Suspension electrode shockwave balloon

Abstract

The application belongs to the technical field of medical equipment and discloses a suspended electrode shock wave balloon, which comprises a balloon body and a catheter body arranged in the balloon body, wherein the catheter body is provided with an operating end at the end far from the balloon body, the position of an electrode structure is adjusted through an electromagnetic device, the electrode structure is designed in a suspended structure, the electrode structure keeps a small gap with the inner surface of the expanded balloon part, and the stability of the electrode structure is improved through the support structure of the electrode structure, which reduces the influence of the electrode on the flexibility of the balloon, provides a more stable discharge environment, and realizes accurate control of the electrode position through the monitoring of the electrode position by a Hall sensor, so that the doctor can more conveniently adjust the electrode position through the operating end to accurately aim at the lesion part during the operation process, and the convenience and accuracy of the operation are improved.

Description

Technical Field

[0001] This invention belongs to the field of medical device technology, specifically relating to a suspended electrode shockwave balloon. Background Technology

[0002] The electrohydraulic effect has a wide range of applications in the industrial and medical device industries. Currently, in the medical device industry, especially in interventional therapy, the shock waves generated by the electrohydraulic effect can be used to break down hard crystalline tissues in the body without damaging the body's soft tissues. This has a very good therapeutic effect on diseases such as stones and calcifications in the body, and therefore has a very broad development prospect. In the prior art, Chinese utility model application number CN202121760878.7 discloses a shock wave generating catheter, including a catheter body, a balloon, and an electrode unit. The balloon is located at the distal end of the catheter body, and the electrode unit is located on the catheter body inside the balloon. The balloon includes multiple balloon units arranged along the axial direction of the catheter body, and the axial length of the balloon unit is 1-3 times the maximum radial width of the balloon unit. This utility model allows the shock wave generating catheter to maintain a stable distance between the catheter body inside the balloon and the balloon when the catheter is bent during use, ensuring that the electrode unit is on the axis of the balloon. The electrode unit can release shock waves evenly in all directions, stabilizing the shock waves received by the balloon at all points, avoiding uneven distribution, and ensuring that the treatment area receives the required size of shock wave impact, thereby ensuring stable treatment effects, reducing the risk of danger, improving treatment efficiency and success rate, and having a simple structure that is easy to manufacture. While the above-mentioned technical solutions improve the stability of the electrode on the catheter body, the distance between the electrode and the vessel wall varies depending on the size of the blood vessel to be treated. A greater distance may affect the therapeutic effect of the shock wave. At the same time, each balloon unit contains an electrode unit that is required to be located in the center of the balloon unit, which is difficult to position in actual operation. The installation and fixation of the electrode unit requires high precision, otherwise the electrode unit may deviate from the center position, affecting the generation and propagation direction of the shock wave and reducing the therapeutic effect. The electrode unit is also prone to displacement during catheter insertion and operation, requiring additional measures to ensure its stability.

[0003] To address these issues, we propose a suspended electrode shockwave balloon. This innovative design employs a suspended electrode structure, maintaining a tiny gap between the electrode and the balloon surface, and securing it with special support points. This design reduces the impact of the electrode on the balloon's flexibility while providing a more stable discharge environment. Summary of the Invention

[0004] The purpose of this invention is to provide a suspended electrode shockwave balloon to address the issues raised in the background art. In existing technologies, the distance between the electrode and the vessel wall varies depending on the specifications of the blood vessel to be treated. A greater distance may affect the therapeutic effect of the shockwave. Furthermore, each balloon unit contains one electrode unit, which must be located at the center of the balloon unit. This poses significant positioning challenges in practice. The installation and fixation of the electrode unit require high precision; otherwise, the electrode unit may deviate from its central position, affecting the generation and propagation direction of the shockwave and reducing the therapeutic effect. During catheter insertion and operation, the electrode unit is also prone to displacement, requiring additional measures to ensure its stability.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: Suspended electrode shockwave balloon, including: The balloon body and the catheter body disposed inside the balloon body, wherein the end of the catheter body away from the balloon body is provided with an operating end, a heat dissipation structure is provided between the balloon body and the catheter body, and a conductive structure is provided inside the catheter body; The balloon body includes an inflatable balloon section, a sealing sleeve, and a connecting sleeve. One end of the inflatable balloon section and one end of the sealing sleeve are integrally formed with a first inflatable portion, and the other end of the inflatable balloon section and one end of the connecting sleeve are integrally formed with a second inflatable portion. The catheter body includes a slender catheter. The portion of the slender catheter located within the inner cavity of the expansion balloon has, from the inside out, a wire cavity, a coil channel, and an annular cavity. An electromagnetic device for adjusting the position of the electrode structure is disposed within the coil channel. A Hall sensor for monitoring the position of the electrode structure is disposed outside the inner cavity of the first expansion section of the catheter body. An expansion chamber is disposed between the expansion balloon and the slender catheter. A sealing layer is disposed between the connecting sleeve and the slender catheter. An electrode structure electrically connected to the conductive structure is disposed within the expansion chamber.

[0006] Furthermore, the electrode structure includes multiple sets of inner electrodes and multiple sets of outer electrodes. The multiple sets of inner electrodes and outer electrodes are all disposed within the expansion chamber. The multiple sets of inner electrodes and multiple sets of outer electrodes are all arranged at equal angles. The inner electrodes are disposed within the inner cavity of the outer electrodes. Multiple sets of inner electrodes and outer electrodes are provided, and the inner electrodes and outer electrodes are arranged on the same plane.

[0007] Furthermore, the inner electrode includes a first insulating sleeve, an inner wire is provided in the inner cavity of the first insulating sleeve, and multiple sets of inner electrode holes are opened on the outer side of the first insulating sleeve. The portion of the inner wire corresponding to the inner electrode hole is the inner pole. The external electrode includes a second insulating sleeve, the inner cavity of which is provided with an external conductor, and multiple sets of external electrode holes are opened on the outer side of the second insulating sleeve. The portion of the external conductor corresponding to the external electrode hole is the external electrode point.

[0008] Furthermore, both ends of the first insulating sleeve are provided with a first insulating tube, the outer side of the first insulating tube is integrally formed with multiple sets of first folds, and the inner cavity of the first insulating tube is provided with a first wire electrically connected to the inner wire. Both ends of the second insulating sleeve are provided with a second insulating tube, the outer side of the second insulating tube is integrally formed with multiple sets of second folds, and the inner cavity of the second insulating tube is provided with a second wire electrically connected to the outer wire.

[0009] Furthermore, the conductive structure includes a linear conductor disposed inside the conductor cavity and an annular conductor disposed inside the annular cavity. The linear conductor is electrically connected to the second conductor, and the annular conductor is electrically connected to the first conductor. The electromagnetic device is disposed between the annular conductor and the linear conductor.

[0010] Furthermore, the operating end includes an operating handle fixedly connected to the end of a slender conduit, the operating handle being provided with a wire sleeve and a connector.

[0011] Furthermore, the heat dissipation structure includes an inlet pipe and a drain pipe inserted into the connecting sleeve. Both the inlet pipe and the drain pipe are connected to a heat exchange ring pipe at one end of the second expansion section. The inner diameter of the heat exchange ring pipe is larger than the inner diameter of the slender conduit. A temperature sensor is provided on the outside of the slender conduit, which is aligned with the Hall sensor.

[0012] Furthermore, the inner diameter of the connecting sleeve is larger than the inner diameter of the sealing sleeve, and an inlet pipe is provided at the end of the connecting sleeve away from the second expansion portion. The outer diameters of the first expansion portion and the second expansion portion are the same as the outer diameter of the expansion balloon portion.

[0013] Furthermore, the length of the first insulating sleeve is less than the length of the second insulating sleeve, the multiple sets of inner electrode holes are arranged at equal intervals, and two sets of connecting blocks are provided between the first insulating sleeve and the second insulating sleeve.

[0014] Furthermore, the distance between the first insulating sleeve and the interior of the expansion balloon is greater than the distance between the second insulating sleeve and the inner wall of the expansion balloon, and the length of the second insulating sleeve is less than the length of the expansion balloon.

[0015] The suspended electrode shockwave balloon proposed in this invention has the following advantages compared with the prior art: 1. This invention utilizes the coordination between the balloon body, catheter body, electromagnetic device, and motor structure. The electromagnetic device adjusts the position of the electrode structure, and a suspended structure design is adopted for the electrode structure. The electrode structure maintains a small gap with the inner surface of the expanding balloon, and the support structure of the electrode structure improves the stability of the electrode structure. This design reduces the impact of the electrode on the flexibility of the balloon and provides a more stable discharge environment. Combined with the Hall sensor to monitor the electrode position, precise control of the electrode position is achieved. During the surgical operation, the doctor can more easily adjust the electrode position through the operating terminal to accurately align it with the lesion site, improving the convenience and accuracy of the operation. 2. The special structure of the inner and outer electrodes of this invention, through the design of the inner electrode's inner electrode hole and the outer electrode's outer electrode hole, as well as the setting of the inner and outer poles, facilitates the more efficient generation of a plasma arc in the conductive fluid, thereby enhancing the energy of the shock wave. When a high-voltage pulse is transmitted to the electrodes through the conductive structure, this electrode structure enables electrical energy to be converted into shock wave energy more efficiently, improving the ability to break up lesions such as calcified plaques and helping to improve the success rate of treatment; 3. The present invention utilizes the expansion balloon of the balloon body to integrally form the sealing sleeve and the connecting sleeve at both ends through the first expansion part and the second expansion part. This structure allows the balloon to better adapt to the morphological changes of blood vessels during expansion and contraction. When entering blood vessels and reaching the lesion site, the balloon can smoothly pass through blood vessel segments of different diameters and curvatures. After expansion, it can closely fit the blood vessel wall, providing a better conduction medium for the shock wave generated by the electrode and improving the treatment effect. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the catheter tip structure of the present invention; Figure 3 This is a schematic diagram of the internal structure of the balloon body of the present invention; Figure 4 This is a top view of the cross-sectional structure of the internal catheter of the present invention; Figure 5 This is a schematic diagram of the planar structure of the present invention; Figure 6 This is a front view of the internal catheter of the present invention. Figure 7 This is a schematic diagram of the electrode structure of the present invention.

[0017] In the diagram: 1. Balloon body; 11. Dilatation balloon section; 12. First dilatation section; 13. Sealing sleeve; 14. Second dilatation section; 15. Connecting sleeve; 16. Inlet tube; 17. Sealing layer; 18. Dilatation chamber; 2. Catheter body; 21. Slender catheter; 22. Lead wire cavity; 23. Annular cavity; 24. Coil channel; 25. Temperature sensor; 26. Hall sensor; 3. Operating end; 31. Operating handle; 32. Lead wire sleeve; 33. Connector; 4. Heat dissipation structure; 41. Water inlet tube; 42. Heat exchanger ring tube; 43. 5. Drainage pipe; 6. Conductive structure; 51. Linear conductor; 52. Ring conductor; 6. Electrode structure; 61. Inner electrode; 611. First insulating sleeve; 612. First insulating tube; 613. First fold; 614. Inner electrode hole; 615. Inner conductor; 616. Inner pole; 617. First conductor; 62. Outer electrode; 621. Second insulating sleeve; 622. Outer electrode hole; 623. Outer conductor; 624. Outer pole; 625. Second insulating tube; 626. Second fold; 627. Second conductor; 7. Electromagnetic device. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The specific embodiments described herein are merely used to explain the present invention and are not intended to limit the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] This invention provides, for example Figure 1-7 The suspended electrode shockwave balloon shown includes: The balloon body 1 and the catheter body 2 disposed inside the balloon body 1 are provided with an operating end 3 at the end of the catheter body 2 away from the balloon body 1, a heat dissipation structure 4 is provided between the balloon body 1 and the catheter body 2, and a conductive structure 5 is provided inside the catheter body 2. The balloon body 1 includes an expansion balloon portion 11, a sealing sleeve 13, and a connecting sleeve 15. One end of the expansion balloon portion 11 and one end of the sealing sleeve 13 are integrally formed with a first expansion portion 12, and the other end of the expansion balloon portion 11 and one end of the connecting sleeve 15 are integrally formed with a second expansion portion 14. The catheter body 2 includes a slender catheter 21. The portion of the slender catheter 21 located inside the expansion balloon 11 has, from the inside out, a wire cavity 22, a coil channel 24, and an annular cavity 23. An electromagnetic device 7 for adjusting the position of the electrode structure 6 is provided inside the coil channel 24. A Hall sensor 26 for monitoring the position of the electrode structure 6 is provided outside the first expansion section 12 of the catheter body 2. An expansion chamber 18 is provided between the expansion balloon 11 and the slender catheter 21. A sealing layer 17 is provided between the connecting sleeve 15 and the slender catheter 21. An electrode structure 6 electrically connected to the conductive structure 5 is provided inside the expansion chamber 18.

[0020] Electrode structure 6 includes multiple sets of inner electrodes 61 and multiple sets of outer electrodes 62. Both sets of inner electrodes 61 and outer electrodes 62 are disposed within the expansion chamber 18, and are arranged at equal angles. The inner electrodes 61 are located within the inner cavity of the outer electrodes 62. Multiple sets of both inner and outer electrodes 61 are provided, and corresponding inner electrodes 61 and outer electrodes 62 are arranged on the same plane. When a shock wave is generated, energy can diffuse more evenly in all directions. In treating calcified lesions in cardiovascular diseases, the uniform shock wave can act more comprehensively and precisely on the lesion site, improving treatment efficacy, reducing damage to surrounding normal blood vessel tissue, and enhancing the treatment effect in coronary artery calcification lesions. The precise shock wave action can effectively break up calcified plaques, restore vascular patency, and avoid problems such as vascular wall damage or incomplete treatment caused by uneven energy distribution.

[0021] The inner electrode 61 includes a first insulating sleeve 611, an inner wire 615 is provided in the inner cavity of the first insulating sleeve 611, and multiple sets of inner electrode holes 614 are opened on the outer side of the first insulating sleeve 611. The part of the inner wire 615 corresponding to the inner electrode hole 614 is the inner pole 616. When a high voltage pulse is transmitted to the inner pole 616 through the conductive structure 5, this electrode structure 6 can convert electrical energy into shock wave energy more efficiently, improve the ability to break up lesions such as calcified plaques, and help improve the success rate of treatment. The outer electrode 62 includes a second insulating sleeve 621. An outer conductor 623 is provided inside the cavity of the second insulating sleeve 621. Multiple sets of outer electrode holes 622 are opened on the outer side of the second insulating sleeve 621. The part of the outer conductor 623 corresponding to the outer electrode hole 622 is the outer pole 624. This allows the electrode to efficiently generate a plasma arc in the conductive fluid through the inner pole 616 and the outer pole 624 while providing insulation protection. The inner pole hole 614 and the outer pole hole 622 provide a specific conduction path for the current, optimize the electric field distribution, and enhance the generation effect of the shock wave.

[0022] Both ends of the first insulating sleeve 611 are provided with first insulating tubes 612. Multiple sets of first folded portions 613 are integrally formed on the outer side of the first insulating tube 612. The inner cavity of the first insulating tube 612 is provided with a first wire 617 electrically connected to the inner wire 615. Both ends of the second insulating sleeve 621 are provided with second insulating tubes 625. Multiple sets of second folded portions 626 are integrally formed on the outer side of the second insulating tube 625. The inner cavity of the second insulating tube 625 is provided with a second wire 627 electrically connected to the outer wire 623. This enhances the insulation performance and also improves the flexibility and stability of the electrode structure 6 to a certain extent. The first wire 617 and the second wire 627 are used for the electrical connection between the inner electrode 61 and the outer electrode 62 and the conductive structure 5, respectively, to ensure the effective transmission of electrical energy. The two sets of connecting blocks between the first insulating sleeve 611 and the second insulating sleeve 621 help maintain the relative positional relationship of the inner and outer electrodes 62, further ensuring the stability of the electrode structure 6 and the uniformity of the electric field distribution.

[0023] The conductive structure 5 includes a linear conductor 51 disposed inside the conductor cavity 22 and an annular conductor 52 disposed inside the annular cavity 23. The linear conductor 51 is electrically connected to the second conductor 627, and the annular conductor 52 is electrically connected to the first conductor 617. The electromagnetic device 7 is disposed between the annular conductor 52 and the linear conductor 51. By making reasonable use of the internal space of the slender conduit 21, the stable transmission of electrical energy from the operating end 3 to the electrode structure 6 is realized. The linear conductor 51 and the annular conductor 52 can effectively reduce the loss during the transmission of electrical energy and ensure that the electrode obtains enough energy to generate a powerful shock wave.

[0024] The operating end 3 includes an operating handle 31 fixedly connected to the end of the slender conduit 21. A wire sleeve 32 and a connector 33 are provided on the operating handle 31. The connector 33 is used to connect external devices, such as power supplies and control systems. Through the connector 33, the external devices can provide high-voltage pulses to the electrodes inside the balloon to generate shock waves, and simultaneously provide power to the electromagnetic device 7 to achieve electrode levitation control. The presence of the connector 33 ensures the electrical connection stability and reliability of the entire system, enabling the levitation electrode shock wave balloon to operate normally under the control of the external devices.

[0025] The heat dissipation structure 4 includes an inlet pipe 41 and a drain pipe 43 inserted into the connecting sleeve 15. Both the inlet pipe 41 and the drain pipe 43 are connected to a heat exchange ring pipe 42 at one end of the second expansion section 14. The inner diameter of the heat exchange ring pipe 42 is larger than the inner diameter of the slender conduit 21. A temperature sensor 25, aligned with the Hall sensor 26, is installed on the outer side of the slender conduit 21. When a shock wave is generated, heat is produced. The temperature sensor 25 in the heat dissipation structure 4 monitors the temperature of the balloon and the conduit in real time. When the temperature rises, coolant is introduced into the heat exchange ring pipe 42 through the inlet pipe 41. After the heat exchange ring pipe 42 absorbs heat, the coolant is discharged through the drain pipe 43. This effectively removes heat, ensuring that the balloon body 1 and the conduit body 2 operate within a safe temperature range, preventing overheating from affecting equipment performance and surrounding tissues, and ensuring stable system operation.

[0026] The inner diameter of the connecting sleeve 15 is larger than that of the sealing sleeve 13. An inlet tube 16 is provided at the end of the connecting sleeve 15 away from the second expansion part 14. The outer diameters of the first expansion part 12 and the second expansion part 14 are the same as the outer diameter of the expansion balloon part 11, which facilitates the inflation operation of the expansion balloon part 11. Conductive fluid can be injected into the balloon through the inlet tube 16 to expand the balloon and fix it to the lesion site in the blood vessel. The larger inner diameter of the connecting sleeve 15 is conducive to the rapid inflow of fluid, which improves the inflation efficiency of the balloon and also facilitates the drainage of fluid from the balloon after the operation.

[0027] The length of the first insulating sleeve 611 is less than the length of the second insulating sleeve 621. Multiple sets of inner electrode holes 614 are arranged at equal intervals. Two sets of connecting blocks are provided between the first insulating sleeve 611 and the second insulating sleeve 621. During the generation of plasma arc, the electric field distribution of the inner electrode 61 is different from that of the outer electrode 62. The shorter first insulating sleeve 611 helps to optimize the electric field environment around the inner electrode 61 and improve the efficiency of the inner electrode 61 in generating plasma arc. At the same time, it works together with the outer electrode 62 to achieve more stable and effective shock wave generation.

[0028] The distance between the first insulating sleeve 611 and the inside of the expansion balloon 11 is greater than the distance between the second insulating sleeve 621 and the inner wall of the expansion balloon 11. The length of the second insulating sleeve 621 is less than the length of the expansion balloon 11. This ensures the rationality of the electric field distribution inside the balloon, and the larger distance can avoid uneven electric field or possible discharge problems caused by the inner electrode 61 being too close to the balloon wall.

[0029] When the magnetically levitated electrode structure 6 is adjusted, the electromagnetic device 7 starts working during or after the expansion of the balloon 11. Current is supplied to the electromagnetic device 7 through the ring wire 52 and the linear wire 51. The electromagnetic device 7 generates a magnetic field. Due to the magnetic properties of the inner electrode 61 and the outer electrode 62, or their ability to interact with the magnetic field, the electrode structure 6 is levitated under the action of the magnetic force. At the same time, the Hall sensor 26 monitors the position of the electrode in real time and feeds the signal back to the external control system. Based on the feedback information, the control system adjusts the position of the electrode structure 6 precisely by adjusting the magnitude and direction of the current in the electromagnetic device 7, so that it is accurately aligned with the lesion site, ensuring that the shock wave generated subsequently can accurately act on the lesion site. Once the electrode structure 6 is positioned correctly, an external power supply provides a high-voltage pulse to the conductive structure 5 via the connector 33 of the operating terminal 3. The electrical energy is transmitted through the linear conductor 51 to the second conductor 627 of the outer electrode 62, and then to the outer conductor 623. Simultaneously, it is transmitted through the ring conductor 52 to the first conductor 617 of the inner electrode 61, and then to the inner conductor 615. Under the action of the high-voltage pulse, the inner electrode 61 and the outer electrode 62 generate a plasma arc in the conductive fluid through the inner electrode hole 614 and inner pole 616 of the first insulating sleeve 611 and the outer electrode hole 622 and outer pole 624 of the second insulating sleeve 621. The plasma arc rapidly heats the surrounding conductive fluid, causing it to vaporize and expand instantaneously, generating a shock wave. The shock wave propagates outward from the electrode, passes through the conductive fluid inside the expansion balloon 11, and then is transmitted through the balloon wall to the calcified lesion site on the blood vessel wall, causing the calcified plaque to rupture and loosen, thereby improving the patency of the blood vessel and achieving the therapeutic purpose.

[0030] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A suspended electrode shockwave balloon characterized in that, include: The balloon body (1) and the catheter body (2) disposed inside the balloon body (1) are provided with an operating end (3) at one end of the catheter body (2) away from the balloon body (1), a heat dissipation structure (4) is provided between the balloon body (1) and the catheter body (2), and a conductive structure (5) is provided inside the catheter body (2). The balloon body (1) includes an expansion balloon (11), a sealing sleeve (13) and a connecting sleeve (15). One end of the expansion balloon (11) and one end of the sealing sleeve (13) are integrally formed with a first expansion part (12), and the other end of the expansion balloon (11) and one end of the connecting sleeve (15) are integrally formed with a second expansion part (14). The catheter body (2) includes a slender catheter (21). The portion of the slender catheter (21) located in the inner cavity of the dilation balloon (11) is provided with a wire cavity (22), a coil channel (24) and an annular cavity (23) from the inside out. An electromagnetic device (7) for adjusting the position of the electrode structure (6) is provided in the coil channel (24). A Hall sensor (26) for monitoring the position of the electrode structure (6) is provided on the outer side of the inner cavity of the first dilation part (12) of the catheter body (2). An expansion chamber (18) is provided between the dilation balloon (11) and the slender catheter (21). A sealing layer (17) is provided between the connecting sleeve (15) and the slender catheter (21). An electrode structure (6) electrically connected to the conductive structure (5) is provided in the expansion chamber (18). The electrode structure (6) includes multiple sets of inner electrodes (61) and multiple sets of outer electrodes (62). The multiple sets of inner electrodes (61) and outer electrodes (62) are all disposed in the expansion chamber (18). The multiple sets of inner electrodes (61) and multiple sets of outer electrodes (62) are all arranged at equal angles. The inner electrode (61) is disposed in the inner cavity of the outer electrode (62). Multiple sets of inner electrodes (61) and outer electrodes (62) are provided. The inner electrodes (61) and outer electrodes (62) are disposed on the same plane. The inner electrode (61) includes a first insulating sleeve (611), an inner wire (615) is provided in the inner cavity of the first insulating sleeve (611), and multiple sets of inner electrode holes (614) are opened on the outer side of the first insulating sleeve (611). The part of the inner wire (615) corresponding to the inner electrode hole (614) is the inner pole (616). The external electrode (62) includes a second insulating sleeve (621), the inner cavity of the second insulating sleeve (621) is provided with an external conductor (623), and multiple sets of external electrode holes (622) are opened on the outer side of the second insulating sleeve (621). The part of the external conductor (623) corresponding to the external electrode hole (622) is the external pole (624).

2. The suspended electrode shockwave balloon according to claim 1, characterized in that: Both ends of the first insulating sleeve (611) are provided with a first insulating tube (612). The outer side of the first insulating tube (612) is integrally formed with multiple sets of first folds (613). The inner cavity of the first insulating tube (612) is provided with a first wire (617) electrically connected to the inner wire (615). Both ends of the second insulating sleeve (621) are provided with a second insulating tube (625). The outer side of the second insulating tube (625) is integrally formed with multiple sets of second folds (626). The inner cavity of the second insulating tube (625) is provided with a second wire (627) electrically connected to the outer wire (623).

3. The suspended electrode shockwave balloon according to claim 2, characterized in that: The conductive structure (5) includes a linear conductor (51) disposed inside the conductor cavity (22) and an annular conductor (52) disposed inside the annular cavity (23). The linear conductor (51) is electrically connected to the second conductor (627), and the annular conductor (52) is electrically connected to the first conductor (617). The electromagnetic device (7) is disposed between the annular conductor (52) and the linear conductor (51).

4. The suspended electrode shockwave balloon according to claim 3, characterized in that: The operating end (3) includes an operating handle (31) fixedly connected to the end of the slender conduit (21), a wire sleeve (32) is provided on the operating handle (31), and a connector (33) is provided on the operating handle (31).

5. The suspended electrode shockwave balloon according to claim 4, characterized in that: The heat dissipation structure (4) includes an inlet pipe (41) and a drain pipe (43) inserted into the connecting sleeve (15). The inlet pipe (41) and the drain pipe (43) are both connected to a heat exchange ring pipe (42) at one end of the second expansion part (14). The inner diameter of the heat exchange ring pipe (42) is larger than the outer diameter of the slender conduit (21). A temperature sensor (25) is provided on the outside of the slender conduit (21) in alignment with the Hall sensor (26).

6. The suspended electrode shockwave balloon according to claim 5, characterized in that: The inner diameter of the connecting sleeve (15) is larger than the inner diameter of the sealing sleeve (13). An inlet pipe (16) is provided at the end of the connecting sleeve (15) away from the second expansion part (14). The outer diameter of the first expansion part (12) and the outer diameter of the second expansion part (14) are the same as the outer diameter of the expansion balloon part (11).

7. The suspended electrode shockwave balloon according to claim 6, characterized in that: The length of the first insulating sleeve (611) is less than the length of the second insulating sleeve (621), and the multiple sets of inner pole holes (614) are arranged at equal intervals. Two sets of connecting blocks are provided between the first insulating sleeve (611) and the second insulating sleeve (621).

8. The suspended electrode shockwave balloon according to claim 7, characterized in that: The distance between the first insulating sleeve (611) and the inner wall of the expansion balloon (11) is greater than the distance between the second insulating sleeve (621) and the inner wall of the expansion balloon (11), and the length of the second insulating sleeve (621) is less than the length of the expansion balloon (11).

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