A controllable bending shaping device for electrode wire

Abstract

The present application discloses a controllable bending shaping device for electrode wires, including an outer tube, a control wire and an operating part; the outer tube includes a front section, a control bending section and a main section arranged in sequence from the distal end to the proximal end; a plurality of wide grooves are arranged on the tube wall of the control bending section, and the notches of the plurality of wide grooves are located on the same side of the control bending section; the control wire includes a core wire inserted into the outer tube and a core wire seat connected to the proximal end of the core wire, and the distal end of the core wire is fixedly connected to the front section; the core wire drives the control bending section of the outer tube to produce bending deformation after being subjected to tension; the operating part is connected to the proximal end of the main section, and the core wire passes through the inner cavity of the operating part; the operating part is provided with a locking head for locking the core wire. The bending degree of the control bending section in a specific direction can be adjusted by controlling the stretching length of the core wire seat, and the bending degree can be adjusted according to different patients and treatment processes, so that the operation process has higher fault tolerance and is more convenient for doctors to operate, and has the advantages of strong adaptability, wide application coverage and low operation cost.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to a controllable bending shaping device for an electrode wire. Background Art

[0002] At present, the electrode leads of medical devices such as pacemakers are mainly divided into active electrode leads and passive electrode leads. The electrode end of the passive electrode lead has a barb-like structure that can be directly hung on the myocardial trabeculae. Over time, the electrode end will be wrapped by the myocardium and gradually stabilize. The electrode end of the active electrode lead is a spiral structure, which is telescopically screwed into the myocardium and fixed in the atrium or ventricle.

[0003] When the existing active electrode wire enters the atrium or ventricle, the head end of the electrode wire needs to be shaped into a straight shape or a certain bending angle to facilitate the electrode wire to reach and be fixed at the target position.

[0004] There are two common ways to shape the electrode lead tip. One is to insert the pre-shaped steel wire into the electrode lead to shape the electrode lead into a straight shape or a certain bending angle. Generally, one electrode lead will be equipped with 2 straight steel wires and 2 pre-bent steel wires. The other is to insert the electrode lead into the pre-shaped sheath at the head end to shape the electrode lead into a straight shape or a certain bending angle. Generally, the sheath is sold separately, and there are 3-5 different specifications of sheaths.

[0005] The main clinical defects are: there are few specifications of pre-shaped wires or sheaths, and the heart structures of different patients are also different. Several different styles cannot meet the requirements of all patients. Doctors often need to try many times and bend the wires or sheaths by themselves to send the head of the electrode wire to the target position. The use of pre-shaped sheaths is costly and increases the burden on patients. In addition, only special small-diameter electrode wires can be inserted into the sheaths, which is not suitable for conventional electrode wires.

[0006] Application Contents

[0007] Therefore, the technical problem to be solved by the present application is to overcome the defects of the prior art that the pre-shaped steel wire or sheath is fixed in size and cannot adapt to the differences in the heart structure of different patients, thereby providing a controllable bending shaping device for electrode wires.

[0008] To solve the above technical problems, the technical solution of this application is as follows:

[0009] A controllable bending shaping device for an electrode wire, comprising:

[0010] The outer tube comprises a front section, a bending control section and a main section which are arranged in sequence from the distal end to the proximal end; a plurality of wide grooves are arranged on the tube wall of the bending control section, and the notches of the plurality of wide grooves are located on the same side of the bending control section;

[0011] The control wire comprises a core wire inserted into the outer tube and a core wire seat connected to the proximal end of the core wire, and the distal end of the core wire is fixedly connected to the front section; the core wire drives the bending control section of the outer tube to bend and deform after being subjected to tension;

[0012] The operating part is connected to the proximal end of the main body section, and the core wire passes through the inner cavity of the operating part; the operating part is provided with a locking head for locking the core wire.

[0013] Furthermore, in the longitudinal cross section of the bending control section, the wide groove is in an arc shape.

[0014] Furthermore, from one end close to the front section to one end close to the main section, the spacing between two adjacent wide grooves gradually increases, and / or the groove height of the wide groove in the axial direction of the bending control section gradually decreases, and / or the groove depth of the wide groove in the radial direction of the bending control section gradually decreases.

[0015] Furthermore, a plurality of front section straight grooves are provided on the tube wall of the front section.

[0016] Furthermore, a plurality of front section straight groove groups are provided on the tube wall of the front section, and each of the front section straight groove groups includes a plurality of front section straight grooves; the plurality of front section straight groove groups are arranged in sequence along the axial direction of the front section, and the non-grooved portion between two adjacent groups of the front section straight groove groups is spiral-shaped; the plurality of front section straight grooves of the same front section straight groove group are sequentially offset upward in the circumferential direction of the front section.

[0017] Furthermore, projections of two adjacent front-segment straight grooves in the same front-segment straight groove group in the axial direction of the front segment at least partially overlap.

[0018] Furthermore, the outer tube also includes an intermediate section located between the bending control section and the main body section, and a plurality of intermediate section straight grooves are provided on the tube wall of the intermediate section.

[0019] Furthermore, a plurality of middle section straight groove groups are provided on the tube wall of the middle section, and each of the middle section straight groove groups includes a plurality of middle section straight grooves; the plurality of middle section straight groove groups are arranged in sequence along the axial direction of the middle section, and the non-grooved portion between two adjacent groups of the middle section straight groove groups is spiral-shaped; the plurality of middle section straight grooves of the same middle section straight groove group are sequentially offset upward in the circumferential direction of the middle section.

[0020] Furthermore, projections of two adjacent middle section straight grooves in the same middle section straight groove group in the axial direction of the middle section at least partially overlap.

[0021] Furthermore, from one end close to the bending control section to one end close to the main section, the groove spacing of the middle section straight groove group in the axial direction of the bending control section gradually increases.

[0022] Furthermore, a small head end ball is provided at the distal end of the core wire, and the small head end ball is interference fit with the front section.

[0023] Furthermore, the distal end of the core wire is connected to the front section by welding or bonding.

[0024] Furthermore, the operating part also includes a protective sleeve, an outer tube fixing part and a spring chuck; the outer tube fixing part is connected to the proximal end of the protective sleeve, the outer tube passes through the protective sleeve and is fixedly connected to the inner hole of the outer tube fixing part; the proximal end of the outer tube fixing part is provided with an inner conical hole, the tail end of the spring chuck is connected to the inner cavity of the locking head, the head end of the spring chuck is arranged close to the inner conical hole, the core wire passes through the inner cavity of the spring chuck and is connected to the core wire seat; the locking head is threadedly connected to the outer tube fixing part; when the locking head approaches the outer tube fixing part, it pushes the inner conical hole to clamp the head end of the spring chuck, so that the head end of the spring chuck clamps the core wire.

[0025] The technical solution of this application has the following advantages:

[0026] 1. The controllable bending shaping device for electrode wires provided in the present application is provided with a plurality of wide grooves on the control bending section of the outer tube, and the notches of the plurality of wide grooves are located on the same side of the control bending section (11), and the distal end of the core wire is fixedly connected to the front section of the outer tube; when adjusting the bending degree of the outer tube, the core wire seat at the proximal end of the core wire is pulled, and the core wire and the outer tube are relatively displaced, and the control bending section of the outer tube is bent and deformed in a specific direction to achieve the purpose of controlling the bending. After the bending degree of the control bending section is adjusted to the right position, the core wire can be locked by the locking head on the operating part, so that the shape of the control bending section can be maintained. This controllable bending shaping device can adjust the bending degree of the control bending section in a specific direction by controlling the stretching length of the core wire seat, and can adjust the bending degree according to different patients and treatment processes, so that the surgical process is more fault-tolerant and easier for doctors to operate. It has the advantages of strong adaptability, wide application coverage, and low surgical cost.

[0027] 2. The controllable bending shaping device for the electrode lead provided in the present application can make the electrode lead sheathed on the outer tube reach the His bundle more easily through real-time bending control operation, thereby achieving His bundle pacing.

[0028] 3. The controllable bending shaping device for electrode wire provided in the present application has the following characteristics: the spacing between two adjacent wide grooves gradually increases from the end close to the front section to the end close to the main section, the groove height of the wide groove in the axial direction of the control bending section gradually decreases, and the groove depth of the wide groove in the radial direction of the control bending section gradually decreases; such an arrangement can make the part of the tube section of the control bending section closer to the front section easier to bend, so that the control bending section and the front section can be better bent to form the desired shape.

[0029] 4. The controllable bending shaping device for the electrode wire provided in the present application has a plurality of front section straight grooves arranged on the tube wall of the front section, which can improve the softness of the front section.

[0030] 5. The controllable bending shaping device for electrode wire provided in the present application comprises a plurality of front section straight groove groups arranged in sequence along the axial direction of the front section, and the non-grooved portion between two adjacent front section straight groove groups is spirally shaped; a plurality of front section straight grooves of the same front section straight groove group are sequentially offset upward in the circumferential direction of the front section; such an arrangement can ensure that the front section has better bending performance while ensuring the structural strength of the front section.

[0031] 6. The controllable bending shaping device for the electrode wire provided in the present application has a plurality of middle section straight grooves arranged on the tube wall of the middle section, which can improve the softness of the middle section and make the bending performance of the entire outer tube better.

[0032] 7. The controllable bending shaping device for the electrode wire provided in the present application has a groove spacing of the middle section straight groove group in the axial direction of the bending control section gradually increasing from one end close to the bending control section to the end close to the main section, so that the bending of various parts of the middle section can be gradually changed, thereby improving the overall bending performance of the outer tube and better adapting to heart structures of different shapes. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0034] Figure 1 This is a schematic diagram of the structure of the controllable bending shaping device in an embodiment of the present application;

[0035] Figure 2 This is a schematic diagram of the structure of the control wire of the controllable bending shaping device in an embodiment of the present application;

[0036] Figure 3 This is a schematic diagram of an implementation of an outer tube of a controllable bending shaping device in an embodiment of the present application;

[0037] Figure 4 This is a planar development schematic diagram of an implementation mode of the outer tube of the controllable bending shaping device in the embodiment of the present application;

[0038] Figure 5 Schematic diagram of the controllable bending operation of the controllable bending shaping device in the embodiment of the present application;

[0039] Figure 6This is an exploded schematic diagram of the operating portion of the controllable bending shaping device in an embodiment of the present application;

[0040] Figure 7 It is a cross-sectional schematic diagram of the operating portion of the controllable bending shaping device in the embodiment of the present application;

[0041] Figure 8 It is a schematic diagram of His bundle pacing using the bent electrode in an embodiment of the present application.

[0042] Explanation of reference numerals: 1. controllable bending shaping device; 15. outer tube; 10. front section; 11. bending control section; 12. middle section; 13. main section; 100. straight groove in the front section; 110. wide groove; 120. straight groove in the middle section; 20. control wire; 21. core wire seat; 22. core wire; 23. small ball at the head end; 30. operating part; 150. protective cover; 160. outer tube fixing part; 170. spring clamp; 180. locking head; 200. active electrode wire; 210. electrode end; 220. connector end; 310. right atrium; 320. right ventricle; 330. His bundle. DETAILED DESCRIPTION

[0043] The technical solution of the present application will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.

[0044] In the description of the present application, it should be noted that the terms "distal end" and "proximal end" when used to refer to an instrument or component in the following description are relative to the position or direction of the treating clinician. Therefore, the "distal end" refers to a position away from the treating clinician or in the direction away from the treating clinician, while the term "proximal end" refers to a position close to the clinician or in the direction toward the clinician. The orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0045] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0046] In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0047] like Figure 1 -2 shows a controllable bending shaping device for an electrode wire, comprising an outer tube 15, an operating part 30 and a control wire 20. The outer tube 15 comprises a front section 10, a control bending section 11, a middle section 12 and a main section 13 arranged in sequence from the distal end to the proximal end. The control wire 20 comprises a head end ball 23, a core wire 22 and a core wire seat 21, wherein the head end ball 23 is formed at the distal end of the core wire 22, and the core wire seat 21 is connected to the proximal end of the core wire 22. The operating part 30 is connected to the proximal end of the main section 13, and a locking head 180 is provided on the operating part 30, and the core wire 22 passes through the inner cavity of the operating part 30, and the locking head 180 is used to lock the core wire 22.

[0048] The diameter of the head end ball 23 is larger than the diameter of the core wire 22. The diameter of the core wire 22 is preferably 0.05-0.4 mm, and the diameter of the head end ball 23 is preferably 0.1-0.5 mm. The material of the core wire 22 is preferably stainless steel, nickel titanium alloy, MP35N.

[0049] Combination Figure 1 and Figure 2 , insert the core wire 22 from the main section 13 into the outer tube 15, and then laser spot weld the head end of the core wire 22 to form a head end ball 23, or directly weld or bond the head end of the core wire 22 to the front section 10, so that the distal end of the core wire 22 is clamped to the front section 10. Pull the core wire seat 21 to make the core wire 22 and the outer tube 15 relatively displaced, drive the outer tube 15 to generate a compressive force, so that the bending control section 11 of the outer tube 15 is bent and deformed.

[0050] Combination Figure 3The tube wall of the bending control section 11 is formed with a plurality of wide grooves 110 by laser cutting, and the notches of the plurality of wide grooves 110 are located on the same side of the bending control section. When adjusting the bending degree of the outer tube 15, the core wire seat 21 is pulled, and the bending control section 11 of the outer tube 15 is bent and deformed in a specific direction to achieve the purpose of bending control. After the bending degree of the bending control section 11 is adjusted in place, the locking head 180 on the operating part 30 can lock the core wire 22 to maintain the shape of the bending control section 11. The bending degree of the bending control section 11 in a specific direction can be adjusted by controlling the stretching length of the core wire seat 21. The bending degree can be adjusted according to different patients and treatment processes, so that the surgical process is more fault-tolerant and more convenient for doctors to operate. It has the advantages of strong adaptability, wide application coverage, and low surgical cost.

[0051] Combination Figure 3 The wide groove 110 is in an arc shape. The wide groove 110 in an arc shape can make the bending control section 11 have better bending performance, and the solid structure parts of the bending control section 11 are not easy to squeeze each other or form wrinkles when bending. It can be understood here that the cross-sectional shape of the wide groove 110 can also be any shape such as a square, as long as the openings of multiple wide grooves 110 are arranged in the same direction of the bending control section 11. The size of the wide groove 110 can be adaptively selected according to the needs of the bending degree. Generally, the groove depth of the wide groove 110 is preferably greater than the radius of the outer tube 15 and less than the diameter of the outer tube 15.

[0052] Combination Figure 4 , the spacing between two adjacent wide grooves 110 of the bending control section 11 gradually increases from one end close to the front section 10 to one end close to the middle section 12, and / or the slot height of the wide groove 110 in the length extension direction of the bending control section 11 gradually decreases, and / or the slot depth of the wide groove 110 in the radial direction of the bending control section 11 gradually decreases. With such an arrangement, the part of the pipe section of the bending control section 11 closer to the front section 10 is easier to bend, so that the bending control section 11 and the front section 10 can be better bent to form the desired shape to match the heart structure of different shapes; the difficulty of bending control at different parts of the bending control section 11 is controlled by changing the slot height, slot depth and spacing of the wide grooves 110. In other alternative embodiments, the sizes of the multiple wide grooves 110 on the bending control section 11 are the same, and the spacing between two adjacent wide grooves 110 is also the same.

[0053] Combination Figure 3 and Figure 4, a front section straight groove 100 is formed on the front section 10 by laser cutting, and a middle section straight groove 120 is formed on the middle section 12 by laser cutting. By controlling the width, spacing, number of grooves in one cycle in the circumferential direction and the size of the outer tube 15 of the front section straight groove 100 and the middle section straight groove 120, different softness of the outer tube 15 can be achieved. In some alternative embodiments, the portion of the main section 13 close to the middle section 12 can also be provided with straight grooves, and in other alternative embodiments, the outer tube 15 can also omit the middle section 12.

[0054] The material of the outer tube 15 is preferably stainless steel, nickel-titanium alloy, or MP35N. The outer diameter of the outer tube 15 is preferably 0.1-0.5 mm, and the wall thickness of the outer tube 15 is preferably 0.03-0.1 mm.

[0055] Combination Figure 3 and Figure 4 , a plurality of front-segment straight groove groups are arranged on the tube wall of the front section 10, each of which includes a plurality of front-segment straight grooves 100; the plurality of front-segment straight groove groups are arranged in sequence along the axial direction of the front section, and the non-grooved portion between two adjacent front-segment straight groove groups is spiral-shaped; the plurality of front-segment straight grooves 100 of the same front-segment straight groove group are sequentially offset upward in the circumferential direction of the front section 10, and the projections of two adjacent front-segment straight grooves 100 in the same front-segment straight groove group in the axial direction of the front section 10 overlap. A plurality of middle-segment straight groove groups are arranged on the tube wall of the middle section 12, each of which includes a plurality of middle-segment straight grooves 120; the plurality of middle-segment straight groove groups are arranged in sequence along the axial direction of the middle section, and the non-grooved portion between two adjacent middle-segment straight groove groups is spiral-shaped; the plurality of middle-segment straight grooves 120 of the same middle-segment straight groove group are sequentially offset upward in the circumferential direction of the middle section 12. The projections of two adjacent middle-segment straight grooves 120 in the same middle-segment straight groove group in the axial direction of the middle section 12 overlap. Such arrangement can ensure that the front section 10 and the middle section 12 have a better bending degree while ensuring the structural strength of the front section 10 and the middle section 12. Specifically, the front section straight grooves 100 and the middle section straight grooves 120 can be perpendicular to the axial direction of the outer tube 15 or at a certain angle. The width, spacing, and number of straight grooves in each group of the front section straight grooves 100 and the middle section straight grooves 120 in the circumferential direction will affect the softness of the front section 10 and the middle section 12.

[0056] Combination Figure 5, the core wire 22 is tightly matched with the front section 10 of the outer tube 15 through the small ball 23 at the head end. Because the operating part 30 is fixed to the outer tube 15, when the operator holds the operating part 30 with one hand and pulls the core wire seat 21 with the other hand, the core wire 22 and the outer tube 15 produce relative displacement, starting from the front section 10, the outer tube 15 produces a compressive force, driving the multiple wide grooves 110 to compress in the same direction, so that the control bending section 11 produces bending deformation. The greater the relative displacement of the core wire 22, the greater the bending deformation of the control bending section 11. After completing the control bending operation, rotate the locking head 180 to lock the core wire 22, so that the controllable bending shaping device maintains the control bending state.

[0057] Combination Figure 6 and Figure 7 The operating part 30 also includes a protective sleeve 150, an outer tube fixing piece 160 and a spring chuck 170; the outer tube fixing piece 160 is connected to the proximal end of the protective sleeve 150, the outer tube 15 passes through the protective sleeve 150 and is fixed to the inner hole of the outer tube fixing piece 160 by bonding or welding; the proximal end of the outer tube fixing piece 160 is provided with an inner conical hole, the tail end of the spring chuck 170 is connected to the inner cavity of the locking head 180, the head end of the spring chuck 170 is arranged close to the inner conical hole, the core wire 22 passes through the inner cavity of the spring chuck 180 and is connected to the core wire seat 21; the locking head 180 is threadedly connected to the outer tube fixing piece 160; when the locking head 180 approaches the outer tube fixing piece 170, the inner conical hole is pushed to clamp the head end of the spring chuck 170, so that the head end of the spring chuck 170 clamps the core wire 22, and the bending control shaping of the outer tube 15 is completed.

[0058] The protective cover 150 can reduce the stress at the connection between the outer tube 15 and the outer tube fixing member 160, and prevent the outer tube 15 from breaking. The material of the protective cover 150 is preferably silicone or a plastic with a certain elasticity, such as TPU, nylon, and PVC.

[0059] Figure 8 The present invention demonstrates an application scenario of shaping the pacing electrode lead using a controllable bending shaping device to achieve His bundle pacing. The outer tube 15 of the controllable bending shaping device is inserted into the electrode lead via the connector end 220 of the active electrode lead 200. The active electrode lead 200 enters the heart through the superior vena cava, passes through the right atrium 310, and enters the right ventricle 320. After reaching the right ventricle 320, the operator performs a controlled bending operation on the controllable bending shaping device, so that the head end of the active electrode lead 200 is bent, and the electrode end 210 abuts against the His bundle 330 at the junction of the atrium and ventricle. Subsequently, the electrode is kept in the controlled bending state, and the spiral electrode of the electrode end 210 is unscrewed to connect the active electrode lead 200 to the His bundle 330, thereby achieving His bundle pacing.

[0060] In summary, the controllable bending shaping device provided in the embodiment of the present application can realize the function of bending and softening the outer tube 15 by setting a plurality of wide grooves 110 in the bending control section 11 of the outer tube 15 and setting a plurality of straight grooves in the front section 10 and the middle section 12 of the outer tube 15; the outer tube 15 is pulled to deform by the core wire 22, and the wide grooves 110 on the outer tube 15 produce compression deformation to realize the controlled bending; the head end of the core wire 22 is laser balled or welded to complete the tight assembly of the core wire 22 and the head end of the outer tube 15; the relative displacement of the core wire 22 and the outer tube 15 is used to realize the regulation of the degree of controlled bending; the locking head 180 of the operating part 30 is used to fix the relative displacement of the core wire 22 and the outer tube 15 to realize the maintenance of controlled bending. It has the advantages of being able to complete bending control of different specifications, strong adaptability, wide application coverage and low surgical cost; the degree of bending control can be adjusted according to different patients and treatment progress, the surgical process has higher fault tolerance and is easier for doctors to operate; through real-time bending control operation, the electrode wire can more easily reach the His bundle and achieve His bundle pacing.

[0061] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection created by this application.

Claims

1. A controllable bending shaping device for an electrode conductor, characterized in that: include: The outer tube (15) comprises a front section (10), a bending control section (11) and a main section (13) which are arranged in sequence from the distal end to the proximal end; a plurality of wide grooves (110) are arranged on the tube wall of the bending control section (11), and the notches of the plurality of wide grooves (110) are located on the same side of the bending control section (11); The control wire (20) comprises a core wire (22) inserted into the outer tube (15) and a core wire seat (21) connected to the proximal end of the core wire (22); the distal end of the core wire (22) is fixedly connected to the front section (10); when the core wire (22) is subjected to tension, it drives the bending control section (11) of the outer tube (15) to bend and deform; An operating portion (30) is connected to the proximal end of the main body section (13), and the core wire (22) passes through the inner cavity of the operating portion (30); a locking head (180) is provided on the operating portion (30) for locking the core wire (22); In the longitudinal cross section of the bending control section (11), the wide groove (110) is in an arc shape; From one end close to the front section (10) to one end close to the main section (13), the spacing between two adjacent wide grooves (110) gradually increases, the groove height of the wide grooves (110) in the axial direction of the bending control section (11) gradually decreases, and the groove depth of the wide grooves (110) in the radial direction of the bending control section (11) gradually decreases; The tube wall of the front section (10) is provided with a plurality of front section straight grooves (100); the outer tube (15) further comprises a middle section (12) located between the bending control section (11) and the main section (13); the tube wall of the middle section (12) is provided with a plurality of middle section straight grooves (120); the groove heights of the front section straight grooves (100) and the middle section straight grooves (120) in the axial direction of the outer tube (15) are both smaller than the groove height of the wide grooves (110) in the axial direction of the outer tube (15).

2. The controllable bending shaping device for an electrode conductor according to claim 1, characterized in that: A plurality of front section straight groove groups are provided on the tube wall of the front section (10), each of the front section straight groove groups comprising a plurality of front section straight grooves (100); the plurality of front section straight groove groups are arranged in sequence along the axial direction of the front section (10), and the non-grooved portion between two adjacent front section straight groove groups is spiral-shaped; the plurality of front section straight grooves (100) of the same front section straight groove group are offset upward in sequence in the circumferential direction of the front section (10).

3. The controllable bending shaping device for an electrode conductor according to claim 2, characterized in that: The projections of two adjacent front section straight grooves (100) in the same front section straight groove group in the axial direction of the front section (10) at least partially overlap.

4. The controllable bending shaping device for an electrode conductor according to claim 3, characterized in that: A plurality of middle section straight groove groups are provided on the tube wall of the middle section (12), each of the middle section straight groove groups comprising a plurality of middle section straight grooves (120); the plurality of middle section straight groove groups are arranged in sequence along the axial direction of the middle section (12), and the non-grooved portion between two adjacent middle section straight groove groups is spiral-shaped; the plurality of middle section straight grooves (120) of the same middle section straight groove group are offset upward in sequence in the circumferential direction of the middle section (12).

5. The controllable bending shaping device for an electrode conductor according to claim 4, characterized in that: The projections of two adjacent middle section straight grooves (120) in the same middle section straight groove group in the axial direction of the middle section (12) at least partially overlap.

6. The controllable bending shaping device for an electrode conductor according to claim 4, characterized in that: From one end close to the bending control section (11) to one end close to the main section (13), the groove spacing of the intermediate section straight groove group in the axial direction of the bending control section (11) gradually increases.

7. The controllable bending shaping device for an electrode conductor according to claim 1, characterized in that: A small head end ball (23) is provided at the distal end of the core wire (22), and the small head end ball (23) is interference fit with the front section (10).

8. The controllable bending shaping device for an electrode conductor according to claim 1, characterized in that: The distal end of the core wire (22) is connected to the front section (10) by welding or bonding.

9. The controllable bending shaping device for an electrode conductor according to claim 1, characterized in that: The operating portion (30) further comprises a protective sleeve (150), an outer tube fixing member (160) and a spring chuck (170); the outer tube fixing member (160) is connected to the proximal end of the protective sleeve (150); the outer tube (15) passes through the protective sleeve (150) and is fixedly connected to the inner hole of the outer tube fixing member (160); an inner conical hole is provided at the proximal end of the outer tube fixing member (160); the rear end of the spring chuck (170) is connected to the inner cavity of the locking head (180); The head end of the spring chuck (170) is arranged close to the inner conical hole, and the core wire (22) passes through the inner cavity of the spring chuck (170) and is connected to the core wire seat (21); the locking head (180) is threadedly connected to the outer tube fixing member (160); when the locking head (180) approaches the outer tube fixing member (160), it pushes the inner conical hole to clamp the head end of the spring chuck (170), so that the head end of the spring chuck (170) clamps the core wire (22).

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