Electrode assembly of shock wave catheter and shock wave catheter

Abstract

The utility model discloses a shock wave catheter electrode assembly and a shock wave catheter, the shock wave catheter comprises an inner tube and a balloon, a cavity used for containing conducting liquid is formed in the balloon, and the inner tube is inserted into the cavity; the electrode assembly is arranged in the cavity and is connected with the inner pipe; the electrode assembly comprises a plurality of first conductive parts and a plurality of second conductive parts, and the first conductive parts and the second conductive parts are annularly and alternately arranged on the inner pipe; and the first conductive part and the second conductive part are used for puncturing the conductive liquid to generate bubbles in a power-on state so as to form shock waves. The first conductive part and the second conductive part are annularly arranged by 360 degrees, the length and the thickness of the electrode assembly are reduced on the basis that bubbles are generated to form shock waves, and therefore the overall rigidity of the shock wave catheter is reduced, the trafficability is improved, and the shock wave catheter can smoothly pass through a narrow cavity in the using process.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to an electrode assembly of a shock wave catheter and a shock wave catheter. Background Art

[0002] Vascular calcification is a common pathological manifestation of atherosclerosis, hypertension, diabetic vascular disease, vascular injury, chronic kidney disease and aging. Shock wave lithotripsy is an innovative technology for dealing with calcified lesions. It is safer, more effective and simpler than other technologies. It mainly provides pulsed mechanical energy to the lesion site during low-pressure balloon expansion to destroy superficial and deep calcification, loosen calcified plaques without affecting the integrity of the vascular endothelium. Existing shock wave lithotripsy equipment mainly generates bubbles by breaking through the medium liquid, and uses the collapse of the bubbles to generate shock waves.

[0003] However, the existing positive and negative conductive blocks for breaking through the dielectric liquid are stacked on the shock wave guide tube, or arranged front and back along the axial direction of the guide tube, which easily leads to an increase in the radial thickness of the guide tube structure or an increase in the axial stiffness, resulting in a decrease in the flexibility of the shock wave guide tube, a decrease in the passability, an increase in the difficulty of passing through a narrow cavity, and a problem of inconvenience in use.

[0004] Therefore, the prior art still needs to be improved and developed. Utility Model Content

[0005] In view of the above-mentioned deficiencies in the prior art, the purpose of the utility model is to provide an electrode assembly for a shock wave guide tube and a shock wave guide tube, aiming to solve the problem that after the positive and negative conductive blocks for generating bubbles are arranged on the existing shock wave guide tube, the size increases, the passability of the overall structure of the shock wave guide tube is affected, and it causes inconvenience in use.

[0006] The technical solution of the utility model is as follows:

[0007] An electrode assembly of a shock wave catheter, the shock wave catheter comprising an inner tube and a balloon, wherein a chamber for accommodating a conductive liquid is formed in the balloon, and the inner tube is inserted into the chamber; the electrode assembly is arranged in the chamber and connected to the inner tube; wherein the electrode assembly comprises a plurality of first conductive members and a plurality of second conductive members, wherein the plurality of first conductive members and the plurality of second conductive members are alternately arranged in a ring shape on the inner tube; the first conductive members and the second conductive members are used to break through the conductive liquid to generate bubbles in a power-on state, so as to form a shock wave.

[0008] In the electrode assembly of the shock wave guide tube, an insulating block is provided between adjacent first conductive members and second conductive members.

[0009] The electrode assembly of the shock waveguide tube, wherein the insulating block includes a connecting portion and two partition portions, the connecting portion is connected to the inner tube and is arranged along the circumferential direction of the inner tube; the two partition portions are both protrudingly arranged on the side of the connecting portion away from the inner tube; a first groove for arranging the first conductive member is formed between the two partition portions; or a second groove for arranging the second conductive member is formed between the two partition portions.

[0010] The electrode assembly of the shock wave catheter, wherein two first conductive members are provided, and the two first conductive members are arranged opposite to each other along the radial direction of the inner tube; the electrode assembly comprises an input wire and an output wire, the input wire is electrically connected to one of the first conductive members, and the output wire is electrically connected to another first conductive member; the input wire and the output wire both extend along the axial direction of the inner tube and are used for external power supply.

[0011] The electrode assembly of the shock wave guide tube, wherein a first connection area is provided on the side of the first conductive member facing the inner tube, and the first connection area is used for welding or bonding with the inner tube; and / or a second connection area is provided on the side of the second conductive member facing the inner tube, and the second connection area is used for welding or bonding with the inner tube.

[0012] The electrode assembly of the shock waveguide tube, wherein the first conductive member is in the shape of an arc, and the curvature of the inner surface of the first conductive member is equal to the curvature of the inner tube; and / or the second conductive member is in the shape of an arc, and the curvature of the inner surface of the second conductive member is equal to the curvature of the inner tube.

[0013] The electrode assembly of the shock wave guide tube, wherein the electrode assembly comprises an insulating ring, and the insulating ring is sleeved on the outside of the first conductive member and the second conductive member.

[0014] The present application also discloses a shock wave guide tube, which comprises an electrode assembly of any shock wave guide tube as described above.

[0015] In the shock wave guide tube, the electrode assemblies are provided in a plurality of groups, and the plurality of groups of electrode assemblies are arranged at intervals along the axial direction of the inner tube.

[0016] In the shock wave guide tube, a connecting wire is provided between two adjacent groups of electrode assemblies.

[0017] Compared with the prior art, the embodiment of the utility model has the following advantages:

[0018] The electrode assembly disclosed in the utility model is to place both the first conductive member and the second conductive member into the chamber, and break through the conductive liquid in the chamber in the power-on state, thereby generating bubbles; the shock waves transmitted in all directions generated by the spontaneous expansion and collapse of the bubbles in the chamber are used to break the calcified plaques in the cavity. By setting a plurality of first conductive members and a plurality of second conductive members, the contact area between the electrode assembly and the conductive liquid is increased, and the efficiency of bubble generation can be improved. Moreover, the first conductive member and the second conductive member are alternately arranged in a ring shape, so that the first conductive member and the second conductive member are evenly arranged on the outer wall surface of the inner tube, which has good stability. The relative surface area of ​​the first conductive member and the second conductive member is large, which is also convenient for triggering the breakdown condition. It can be seen that the first conductive member and the second conductive member are arranged along the circumferential direction of the inner tube, and the length and thickness of the overall structure of the electrode assembly are small, so the flexibility of the overall structure of the shock wave guide tube is less affected, which is conducive to maintaining the passability of the shock wave guide tube, so that it can pass through the narrow cavity smoothly during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a schematic structural diagram of the existing shock wave guide tube disclosed in the utility model;

[0021] Figure 2 It is an assembly diagram of the electrode assembly of the shock wave guide tube in the utility model;

[0022] Figure 3 This is an assembly diagram of the first conductive member and the insulating stopper in one embodiment of the utility model;

[0023] Figure 4 A radial cross-sectional view of an electrode assembly of a shock wave guide tube in another embodiment of the present invention;

[0024] Figure 5 A radial cross-sectional view of an electrode assembly of a shock wave guide tube in another embodiment of the present invention;

[0025] Figure 6 It is an assembly diagram of an electrode assembly of a shock wave guide tube in another embodiment of the utility model;

[0026] Figure 7 It is a schematic structural diagram of a shock wave guide tube in another embodiment of the utility model;

[0027] Figure 8It is a schematic structural diagram of a shock wave guide tube in another embodiment of the utility model.

[0028] Among them, 1. positive conductive sheet; 2. negative conductive sheet; 3. catheter; 4. insulating layer; 10. inner tube; 20. balloon; 30. chamber; 40. connecting wire; 100. electrode assembly; 110. first conductive part; 120. second conductive part; 130. insulating block; 131. connecting part; 132. partition part; 140. input wire; 150. output wire; 160. insulating ring. DETAILED DESCRIPTION

[0029] In order to enable those skilled in the art to better understand the solution of the utility model, the following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] like Figure 1 As shown, in the prior art, a positive conductive sheet 1 and a negative conductive sheet 2 are arranged on the shock wave guide tube, which are stacked along the radial direction of the guide tube 3, and an insulating layer 4 is arranged between the positive conductive sheet 1 and the negative conductive sheet 2, which results in a large diameter of the shock wave guide tube and is not easy to pass through a narrow cavity.

[0031] See also Figure 1 In one embodiment of the utility model application, an electrode assembly 100 of a shock wave catheter is disclosed, the shock wave catheter includes an inner tube 10 and a balloon 20, a chamber 30 for accommodating a conductive liquid is formed in the balloon 20, the inner tube 10 is inserted into the chamber 30; the electrode assembly 100 is arranged in the chamber 30 and connected to the inner tube 10; wherein the electrode assembly 100 includes a plurality of first conductive members 110 and a plurality of second conductive members 120, the plurality of first conductive members 110 and the plurality of second conductive members 120 are alternately arranged in a ring shape on the inner tube 10; the first conductive members 110 and the second conductive members 120 are used to break through the conductive liquid to generate bubbles in a power-on state to form a shock wave.

[0032] The electrode assembly 100 disclosed in this embodiment is used in a shock wave guide tube, and the rear end of the shock wave guide tube is connected to a cable and a shock wave generator, and a pulse signal is transmitted to the first conductive member 110 and the second conductive member 120, so that the conductive liquid is punctured to generate bubbles. In this embodiment, the inner tube 10 and the balloon 20 are nested, and the balloon 20 and the inner tube 10 form a chamber 30, and the conductive liquid is injected into the chamber 30. The conductive liquid includes but is not limited to solutions such as physiological saline and contrast agent. For example, a 50% physiological saline and 50% contrast agent electrolyte mixture can be injected into the balloon 20. When punctured, bubbles can be generated, and the bubbles expand rapidly and then collapse, so that a sound pressure shock wave equivalent to 50atm can be generated in the cavity. That is, in this embodiment, the conductive liquid in the cavity 30 is punctured by placing both the first conductive member 110 and the second conductive member 120 in the cavity 30 in the energized state, thereby generating bubbles; the shock waves transmitted in all directions generated by the spontaneous expansion and collapse of the bubbles in the cavity 30 are used to break the calcified plaques in the cavity.

[0033] Specifically, by providing a plurality of first conductive members 110 and a plurality of second conductive members 120, the contact area between the electrode assembly 100 and the conductive liquid is increased, the efficiency of bubble generation can be improved, which is conducive to increasing the impact frequency of the shock wave and improving the crushing effect. Moreover, the first conductive members 110 and the second conductive members 120 are alternately arranged in a ring shape, so that the first conductive members 110 and the second conductive members 120 are evenly arranged on the outer wall surface of the inner tube 10, which has good stability. The relative surface area of ​​the first conductive members 110 and the second conductive members 120 is large, which is also convenient for triggering the breakdown condition.

[0034] Specifically, in this embodiment, the first conductive member 110 and the second conductive member 120 are arranged along the circumferential direction of the inner tube 10, and the length and thickness of the overall structure of the electrode assembly 100 are small, so the flexibility of the overall structure of the shock wave guide tube is less affected, which is conducive to maintaining the passability of the shock wave guide tube so that it can pass through a narrow cavity smoothly during use.

[0035] like Figure 2 As shown, as an implementation of this embodiment, an insulating block 130 is disclosed between the adjacent first conductive member 110 and the second conductive member 120. In this embodiment, the first conductive member 110 and the second conductive member 120 are alternately arranged along the circumferential direction of the inner tube 10. The insulating block 130 can prevent the adjacent first conductive member 110 and the second conductive member 120 from contacting each other, thereby preventing a short circuit fault from occurring in the circuit; the first conductive member 110 and the second conductive member 120 are separated, leaving space so that the conductive liquid connects the surface of the first conductive member 110 and the surface of the second conductive member 120, thereby triggering a breakdown phenomenon, achieving the effect of generating bubbles and forming a shock wave.

[0036] Specifically, the insulating block 130 disclosed in this embodiment includes but is not limited to a plastic block or a silicone block. The insulating block is used to separate the first conductive member 110 and the second conductive member 120, and can also play a supporting role. For example, the first conductive member 110, the insulating block 130, and the second conductive member 120 are abutted in sequence, and form a ring-shaped electrode assembly 100, which is sleeved on the outer wall surface of the inner tube 10. The relatively stable geometric characteristics of the circle when under pressure can be used to improve the stability of the electrode assembly 100 during use, and reduce the displacement or sliding of the first conductive member 110 or the second conductive member 120. Plastic blocks or silicone blocks have the characteristics of soft surfaces, so the extrusion pressure can be reduced. When the first conductive member 110 and the insulating block 130, or the second conductive member 120 and the insulating block 130 abut against each other, they can remain stable and reduce damage.

[0037] like Figure 2 , Figure 3 and Figure 4 As shown, as another implementation of this embodiment, it is disclosed that the insulating block 130 includes a connecting portion 131 and two partition portions 132, the connecting portion 131 is connected to the inner tube 10 and is arranged along the circumferential direction of the inner tube 10; the two partition portions 132 are both protrudingly arranged on the side of the connecting portion 131 away from the inner tube 10; a first groove for setting the first conductive member 110 is formed between the two partition portions 132; or, a second groove for setting the second conductive member 120 is formed between the two partition portions 132.

[0038] The insulating block 130 disclosed in this embodiment is connected to the inner tube 10 through the connecting portion 131, which can be specifically welded, bonded or clamped, etc., and fixed through the connecting portion 131 so that the partition portion 132 can also remain stable, so that the first conductive member 110 or the second conductive member 120 set between the two partition portions 132 can remain stable because the side and bottom surfaces are surrounded by the insulating block 130, leaving only the top surface to contact the conductive liquid. In this embodiment, in order to ensure that the electrode assembly 100 will not shift during use, the surface of the first conductive member 110 in contact with the partition portion 132 and the connecting portion 131 can be provided with a glue layer to facilitate fitting and fixing; or welding points can be set to fix by welding.

[0039] like Figure 3 As shown, when the first conductive member 110 is disposed between two partitions 132, two second conductive members 120 may be disposed outside the two partitions 132, and the second conductive members 120 are closely connected to the outer wall of the inner tube 10, and the side surfaces are closely connected to the partitions 132; otherwise, Figure 4 As shown, when the second conductive member 120 is disposed between two partition portions 132 , two first conductive members 110 may be disposed on the outer sides of the two partition portions 132 , respectively.

[0040] like Figure 2 and Figure 4 As shown, as another implementation of this embodiment, it is disclosed that two first conductive members 110 are provided, and the two first conductive members 110 are arranged opposite to each other along the radial direction of the inner tube 10; the electrode assembly 100 includes an input wire 140 and an output wire 150, the input wire 140 is electrically connected to one first conductive member 110, and the output wire 150 is electrically connected to another first conductive member 110; the input wire 140 and the output wire 150 both extend along the axial direction of the inner tube 10 for an external power source.

[0041] In this embodiment, the input wire 140 inputs voltage to the first conductive member 110, so that voltage is generated on the second conductive member 120 and the other first conductive member 110, and the conductive liquid can be broken down after reaching the breakdown condition, thereby generating bubbles. The input wire 140 and the output wire 150 are used to access electrical signals. Since the electrode assembly 100 itself is arranged around the outer wall surface of the inner tube 10, in order to arrange the wires in an orderly manner and reduce the influence of the wires on the conduction of the shock wave, the input wire 140 and the output wire 150 are arranged to extend along the axial direction of the inner tube 10.

[0042] Specifically, as another implementation of the present embodiment, a first connection area is provided on the first conductive member 110 on the side facing the inner tube 10, and the first connection area is used for welding or bonding with the inner tube 10; and / or, a second connection area is provided on the second conductive member 120 on the side facing the inner tube 10, and the second connection area is used for welding or bonding with the inner tube 10.

[0043] In this embodiment, the first conductive member 110 and the second conductive member 120 are both arranged in the chamber 30. The shock wave generated by the collapse of the bubbles in the chamber 30 will also have an impact on the first conductive member 110 and the second conductive member 120. Therefore, by setting the first connecting area, the second connecting area, etc. for bonding or welding, the stability of the connection between the first conductive member 110, the second conductive member 120 and the inner tube 10 can be improved to prevent the electrode assembly 100 from disintegrating during use.

[0044] For example Figure 2 and Figure 4 As shown, as another implementation of this embodiment, it is disclosed that the shape of the first conductive member 110 is an arc, and the curvature of the inner surface of the first conductive member 110 is equal to the curvature of the inner tube 10; and / or, the shape of the second conductive member 120 is an arc, and the curvature of the inner surface of the second conductive member 120 is equal to the curvature of the inner tube 10.

[0045] In this embodiment, the inner tube 10 of the shock wave guide tube is generally designed as a circular tube, so the outer wall surface is a curved surface, and the first conductive member 110 and the second conductive member 120 are arranged in the shape of an arc, which can adapt to the shape of the inner tube 10, so as to better fit the outer wall surface of the inner tube 10, and improve the stability of the electrode assembly 100 when assembled to the shock wave guide tube.

[0046] like Figure 5 As shown, in another implementation of the present embodiment, there is no insulating block 130 between the first conductive member 110 and the second conductive member 120, leaving a gap for filling with conductive liquid, thereby reducing material costs and also helping to reduce the outer diameter of the electrode assembly 100, further improving the passability of the shock wave guide tube.

[0047] like Figure 6 As shown, as another implementation of this embodiment, the electrode assembly 100 is disclosed to include an insulating collar 160, which is sleeved on the outside of the first conductive member 110 and the second conductive member 120. The first conductive member 110 and the second conductive member 120 disclosed in this embodiment, the side away from the inner tube 10 are exposed in the chamber 30, and the insulating collar 160 can be provided for further protection to prevent the inner wall of the balloon 20 from colliding with or squeezing the first conductive member 110 or the second conductive member 120. Specifically, the insulating collar 160 can be made of the same material as the insulating block 130, such as a silicone insulating collar 160, a plastic insulating collar 160, etc., which can reduce the manufacturing cost of the parts.

[0048] Specifically, in another implementation of the present embodiment, it is disclosed that a plurality of second conductive members 120 can be arranged between adjacent first conductive members 110; for example, two or three, etc., to increase the excitation points, which is conducive to generating more bubbles, increasing the shock wave capacity and density, and improving work efficiency.

[0049] As another embodiment of the present application, a shock wave guide tube is disclosed, wherein the shock wave guide tube comprises the electrode assembly 100 as described above.

[0050] In this embodiment, a shock wave generator can be set at the rear end of the shock wave catheter, and a cable is connected to the inner tube 10 at the front end, and then the electrode assembly 100 is connected. When in use, the inner tube 10 and the balloon 20 are sent into the human body cavity. When the location of the calcified lesion is reached, the shock wave generator is started to form a shock wave in the balloon 20 to break up the calcified lesion. Specifically, due to the small size of the electrode assembly 100, the shock wave generator has good flexibility and good passability. When the inner tube 10 and the balloon 20 are sent, they can pass through the narrow cavity smoothly, thereby increasing the use scenarios of the shock wave catheter.

[0051] like Figure 7As shown, as an implementation of this embodiment, it is disclosed that the electrode assembly 100 is provided with a plurality of groups, and the plurality of groups of the electrode assembly 100 are arranged at intervals along the axial direction of the inner tube 10 .

[0052] In this embodiment, multiple groups of electrode assemblies 100 are provided to increase the intensity, speed and frequency of the shock wave, which is conducive to completely crushing calcified lesions of different depths and enhancing the use effect of the shock wave catheter. In addition, there is a gap between adjacent electrode assemblies 100, so the inner tube 10 maintains the original flexibility as much as possible. Compared with the longer electrode assembly 100 sleeved on the surface of the inner tube 10 in the axial direction, the shock wave catheter disclosed in this embodiment can be flexibly rotated and moved, and is easy to use.

[0053] For example Figure 7 As shown, as another implementation of this embodiment, a connecting wire 40 is provided between two adjacent groups of electrode assemblies 100. The input wire 140 is electrically connected to one of the first conductive members 110 in one group, one end of the connecting wire 40 is electrically connected to one of the first conductive members 110 in the group, and the other end is electrically connected to one of the first conductive members 110 in the other group; the output wire 150 is electrically connected to the first conductive member 110 in the other group; that is, only one input wire 140 and one output wire 150 need to be arranged along the axial direction of the inner tube 10 for external power supply.

[0054] In this embodiment, multiple groups of electrode assemblies 100 are connected in series through connecting wires 40, so that high-voltage electrical signals can be transmitted in sequence. Only one group of input wires 140 and output wires 150 need to be set up to connect the electrode assembly 100 at the end and the electrode assembly 100 at the head end, respectively, so as to build a path and transmit electrical signals. Compared with the solution in which each group of electrode assemblies 100 is provided with input wires 140 and output wires 150, this embodiment reduces the arrangement and use of wires, reduces costs, reduces the space occupied by the electrode assembly 100, and facilitates the arrangement of shock wave guide tubes.

[0055] like Figure 8As shown, as another implementation of this embodiment, a connecting wire 40 is provided between two adjacent groups of electrode assemblies 100, and input wires 140 are provided on both groups of electrode assemblies 100. The output wires 150 on the two groups of electrode assemblies 100 are the same wire, and the output wires on one group of electrode assemblies 100 and the output wires on one group of electrode assemblies 100 are connected to the output wire 150 through the connecting wire 40. When power is turned on, the two input wires 140 input electrical signals at the same time, and when the conductive liquid is broken down to form a path, the multiple groups of electrode assemblies 100 are connected in parallel through the connecting wire 40, and the electrical signals are uniformly output through the output wire 150. The parallel connection mode allows the two groups of electrode assemblies 100 to work at the same time. When one group of electrode assemblies 100 is damaged or fails, the other group of electrode assemblies 100 can continue to work, thereby increasing the service life of the shock wave guide tube.

[0056] In summary, the present application discloses an electrode assembly 100 of a shock wave catheter, wherein the shock wave catheter comprises an inner tube 10 and a balloon 20, wherein a chamber 30 for accommodating a conductive liquid is formed in the balloon 20, and the inner tube 10 is inserted into the chamber 30; the electrode assembly 100 is disposed in the chamber 30 and connected to the inner tube 10; wherein the electrode assembly 100 comprises a plurality of first conductive members 110 and a plurality of second conductive members 120, wherein the plurality of first conductive members 110 and the plurality of second conductive members 120 are alternately arranged in a ring shape on the inner tube 10; the first conductive members 110 and the second conductive members 120 are used to break through the conductive liquid to generate bubbles in an energized state to form a shock wave. The electrode assembly 100 disclosed in this embodiment generates bubbles by placing the first conductive member 110 and the second conductive member 120 in the chamber 30, and breaking through the conductive liquid in the chamber 30 in the energized state; the shock waves transmitted in all directions generated by the spontaneous expansion and collapse of the bubbles in the chamber 30 break the calcified plaques in the cavity. By setting a plurality of first conductive members 110 and a plurality of second conductive members 120, the efficiency of bubble generation is improved, and the first conductive members 110 and the second conductive members 120 are alternately arranged in a ring shape, and the overall structure of the electrode assembly 100 is short in length and thickness, so the flexibility of the overall structure of the shock wave guide tube is less affected, which is conducive to maintaining the passability of the shock wave guide tube, so that it can pass through the narrow cavity smoothly during use.

[0057] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other.

[0058] It should be noted that the present invention takes the electrode assembly of a shock wave guide tube as an example to introduce the specific structure and working principle of the present invention, but the application of the present invention is not limited to the electrode assembly of a shock wave guide tube, and can also be applied to the production and use of other similar workpieces.

[0059] It should be understood that the present invention is not limited to the precise structure described above and shown in the drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

[0060] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An electrode assembly of a shock wave catheter, the shock wave catheter comprising an inner tube and a balloon, the balloon having a chamber for containing a conductive liquid, the inner tube being inserted into the chamber; the electrode assembly being disposed in the chamber and connected to the inner tube; characterized in that: The electrode assembly includes a plurality of first conductive members and a plurality of second conductive members, and the plurality of first conductive members and the plurality of second conductive members are alternately arranged in a ring shape on the inner tube; the first conductive members and the second conductive members are used to break through the conductive liquid to generate bubbles in a power-on state to form a shock wave.

2. The electrode assembly of the shock wave guide tube according to claim 1, characterized in that: An insulating block is provided between adjacent first conductive members and second conductive members.

3. The electrode assembly of the shock wave guide tube according to claim 2, characterized in that: The insulating block includes a connecting portion and two partitioning portions, wherein the connecting portion is connected to the inner tube and is arranged along the circumferential direction of the inner tube; the two partitioning portions are both protrudingly arranged on a side of the connecting portion away from the inner tube; A first groove for arranging the first conductive member is formed between the two partition parts; or a second groove for arranging the second conductive member is formed between the two partition parts.

4. The electrode assembly of the shock wave guide tube according to claim 1, characterized in that: There are two first conductive members, and the two first conductive members are arranged opposite to each other along the radial direction of the inner tube; The electrode assembly comprises an input wire and an output wire, wherein the input wire is electrically connected to one of the first conductive members, and the output wire is electrically connected to another of the first conductive members; Wherein, the input wire and the output wire both extend along the axial direction of the inner tube and are used for external power supply.

5. The electrode assembly of the shock wave guide tube according to claim 1, characterized in that: A first connection area is provided on the first conductive member on a side facing the inner tube, and the first connection area is used for welding or bonding with the inner tube; and / or, A second connection area is provided on the second conductive member at a side facing the inner tube, and the second connection area is used for welding or bonding with the inner tube.

6. The electrode assembly of the shock wave guide tube according to claim 1, characterized in that: The first conductive member is in the shape of an arc, and the curvature of the inner surface of the first conductive member is equal to the curvature of the inner tube; and / or the second conductive member is in the shape of an arc, and the curvature of the inner surface of the second conductive member is equal to the curvature of the inner tube.

7. The electrode assembly of the shock wave guide tube according to claim 1, characterized in that: The electrode assembly comprises an insulating ring, which is sleeved on the outer sides of the first conductive member and the second conductive member.

8. A shock wave guide tube, characterized in that: An electrode assembly comprising the shock wave guide tube according to any one of claims 1 to 7.

9. The shock wave guide according to claim 8, characterized in that The electrode assemblies are provided in a plurality of groups, and the plurality of groups of electrode assemblies are arranged at intervals along the axial direction of the inner tube.

10. The shock wave guide according to claim 9, characterized in that A connecting wire is provided between two adjacent groups of electrode assemblies.

Images