Electrode support for catheter and method for making the same

Abstract

The present application relates to an electrode holder for a catheter and a method for manufacturing the same. The electrode holder for the catheter comprises: a main body, the main body comprises a base and a tail, a plurality of support members are formed between the base and the tail, and the plurality of support members extend spirally from the base toward the tail; after the base and the tail move relative to each other, the plurality of support members bend along the radial direction of the main body to construct a plurality of support structures distributed at intervals along the circumference of the main body. According to the solution provided by the present application, the electrode holder can be manufactured by structural deformation without the need for the heat treatment process in the related art, which makes the manufacture of the electrode holder simpler and faster, and improves the manufacturing efficiency of the electrode holder.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to an electrode bracket of a catheter and a manufacturing method thereof. Background Art

[0002] In the electrophysiological system, the electrode is a key device used to contact or approach the human tissue being treated and release energy or transmit signals. The electrode holder is a support for the electrode, which is used to support the electrode so that the electrode can contact or approach the human tissue being treated.

[0003] In the related art, the electrode bracket is made of nickel-titanium alloy, which needs to be heat-treated and shaped during the processing, and the process is complicated. In addition, the heat treatment operation requires professional heat treatment knowledge and has high requirements on personnel, equipment, environment and other factors. Summary of the invention

[0004] In order to solve or partially solve the problems existing in the related art, the present application provides an electrode bracket of a catheter and a manufacturing method thereof, which can reduce the processing steps and improve the manufacturing efficiency.

[0005] In a first aspect, the present application provides an electrode holder for a catheter, comprising a main body, the main body comprising a base and a tail, a plurality of support members formed between the base and the tail, the plurality of support members extending in a spiral shape from the base toward the tail;

[0006] After the base and the tail move relative to each other, the plurality of support members bend along the radial direction of the main body to construct a plurality of support structures distributed at intervals along the circumference of the main body.

[0007] In one embodiment, the support member is provided with a curved segment and a straight segment connected to the curved segment;

[0008] The curved section is disposed close to the base, and the straight section is disposed close to the tail.

[0009] In one embodiment, the curved section is formed with at least two curved portions connected in sequence.

[0010] The at least two bent portions are bent in different directions to form a spiral structure.

[0011] In one embodiment, the straight line segment extends in a direction parallel to the axial direction of the main body.

[0012] In one embodiment, after the base and the tail move relative to each other, the support structure constructed by the plurality of support members is combined into a petal-shaped structure.

[0013] In one embodiment, the support member is further provided with a transition section, and the base and the support member are connected via the transition section, wherein the width of the transition section gradually decreases from the base to the support member.

[0014] In one embodiment, the support member includes a first end and a second end;

[0015] The first end is connected to the base through the transition section, and the second ends of the plurality of support members are used to define the tail.

[0016] In one embodiment, the base comprises a first connecting structure,

[0017] The tail portion includes a second connection structure formed on the support member, and the electrode bracket is mounted on the external component through the first connection structure and the second connection structure.

[0018] A second aspect of the present application provides a method for manufacturing an electrode bracket, comprising: cutting a tubular body so that the body is formed into a plurality of support members extending spirally from a base portion toward a tail portion of the body;

[0019] The base and the tail are relatively moved to bend the plurality of support members along the radial direction of the main body, thereby constructing a plurality of support structures distributed at intervals along the circumference of the main body.

[0020] In one embodiment, the main body is cut so that the main body forms a plurality of support structures extending spirally from the base of the main body toward the tail of the main body, including:

[0021] The main body is cut so that the plurality of support members formed after cutting include a curved section close to the base of the main body and a straight section connected to the curved section and close to the tail.

[0022] The technical solution provided by this application may have the following beneficial effects:

[0023] By forming a plurality of support members between the base and the tail of the main body, the plurality of support members extend spirally from the base toward the tail. After the base and the tail move relative to each other, the plurality of support members bend along the radial direction of the main body to construct a plurality of support structures distributed at circumferential intervals along the main body. In this way, the electrode bracket provided in the present application can be manufactured by structural deformation without the need for heat treatment processing steps in related technologies, thereby making the manufacture of the electrode bracket simpler and faster and improving the manufacturing efficiency of the electrode bracket.

[0024] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The above and other objects, features and advantages of the present application will become more apparent by describing in more detail exemplary embodiments of the present application in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments of the present application.

[0026] Figure 1 is a schematic structural diagram of an electrode support of a catheter shown in an embodiment of the present application;

[0027] Figure 2 is a schematic structural diagram of an electrode support of a catheter shown in another embodiment of the present application;

[0028] Figure 3 yes Figure 1 A structural diagram from another perspective;

[0029] Figure 4 yes Figure 1 Schematic diagram of the planar unfolded structure;

[0030] Figure 5 yes Figure 4 Schematic diagram of the local structure;

[0031] Figure 6 yes Figure 1 A schematic diagram of the structure of the electrode support of the catheter in the supporting state;

[0032] Figure 7 yes Figure 6 A structural diagram from another perspective;

[0033] Figure 8 yes Figure 6 A structural schematic diagram from another perspective;

[0034] Fig. 9 yes Figure 2 A schematic diagram of the structure of the electrode support of the catheter in the supporting state;

[0035] Fig.10 yes Fig. 9 A structural diagram from another perspective;

[0036] Fig.11 It is a schematic flow chart of a method for manufacturing an electrode support of a catheter shown in an embodiment of the present application;

[0037] Fig.12 It is a schematic flow chart of a method for manufacturing an electrode holder of a catheter shown in another embodiment of the present application.

[0038] Reference numerals:

[0039] 100, base; 200, tail; 300, support member; 400, support structure; 500, electrode sheet; 600, catheter; 110, first connecting structure; 310, curved section; 320, straight section; 330, transition section; 311, curved portion; 321, second connecting structure; 610, outer tube; 620, inner tube. DETAILED DESCRIPTION

[0040] The embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although the embodiments of the present application are shown in the accompanying drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to make the present application more thorough and complete, and to fully convey the scope of the present application to those skilled in the art.

[0041] The terms used in this application are for the purpose of describing specific embodiments only and are not intended to limit this application. The singular forms of "a", "said" and "the" used in this application and the appended claims are also intended to include plural forms unless the context clearly indicates other meanings. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0042] It should be understood that although the terms "first", "second", "third", etc. may be used in this application to describe various information, this information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of this application, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0043] In the related art, the electrode bracket is made of nickel-titanium alloy, which needs to be heat-treated and shaped during the processing, and the process is complicated. In addition, the heat treatment operation requires professional heat treatment knowledge and has high requirements on personnel, equipment, environment and other factors.

[0044] In view of the above problems, the embodiments of the present application provide an electrode bracket for a catheter and a manufacturing method thereof, which can reduce the processing steps and improve the manufacturing efficiency.

[0045] The technical solution of the embodiments of the present application is described in detail below with reference to the accompanying drawings.

[0046] Please also see Figures 1 to 10The electrode holder of the catheter provided in the present application includes a main body, which includes a base 100 and a tail 200. A plurality of support members 300 are formed between the base 100 and the tail 200, and the plurality of support members 300 extend spirally from the base 100 toward the tail 200. When the base 100 and the tail 200 move relative to each other, the plurality of support members 300 bend along the radial direction of the main body to construct a plurality of support structures 400 distributed at intervals along the circumference of the main body.

[0047] It can be seen from this embodiment that a plurality of support members 300 are formed between the base 100 and the tail 200 of the main body, and the plurality of support members 300 extend spirally from the base 100 toward the tail 200. After the base 100 and the tail 200 move relative to each other, the plurality of support members 300 bend along the radial direction of the main body to construct a plurality of support structures 400 distributed at circumferential intervals along the main body. In this way, the electrode holder provided in the present application can be manufactured by structural deformation without the need for heat treatment processing steps in related technologies, thereby making the manufacture of the electrode holder simpler and faster, and improving the manufacturing efficiency of the electrode holder.

[0048] It is worth mentioning that by spirally extending the multiple support members 300 from the base 100 of the main body toward the tail 200, the support members 300 can bend along the radial direction of the main body. Therefore, when the base 100 and the tail 200 of the main body are squeezed by opposite torques, the multiple support members 300 can bend and deform along the radial direction of the main body, that is, in the direction away from the axial center of the main body. After deformation, the base 100 and the tail 200 are limited to form an electrode bracket. Therefore, the electrode bracket provided in the present application can be manufactured by structural deformation.

[0049] In this embodiment, the main body can be nickel-titanium alloy, stainless steel or polymer material, and is made into a plurality of spirally extending support members 300 by cutting, 3D printing, etc. The support members 300 are used to install the electrode sheet 500. The plurality of support members 300 are distributed at intervals along the circumference of the main body. By moving the base 100 and the tail 200 relatively close to each other, the support members 300 are bent along the radial direction of the main body to construct a plurality of support structures 400 distributed at intervals along the circumference of the main body. The support structures 400 are used to support the electrode sheet 500 so that the electrode sheet 500 on the support member 300 can contact or approach the human tissue to be treated, thereby releasing radio frequency energy to treat the human tissue to be treated.

[0050] In some embodiments, the number of the support members 300 is 2 to 6. In order to arrange the electrode sheet 500 more comprehensively, preferably, the number of the support members 300 is 6. In some embodiments, the width of the support member 300 is 0.5 mm to 1.5 mm. In order to ensure the support strength of the support member 300 after bending and to consider the structural size restrictions of the comprehensive catheter, preferably, the width of the support member 300 is 1 mm. In this embodiment, the diameter of the catheter is 2-5 mm.

[0051] Please also see Figure 3 , Figure 4 , Figure 6 , Figure 7 as well as Figure 8 In some embodiments, the support member 300 is provided with a curved section 310 and a straight section 320 connected to the curved section 310; the curved section 310 is arranged close to the base 100, and the straight section 320 is arranged close to the tail 200. In this embodiment, after the support member 300 is bent along the radial direction of the main body, the curved section 310 can make the support structure 400 have a larger support area, so that while ensuring that the electrode sheet 500 is effectively supported in the circumferential direction of the main body, the number of support members 300 can be reduced, further making the production of the electrode bracket simple and quick. The straight section 320 is used to be fixedly connected to an external component such as a catheter 600. The straight section 320 can provide force support for the curved section 310 to bend along the radial direction of the main body. When the base 100 and the tail 200 of the main body move relatively close to each other, the straight section 320 can improve the configuration stability of the support structure 400 during the process of the support member 300 bending along the radial direction of the main body to form the support structure 400. In order to enable the plurality of support members 300 to form a support structure 400 of the same configuration when bent, preferably, the structures of the support members 300 are the same.

[0052] Please also see Figure 2 , Fig. 9 and Fig.10In some embodiments, the support member 300 is provided with a plurality of curved segments 310 and a straight segment 320 disposed between two adjacent curved segments 310, and the two ends of the straight segment 320 are respectively connected to the two adjacent curved segments 310. After such arrangement, compared with the support member 300 in the previous embodiment, the support member 300 in this embodiment can form another support structure 400 with a different structural shape after being bent along the radial direction of the main body, so that the electrode sheet 500 can be arranged in more directions of the circumference of the main body, so that the electrode sheet 500 can be more comprehensively contacted or close to the human tissue to be treated, thereby improving the convenience of operation of the catheter. At the same time, the straight segment 320 disposed between the two curved segments 310 can form a roughly straight support platform after the support member 300 is bent along the radial direction of the main body, which is conducive to the electrode sheet 500 installed on the support platform to better fit the tissue to be treated, thereby improving the treatment effect. In this embodiment, the support member 300 may be provided with two curved sections 310, and a straight section 320 is provided between the two curved sections 310, and the two ends of the straight section 320 are respectively connected to the two curved sections 310. In this embodiment, the curved section 310 is formed with at least two curved portions 311 connected in sequence, and at least two curved portions 311 are bent in different directions to form a spiral structure. The spiral angle range of the spiral structure is between 0° and 180°. The at least two curved portions 311 may include two, three, four or more curved portions 311. Different numbers of curved portions 311 can form spiral structures with different numbers of spirals. The spiral structures with different numbers of spirals can form different forms of support structures 400 after bending along the radial direction of the main body. Specifically, it can be selected according to the arrangement requirements of the electrode sheet 500 on the support structure 400.

[0053] In some embodiments, the body may be a tubular structure, and the at least two curved portions include a first curved portion and a second curved portion, the first curved portion is bent counterclockwise along the tube wall of the body, and the second curved portion is bent clockwise along the tube wall of the body. In order to enable each support member 300 to form a rotationally symmetrical support structure 400 when bending along the radial direction of the body, so as to evenly stretch the tissue, the first curved portion and the second curved portion are alternately arranged, and the bending length and bending amplitude of the first curved portion on the support member 300 are respectively the same as those of the second curved portion.

[0054] In some embodiments, the straight segment 320 extends in parallel to the axial direction of the main body. With this arrangement, when the base 100 and the tail 200 of the main body move relative to each other, the straight segment 320 fixedly connected to the external member can improve the stability of the support member 300 along the radial bending of the main body, and prevent the support member 300 from deflecting when bending along the radial direction of the main body.

[0055] In some embodiments, after the base 100 and the tail 200 move relative to each other, the support structure 400 constructed by the multiple support members 300 is combined into a petal-shaped structure. In this embodiment, each spirally extending support member 300 can form a petal-shaped structure after bending, and the multiple spirally extending support members 300 can form multiple petal-shaped structures arranged around the base 100 after bending. When viewed from the side of the base 100 of the electrode holder, as shown in FIG. Figure 5 In this embodiment, the plurality of support members 300 are evenly distributed along the circumference of the main body, so that after the base 100 and the tail 200 move relative to each other, the plurality of support members 300 can construct a support structure 400 evenly distributed along the circumference of the main body.

[0056] In some embodiments, in order to ensure the connection strength between the base 100 and the support member 300 and improve the stability of the overall structure of the electrode holder, the support member 300 is further provided with a transition section 330, through which the base 100 and the support member 300 are connected, wherein the width of the transition section 330 gradually decreases from the base 100 to the support member 300. After such a configuration, the width of the end of the transition section 330 connected to the base 100 is larger than that of the end connected to the support member 300, and the transition section 330 and the base 100 can have a larger connection area, so that the support member 300 can have better connection stability with the base 100 through the transition section 330; the transition section 330 and the support member 300 can have a smaller connection area, while ensuring the connection strength between the transition section 330 and the support member 300, the initial bending moment of the support member 300 bending along the radial direction of the main body when the base 100 and the tail 200 of the main body move relative to each other is reduced, which is conducive to the convenient deployment of the electrode holder.

[0057] In some embodiments, the support member 300 includes a first end and a second end; the first end is connected to the base 100 through a transition section 330, and the second ends of the plurality of support members 300 are used to define the tail 200. The curved section 310 and the straight section 320 are disposed between the first end and the second end of the support member 300. When the base 100 and the tail 200 of the main body move relative to each other, the base 100 drives the first end and the second end to move relative to each other, and the support member 300 bends along the radial direction of the main body to construct a support structure 400.

[0058] In this embodiment, the first end and the second end are offset in the axial direction of the main body, so that after the support member 300 is bent in the radial direction of the main body, the first end and the second end can have a spacing in the circumferential direction of the main body, so that the support area of ​​the support structure 400 in the circumferential direction of the main body can be increased, thereby reducing the number of support members 300. In addition, after the support member 300 is bent in the radial direction of the main body, the first end can be closer to the second end, that is, the first end and the second end can have a smaller spacing, and the support member 300 can be bent in the radial direction of the main body to a greater extent, thereby enabling the support member 300 to form a greater degree of support in the radial direction of the main body, thereby increasing the upper limit of the support after the electrode holder is deployed, and further expanding the adjustable support range of the electrode holder.

[0059] In some embodiments, the base 100 includes a first connection structure 110, the tail 200 includes a second connection structure 321 formed on the support member 300, and the electrode holder is installed on the external member through the first connection structure 110 and the second connection structure 321. The first connection structure 110 can be an annular structure, which is used to connect multiple support members 300 along the circumference of the main body, so that after the first connection structure 110 moves relative to the external member connected to the second connection structure 321, the multiple support members 300 can be bent along the radial direction of the main body, and a plurality of support structures 400 distributed at intervals along the circumference of the main body are constructed. The second connection structure 321 has a variety of connection and fixing methods with the external member, including but not limited to adhesive bonding. The second connection structure 321 may include a concave and convex portion provided on the tail 200, and the concave and convex portion can increase the adhesive bonding area between the external member such as the catheter 600 and improve the firmness of the connection. The concavoconvex part in this embodiment can be a groove provided on the tail 200, and the groove has a variety of shapes, preferably a semicircular groove, and the groove is filled with glue or other connecting materials to enhance the connection area between the filling material such as glue and the groove wall of the groove, and the external components such as the catheter 600, thereby improving the connection firmness between the tail 200 and the external components such as the catheter 600. In order to further improve the connection firmness between the tail 200 and the external components such as the catheter 600, preferably, the concavoconvex part is provided on opposite sides of the tail 200. In this embodiment, the external component can be a component such as the catheter 600 for pushing the electrode bracket.

[0060] In some embodiments, the catheter 600 includes an outer tube 610 and an inner tube 620 movably arranged inside the outer tube 610, the first connecting structure 110 is connected to the tube wall of the inner tube 620, and the second connecting structure 321 is connected to the tube wall of the outer tube 610. When the catheter 600 pushes the electrode holder into the human body, the electrode holder is in a retracted state, that is, the electrode holder maintains a tubular shape. When the electrode holder is pushed to the tissue that needs treatment, the inner tube 620 is pulled outward so that the first connecting structure 110 moves toward the second connecting structure 321, so that the multiple support members 300 are bent along the radial direction of the main body to form a support structure 400 to support the electrode sheet 500. When the support structure 400 is supported in place, the base 100 and the tail 200 are limited by fixing the inner tube 620 and the outer tube 610 relatively, thereby maintaining a stable support shape of the support structure 400.

[0061] The above embodiments introduce the electrode bracket provided in the embodiments of the present application. Accordingly, the present application also provides an embodiment of a method for manufacturing an electrode bracket.

[0062] See also Fig.11 The manufacturing method of the electrode bracket provided in this embodiment includes:

[0063] S101, cutting the tubular body so that the body forms a plurality of support members extending spirally from the base of the body toward the tail.

[0064] In this step, the main body can be made of nickel-titanium alloy or stainless steel, and multiple support members extending spirally from the base of the main body to the tail are cut out of the main body by laser cutting or other cutting methods. It is worth noting that gaps are cut between the multiple support members to avoid mutual interference when the multiple support members are bent later, which affects the deployment of the electrode bracket.

[0065] In addition, the main body may also be made of polymer material, and a main body with a plurality of spirally extending support members may be printed out by 3D printing or other methods.

[0066] S102, the base and the tail are relatively moved to bend the plurality of support members along the radial direction of the main body, so as to construct a plurality of support structures distributed at intervals along the circumference of the main body.

[0067] In this step, under the action of the relative movement of the base and the tail, the multiple spiral support members can bend along the radial direction of the main body, and construct multiple support structures distributed at intervals along the circumference of the main body.

[0068] It can be seen from this embodiment that the manufacturing method of the electrode bracket provided in the present application optimizes the processing technology of the electrode bracket, reduces the processing difficulty, saves the manufacturing cost, shortens the manufacturing time of the electrode bracket, and improves the production efficiency by cutting a spiral support member on the tubular body and forming a supporting structure with the spiral support member through structural deformation.

[0069] In some embodiments, S101, the main body is cut to form a plurality of support structures extending spirally from the base of the main body toward the tail of the main body, including:

[0070] The main body is cut so that the multiple support members formed after cutting include a curved section close to the base of the main body and a straight section connected to the curved section and close to the tail.

[0071] In this step, the curved segment is used to form a spiral structure of the support member, and the straight segment is used to provide force support for the curved segment when it bends along the radial direction of the main body.

[0072] It can be seen from this embodiment that the curved segment can make the support structure have a larger support area, thus ensuring that the tissue is effectively stretched in the circumferential direction of the main body while reducing the number of support members. The straight segment connected to the curved segment is used to be fixedly connected to an external component such as a catheter, and the straight segment can provide force support for the curved segment to improve the configuration stability of the support structure.

[0073] In some embodiments, S101, cutting the main body so that the main body forms a plurality of support structures extending spirally from the base of the main body toward the tail of the main body, further comprising:

[0074] A transition section connected to the base is cut on the support member, wherein the width of the transition section gradually decreases from the base to the support member.

[0075] In this step, the transition section and the base can have a larger connection area, so that the support member can have better connection stability with the base through the transition section; the transition section and the support member can have a smaller connection area, while ensuring the connection strength between the transition section and the support member, reducing the initial bending moment of the support member along the radial direction of the main body when the base and the tail of the main body move relative to each other, which is conducive to the convenient deployment of the electrode bracket.

[0076] A connection structure for connecting to an external member is cut out on the support member.

[0077] In this step, the connecting structure can be a groove structure provided on the support member, and the connecting structure and the external component have a variety of connection and fixing methods, including but not limited to gluing, by filling the groove with glue or other connecting materials to enhance the connection area between the glue or other filling materials and the groove wall and the external component, thereby improving the connection firmness between the tail and the external component.

[0078] In addition, the present application also provides another embodiment of a method for manufacturing an electrode bracket of a catheter.

[0079] See also Fig.12 The manufacturing method of the electrode bracket provided in this embodiment includes:

[0080] S201, cutting the plate-like main body so that the main body is formed into a plurality of support members extending in a curved shape from the base of the main body toward the tail.

[0081] In this step, the main body can be made of nickel-titanium alloy or stainless steel. A plurality of support members extending in a curved shape from the base of the main body toward the tail are cut out on the main body by laser cutting or other cutting methods.

[0082] In addition, the main body may also be made of polymer material, and a main body with a plurality of support members extending in a curved shape may be printed out by 3D printing or other methods.

[0083] S202, winding the main body so that the main body forms a tubular structure, and the plurality of support members respectively form a spiral structure.

[0084] In this step, the plate-like main body is wound to form a main body of a tubular structure, and the curved extending support member forms a support member of a spiral structure. The gaps connected after the main body is wound can be sealed by filling with structural adhesive or the like.

[0085] S203, the base and the tail are relatively moved so that the multiple spiral structures are bent along the radial direction of the tubular structure to construct multiple support structures distributed at intervals along the circumference of the tubular structure.

[0086] In this step, under the action of the relative movement of the base and the tail, the multiple spiral structural members can bend along the radial direction of the tubular structure, and construct multiple support structures distributed at intervals along the circumference of the tubular structure.

[0087] It can be seen from this embodiment that the manufacturing method of the electrode bracket provided in the present application is to first cut a curved support member on a plate-like body, and then wind the plate-like body to form a tubular body, so that the curved support member forms a spiral support member, and the spiral support member forms a supporting structure through structural deformation. Compared with the related technology, no heat treatment process is required, which reduces the processing difficulty, saves the manufacturing cost, shortens the manufacturing time of the electrode bracket, and improves the production efficiency.

[0088] The embodiments of the present application have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or improvements to the technology in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. An electrode holder for a catheter, characterized in that: include: A main body, the main body comprising a base and a tail, a plurality of support members are formed between the base and the tail, and the plurality of support members extend spirally from the base toward the tail; After the base and the tail move relative to each other, the plurality of support members bend along the radial direction of the main body to construct a plurality of support structures spaced apart along the circumference of the main body; The support member is provided with a curved section and a straight section connected to the curved section; the support member includes a first end and a second end; the first end and the second end are offset in the axial direction of the main body; the first end is connected to the base through a transition section, and the second ends of the plurality of support members are used to define the tail, and the curved section and the straight section are provided between the first end and the second end of the support member; The curved section is arranged close to the base, and the straight section is arranged close to the tail; Each of the curved sections is formed with at least two curved portions connected in sequence, and the at least two curved portions are bent in different directions to form a spiral structure; wherein the at least two curved portions include a first curved portion and a second curved portion, the first curved portion is bent counterclockwise along the tube wall of the main body, and the second curved portion is bent clockwise along the tube wall of the main body, the first curved portion and the second curved portion are alternately arranged, and the bending length and bending amplitude of the first curved portion on the support member are respectively the same as those of the second curved portion; The straight line segment extends in an axial direction parallel to the main body; after the base and the tail move relative to each other, the support structure constructed by the plurality of support members is combined into a petal-shaped structure.

2. The electrode holder according to claim 1, characterized in that: The support member is further provided with a transition section, and the base is connected to the support member via the transition section, wherein the width of the transition section gradually decreases from the base to the support member.

3. The electrode holder according to claim 1, characterized in that: The base includes a first connection structure, The tail portion includes a second connection structure formed on the support member, and the electrode bracket is mounted on the external component through the first connection structure and the second connection structure.

4. A method for manufacturing an electrode support of a catheter according to any one of claims 1 to 3, characterized in that: include: Cutting the tubular body so that the body forms a plurality of support members extending spirally from the base of the body toward the tail; The base and the tail are relatively moved to bend the plurality of support members along the radial direction of the main body, thereby constructing a plurality of support structures distributed at intervals along the circumference of the main body.

5. The method according to claim 4, characterized in that: The tubular body is cut to form a plurality of support members extending spirally from the base of the body toward the tail of the body, including: The main body is cut so that the plurality of support members formed after cutting include a curved section close to the base of the main body and a straight section connected to the curved section and close to the tail.

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