Electrode structures and ablation devices

Abstract

Provided are an electrode structure and an ablation device. The electrode structure comprises a plurality of first electrode wires arranged in sequence and spaced apart from each other, and a plurality of second electrode wires arranged in sequence and spaced apart from each other. Each first electrode wire alternately overlaps the plurality of second electrode wires, and each second electrode wire alternately overlaps the plurality of first electrode wires, so as to form overlapping portions at positions where the first electrode wires and the second electrode wires overlap. At least one of the first electrode wires and the second electrode wires comprises at least one cut-off portion located between two adjacent overlapping portions along the extension direction of the at least one of the first electrode wires and the second electrode wires. The first electrode wires and the second electrode wires are connected to each other at positions of the two overlapping portions corresponding to the cut-off portion to form a connection portion. According to the embodiments of the present disclosure, the flexibility of the electrode structure as a whole can be effectively enhanced, so that the electrode structure is more easily adjusted when entering a relatively narrow or bent channel, and the flexibility of the electrode structure when being manipulated is higher.

Description

Technical Field

[0001] At least one embodiment of this disclosure relates to an electrode structure and an ablation device. Background Technology

[0002] With the rapid development of medical technology, the variety of medical devices used for tissue ablation has gradually increased and diversified. For example, tissues requiring ablation include natural cavities, such as the nasal cavity, esophagus, trachea, digestive tract, ear canal, and oral cavity. Common ablation methods include radiofrequency ablation and pulsed electric field ablation.

[0003] Radiofrequency ablation, typically a point-by-point procedure, is time-consuming and requires a high level of catheter manipulation skill from the operator. Patients may experience discomfort during the procedure and are prone to pulmonary vein (PV) stenosis post-procedure. Radiofrequency ablation can damage the cardiac endothelial surface, activate the extrinsic coagulation cascade, and lead to pyrolysis and thrombus formation, which can potentially cause systemic thromboembolism. Applying radiofrequency energy to the target tissue can affect non-target tissues; applying radiofrequency energy to the atrial wall may cause esophageal or nerve damage. Furthermore, radiofrequency ablation can lead to tissue scarring, further contributing to embolic problems.

[0004] Pulsed electric field (PEF) technology applies a brief high voltage to tissue cells, generating a localized high-voltage electric field of several hundred volts per centimeter. This localized high electric field disrupts the cell membrane by creating pores. The applied electric field exceeds the cell's voltage threshold, preventing the pores from closing. This electroporation is irreversible, allowing for the exchange of biomolecular materials across the membrane, leading to cell necrosis or apoptosis. Because different tissue cells have different voltage penetration thresholds, high-voltage pulsed ablation can selectively treat cardiomyocytes (with relatively low thresholds) without affecting other non-target tissues (such as nerves, esophagus, blood vessels, and blood). Due to the very short energy release time, pulsed ablation does not produce a thermal effect, thus avoiding tissue damage, pulmonary vein stenosis, and other problems. Pulsed electric field ablation is a non-thermal technique; the damage mechanism involves creating nanoscale micropores in certain cell membranes through high-frequency electric pulses.

[0005] Designing an ablation device that can improve ablation efficiency and is easy to operate, based on different design requirements and user habits, has become a research hotspot that needs continuous breakthroughs in the field of medical devices. Summary of the Invention

[0006] At least one embodiment of this disclosure provides an electrode structure and an ablation device. By providing a cut-off portion in the electrode structure, the embodiments of this disclosure can effectively enhance the overall flexibility of the electrode structure, making it easier to adjust when entering narrower or more curved channels, and making the electrode structure more flexible when being manipulated.

[0007] At least one embodiment of this disclosure provides an electrode structure comprising a plurality of first electrode wires spaced apart and arranged sequentially, and a plurality of second electrode wires spaced apart and arranged sequentially. Each first electrode wire alternately overlaps with the plurality of second electrode wires, and each second electrode wire alternately overlaps with the plurality of first electrode wires, to form a plurality of overlapping portions at the overlapping positions of the first electrode wires and the second electrode wires. At least one of the first electrode wires and the second electrode wires includes at least one break portion along its extension direction located between two adjacent overlapping portions. The first electrode wires and the second electrode wires are connected to each other at the positions of the two overlapping portions corresponding to the break portion to form a connection portion.

[0008] For example, according to at least one embodiment of the electrode structure provided in this disclosure, the first electrode wire includes at least one cut-off portion located between two adjacent connection portions in the extension direction of the first electrode wire as a first cut-off portion, and at least one first electrode wire is disposed between two adjacent first cut-off portions along the arrangement direction of the first electrode wire.

[0009] For example, according to at least one embodiment of the present disclosure, in the electrode structure, along the arrangement direction of the first electrode wires, two adjacent first cut-off portions are located between the same two second electrode wires.

[0010] For example, according to at least one embodiment of the electrode structure provided in this disclosure, the first electrode wire includes at least one cut-off portion located between two adjacent connection portions in the extension direction of the first electrode wire as a first cut-off portion; along the extension direction of the first electrode wire, the portion of the first electrode wire located between two adjacent first cut-off portions is a first electrode wire sub-portion, and the first electrode wire sub-portion overlaps with at least two second electrode wires.

[0011] For example, according to at least one embodiment of the electrode structure provided in this disclosure, along the extension direction of the first electrode wire, the number of second electrode wires overlapping with portions on both sides of the same first cut portion of a first electrode wire is equal, and both are a first number; along the arrangement direction of the first electrode wire, the number of second electrode wires overlapping portions on both sides of the same first cut portion of another first electrode wire spaced apart from the first electrode wire is equal, and both are a second number; the other first electrode wire spaced apart from the first electrode wire and the first electrode wire both include the first cut portion, and the first number and the second number are equal.

[0012] For example, in the electrode structure provided according to at least one embodiment of the present disclosure, along the arrangement direction of the first electrode wires, the two second electrode wires adjacent to one of the two adjacent first cut-off portions are different from the two second electrode wires adjacent to the other of the two adjacent first cut-off portions.

[0013] For example, according to at least one embodiment of the present disclosure, in the electrode structure, along the arrangement direction of the first electrode wires, two adjacent first cut-off portions are respectively located in two adjacent first electrode wires.

[0014] For example, according to at least one embodiment of the present disclosure, in the electrode structure, at least one first electrode wire is disposed between two adjacent first cut-off portions along the arrangement direction of the first electrode wire.

[0015] For example, according to at least one embodiment of the present disclosure, the electrode structure includes multiple first electrode wires comprising multiple first electrode wire groups, each first electrode wire group comprising at least two adjacent first electrode wires. Along the arrangement direction of the first electrode wires, the at least two adjacent first electrode wires in the first electrode wire group include the first cut-off portion, and the first cut-off portion included in each of the at least two adjacent first electrode wires is arranged adjacently and located between the same two second electrode wires.

[0016] For example, according to at least one embodiment of the electrode structure provided in this disclosure, the second electrode wire includes at least one cut-off portion located between two adjacent connection portions in the extension direction of the second electrode wire as a second cut-off portion, and at least one second electrode wire is disposed between two adjacent second cut-off portions along the arrangement direction of the second electrode wire.

[0017] For example, according to at least one embodiment of the present disclosure, four overlapping portions formed by two first electrode wires adjacent to the first electrode wire having the first cut-off portion in the arrangement direction of the first electrode wire and two second electrode wires connected to the connecting portions at both ends of the first cut-off portion are sequentially connected to form a first quadrilateral; four overlapping portions formed by two second electrode wires adjacent to the second electrode wire having the second cut-off portion in the arrangement direction of the second electrode wire and two first electrode wires connected to the connecting portions at both ends of the second cut-off portion are sequentially connected to form a second quadrilateral.

[0018] For example, in the electrode structure provided according to at least one embodiment of the present disclosure, both the first quadrilateral and the second quadrilateral include at least one of a square, a rectangle, and a parallelogram.

[0019] For example, in the electrode structure provided according to at least one embodiment of the present disclosure, along the extension direction of the second electrode wire, the portion of the second electrode wire located between two adjacent second cut-off portions is a second electrode wire sub-portion, and the second electrode wire sub-portion overlaps with at least two first electrode wires.

[0020] For example, according to at least one embodiment of the electrode structure provided in this disclosure, along the arrangement direction of the second electrode wire, at least one second electrode wire is provided between two adjacent first cut-off portions, and at least two first electrode wires are provided between two adjacent second cut-off portions. Along the extension direction of the second electrode wire, at least one first electrode wire is provided between two adjacent first cut-off portions, and at least two first electrode wires are provided between two adjacent second cut-off portions. The second electrode wire of the second cut-off portion adjacent to the first cut-off portion overlaps with the first electrode wire of the first cut-off portion and is connected at the overlap position. One end of the first cut-off portion and one end of the second cut-off portion coincide at the overlap position.

[0021] For example, according to at least one embodiment of the present disclosure, the first electrode wire where the first cut-off portion is located, the second electrode wire where the second cut-off portion is located adjacent to the first cut-off portion, two first electrode wires adjacent to the first electrode wire having the first cut-off portion in the arrangement direction of the first electrode wires, and two second electrode wires adjacent to the second electrode wire having the second cut-off portion adjacent to the first cut-off portion in the arrangement direction of the second electrode wires overlap each other to form six overlapping portions at the overlapping positions, and the six overlapping portions are connected in sequence and form a heart shape.

[0022] For example, according to at least one embodiment of the electrode structure provided in this disclosure, the first cut-off portion and the second cut-off portion have an intersection portion, and along the extension direction of the first electrode wire, at least one first electrode wire is disposed between two adjacent first cut-off portions, and at least one second electrode wire having the second cut-off portion is disposed between the second electrode wires where the connecting portions are located on both sides of each first cut-off portion; along the extension direction of the second electrode wire, at least one first electrode wire having the first cut-off portion is disposed between the first electrode wires where the connecting portions are located on both sides of each second cut-off portion.

[0023] For example, according to at least one embodiment of the present disclosure, four overlapping portions formed by the overlapping of two first electrode wires adjacent to the first electrode wire having the first cut-off portion in the arrangement direction of the first electrode wire and two second electrode wires adjacent to the second electrode wire having the second cut-off portion in the arrangement direction of the second electrode wire are sequentially connected to form a third quadrilateral.

[0024] For example, according to at least one embodiment of the electrode structure provided in this disclosure, the minimum area of ​​the quadrilateral formed by the overlapping portions of two adjacent first electrode wires and two adjacent second electrode wires is 1 / 5 to 1 / 2 of the area of ​​the third quadrilateral.

[0025] For example, according to at least one embodiment of the present disclosure, the electrode structure further includes a first connecting segment, an intermediate segment, and a second connecting segment connected in sequence, wherein the intermediate segment is located between the first connecting segment and the second connecting segment, and when the electrode structure is configured to be in a working state, the intermediate segment is cylindrical, and along the direction from the first connecting segment to the second connecting segment, the inner diameter of the first connecting segment gradually increases, the inner diameter of the intermediate segment remains unchanged, and the inner diameter of the second connecting segment gradually decreases.

[0026] For example, according to at least one embodiment of the present disclosure, the electrode structure further includes a first connecting segment, an intermediate segment, and a second connecting segment connected in sequence, wherein the intermediate segment is located between the first connecting segment and the second connecting segment, and when the electrode structure is configured to be in a working state, the intermediate segment is frustum-shaped, and along the direction from the first connecting segment to the second connecting segment, the inner diameter of the first connecting segment gradually increases, the inner diameter of the intermediate segment gradually increases, and the inner diameter of the second connecting segment gradually decreases.

[0027] For example, according to at least one embodiment of the present disclosure, the electrode structure has a circular or elliptical cross section in the direction perpendicular to the first connecting segment and pointing to the second connecting segment.

[0028] For example, according to at least one embodiment of the present disclosure, the electrode structure further includes a support structure disposed on the inner sidewall of the cylinder, wherein the support structure is elongated and the extending direction of the support structure is perpendicular to the circumferential direction of the cylinder.

[0029] For example, according to at least one embodiment of the present disclosure, the electrode structure includes a plurality of the support structures arranged sequentially along the circumference of the cylinder.

[0030] For example, according to at least one embodiment of the present disclosure, the electrode structure includes at least two support substructures, wherein at least two of the support substructures in each support structure are spaced apart along a direction perpendicular to the circumferential direction of the cylinder.

[0031] For example, in the electrode structure provided according to at least one embodiment of the present disclosure, the extension lines of at least two of the support substructures in each support structure are located on the same straight line; and / or the extension lines of at least two of the support substructures in each support structure are intersecting and parallel to each other.

[0032] At least one embodiment of this disclosure provides an ablation device including an electrode structure as described in any of the preceding claims, a pull rod, a conduit, and a control handle. The electrode structure includes a first end and a second end opposite each other in the extension direction of the pull rod. A portion of the pull rod is sleeved within the conduit, and a portion of the pull rod extending beyond the conduit passes through the electrode structure. The first end of the electrode structure is connected to the end of the pull rod remote from the conduit, and the second end of the electrode structure is connected to the end of the conduit proximal to the electrode structure. The control handle is connected to the end of the pull rod remote from the electrode structure and configured to control the movement of the pull rod relative to the conduit along its axial direction to control the degree to which the electrode structure opens.

[0033] For example, in an ablation device provided according to at least one embodiment of the present disclosure, a spiral groove is provided on the outer wall of the portion of the pull rod connected to the electrode structure, the distance between the end of the spiral groove near the electrode structure and the end of the electrode structure near the spiral groove is 1mm-20mm, and the length of the spiral groove is 20mm-100mm.

[0034] For example, in an ablation device provided according to at least one embodiment of the present disclosure, the lever includes a first sub-lever and a second sub-lever that are detachably connected, with the first sub-lever being closer to the electrode structure relative to the second sub-lever along the extension direction of the lever.

[0035] For example, in an ablation device provided according to at least one embodiment of the present disclosure, the first sub-pull rod is threadedly connected to the second sub-pull rod.

[0036] For example, in an ablation device provided according to at least one embodiment of the present disclosure, the conduit includes a first sub-conduit, a second sub-conduit, and a third sub-conduit connected sequentially along the direction of the electrode structure toward the control handle, wherein the hardness of the first sub-conduit is less than the hardness of the second sub-conduit, and the hardness of the second sub-conduit is less than the hardness of the third sub-conduit.

[0037] For example, in an ablation device provided according to at least one embodiment of the present disclosure, the first sub-catheter has a dimension of 20 mm to 100 mm in the extension direction of the pull rod, and at least one of the first and second sub-catheters is made of polyether block polyamide, and the third sub-catheter is made of at least one of polyether block polyamide and polydodecanoic acid.

[0038] For example, in an ablation device provided according to at least one embodiment of the present disclosure, the catheter includes a pre-bent section adjacent to the end of the catheter connected to the electrode structure, and the pre-bent section has a dimension of 2mm-60mm in the extension direction of the catheter, and the angle between the pre-bent section and the extension direction of the catheter is 0°-30°. Attached Figure Description

[0039] To more clearly illustrate the technical solutions of the embodiments of this disclosure, the accompanying drawings of the embodiments will be briefly described below. Obviously, the drawings described below only relate to some embodiments of this disclosure and are not intended to limit this disclosure.

[0040] Figure 1 This is a schematic diagram of a portion of an electrode structure provided for at least one embodiment of the present disclosure.

[0041] Figure 2 A schematic diagram of a portion of another electrode structure provided for at least one embodiment of this disclosure.

[0042] Figure 3 A schematic diagram of a portion of another electrode structure provided for at least one embodiment of this disclosure.

[0043] Figure 4 A schematic diagram of a portion of another electrode structure provided for at least one embodiment of this disclosure.

[0044] Figure 5 A schematic diagram of a portion of another electrode structure provided for at least one embodiment of this disclosure.

[0045] Figure 6 A schematic diagram of a portion of another electrode structure provided for at least one embodiment of this disclosure.

[0046] Figure 7 A schematic diagram of a portion of another electrode structure provided for at least one embodiment of this disclosure.

[0047] Figure 8 A schematic diagram of a portion of another electrode structure provided for at least one embodiment of this disclosure.

[0048] Figure 9 A schematic diagram of a portion of another electrode structure provided for at least one embodiment of this disclosure.

[0049] Figure 10 A schematic diagram of a portion of another electrode structure provided for at least one embodiment of this disclosure.

[0050] Figure 11 A schematic diagram of a portion of another electrode structure provided for at least one embodiment of this disclosure.

[0051] Figure 12 This is a schematic diagram of an electrode structure with a support structure provided for at least one embodiment of the present disclosure.

[0052] Figure 13 A schematic diagram of an electrode structure with another support structure provided for at least one embodiment of this disclosure.

[0053] Figure 14 A schematic diagram of an electrode structure with another support structure provided for at least one embodiment of the present disclosure.

[0054] Figure 15 This is a schematic diagram of the structure of an ablation device provided for at least one embodiment of the present disclosure.

[0055] Figure 16 for Figure 15 A schematic diagram of the electrode structure and pull rod of the ablation device.

[0056] Figure 17 for Figure 15 A schematic diagram of the tie rod structure of the ablation device.

[0057] Figure 18 This is a schematic diagram of the electrode structure and pull rod in an ablation device provided for at least one embodiment of the present disclosure.

[0058] Figure 19 for Figure 18 A schematic diagram of the tie rod structure of the ablation device.

[0059] Figure 20 A schematic diagram of another ablation device provided for at least one embodiment of this disclosure.

[0060] Figure 21 This is a schematic diagram of the structure of another ablation device provided for at least one embodiment of the present disclosure. Detailed Implementation

[0061] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. Based on the described embodiments of this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this disclosure.

[0062] Unless otherwise defined, the technical or scientific terms used in this disclosure shall have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms “first,” “second,” and similar terms used in this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as “comprising” or “including” mean that an element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects.

[0063] The features such as "perpendicular," "parallel," and "identical" used in the embodiments of this disclosure include features in the strict sense of "perpendicular," "parallel," and "identical," as well as cases where "approximately perpendicular," "approximately parallel," and "approximately identical" include a certain degree of error. Taking into account the measurement and the error associated with the measurement of a specific quantity (i.e., the limitations of the measurement system), they represent the acceptable deviation range for a specific value as determined by a person skilled in the art. The "center" in the embodiments of this disclosure can include a position strictly located at the geometric center and a position approximately located at the center of a small area surrounding the geometric center.

[0064] Typically, ablation devices for tissue ablation include ablation elements and control elements. For example, the ablation element can include various forms of electrode assemblies. For instance, an electrode assembly can include an electrode basket woven from one or more electrode wires, or an electrode assembly composed of multiple electrode wires that can expand outwards and is claw-shaped. For example, the electrode basket can be basket-shaped or flower-shaped. For example, the control element of the ablation device can include components such as a lever and a control handle. One end of the lever is connected to the electrode basket, and the other end is connected to the control handle. Under the action of the control handle, the lever can cause the electrode basket to open or close.

[0065] In their research, the inventors of this application discovered that in ablation devices, a high density of electrode wires is necessary to ensure good ablation effectiveness. However, increasing the density of electrode wires in the electrode basket may lead to an increase in the overall rigidity of the basket and a decrease in its flexibility. Simultaneously, to adapt to the tortuous and varied natural cavities, the flexibility of the electrode basket needs to be improved. For example, in the field of ablation therapy for the trachea, when the electrode basket is located inside the bronchus, it may be difficult to bend the basket, and it may also limit the flexible use of the catheter positioned on the outer wall of the pull rod.

[0066] Therefore, in order to address the above problems, there is an urgent need to develop an ablation device with high ablation efficiency and good electrode basket flexibility, so that the ablation device can adapt to the tortuous and varied natural cavities and increase its application scenarios.

[0067] Embodiments of this disclosure provide an electrode structure and an ablation device. The electrode structure includes a plurality of first electrode wires spaced apart and arranged sequentially, and a plurality of second electrode wires spaced apart and arranged sequentially. Each first electrode wire alternately overlaps with the plurality of second electrode wires, and each second electrode wire alternately overlaps with the plurality of first electrode wires, to form overlapping portions at the locations where the first and second electrode wires overlap. At least one of the first and second electrode wires includes at least one cut-off portion along its extending direction located between two adjacent overlapping portions. The first and second electrode wires are connected to each other at the locations of the two overlapping portions corresponding to the cut-off portions to form connecting portions.

[0068] The embodiments of this disclosure, by providing a cut-off portion in the electrode structure, can reduce the density of the first electrode wire and / or the second electrode wire in the electrode structure, and can effectively enhance the overall flexibility of the electrode structure, making the electrode structure easier to adjust when entering narrower or more curved channels, and making the electrode structure more flexible when being manipulated.

[0069] The electrode structure and ablation device are described below with reference to the accompanying drawings and through some embodiments. Figure 1 A schematic diagram of a portion of an electrode structure provided for at least one embodiment of this disclosure. (See reference...) Figure 1 The present disclosure provides an electrode structure 01. The electrode structure 01 includes a plurality of first electrode wires 10 spaced apart and arranged sequentially, and a plurality of second electrode wires 20 spaced apart and arranged sequentially. Each first electrode wire 10 alternately overlaps with the plurality of second electrode wires 20, and each second electrode wire 20 alternately overlaps with the plurality of first electrode wires 10, to form a plurality of overlapping portions 30 at the overlapping positions of the first electrode wires 10 and the second electrode wires 20.

[0070] refer to Figure 1At least one of the first electrode wire 10 and the second electrode wire 20 includes at least one cut-off portion 40 located between two adjacent overlapping portions 30 along its extension direction. The first electrode wire 10 and the second electrode wire 20 are connected to each other at the positions of the two overlapping portions 30 corresponding to the cut-off portion 40 to form a connection portion 50.

[0071] For example, refer to Figure 1 The electrode structure 01 can be an electrode basket in an ablation device for tissue ablation, but the embodiments of this disclosure are not limited to this. For example, the electrode structure 01 can be woven from multiple first electrode wires 10 and multiple second electrode wires 20. For example, the arrangement direction of the multiple first electrode wires 10 can be represented as direction Y, and the extension direction of the first electrode wires 10 can be represented as direction X. For example, directions X and Y do not have to be strictly straight. For example, directions X and Y can have a certain curvature. For example, the arrangement direction of the multiple first electrode wires 10 can also have a certain deviation relative to direction Y. For example, the deviation range can be 0°-30° relative to direction Y, but the embodiments of this disclosure are not limited to this. For example, the extension direction of each first electrode wire 10 does not have to be strictly the same. For example, the extension direction of the first electrode wire 10 can have a certain deviation relative to direction X. For example, the deviation range can be 0°-30° relative to direction X, but the embodiments of this disclosure are not limited to this.

[0072] refer to Figure 1Multiple first electrode wires 10 are arranged at intervals in the Y direction, and the multiple first electrode wires 10 do not cross each other. Multiple second electrode wires 20 are arranged at intervals in the X direction, and the multiple second electrode wires 20 do not cross each other. Each first electrode wire 10 overlaps with multiple second electrode wires 20 alternately, that is, a portion of each first electrode wire 10 in its extension direction presses on at least one second electrode wire 20, and at least one second electrode wire 20 adjacent to the at least one second electrode wire 20 presses on another portion of the first electrode wires 10, and so on. Each second electrode wire 20 forms an overlapping portion 30 at the position where it overlaps with each second electrode wire 20. Therefore, the number of second electrode wires 20 overlapping each first electrode wire 10 is equal to the number of overlapping portions 30 corresponding to each first electrode wire 10. For example, both the first electrode wire 10 and the second electrode wire 20 comprise conductive materials. For example, the materials of the first electrode wire 10 and the second electrode wire 20 may be the same, but the embodiments of this disclosure are not limited thereto. For example, the first electrode wire 10 or the second electrode wire 20 may comprise at least one of cobalt-chromium alloy wire, 316L stainless steel wire, and 304 stainless steel wire, but the embodiments of this disclosure are not limited thereto.

[0073] refer to Figure 1 Both the first electrode wire 10 and the second electrode wire 20 may include at least one cut-off portion 40. Figure 1 The first electrode wire 10 is described in the illustration, including a cut-off portion 40. For example, each first electrode wire 10 may include at least one cut-off portion 40 in its extension direction (i.e., in direction X). Each cut-off portion 40 is located between two adjacent overlapping portions 30 in the first electrode wire 10.

[0074] For example, refer to Figure 1The severed portion 40 refers to the part that is broken and removed from the first electrode wire 10 or the second electrode wire 20. For example, the two overlapping portions 30 corresponding to the severed portion 40 are the two overlapping portions 30 located at both ends of the severed portion 40, and the first electrode wire 10 and the second electrode wire 20 forming each of the two overlapping portions 30 are connected to each other at the overlapping position, that is, at least a portion of each of the two overlapping portions 30 forms a connecting portion 50. Thus, the first electrode wire 10 after the severed portion 40 is formed can be fixed to reduce the risk of misalignment or detachment, thereby ensuring the density of the first electrode wire 10 in the electrode structure 01 and improving the ablation effectiveness. In addition, this design can also prevent the first electrode wire 10 and / or the second electrode wire 20 at both ends of the severed portion 40 from warping and becoming sharp as the size of the basket electrode increases along its circumferential direction, and further prevents the risk of scratching the object to be ablated due to the first electrode wire 10 and / or the second electrode wire 20 not being properly controlled.

[0075] The embodiments of this disclosure, by providing at least one cut-off portion 40 in at least one of the first electrode wire 10 and the second electrode wire 20, can reduce the weaving density of at least one of the first electrode wire 10 and the second electrode wire 20 in the electrode structure 01, and effectively enhance the flexibility of the electrode structure 01, making the electrode structure 01 easy to adjust. At the same time, it can also make the electrode wire density in the electrode structure 01 higher, so as to have a good ablation effect.

[0076] For example, refer to Figure 1 The lengths of the multiple cut-off portions 40 in each first electrode wire 10 or each second electrode wire 20 can be the same in their extending direction. For example, Figure 1 The second electrode wire 20 may not be provided between the two ends of each of the ablation portions 40, but the embodiments of this disclosure are not limited to this. For example, in the electrode structure 01, the multiple ablation portions 40 can be arranged in various ways according to design requirements to adapt to different application environments and improve ablation efficiency.

[0077] Figure 2 A schematic diagram of a portion of another electrode structure provided for at least one embodiment of this disclosure.

[0078] For example, refer to Figure 2 In electrode structure 02, the first electrode wire 10 includes at least one cut-off portion 40 located in the extending direction X of the first electrode wire 10 and between two adjacent connecting portions 50, which is a first cut-off portion 401. For example, Figure 1 and Figure 2The electrode structures shown all include only multiple first cut-off portions 401, while the second electrode wires 20 do not have cut-off portions 40. However, the embodiments of this disclosure are not limited to this. For example, the second electrode wires 20 may also have cut-off portions 40.

[0079] For example, refer to Figure 2 Along the Y-direction of the arrangement of the first electrode wires 10, at least one first electrode wire 10 is disposed between two adjacent first cut-off portions 401. For example, in the Y-direction, two adjacent first cut-off portions 401 refer to the two first cut-off portions 401 that are closest to each other in that direction, that is, two adjacent first cut-off portions 401 refer to the two first cut-off portions 401 that have the smallest number of first electrode wires 10 separated in that direction. For example, in Figure 2 The two adjacent first cut-off portions 401 can be first cut-off portions 4011 and 4012, that is, the two first cut-off portions 401 located between the same two second electrode wires 20 with the smallest distance in the Y direction. For example, in Figure 2 The two adjacent first cut-off portions 401 can also be first cut-off portions 4012 and 4013, that is, the two first cut-off portions 401 located between two different second electrode wires 20 with the smallest distance in the Y direction. For example, when the number of first electrode wires 10 between the two first cut-off portions 401 located between the same two second electrode wires 20 and with the smallest distance in the Y direction is the same as the number of first electrode wires 10 between the two first cut-off portions 401 located between different second electrode wires 20 and with the smallest distance in the Y direction, preferably, the two adjacent first cut-off portions 401 in the Y direction are the two first cut-off portions 401 located between the same two second electrode wires 20 and with the smallest distance in the Y direction. That is, preferably, in the Y direction, the two adjacent first cut-off portions 401 are first cut-off portions 4011 and first cut-off portions 4012.

[0080] For example, refer to Figure 2 Two adjacent first cut-off portions 401, such as first cut-off portion 4011 and first cut-off portion 4012, are separated only by a first electrode wire 10. For example, when the minimum distance between two adjacent overlapping portions 30 of the same second electrode wire 20 in its extension direction (i.e., in direction Y) is a first spacing L, the spacing between two adjacent first cut-off portions 401 in direction Y is at least 2L, but the embodiments of this disclosure are not limited to this.

[0081] For example, refer to Figure 2Along the extension direction X of the first electrode wire 10, the portion of the first electrode wire 10 located between two adjacent first cut-off portions 401 is the first electrode wire sub-portion 101, and the first electrode wire sub-portion 101 overlaps with at least two second electrode wires 20.

[0082] For example, refer to Figure 2 In direction X, two adjacent first disconnected portions 401 refer to the two first disconnected portions 401 that are closest to each other in that direction; that is, two adjacent first disconnected portions 401 refer to the two first disconnected portions 401 that have the smallest number of second electrode wires 20 spaced apart in that direction. For example, in Figure 2 In the X direction, two adjacent first cut-off portions 401 can be first cut-off portion 4011 and first cut-off portion 4013, that is, first cut-off portion 4011 and first cut-off portion 4013 are two first cut-off portions 401 located on the same first electrode wire 10 and having the smallest distance in the X direction. For example, in Figure 2 In this context, two adjacent first cut-off portions 401 in direction X can also be first cut-off portions 4012 and 4013, that is, first cut-off portions 4012 and 4013 are two first cut-off portions 401 located on two different first electrode wires 10 and having the smallest distance in direction X. For example, when the number of second electrode wires 20 between the two first cut-off portions 401 located on the same first electrode wire 10 and having the smallest distance in direction X is the same as the number of second electrode wires 20 between the two first cut-off portions 401 located on two different first electrode wires 10 and having the smallest distance in direction X, preferably, two adjacent first cut-off portions 401 in direction X are two first cut-off portions 401 located on the same first electrode wire 10 and having the smallest distance in direction X. That is, preferably, in Figure 2 In the electrode structure 02 shown, two adjacent first cut-off portions 401 in the direction X can be first cut-off portion 4011 and first cut-off portion 4013.

[0083] For example, one end of the first electrode wire portion 101 located between two adjacent first disconnection portions 401 coincides with at least one end of one of the two adjacent first disconnection portions 401, that is, the extending direction of the first electrode wire portion 101 located between two adjacent first disconnection portions 401 is at least the same as the extending direction of one of the two adjacent first disconnection portions 401. For example, the first electrode wire portion 101 between two adjacent first disconnection portions 401 in direction X, such as first disconnection portion 4011 and first disconnection portion 4013, can be the first electrode wire portion 1011.

[0084] For example, refer to Figure 2When the minimum distance between two adjacent overlapping portions 30 of the same first electrode wire 10 in its extension direction (i.e. in direction X) is a first spacing M, the spacing between two adjacent first cut-off portions 401 when at least two second electrode wires 20 are disposed therein in direction X (e.g., the spacing between the first cut-off portion 4011 and the first cut-off portion 4013 in direction X) is at least M, but the embodiments of this disclosure are not limited thereto.

[0085] For example, refer to Figure 2 In electrode structure 02, along the extension direction X of a first electrode wire 10, the number of second electrode wires 20 overlapping with portions of the first electrode wire 10 on both sides of the same first cut-off portion 401 is equal, and both are the first number. Simultaneously, the first electrode wire has at least one first cut-off portion.

[0086] For example, refer to Figure 2 In electrode structure 02, along the arrangement direction of a first electrode wire 10, i.e., the Y direction, the number of second electrode wires 20 overlapping on both sides of the same first cut-off portion 401 of another first electrode wire 10 spaced apart from that first electrode wire 10 is equal, and all are the second number. Simultaneously, the other first electrode wire has at least one first cut-off portion.

[0087] For example, in Figure 2 In the electrode structure 02 shown, the first quantity is equal to the second quantity.

[0088] For example, refer to Figure 2 Along the extension direction X of the first electrode wire 10, in the first electrode wire 10 where the first cut-off portion 4013 is located, the portion on one side of the first cut-off portion 4013 can be a first electrode wire sub-portion 1011 located between the first cut-off portion 4011 and the first cut-off portion 4013. The number of second electrode wires 20 overlapping with the first electrode sub-portion 1011 is 2, that is, the first quantity is 2. At the same time, in the first electrode wire 10 where the first cut-off portion 4013 is located, the number of second electrode wires 20 overlapping between the portions located on both sides of any one of the first cut-off portions 40 is also 2.

[0089] For example, refer to Figure 2Along the Y-direction of the arrangement of the first electrode wires 10, the first electrode wires 10 spaced apart from the first electrode wires 10 where the first cut-off portion 4013 is located can be first electrode wires 10 adjacent to the first electrode wires 10 where the first cut-off portion 4013 is located and having at least one first cut-off portion 40, for example, the first electrode wire 10 where the first cut-off portion 4012 is located. For example, along the X-direction of the extension of the first electrode wires 10, the number of second electrode wires 20 overlapping with the first electrode wires 10 where the first cut-off portion 4012 is located on both sides of the first electrode wire 10 can be the number of second electrode wires 20 overlapping with the first electrode sub-wire portion 1012, that is, the second number is 2. At the same time, in the first electrode wires 10 where the first cut-off portion 4012 is located, the number of second electrode wires 20 overlapping with each of the first electrode wires 10 located on both sides of any one of the first cut-off portions 40 is 2. At this time, in Figure 2 The first and second quantities in the electrode structure 02 shown are both 2, but the embodiments of this disclosure are not limited thereto.

[0090] This configuration allows for a more uniform distribution of the multiple cut-off portions 40 in the X or Y direction of the electrode structure 02, which helps improve the stress distribution of the electrode structure 02, enabling it to have good flexibility while playing a good ablation role in all parts.

[0091] Figure 3 A schematic diagram of a portion of yet another electrode structure provided for at least one embodiment of this disclosure; Figure 4 A schematic diagram of a portion of another electrode structure provided for at least one embodiment of this disclosure.

[0092] For example, refer to Figure 3 Compared to Figure 2 In the electrode structure 02 shown, and in the electrode structure 03, the first number of second electrode wires 20 overlapping with the portions of one first electrode wire 10 on both sides of the same first cut-off portion 401 along the extension direction of the first electrode wire 10, i.e., along direction X, is 3. The second number of second electrode wires 20 overlapping with the portions of another first electrode wire 10 on both sides of the same first cut-off portion 401 along the arrangement direction of the first electrode wires 10, i.e., direction Y, is also 3.

[0093] For example, along the arrangement direction of the first electrode wire 10, i.e., direction Y, two adjacent first cut-off portions 401 can be as follows: Figure 3The two first disconnected portions 401 shown are located between the same two second electrode wires 20. For example, in the direction X, the two second electrode wires 20 connected to both ends of the first disconnected portion 401 are arranged at intervals with the two second electrode wires 20 connected to both ends of the adjacent first disconnected portion 401, but the embodiments of this disclosure are not limited to this.

[0094] For example, refer to Figure 4 Compared to electrode structure 02, in electrode structure 04, along the arrangement direction of the first electrode wire 10, i.e. direction Y, two adjacent first disconnected portions 401 are located in two adjacent first electrode wires 10. For example, along the extension direction of the first electrode wire 10, i.e. direction X, only one second electrode wire 20 is provided between two adjacent first disconnected portions 401.

[0095] For example, refer to Figure 4 Along the Y-direction of the arrangement of the first electrode wire 10, the two second electrode wires 20 adjacent to one of the two adjacent first cut-off portions 401 are different from the two second electrode wires 20 adjacent to the other of the two adjacent first cut-off portions 401.

[0096] For example, for such Figure 4 The two adjacent first disconnection portions 401 shown can have two second electrode wires adjacent to one of them, which can be second electrode wire 2011 and second electrode wire 2012 respectively; and two second electrode wires adjacent to the other first disconnection portion 401 can be second electrode wire 2012 and second electrode wire 2013 respectively. Therefore, for such... Figure 4 The two adjacent second electrode wires 20 of each of the two adjacent first disconnection sections 401 shown are different.

[0097] This configuration allows for a larger number of first cut-off portions 40 in the electrode structure 04 and a more uniform distribution of the multiple first cut-off portions 40, thereby effectively improving the flexibility of the electrode structure 04 and achieving a good ablation effect.

[0098] Figure 5 A schematic diagram of a portion of another electrode structure provided for at least one embodiment of this disclosure.

[0099] For example, refer to Figure 5 Compared to Figure 4 In the electrode structure 04 shown, in the electrode structure 05, at least one first electrode wire 10 is provided between two adjacent first cut-off portions 401 along the arrangement direction of the first electrode wire 10, i.e., direction Y.

[0100] For example, for such Figure 5 The two adjacent first cut-off portions 401 shown are also different from the two second electrode wires 20 adjacent to each first cut-off portion 401. For example, the distance between two adjacent first cut-off portions 401 in the X direction is at least M. For example, the number of first electrode wires 10 spaced between the second electrode wires 20 on both sides of any first cut-off portion 401 and adjacent to that first cut-off portion 401 can be different. For example, for a first cut-off portion 4014, the second electrode wires on both sides can be second electrode wire 2014 and second electrode wire 2015. The number of first electrode wires 10 spaced between the second electrode wire 2014 and second electrode wire 2015 and adjacent to the first cut-off portion 4014, such as the first cut-off portion 4015, can be 3 or more, but the embodiments of this disclosure are not limited to this.

[0101] This arrangement allows for a more flexible distribution of the multiple first disconnection portions 401 in the electrode structure 05. The multiple first disconnection portions 401 can be placed in different positions according to design requirements, and they can be kept at appropriate intervals to enhance applicability.

[0102] Figure 6 A schematic diagram of a portion of another electrode structure provided for at least one embodiment of this disclosure.

[0103] For example, refer to Figure 6 Compared to Figure 5 The electrode structure 05 shown is in electrode structure 06, where multiple first electrode wires 10 include multiple first electrode wire groups 11, and each first electrode wire group 11 includes at least two adjacent first electrode wires 10.

[0104] For example, refer to Figure 6 Along the arrangement direction Y of the first electrode wires 10, at least two adjacent first electrode wires 10 in the first electrode wire group 11 include a first cut-off portion 401, and the first cut-off portion 401 included in each of the at least two adjacent first electrode wires 10 is arranged adjacent to each other, and two adjacent first cut-off portions 401 along the direction Y are located between the same two second electrode wires 20.

[0105] For example, refer to Figure 6Along direction X, the spacing between two adjacent first electrode wire groups 11 can be the same, for example, it can be M. Of course, in some embodiments of this disclosure, the spacing between two adjacent first electrode wire groups 11 along direction X can also be 2M, 3M, etc. For example, the spacing between two adjacent first electrode wire groups 11 along direction X can also be different, but the embodiments of this disclosure are not limited to this.

[0106] For example, refer to Figure 6 Along the arrangement direction Y of the first electrode wires 10, each first electrode wire group 11 includes at least four first electrode wires 10, and the number of first electrode wires 10 included in each first electrode wire group 11 is the same. For example, in some embodiments of this disclosure, the number of overlapping first electrode wires 10 in each of the multiple first electrode wire groups 11 may also be different, such as 5, 6, 8, etc., but the embodiments of this disclosure are not limited to this. For example, in each first electrode wire group 11, at least two first electrode wires 10 located at opposite edges in the direction Y each include a first cut-off portion 40. For example, in each first electrode wire group 11, the spacing between two first electrode wires 10 located at opposite edges in the direction Y is at least 3L, but the embodiments of this disclosure are not limited to this.

[0107] For example, refer to Figure 6 At least three first electrode wires 10 are disposed between two second electrode wires 20 and between two adjacent first electrode wire groups 11 in the Y direction, that is, the distance between two adjacent first electrode wire groups 11 is at least 2L, but the embodiments of this disclosure are not limited to this. For example, at least two second electrode wires 20 are disposed between two adjacent first electrode wire groups 11 in the X direction, and the second electrode wires 20 on both sides of each of the two adjacent first electrode wire groups 11 are different, and the distance between the two adjacent first electrode wire groups 11 is at least M, but the embodiments of this disclosure are not limited to this.

[0108] Therefore, by setting multiple first electrode wire groups 11, the flexibility of the electrode structure 06 can be further enhanced, and a certain number of first electrode wires 10 or second electrode wires 20 can be provided between adjacent first electrode wire groups 11 to ensure the ablation efficiency of the electrode structure 06.

[0109] For example, refer to Figure 1In some embodiments of this disclosure, multiple first cut-off portions 401 and multiple first electrode wire groups 11 can be simultaneously provided in the electrode structure 01. For example, the two second electrode wires 20 located on both sides of the first electrode wire group 11 can be the same as the two second electrode wires 20 on both sides of the multiple first cut-off portions 401, but the embodiments of this disclosure are not limited to this. For example, in the electrode structure 01, two adjacent first cut-off portions 401 in the Y direction can be located in two adjacent first electrode wires 10. For example, in the Y direction, the distance between the two second electrode wires 20 located on both sides of the same first cut-off portion 401, and the distance between the first cut-off portions 401 adjacent to both sides of the same first cut-off portion 401 and the same first cut-off portion 401, can be unequal, but the embodiments of this disclosure are not limited to this.

[0110] Figure 7 A schematic diagram of a portion of another electrode structure provided for at least one embodiment of this disclosure.

[0111] For example, refer to Figure 7 Compared to Figure 2 The electrode structure 02 shown, in the electrode structure 07, also includes a second cut-off portion 402. For example, in the electrode structure 07, at least one cut-off portion 40 located between two adjacent connecting portions 50 in the extension direction of the second electrode wire 20, i.e., direction X, is the second cut-off portion 402.

[0112] For example, refer to Figure 7 In electrode structure 07, the definition of two adjacent second cut-off portions 402 in directions X and Y can be the same as or similar to the definition of two adjacent first cut-off portions 401 in the above embodiment, and will not be repeated here.

[0113] For example, refer to Figure 7 Along the arrangement direction of the second electrode wires 20, at least one second electrode wire 20 is provided between two adjacent second disconnected portions 402. That is, in direction X, the distance between two adjacent second disconnected portions 402 is at least 2M, but the embodiments of this disclosure are not limited to this.

[0114] For example, refer to Figure 7The multiple first disconnection portions 401 and multiple second disconnection portions 402 can be distributed in different regions, but the embodiments of this disclosure are not limited thereto. For example, the multiple first disconnection portions 401 can be mainly distributed in region A1, and the multiple second disconnection portions 402 can be mainly distributed in region A2. For example, region A1 and region A2 can be two adjacent regions, but the embodiments of this disclosure are not limited thereto. For example, the arrangement of the multiple second disconnection portions 402 located in region A2 can be the same as or similar to the arrangement of the multiple first disconnection portions 401 in the above embodiments, or it can be a combination of at least two of the arrangement methods in the above embodiments, which will not be elaborated here.

[0115] By setting multiple first cut-off portions 401 and multiple second cut-off portions 402 in the electrode structure 07, the stress in the electrode structure 07 in the X and Y directions can be effectively improved, so that the electrode structure 07 has good flexibility in different directions, thereby enhancing the convenience of ablation operation.

[0116] For example, refer to Figure 7 In electrode structure 07, within region A1, four overlapping portions 30 are sequentially connected to form a first quadrilateral 105, which are formed by two first electrode wires 10 adjacent to the first electrode wire 10 having a first cut-off portion 401 in the arrangement direction Y of the first electrode wire 10 and two second electrode wires 20 connected to the connecting portions 50 at both ends of the first cut-off portion 401.

[0117] For example, refer to Figure 7 In electrode structure 07, the two first electrode wires 10 adjacent to the first electrode wire 10 having the first cut-off portion 401 in the Y-direction of the first electrode wire 10 can be first electrode wire 1013 and first electrode wire 1014, respectively. The two second electrode wires 20 connected to the connecting portions 50 at both ends of the first cut-off portion 401 can be second electrode wire 2016 and second electrode wire 2017, respectively. Thus, the first quadrilateral 105 can be formed by sequentially connecting four overlapping portions 30 formed by the overlapping of the first electrode wire 1013, the first electrode wire 1014, the second electrode wire 2016, and the second electrode wire 2017, but the embodiments of this disclosure are not limited to this.

[0118] For example, refer to Figure 7 In electrode structure 07, within region A2, four overlapping portions 30 formed by the overlapping of two second electrode wires 20 adjacent to the second electrode wire 20 having the second cut-off portion 402 in the arrangement direction of the second electrode wire 20 (i.e., in direction X) and two first electrode wires 10 connected to the connecting portions 50 at both ends of the second cut-off portion 402 are sequentially connected to form a second quadrilateral 205.

[0119] For example, refer to Figure 7 In electrode structure 07, the two second electrode wires 20 adjacent to the second electrode wire 20 having the second cut-off portion 402 in the arrangement direction (i.e., direction X) of the second electrode wires 20 can be the second electrode wire 2018 and the second electrode wire 2019, respectively. The two first electrode wires 10 connected to the connecting portions 50 at both ends of the second cut-off portion 402 can be the first electrode wire 1015 and the first electrode wire 1016, respectively. Thus, the second quadrilateral 205 can be formed by sequentially connecting four overlapping portions 30 formed by the overlapping of the first electrode wire 1015, the first electrode wire 1016, the second electrode wire 2018, and the second electrode wire 2019, but the embodiments of this disclosure are not limited to this.

[0120] For example, refer to Figure 7 In electrode structure 07, the shapes of the plurality of first quadrilaterals 105 within region A1 may not be identical. For example, the first quadrilateral 105 may include at least one of a square, a rectangle, and a parallelogram, but the embodiments of this disclosure are not limited thereto. Similarly, the shapes of the plurality of second quadrilaterals 205 within region A2 may also not be identical. For example, the second quadrilateral 205 may include at least one of a square, a rectangle, and a parallelogram, but the embodiments of this disclosure are not limited thereto.

[0121] For example, refer to Figure 6 and Figure 7 The areas of the multiple first quadrilaterals 105 within region A1 may not be identical. For example, the multiple first quadrilaterals 105 may include first quadrilaterals 1051 and 1052. For example, region A1 may also include at least one first electrode wire group 11, formed by four overlapping portions 30 sequentially connected by two first electrode wires 10 within the first electrode wire group 11 and two second electrode wires 20 connected to the connecting portions 50 at both ends of the first cut-off portion 401 within the first electrode wire group 11. For example, the area of ​​the first quadrilateral 1051 is greater than... Figure 7 The area of ​​the first quadrilateral 1052 shown is illustrated, but the embodiments of this disclosure are not limited thereto. For example, when the number of first disconnected portions 401 in each of the first electrode wire groups 11 is not the same, the area of ​​the first quadrilateral 1051 may also be unequal. Similarly, the areas of the plurality of second quadrilaterals 205 in region A2 may also not be completely identical, which will not be elaborated here.

[0122] For example, refer to Figure 7In the electrode structure 07, along the extension direction of the second electrode wire 20, i.e. in direction Y, the portion of the second electrode wire 20 located between two adjacent second cut-off portions 402 is the second electrode wire sub-portion 201, and the second electrode wire sub-portion 201 overlaps with at least two first electrode wires 10.

[0123] For example, along the extension direction of the second electrode wire 20, one end of the second electrode wire portion 201 located between two adjacent second cut-off portions 402 coincides with at least one end of one of the two adjacent second cut-off portions 402, and the extension direction of the second electrode wire portion 201 located between two adjacent second cut-off portions 402 is at least the same as, or substantially the same as, the extension direction of one of the two adjacent second cut-off portions 402.

[0124] For example, refer to Figure 7 In the Y direction, the distance between two adjacent second cut-off portions 402 located on the same second electrode wire 20 is at least L, that is, the length of the second electrode wire sub-portion 201 is at least L, but the embodiments of this disclosure are not limited to this. Thus, while enhancing the flexibility of the electrode structure 07 by providing multiple second cut-off portions 402, the density of the second electrode wires 20 of the electrode structure 07 can be maintained at an appropriate level to better ensure the effectiveness of the electrode structure 07 during ablation operations.

[0125] Figure 8 A schematic diagram of a portion of another electrode structure provided for at least one embodiment of this disclosure.

[0126] For example, refer to Figure 8 In the electrode structure 08, multiple first disconnection portions 401 and multiple second disconnection portions 402 may be located in the same region, and the multiple first disconnection portions 401 and multiple second disconnection portions 402 may have a variety of different combinations.

[0127] For example, refer to Figure 8 In the electrode structure 08, along the arrangement direction of the second electrode wires 20, i.e. direction X, at least two second electrode wires 20 can be provided between two adjacent first cut-off portions 401, and at least one second electrode wire 20 can be provided between two adjacent second cut-off portions 402.

[0128] For example, refer to Figure 8 In the electrode structure 08, along the extension direction of the second electrode wire 20, i.e. direction Y, at least one first electrode wire 20 is provided between two adjacent first cut-off portions 401, and at least two first electrode wires 10 are provided between two adjacent second cut-off portions 402.

[0129] For example, refer to Figure 8 The second electrode wire 20, which is located in the second cut-off portion 402 adjacent to the first cut-off portion 401, overlaps with the first electrode wire 10, which is located in the first cut-off portion 401, and is connected at the overlap position 412. One end of the first cut-off portion 401 and one end of the second cut-off portion 402 coincide at the overlap position 412.

[0130] For example, refer to Figure 8 In electrode structure 08, in direction X, at least two second electrode wires 20 are provided between two adjacent first disconnected portions 401, and at least one second electrode wire 20 is provided between two adjacent second disconnected portions 402. That is, in direction X, two adjacent first disconnected portions 401 are located in different first electrode wires 10 with a spacing of M, but the embodiments of this disclosure are not limited to this. Two adjacent second disconnected portions 402 are located in different second electrode wires 20 with a spacing of L, but the embodiments of this disclosure are not limited to this.

[0131] For example, refer to Figure 8 In the electrode structure 08, in the direction Y, the distance between two adjacent first cut-off portions 401 is 2L, and the distance between two adjacent second cut-off portions 402 is L, but the embodiments of this disclosure are not limited thereto.

[0132] For example, in some embodiments of this disclosure, only one second electrode wire 20 may be provided between two adjacent first disconnection portions 401 in the X direction. Two adjacent second disconnection portions 402 may be located in two adjacent second electrode wires 20, but the embodiments of this disclosure are not limited thereto, and can be set according to design requirements.

[0133] For example, refer to Figure 8 In electrode structure 08, the second disconnection portion 402 adjacent to the first disconnection portion 401 is the second disconnection portion 402 that is closest to the first disconnection portion 401. For example, in Figure 8 In the first cut-off portion 401, the first cut-off portion 401 intersects with the adjacent second cut-off portion 402. The angle between the first cut-off portion 401 and the adjacent second cut-off portion 402 is the angle between the second electrode wire 20 where the second cut-off portion 402 is located and the first electrode wire 10 where the first cut-off portion 401 is located. For example, this angle is an acute angle, but the embodiments of this disclosure are not limited to this.

[0134] This configuration ensures that the number of the first break portion 401 and the second break portion 402 are essentially the same and their distribution is relatively uniform. This collectively improves the stress distribution of the electrode structure 08 in the X and Y directions, resulting in greater flexibility at the locations where the first break portion 401 and the second break portion 402 are located. This effectively enhances the performance of the electrode structure 08.

[0135] For example, refer to Figure 8 In the electrode structure 08, the first electrode wire 10 containing the first cut-off portion 401, the second electrode wire 20 containing the second cut-off portion 402 adjacent to the first cut-off portion 401, the two first electrode wires 10 adjacent to the first electrode wire 10 containing the first cut-off portion 401 in the arrangement direction Y of the first electrode wires 10, and the two second electrode wires 20 adjacent to the second electrode wire 20 containing the second cut-off portion 402 adjacent to the first cut-off portion 401 in the arrangement direction of the second electrode wires 20 overlap with each other to form six overlapping portions 30 at the overlapping positions. The pattern 430 formed by the six overlapping portions 30 connected in sequence is "heart-shaped".

[0136] For example, Figure 8 The heart-shaped pattern 430 in electrode structure 08 is shown. For example, see reference. Figure 8 When the same "heart" pattern 430 is formed, the first electrode wire 10 where the first cut-off portion 401 is located can be the first electrode wire 1017, the second electrode wire 20 where the second cut-off portion 402 adjacent to the first cut-off portion 401 is located can be the second electrode wire 2020, the two first electrode wires 10 adjacent to the first electrode wire 10 in the arrangement direction (i.e. direction Y) can be the first electrode wire 1018 and the first electrode wire 1019 respectively, and the two second electrode wires 20 adjacent to the second electrode wire 2020 in the arrangement direction (i.e. direction X) can be the second electrode wire 2021 and the second electrode wire 2022. Thus, the first electrode wire 1017, the second electrode wire 2020, the first electrode wire 1018, the second electrode wire 2021, the first electrode wire 1019, and the second electrode wire 2022 are sequentially overlapped to form six overlapping portions 30, such as overlapping portions 3001, 3002, 3003, 3004, 3005, and 3006.

[0137] For example, refer to Figure 8The multiple heart-shaped patterns 430 in the electrode structure 08 may not be completely identical. For example, the areas of the multiple heart-shaped patterns 430 may differ. For example, the area of ​​each heart-shaped pattern 430 may be at least 3L*M, but the embodiments of this disclosure are not limited thereto. For example, the number of heart-shaped patterns 430 in the electrode structure 08 may be determined according to design requirements, and may also be combined with the arrangement scheme of the first cut-off portion 401 or the second cut-off portion 402 in the above embodiments, which is not limited in the embodiments of this disclosure.

[0138] Figure 9 A schematic diagram of a portion of another electrode structure provided for at least one embodiment of this disclosure.

[0139] For example, refer to Figure 9 The combination of the first disconnection part 401 and the second disconnection part 402 is different. Figure 8 Electrode structure 08. In electrode structure 09, the first disconnection portion 401 and the second disconnection portion 402 have an intersection portion.

[0140] For example, refer to Figure 9 Along the extension direction of the first electrode wire 10, i.e., direction X, at least one first electrode wire 10 is provided between two adjacent first cut-off portions 401. At least one second electrode wire 20 having a second cut-off portion 402 is provided between the second electrode wires 20 where the connecting portions 50 on both sides of each first cut-off portion 401 are located.

[0141] For example, refer to Figure 9 Along the extension direction of the second electrode wire 20, i.e. direction Y, at least one first electrode wire 10 having a first cut-off portion 401 is provided between the first electrode wires 10 where the connecting portions 50 on both sides of each second cut-off portion 402 are located.

[0142] For example, refer to Figure 9 The electrode structure 09 includes a plurality of first disconnection portions 401 and a plurality of second disconnection portions 402. Each first disconnection portion 401 and each second disconnection portion 402 forms an intersecting combination, and the two endpoints of the first disconnection portion 401 and the two endpoints of the intersecting second disconnection portion 402 do not overlap. For example, for a set of intersecting first disconnection portions 401 and second disconnection portions 402, the center of the first disconnection portion 401 may coincide with the center of the second disconnection portion 402, but the embodiments of this disclosure are not limited thereto.

[0143] For example, refer to Figure 9In the electrode structure 09, the dimension of each first cut-off portion 401 in the extension direction of the first electrode wire 10 is not less than 2M, and the dimension of each second cut-off portion 402 in the extension direction of the second electrode wire 20 is not less than 2L, but the embodiments of this disclosure are not limited thereto.

[0144] For example, refer to Figure 9 In the electrode structure 09, the number of first electrode wires 10 between two adjacent first cut-off portions 401 in the direction X can be unequal, for example, two, three or four, etc. The embodiments of this disclosure do not limit this.

[0145] For example, refer to Figure 9 Within region A3, multiple second electrode wires 20 with second cut-off portions 402 can be provided between the second electrode wires 20 where the connecting portions 50 on both sides of each first cut-off portion 401 are located, and the multiple second electrode wires 20 have multiple adjacent second cut-off portions 402. At this time, the dimension of the connecting portions 50 on both sides of the first cut-off portion 401 in the extension direction (i.e., direction X) of the second electrode wire 20 is not less than 3M, but the embodiments of this disclosure are not limited to this.

[0146] For example, refer to Figure 9 Within region A4, multiple first electrode wires 10 with first cut-off portions 401 can be provided between the first electrode wires 10 where the connecting portions 50 on both sides of each second cut-off portion 402 are located, and the multiple first electrode wires 10 have multiple adjacent first cut-off portions 401. At this time, the dimension of the connecting portions 50 on both sides of the second cut-off portion 402 in the extension direction (i.e., direction Y) of the first electrode wire 10 is not less than 3L, but the embodiments of this disclosure are not limited to this.

[0147] For example, refer to Figure 9 In the electrode structure 09, four overlapping portions 30 formed by the overlapping of two first electrode wires 10 with the first electrode wire 10 having the first cut-off portion 401 in the arrangement direction of the first electrode wire 10 (i.e., in the direction Y) and two second electrode wires 20 with the second cut-off portion 402 in the arrangement direction of the second electrode wire 20 are connected in sequence to form a third quadrilateral 305.

[0148] For example, refer to Figure 9The first cut-off portion 401 and the second cut-off portion 402 are combined in an intersecting manner. Two adjacent first electrode wires 10 with the first cut-off portion 401 in the Y-direction of the first electrode wires 10 can be first electrode wire 1020 and first electrode wire 1021. Similarly, two adjacent second electrode wires 20 with the second cut-off portion 402 in the Y-direction of the second electrode wires 20 can be second electrode wire 2023 and second electrode wire 2024. Thus, the first electrode wire 1020, second electrode wire 2023, first electrode wire 1021, and second electrode wire 2024 overlap each other, forming overlapping portions 3007, 3008, 3009, and 3010. These four overlapping portions are connected to form a third quadrilateral 305.

[0149] For example, refer to Figure 9 In electrode structure 09, the area of ​​the third quadrilateral 305 is at least 4M*L, but the embodiments of this disclosure are not limited to this. For example, the area of ​​the third quadrilateral 305 in regions A3 and A4 is at least 6M*L. For example, the area of ​​the third quadrilateral 305 can be an even multiple of M*L, such as 8M*L, 10M*L, etc., but the embodiments of this disclosure are not limited to this.

[0150] For example, refer to Figure 9 In electrode structure 09, the minimum area of ​​the quadrilateral 306 formed by the overlapping part 30 formed by the overlapping of two adjacent first electrode wires 10 and two adjacent second electrode wires 20 is 1 / 5 to 1 / 2 of the area of ​​the third quadrilateral 305.

[0151] For example, the minimum area of ​​quadrilateral 306 is the minimum area unit of the quadrilateral formed by multiple first electrode wires 10 and multiple second electrode wires 20. For example, the minimum area of ​​quadrilateral 306 can be M*L. For example, the areas of multiple third quadrilaterals 305 can be unequal. For example, the area of ​​the third quadrilateral 305 can be 2-3 times, 2.5-3.5 times, 4-5 times, etc., of quadrilateral 306, and the embodiments of this disclosure do not limit this.

[0152] Figure 10 A schematic diagram of a portion of another electrode structure provided for at least one embodiment of this disclosure.

[0153] For example, refer to Figure 10The electrode structure 010 is woven from multiple first electrode wires 10 and multiple second electrode wires 20, and the overall shape of the electrode structure 010 is irregular. For example, the interior of the electrode structure 010 is hollow. For example, the electrode structure 010 includes a first connecting segment 71, an intermediate segment 72, and a second connecting segment 73 connected in sequence, with the intermediate segment 72 located between the first connecting segment 71 and the second connecting segment 73. For example, when the electrode structure 010 is configured to be in the working state, the intermediate segment 72 is frustum-shaped, and along the direction from the first connecting segment 71 to the second connecting segment 73, the inner diameter of the first connecting segment 71 gradually increases, the inner diameter of the intermediate segment 72 gradually increases, and the inner diameter of the second connecting segment 73 gradually decreases.

[0154] For example, refer to Figure 10 The volume of the first connecting segment 71 is smaller than the volume of the second connecting segment 73, and the volume of the second connecting segment 73 is smaller than the volume of the intermediate segment 72, but the embodiments of this disclosure are not limited thereto. For example, both the first connecting segment 71 and the third connecting segment 73 include a fixed segment, the fixed segment of the first connecting segment 71 being located at the end of the first connecting segment 71 away from the third connecting segment 73, and the fixed segment of the third connecting segment 73 being located at the end of the third connecting segment 73 away from the first connecting segment 71. For example, the inner diameters of the fixed segments of the first connecting segment 71 and the third connecting segment 73 are equal or approximately equal. For example, the inner diameter of the fixed segment of the first connecting segment 71 is smaller than the inner diameter of other parts of the first connecting segment 71, and the inner diameter of the fixed segment of the third connecting segment 73 is smaller than the inner diameter of other parts of the third connecting segment 73, but the embodiments of this disclosure are not limited thereto. For example, the fixing section of the first connecting section 71 and the fixing section of the third connecting section 73 are configured to fix the electrode structure 010 in other components of the ablation device, such as to a pull rod or a conduit, so as to open or close the electrode structure 010.

[0155] For example, refer to Figure 10 The portion of the first connecting segment 71, excluding its fixed segment, is generally conical, and the portion of the third connecting segment 73, excluding its fixed segment, is also generally conical. The intermediate segment 72 is frustum-shaped, and the inner diameter of the portion of the intermediate segment 72 near the first connecting segment 71 is smaller than the inner diameter of the portion near the third connecting segment 73, but the embodiments of this disclosure are not limited thereto.

[0156] This configuration allows the electrode structure 010 to be applied to natural channels with uneven inner diameters, thus providing greater flexibility and enhancing the ablation effect of the electrode structure 010.

[0157] For example, refer to Figure 10 The electrode structure 101 may also include a plurality of first disconnection portions 401, second disconnection portions 402, and combinations of first disconnection portions 401 and second disconnection portions 402 as described in the above embodiments.

[0158] For example, refer to Figure 10 The electrode structure 101 may include a plurality of first electrode wire groups 11, and along the arrangement direction Y of the first electrode wires 10, at least two adjacent first electrode wires 10 in the first electrode wire group 11 include a first cut-off portion 401, and the first cut-off portions 401 of the at least two adjacent first electrode wires 10 are arranged adjacently and located between the same two second electrode wires 20. For example, the first cut-off portion 401 and the second cut-off portion 402 may also be a combination with intersecting portions, as specifically referred to in the above embodiments corresponding to Figure 9 The relevant descriptions are not repeated here. For example, the electrode structure 101 may also include a plurality of first disconnection portions 401 arranged at intervals in the X or Y direction, or a plurality of second disconnection portions 402 arranged at intervals in the X or Y direction. For example, in the electrode structure 101, first disconnection portions 401 and second disconnection portions 402 arranged in different ways may be provided in different regions, and the embodiments of this disclosure do not limit this.

[0159] For example, refer to Figure 10 In the electrode structure 101, the plurality of first disconnection portions 401 and the plurality of second disconnection portions 402 can be arranged in one of the above embodiments or in a combination of multiple arrangements. For details, please refer to the relevant descriptions in the above embodiments. The embodiments disclosed herein do not limit this.

[0160] Figure 11 A schematic diagram of a portion of another electrode structure provided for at least one embodiment of this disclosure.

[0161] For example, refer to Figure 11 Electrode structure 011 and Figure 10 The difference between the electrode structure 010 and the middle section 75 and the middle section 72 is that the structures of the middle section 75 and the middle section 72 are different, while the rest are the same.

[0162] For example, refer to Figure 11 The electrode structure 011 includes a first connecting segment (not shown in the figure), an intermediate segment 75, and a second connecting segment (not shown in the figure) connected in sequence, with the intermediate segment 75 located between the first connecting segment and the second connecting segment. When the electrode structure 01 is configured to be in the working state, the intermediate segment 75 is cylindrical, and along the direction from the first connecting segment to the second connecting segment, the inner diameter of the first connecting segment gradually increases, the inner diameter of the intermediate segment 75 remains unchanged, and the inner diameter of the second connecting segment gradually decreases.

[0163] For example, refer to Figure 11 The first and second connecting segments of electrode structure 011 can be seen in... Figure 10The relevant descriptions of the first connecting segment 71 and the second connecting segment 73 are not repeated here. For example, "the inner diameter of the intermediate segment 75 remains unchanged" means that the inner diameter of the intermediate segment 75 remains unchanged or approximately unchanged. Thus, the electrode structure 011 can be used in natural cavities with little change in inner diameter to enhance the ablation effect on the ablated tissue.

[0164] For example, refer to Figure 11 The electrode structure 011 may also include a plurality of first disconnection portions 401, second disconnection portions 402, and combinations of the first disconnection portions 401 and the second disconnection portions 402 as described in the above embodiments. For example, the plurality of first disconnection portions 401 and the plurality of second disconnection portions 402 may be one arrangement or a combination of multiple arrangements as described in the above embodiments. For details, please refer to the relevant descriptions in the above embodiments. The embodiments disclosed herein do not limit this.

[0165] For example, refer to Figure 10 and Figure 11 The cross-section of electrode structure 010 or electrode structure 011 in the direction perpendicular to the first connecting segment and pointing to the second connecting segment is circular; that is, the cross-section of electrode structure 010 or electrode structure 011 along its respective radial direction is circular. For example, in some embodiments of this disclosure, the cross-section of the electrode structure in the direction perpendicular to the first connecting segment and pointing to the second connecting segment may also be elliptical, but the embodiments of this disclosure are not limited thereto. For example, an electrode structure with an elliptical cross-section can be applied to natural cavities with elliptical cross-sections, or to other non-circular natural cavities with irregular cross-sections, thereby making the electrode structure more adaptable and achieving better ablation effect.

[0166] For example, in at least one embodiment of this disclosure, the weaving method of the plurality of first electrode wires and the plurality of second electrode wires in the electrode structure can be diversified according to design requirements, and this disclosure does not limit it.

[0167] Figure 12 A schematic diagram of an electrode structure with a support structure provided for at least one embodiment of the present disclosure; Figure 13 A schematic diagram of an electrode structure with another support structure provided for at least one embodiment of this disclosure; Figure 14 A schematic diagram of an electrode structure with another support structure provided for at least one embodiment of the present disclosure.

[0168] For example, refer to Figure 12In the electrode structure 015, a support structure 130 may also be provided. For example, the electrode structure 015 may also include a first connecting segment (not shown in the figure), an intermediate segment 76, and a second connecting segment (not shown in the figure). For example, the intermediate segment 76 is cylindrical. For example, the intermediate segment 76 may be similar to the one described in the above embodiment. Figure 11 The structure of the middle section 75 of the electrode structure 011 is the same or substantially the same, but the embodiments of this disclosure are not limited thereto. For the features of the first connecting section, the middle section 76, and the second connecting section of the electrode structure 015, please refer to the above embodiments regarding... Figure 11 The relevant explanations will not be repeated here.

[0169] For example, refer to Figure 12 The electrode structure 015 includes a support structure 130 disposed on the inner sidewall of the cylinder. The support structure 130 is elongated and its extension direction is perpendicular to the circumferential direction of the cylinder.

[0170] For example, refer to Figure 12 In electrode structure 015, the cylindrical inner wall refers to the inner wall of the middle section 76. For example, the extension direction of support structure 130 is the Z direction, but the embodiments of this disclosure are not limited thereto. For example, support structure 130 may be made of the same material as the first electrode wire 10 or the second electrode wire 20, but the embodiments of this disclosure are not limited thereto. For example, each support structure 130 is sequentially connected to a plurality of overlapping portions 30 arranged in the Z direction, for example, by welding, but the embodiments of this disclosure are not limited thereto.

[0171] For example, refer to Figure 12 When a support structure 130 is provided in the electrode structure 015, the electrode structure 015 is opened in the working state. The support structure 130 can increase the rigidity of the middle section 76 of the electrode structure 015, making the inner diameter of the electrode structure 015 in the middle section 76 more uniform, rather than having the largest diameter only in the middle of the middle section 76 and the inner diameter gradually decreasing on both sides of the middle section 76. Therefore, the provision of the support structure 130 can reduce the risk of only localized increase in the inner diameter of the electrode structure 015, thereby maintaining or increasing the contact area between the middle section 76 and the natural cavity, which is conducive to enhancing the ablation effect of the electrode structure 015.

[0172] For example, refer to Figure 12 In the electrode structure 015, the electrode structure 015 may include a plurality of support structures 130, and the plurality of support structures 130 are arranged sequentially along the circumference of the cylinder. For example, the plurality of support structures 130 are evenly spaced along the inner wall of the middle section 76 of the cylinder, but the embodiments of this disclosure are not limited thereto.

[0173] This configuration allows for uniform support at various locations within the electrode structure 015, ensuring good uniformity of the inner diameter of the middle section 76 of the electrode structure 130. This increases the contact area between the middle section 76 of the electrode structure 015 and the natural cavity, thereby enhancing the ablation effect of the electrode structure 015.

[0174] For example, refer to Figure 13 The electrode structure 016 may also include a first connecting segment (not shown in the figure), an intermediate segment 77, and a second connecting segment (not shown in the figure). For example, the intermediate segment 77 is cylindrical. For example, the electrode structure 016 includes a plurality of support structures 131, which are spaced apart circumferentially along the intermediate segment 77 of the electrode structure 016.

[0175] For example, refer to Figure 13 In the electrode structure 016, the support structure 131 includes at least two support substructures, and the at least two support substructures in each support structure 131 are arranged at intervals along a direction perpendicular to the circumferential direction of the cylinder.

[0176] For example, refer to Figure 13 In electrode structure 016, at least two support substructures in support structure 131 can be support substructure 1311 and support substructure 1312. Support substructure 1311 and support substructure 1312 are arranged at intervals along the Z direction. For example, the Z direction can be the direction of the first connecting segment (pointing to the second connecting segment in the figure). For example, the extension line of support substructure 1311 and the extension line of support substructure 1312 are on the same straight line, that is, the extension lines of support substructure 1311 and the extension lines of support substructure 1312 coincide in the Z direction, but the embodiments of this disclosure are not limited to this.

[0177] This configuration allows the inner diameter of the middle section 77 to be made more uniform through the support structure 131, and also ensures good flexibility of the portion of the electrode structure 016 located between adjacent support substructures of the support structure 131. This facilitates bending and control during the ablation process and enhances the ease of operation.

[0178] For example, refer to Figure 14 The electrode structure 017 may also include a first connecting segment (not shown in the figure), an intermediate segment 78, and a second connecting segment (not shown in the figure). For example, the intermediate segment 78 is cylindrical. For example, the electrode structure 017 includes a plurality of support structures 132, which are spaced apart circumferentially along the intermediate segment 78 of the electrode structure 017.

[0179] For example, refer to Figure 14In electrode structure 017, at least two support substructures in support structure 132 can be support substructure 1321 and support substructure 1322, which are arranged at intervals along the Z direction. For example, the extension lines of support substructure 1321 and support substructure 1322 intersect each other and are parallel to the Z direction. That is, the distance between the extension line of support substructure 1311 and the central axis of intermediate segment 78 and the distance between the extension line of support substructure 1312 and the central axis of intermediate segment 78 are different, but the embodiments of this disclosure are not limited to this.

[0180] For example, refer to Figure 14 This configuration allows the inner diameter of the middle section 78 to be made more uniform through the support structure 132, resulting in good flexibility of the electrode structure 017 in the position of the support substructure without the support structure 132. This further facilitates the bending and control of the electrode structure 017 during the ablation process, enhancing the convenience of operation.

[0181] refer to Figures 12-14 Correspondingly, in electrode structures 015, 016, and 017, at least one first disconnection portion 401 or multiple second disconnection portions 402 may be provided according to design requirements. For example, the multiple first disconnection portions 401 and multiple second disconnection portions 402 may be one arrangement in the above embodiments or a combination of multiple arrangements. For details, please refer to the relevant descriptions in the above embodiments. The embodiments disclosed herein do not limit this.

[0182] Figure 15 A schematic diagram of the structure of an ablation device provided for at least one embodiment of this disclosure; Figure 16 for Figure 15 A schematic diagram of the electrode structure and pull rod of the ablation device in the process; Figure 17 for Figure 15 A schematic diagram of the tie rod structure of the ablation device.

[0183] refer to Figure 15 At least one embodiment of this disclosure also provides an ablation device 020, which includes the electrode structure of any of the above embodiments, as well as a pull rod 211, a conduit 212, and a control handle 213. For example, the configuration of the detachment structure in the electrode structure can be referred to the relevant descriptions in the above embodiments, and will not be repeated here.

[0184] For example, electrode structure 214 includes a first end 2141 and a second end 2142 opposite to each other in the extending direction of pull rod 211. A portion of pull rod 211 is sleeved in conduit 212, and the portion of pull rod 211 extending outside conduit 212 passes through electrode structure 214. The first end 2141 of electrode structure 214 is connected to the end of pull rod 211 away from conduit 212, and the second end 2142 of electrode structure 214 is connected to the end of conduit 212 near electrode structure 214. Control handle 213 is connected to the end of pull rod 211 away from electrode structure 214 and configured to control the movement of pull rod 211 relative to conduit 212 along its axial direction to control the degree to which electrode structure 214 opens.

[0185] For example, refer to Figure 15 The portion of the lever 211 extending beyond the conduit 212 is located inside the electrode structure 214, and the end of this portion away from the control handle 213 is fixedly connected to the first end 2141 of the electrode structure 214. The second end 2142 of the electrode structure 214 is fixedly connected to the end of the conduit 212 near the electrode structure 214. That is, the second end 2142 of the electrode structure 214 and the lever 211 located inside the conduit 212 can move relative to each other in the extension direction of the lever. For example, the control handle 213 may include a control button 2131. When the control button 2131 is pressed, at least the portion of the lever 212 located inside the electrode structure 214 can extend or retract in its extension direction (i.e., in the Z direction), thereby causing the first end 2141 of the electrode structure 214 to move relative to the second end 2142, and thus causing the electrode structure 214 to extend or retract. For example, the greater the degree to which the first end 2141 of the electrode structure 214 stretches relative to the second end 2142, the greater the degree of stretching of the electrode structure 214. This can be adjusted according to design requirements, and the embodiments disclosed herein do not limit this.

[0186] At least one embodiment of the ablation device 020 provided in this disclosure includes an electrode structure 214 with a cut-off portion 40. In the electrode structure 214, by providing at least one cut-off portion 40 in at least one of the first electrode wire 10 and the second electrode wire 20, the braiding density of the electrode wires in the electrode structure 214 can be reduced, and the flexibility of the electrode structure 214 can be effectively enhanced, making the electrode structure 214 easy to adjust. At the same time, the density of the electrode wires in the electrode structure 214 can be higher, so as to have a good ablation effect.

[0187] For example, refer to Figures 15-17In the ablation device 020, a spiral groove 215 is provided on the outer wall of the part of the pull rod 211 that is connected to the electrode structure 214. The distance K1 between the end 2151 of the spiral groove 215 near the electrode structure 214 and the end of the electrode structure 214 near the spiral groove 215 is 1mm-20mm, and the length K2 of the spiral groove 215 is 20mm-100mm.

[0188] For example, refer to Figures 15-17 By providing a spiral groove 215 on the outer wall of the part of the pull rod 211 near the electrode structure 214, the weight of the part of the pull rod 211 near the electrode structure 214 can be reduced, which helps to improve the flexibility of this part of the pull rod 211, thereby facilitating the flexible bending of the electrode structure 214 in the natural cavity and making it easier to operate.

[0189] For example, Figures 15-17 The embodiments of this disclosure do not limit the spiral engraving method of the spiral groove 215. For example, the distance K1 between the end 2151 of the spiral groove 215 near the electrode structure 214 and the end of the electrode structure 214 near the spiral groove 215 is at least one of 5mm-10mm, 8mm-15mm, 12mm-18mm, and 14mm-16mm, but the embodiments of this disclosure are not limited to this. For example, the length K2 of the spiral groove 215 refers to the length of the spiral groove 215 in the Z direction. For example, the length K2 of the spiral groove 215 can be at least one of 30mm-80mm, 40mm-60mm, 30mm-80mm, and 45mm-90mm, but the embodiments of this disclosure are not limited to this.

[0190] Figure 18 A schematic diagram of the electrode structure and pull rod in an ablation device provided for at least one embodiment of this disclosure; Figure 19 for Figure 18 A schematic diagram of the tie rod structure of the ablation device.

[0191] For example, refer to Figure 15 and Figure 18 Compared to ablation device 020, in ablation device 021, the pull rod 211-A includes a first sub-pull rod 2111 and a second sub-pull rod 2112 that are detachably connected. Along the extension direction of pull rod 211-A, i.e., the Z direction, the first sub-pull rod 2111 is closer to the electrode structure 214 than the second sub-pull rod 2112, and all other structures are the same.

[0192] For example, refer to Figure 15 and Figure 18The first sub-pull rod 2111 can be a part of the pull rod 211-A near the electrode structure 214. For example, the dimension of the first sub-pull rod 2111 in the Z direction can be 5mm-10mm, but the embodiments of this disclosure are not limited to this. For example, the second sub-pull rod 2112 can be the part of the pull rod 211-A excluding the first sub-pull rod 2111, but the embodiments of this disclosure are not limited to this. Since the pull rod 211-A is disposed inside the conduit, when the first sub-pull rod 2111 and the second sub-pull rod 2112 are disassembled, the flexibility of the portion of the conduit located between the first sub-pull rod 2111 and the second sub-pull rod 2112 can be effectively improved, which is beneficial for the electrode structure 214 to bend during ablation, thereby making the ablation device 021 have good flexibility.

[0193] For example, refer to Figure 15 , Figure 18 as well as Figure 19 The first sub-rod 2111 and the second sub-rod 2112 in the ablation device 021 may be threadedly connected, but the embodiments of this disclosure are not limited to this. For example, the end of the second sub-rod 2112 away from the first sub-rod 2111 may be connected to a control handle 213 to control the connection or disconnection of the first sub-rod 2111 and the second sub-rod 2112 at position 2113, but the embodiments of this disclosure are not limited to this. For example, when the ablation device 021 needs to be bent, the first sub-rod 2111 and the second sub-rod 2112 are disconnected from each other to enhance the flexibility of the conduit 212 and facilitate the bending operation. For example, when the bending operation is completed, the first sub-rod 2111 and the second sub-rod 2112 are reconnected, thereby enabling the electrode structure 214 of the ablation device 021 to undergo an overall ablation operation.

[0194] This makes the connection or disassembly between the first sub-lever 2111 and the second sub-lever 2112 more flexible and controllable, thereby enhancing the ablation efficiency of the ablation device 021.

[0195] Figure 20 A schematic diagram of another ablation device provided for at least one embodiment of this disclosure.

[0196] For example, refer to Figure 20 ,and Figure 15 Compared to the ablation device 020, the structure of catheter 212-A is different from that of catheter 212, but all other structures are the same. For example, in the ablation device 022, along the direction from electrode structure 214 to control handle 213, i.e., the Z direction, catheter 212-A includes a first sub-catheter 2121, a second sub-catheter 2122, and a third sub-catheter 2123 connected in sequence. The hardness of the first sub-catheter 2121 is less than that of the second sub-catheter 2122, and the hardness of the second sub-catheter 2122 is less than that of the third sub-catheter 2123.

[0197] This configuration allows the first sub-conduit 2121 to have a lower hardness than other parts of the conduit 212-A during ablation, while the second sub-conduit 2122 has a lower hardness. This makes it easier to bend the electrode structure 214, resulting in more flexible control over the electrode structure 214 and improved ablation efficiency of the ablation device 022.

[0198] For example, refer to Figure 20 In the ablation device 022, the first sub-catheter 2121 has a dimension of 20mm-100mm in the extension direction (i.e., the Z direction) of the pull rod 211. For example, this dimension can be 30mm-50mm. For example, this dimension can be 40mm-60mm. For example, this dimension can be 35mm-55mm. For example, this dimension can be 25mm-75mm, but the embodiments of this disclosure are not limited to these.

[0199] For example, refer to Figure 20 In the ablation device 022, the material of at least one of the first sub-catheter 2121 and the second sub-catheter 2122 may include polyether block polyamide, and the material of the third sub-catheter 2123 may include at least one of polyether block polyamide and polydodecanoic acid, but the embodiments of this disclosure are not limited thereto. This allows the catheter 212-A to have good flexibility.

[0200] Figure 21 This is a schematic diagram of the structure of another ablation device provided for at least one embodiment of the present disclosure.

[0201] For example, refer to Figure 21 In ablation device 023, with Figure 15 Compared to the ablation device 020, the structure of catheter 212-B is different from that of catheter 212, but all other structures are the same. For example, catheter 212-B includes a pre-bent section 2124, which is adjacent to the end 2125 of catheter 212-B that connects to the electrode structure. The pre-bent section 2124 has a dimension of 2mm-60mm in the extension direction (i.e., the Z direction) of catheter 212-B, and the angle between the pre-bent section 2124 and the extension direction of catheter 212-B is 0°-30°.

[0202] For example, refer to Figure 21The ablation device 023 can have at least two different states, such as a first state 2126 and a second state 2127. For example, when the ablation device 023 is placed in a natural cavity for ablation, it can be selected as the first state 2126, where the pre-bent section 2124 of the catheter 212-B and the other parts of the catheter 212-B extend along the Z direction, or extend approximately along the Z direction. For example, when the ablation device 023 reaches the designated turning position, it can present the second state 2127, where there is an angle between the pre-bent section 2124 and the extension direction (i.e., the Z direction) of the catheter 212-B. For example, the size of this angle can be set according to the degree of curvature of the natural cavity, such as 15°, 20°, 25°, etc., which is not limited in the embodiments of this disclosure.

[0203] For example, the pre-bent section 2124 of catheter 212-B is pre-shaped, for example, by using a mold with a shape corresponding to the bending state and heat-setting treatment, so that the pre-bent section 2124 of catheter 212-B can easily undergo the above-mentioned deformation when it needs to be bent. This avoids the problems of adjusting the bending degree of the pre-bent section 2124 of catheter 212-B by applying various external forces to the pre-bent section 2124 of catheter 212-B and the complicated operation, as well as the problems of the pre-bent section 2124 of catheter 212-B failing to reach the predetermined state, failing to stably and accurately form the predetermined state, and thus causing ablation operation failure.

[0204] Therefore, pre-bending the portion of the catheter 212-B near the end of the electrode structure facilitates the flexible bending of the catheter 212-B, allowing the electrode structure to reach the curved and irregular natural cavity.

[0205] The following points need to be explained:

[0206] (1) The accompanying drawings of the embodiments of this disclosure only involve the structures involved in the embodiments of this disclosure, and other structures can be referred to the general design.

[0207] (2) Where there is no conflict, features of the same embodiment and different embodiments of this disclosure may be combined with each other.

[0208] The above description is merely an exemplary embodiment of this disclosure and is not intended to limit the scope of protection of this disclosure, which is determined by the appended claims.

Claims

1. An electrode structure, comprising: Multiple first electrode wires arranged alternately and sequentially; Multiple second electrode wires are arranged alternately and sequentially, with each first electrode wire alternating with multiple second electrode wires, and each second electrode wire alternating with multiple first electrode wires, to form multiple overlapping portions at the overlapping positions of the first and second electrode wires. wherein At least one of the first electrode wire and the second electrode wire includes at least one cut-off portion located between two adjacent overlapping portions along its extension direction, wherein the first electrode wire and the second electrode wire are connected to each other at the positions of the two overlapping portions corresponding to the cut-off portion to form a connection portion; The first electrode wire includes at least one cut-off portion located between two adjacent connection portions in the extension direction of the first electrode wire, which is a first cut-off portion; along the extension direction of the first electrode wire, the portion of the first electrode wire located between two adjacent first cut-off portions is a first electrode wire sub-portion, and the first electrode wire sub-portion overlaps with at least two second electrode wires. Along the extension direction of the first electrode wire, the number of second electrode wires overlapping with two sub-parts of the first electrode wire on both sides of the same first cut portion is equal, and both are the first number; along the arrangement direction of the first electrode wires, the number of second electrode wires overlapping with two sub-parts of the first electrode wire on both sides of the same first cut portion of another first electrode wire that is spaced apart from the first electrode wire is equal, and both are the second number. The other first electrode wire spaced apart from the first electrode wire, and the first electrode wire, both include the first cut-off portion, and the first quantity is equal to the second quantity.

2. The electrode structure of claim 1, wherein, Along the arrangement direction of the first electrode wires, at least one first electrode wire is provided between two adjacent first disconnected portions.

3. The electrode structure according to claim 2, wherein, Along the arrangement direction of the first electrode wires, two adjacent first disconnected portions are located between the same two second electrode wires.

4. The electrode structure according to claim 1, wherein, Along the arrangement direction of the first electrode wires, the two second electrode wires adjacent to one of the two adjacent first cut-off portions are different from the two second electrode wires adjacent to the other of the two adjacent first cut-off portions.

5. The electrode structure according to claim 4, wherein, Along the arrangement direction of the first electrode wires, two adjacent first cut-off portions are located in two adjacent first electrode wires.

6. The electrode structure according to claim 4, wherein, Along the arrangement direction of the first electrode wires, at least one first electrode wire is provided between two adjacent first disconnected portions.

7. The electrode structure of claim 1, wherein, The plurality of first electrode wires includes a plurality of first electrode wire groups, and each first electrode wire group includes at least two adjacent first electrode wires. Along the arrangement direction of the first electrode wires, the at least two adjacent first electrode wires in the first electrode wire group include the first cut-off portion, and the first cut-off portion included in each of the at least two adjacent first electrode wires is arranged adjacently and located between the same two second electrode wires.

8. The electrode structure of claim 2, wherein, The second electrode wire includes at least one of the cut-off portions located between two adjacent connection portions in the extension direction of the second electrode wire, which is a second cut-off portion. Along the arrangement direction of the second electrode wire, at least one second electrode wire is provided between two adjacent second disconnected portions.

9. The electrode structure according to claim 8, wherein, The four overlapping portions formed by the overlapping of two first electrode wires adjacent to the first electrode wire having the first cut portion in the arrangement direction of the first electrode wire and two second electrode wires connected to the connecting portions at both ends of the first cut portion are connected in sequence to form a first quadrilateral. The four overlapping portions formed by the two second electrode wires adjacent to the second electrode wire with the second cut-off portion in the arrangement direction of the second electrode wire and the two first electrode wires connected to the connecting portions at both ends of the second cut-off portion are sequentially connected to form a second quadrilateral.

10. The electrode structure of claim 9, wherein, Both the first quadrilateral and the second quadrilateral include at least one of a square, a rectangle, and a parallelogram.

11. The electrode structure of claim 8, wherein, Along the extension direction of the second electrode wire, the portion of the second electrode wire located between two adjacent second cut-off portions is the second electrode wire sub-part, which overlaps with at least two of the first electrode wires.

12. The electrode structure according to claim 11, wherein, Along the arrangement direction of the second electrode wires, at least one second electrode wire is provided between two adjacent first cut-off portions, and at least two first electrode wires are provided between two adjacent second cut-off portions. Along the extension direction of the second electrode wire, at least one first electrode wire is disposed between two adjacent first cut-off portions, and at least two first electrode wires are disposed between two adjacent second cut-off portions. The second electrode wire of the second cut-off portion, which is adjacent to the first cut-off portion, overlaps with the first electrode wire of the first cut-off portion and is connected at the overlapping position. One end of the first cut-off portion and one end of the second cut-off portion coincide at the overlapping position.

13. The electrode structure according to claim 12, wherein, The first electrode wire containing the first cut-off portion, the second electrode wire containing the second cut-off portion adjacent to the first cut-off portion, two first electrode wires adjacent to the first electrode wire with the first cut-off portion in the arrangement direction of the first electrode wires, and two second electrode wires adjacent to the second electrode wire with the second cut-off portion adjacent to the first cut-off portion in the arrangement direction of the second electrode wires overlap each other to form six overlapping portions at the overlapping positions. The six overlapping portions are connected in sequence and form a heart-shaped pattern.

14. The electrode structure of claim 11, wherein, The first cut-off portion and the second cut-off portion have an overlapping portion. Along the extension direction of the first electrode wire, at least one first electrode wire is provided between two adjacent first cut-off portions, and at least one second electrode wire with a second cut-off portion is provided between the second electrode wires where the connecting portions are located on both sides of each first cut-off portion. Along the extension direction of the second electrode wire, at least one first electrode wire having the first cut-off portion is provided between the first electrode wires where the connecting portions are located on both sides of each second cut-off portion.

15. The electrode structure according to claim 14, wherein, The four overlapping portions formed by the two first electrode wires adjacent to the first electrode wire with the first cut-off portion in the arrangement direction of the first electrode wire and the two second electrode wires adjacent to the second electrode wire with the second cut-off portion in the arrangement direction of the second electrode wire are sequentially connected to form a third quadrilateral.

16. The electrode structure of claim 15, wherein, The minimum area of ​​the quadrilateral formed by the overlapping portions of two adjacent first electrode wires and two adjacent second electrode wires is 1 / 5 to 1 / 2 of the area of ​​the third quadrilateral.

17. The electrode structure of claim 1, further comprising a first connecting segment, an intermediate segment, and a second connecting segment connected in sequence, wherein, The intermediate segment is located between the first connecting segment and the second connecting segment. When the electrode structure is configured to be in operation, the middle section is cylindrical, and along the direction from the first connecting section to the second connecting section, the inner diameter of the first connecting section gradually increases, the inner diameter of the middle section remains unchanged, and the inner diameter of the second connecting section gradually decreases.

18. The electrode structure of claim 1, further comprising a first connecting segment, an intermediate segment, and a second connecting segment connected in sequence, wherein, The intermediate segment is located between the first connecting segment and the second connecting segment. When the electrode structure is configured to be in operation, the middle section is frustum-shaped, and along the direction from the first connecting section to the second connecting section, the inner diameter of the first connecting section gradually increases, the inner diameter of the middle section gradually increases, and the inner diameter of the second connecting section gradually decreases.

19. The electrode structure of claim 17 or 18, wherein, The cross-section of the electrode structure perpendicular to the direction from the first connecting segment to the second connecting segment is circular or elliptical.

20. The electrode structure according to claim 17 further includes a support structure disposed on the inner sidewall of the cylinder. wherein The support structure is elongated, and its extension direction is perpendicular to the circumferential direction of the cylinder.

21. The electrode structure according to claim 20, wherein, The electrode structure includes a plurality of support structures, which are arranged sequentially along the circumference of the cylinder.

22. The electrode structure of claim 21, wherein, The support structure includes at least two support substructures. Furthermore, at least two of the support substructures in each of the support structures are arranged at intervals along a direction perpendicular to the circumference of the cylinder.

23. The electrode structure according to claim 22, wherein, The extensions of at least two of the supporting substructures in each of the supporting structures lie on the same straight line; and / or The extensions of at least two of the supporting substructures in each of the supporting structures are intersecting and parallel.

24. An ablation device, comprising an electrode structure, a pull rod, a conduit, and a control handle as described in any one of claims 1 to 23, wherein, The electrode structure includes a first end and a second end opposite to each other in the extension direction of the pull rod; A portion of the pull rod is sleeved in the conduit, and the portion of the pull rod extending outside the conduit passes through the electrode structure. The first end of the electrode structure is connected to the end of the pull rod away from the conduit, and the second end of the electrode structure is connected to the end of the conduit near the electrode structure. The control handle is connected to the end of the pull rod away from the electrode structure and is configured to control the movement of the pull rod relative to the conduit along its axial direction to control the degree to which the electrode structure opens.

25. The ablation device according to claim 24, wherein A spiral groove is provided on the outer wall of the part of the pull rod that connects to the electrode structure. The distance between the end of the spiral groove near the electrode structure and the end of the electrode structure near the spiral groove is 1mm-20mm, and the length of the spiral groove is 20mm-100mm.

26. The ablation device of claim 24, wherein the pull rod includes a first sub-pull rod and a second sub-pull rod detachably connected, the first sub-pull rod being closer to the electrode structure relative to the second sub-pull rod along the extension direction of the pull rod.

27. The ablation device of claim 25 or 26, wherein, The first sub-pull rod is threadedly connected to the second sub-pull rod.

28. The ablation device of claim 24, wherein, Along the direction of the electrode structure pointing towards the control handle, The catheter includes a first sub-catheter, a second sub-catheter, and a third sub-catheter connected in sequence. The hardness of the first sub-catheter is less than that of the second sub-catheter, and the hardness of the second sub-catheter is less than that of the third sub-catheter.

29. The ablation device according to claim 28, wherein, The first sub-conduit has a dimension of 20mm-100mm in the extension direction of the pull rod. The material of at least one of the first sub-catheter and the second sub-catheter includes polyether block polyamide, and the material of the third sub-catheter includes at least one of polyether block polyamide and polydodecanoic acid.

30. The ablation device of claim 24, wherein, The catheter includes a pre-bent section, which is adjacent to the end of the catheter connected to the electrode structure. The pre-bent section has a dimension of 2mm-60mm in the extension direction of the catheter, and the angle between the pre-bent section and the extension direction of the catheter is 0°-30°.

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