on the spherical head end, the spherical head end being abutted against human tissue to be ablated, the back plate being abutted against a human skin surface, the method comprising: Connecting the spherical catheter to a first energy release device through the energy connection device, and providing ablation energy to electrodes on the spherical catheter through the first energy release device; as well as The spherical catheter and the back plate are connected to a second energy release device through the energy connection device, and ablation energy is provided to the electrode on the spherical catheter through the second energy release device.

2. The method according to claim 1, characterized in that The first energy release device is a pulsed electric field energy release device, the spherical catheter is connected to the first energy release device through the energy connection device, and the ablation energy is provided to the electrode on the spherical catheter through the first energy release device, which includes: Some or all of the electrodes on the spherical tip are connected to the first energy release device, and pulsed electric field ablation energy is provided to the connected electrodes through the first energy release device.

3. The method according to claim 2, characterized in that Connecting some or all of the electrodes on the spherical head end to the first energy release device comprises: Determining a current contact state between the spherical tip and human tissue; and Connect part or all of the electrodes on the spherical head end that are close to the human tissue to the first energy release device.

4. The method according to claim 3, characterized in that Connecting part or all of the electrodes on the spherical head end that are close to the human tissue to the first energy release device comprises: Connecting two adjacent electrodes on the spherical head end to the positive output port and the negative output port of the first energy release device respectively, so as to achieve discharge ablation of adjacent electrodes; or Connecting two electrodes on the spherical head end separated by at least one electrode to the positive output port and the negative output port of the first energy release device respectively, so as to achieve the interval electrode discharge ablation; or Connecting one electrode on the spherical head end to the positive output port of the first energy release device, and connecting all other electrodes adjacent to the one electrode to the negative output port of the first energy release device, so as to achieve regional electrode discharge ablation from the middle electrode to the peripheral electrodes; or Connecting one electrode on the spherical head end to the negative output port of the first energy release device, and connecting all other electrodes adjacent to the one electrode to the positive output port of the first energy release device, so as to achieve regional electrode discharge ablation from the peripheral electrodes to the middle electrode; or Alternately connect a circle of electrodes connected end to end in a region of the spherical head end to the positive output port and the negative output port of the first energy release device to achieve regional electrode discharge ablation from one electrode to its opposite electrode; or A circle of electrodes connected end to end in an area of ​​the spherical head end are alternately connected to the positive output port and the negative output port of the first energy release device to achieve regional electrode discharge ablation from one electrode to its adjacent electrode.

5. The method according to claim 1, characterized in that The second energy release device is a radiofrequency ablation energy release device, the spherical catheter and the back plate are connected to the second energy release device through the energy connection device, and the ablation energy is provided to the electrode on the spherical catheter through the second energy release device, including: Some or all of the electrodes on the spherical catheter are connected in series to the positive output port of the second energy release device, the back plate is connected to the negative output port of the second energy release device, and radiofrequency ablation energy is provided to the connected electrodes through the radiofrequency ablation energy release device.

6. The method according to claim 5, characterized in that Connecting part or all of the electrodes on the spherical catheter in series to the positive output port of the second energy release device comprises: Determining a current contact state between the spherical tip and human tissue; and Part or all of the electrodes on the spherical head end that are close to the human tissue are connected in series to the positive output port of the second energy release device.

7. The method according to claim 1, characterized in that A plurality of temperature sensors are also arranged on the surface of the spherical head end to monitor the temperature of human tissue in contact with the spherical head end.

8. The method according to claim 1, characterized in that The method further comprises: The steps of connecting the spherical catheter to a first energy release device through the energy connection device and supplying ablation energy to the electrode on the spherical catheter through the first energy release device, and connecting the spherical catheter and the back plate to a second energy release device through the energy connection device and supplying ablation energy to the electrode on the spherical catheter through the second energy release device are alternately performed.

9. An ablation device, characterized in that: The method comprises a memory and a processor coupled to the memory, wherein the processor is configured to execute the steps in the method according to any one of claims 1 to 8 based on instructions stored in the memory.

10. An ablation device, comprising a spherical catheter, a back plate and an energy connection device, wherein the spherical catheter comprises a catheter and a spherical head end arranged on the catheter, a plurality of electrodes are arranged on the spherical head end, the spherical head end is abutted against human tissue to be ablated, and the back plate is abutted against the surface of human skin, and the energy connection device is used for: connecting the spherical catheter to a first energy release device, and providing ablation energy to the electrodes on the spherical catheter through the first energy release device; and connecting the spherical catheter and the back plate to a second energy release device, and providing ablation energy to the electrodes on the spherical catheter through the second energy release device.

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