Annular interleaved electrode shockwave balloon catheter

Abstract

The application discloses a kind of annular staggered electrode shock wave balloon catheter, including balloon and carrier, the carrier is provided with multiple sets of annular insulating wire in rectangular array, multiple sets of annular insulating wire are all provided with annular conductive wire;The application can make the second electrode be annularly and evenly distributed by the design of multiple annular insulating wires and annular conductive wire, realize multi-point discharge, improve the spatial distribution uniformity of shock wave, can ensure that shock wave can evenly propagate along the circumferential direction of annular electrode during discharge, and by the extension conductive wire on annular conductive wire, so that adjacent extension conductive wire is arranged in staggered manner in balloon, can help to avoid mutual interference between adjacent electrodes, while increasing the number of discharge points, the shock wave generated by each electrode can be superimposed, form more uniform spatial distribution, can further improve the spatial distribution uniformity of shock wave, to improve the effect of lithotripsy.

Description

Technical Field

[0001] This invention belongs to the field of shockwave balloon catheter technology, and more specifically, relates to a ring-shaped interleaved electrode shockwave balloon catheter. Background Technology

[0002] Shockwave balloon catheterization is an innovative treatment technology primarily used to treat calcified vascular lesions, especially in coronary interventional procedures. The shockwave balloon catheterization system (IVL) applies extracorporeal shock wave lithotripsy to the coronary arteries. With the aid of the device, the shockwave balloon catheter delivers acoustic pressure waves to the calcified site, fracturing or loosening the calcified plaques within the blood vessel, thereby restoring blood flow and improving vascular compliance, paving the way for subsequent device treatments (such as balloon dilation or stent implantation).

[0003] Existing technology provides a shockwave balloon catheter (publication number CN221770172U). This utility model includes a catheter, a balloon, and functional components. One end of the catheter is inserted into the balloon, and liquid is filled between the balloon and the catheter. The functional components include a first wire and a second wire, which are spirally wound around the catheter and encapsulated within an annular channel. Along the extension direction of the catheter, the first wire has multiple first electrode ports, and the second wire has multiple second electrode ports. The multiple first electrode ports and multiple second electrode ports respectively form multiple electrode pairs, which are used to generate shock waves. Compared with the prior art, this application forms electrode pairs by opening electrode ports on two insulated wires. Each electrode pair includes a positive terminal and a negative terminal, so that the electrodes and opposite electrodes appear in pairs. This facilitates the control of the spacing and position of the positive and negative terminals in each electrode pair, achieving simultaneous discharge, and the discharge position is fixed.

[0004] The aforementioned shockwave balloon catheter has some problems in actual use. For example, the uneven distribution of electrodes inside the shockwave balloon catheter affects the shock wave fragmentation effect. The electrodes inside the shockwave balloon catheter are the key components for generating shock waves. The distribution of the electrodes directly affects the generation and conduction of shock waves. When the electrode distribution is uneven, the energy of the shock wave will also be unevenly distributed. The energy in some areas may be too high, leading to unnecessary tissue damage, while the energy in other areas may be too low, failing to effectively fragment the stones, resulting in poor stone fragmentation effect and even requiring multiple treatments. Therefore, we need to propose a ring-shaped staggered electrode shockwave balloon catheter. Summary of the Invention

[0005] The purpose of this invention is to provide a ring-shaped staggered electrode shock wave balloon catheter. Through the design of multiple ring-shaped insulating wires and ring-shaped conductive wires, the second electrode is uniformly distributed in a ring, enabling multi-point discharge and improving the spatial distribution uniformity of the shock wave. This ensures that during discharge, the shock wave propagates uniformly along the circumference of the ring electrode. Furthermore, the extended conductive wires on the ring-shaped conductive wires allow adjacent extended conductive wires to be arranged in a staggered manner within the balloon, helping to avoid mutual interference between adjacent electrodes. Simultaneously, it increases the number of discharge points, allowing the shock waves generated by each electrode to superimpose, forming a more uniform spatial distribution. This further improves the spatial distribution uniformity of the shock wave, thereby enhancing the lithotripsy effect and solving the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A ring-shaped interleaved electrode shockwave balloon catheter includes a balloon and a carrier. A cavity is provided inside the balloon. The carrier penetrates the balloon. A catheter is fixedly connected to one end of the balloon. A first connecting insulating wire is provided inside the catheter. A second connecting insulating wire is provided inside the first connecting insulating wire. The second connecting insulating wire extends into the cavity.

[0008] The carrier is provided with multiple sets of annular insulating wires in a rectangular array. Each set of annular insulating wires contains an annular conductive wire. A first connecting conductive wire is provided inside the second connecting insulating wire. The multiple sets of annular conductive wires are fixedly connected to the first connecting conductive wire. Multiple sets of second electrodes are fixedly connected to the multiple sets of annular conductive wires in a uniform circumferential direction. Multiple sets of extended insulating wires and extended conductive wires are fixedly connected in an annular array on the multiple sets of annular insulating wires. The extended conductive wires are disposed inside the extended insulating wires. A third electrode is fixedly connected to the multiple sets of extended insulating wires.

[0009] Preferably, the first connecting conductive wire has multiple sets of first electrodes arranged in a rectangular array, and the multiple sets of first electrodes are all fixedly connected to the first connecting conductive wire.

[0010] Preferably, the second connecting insulating wire is provided with a rectangular array of multiple sets of first clearance openings corresponding to the first electrode, and the first electrode is disposed within the first clearance opening.

[0011] Preferably, the extended conductive wires on the adjacent sides of the annular insulating wire are arranged in an alternating pattern.

[0012] Preferably, the annular insulating wire has multiple sets of second clearance openings that are uniformly opened along the circumference and correspond to the second electrode, and the second electrode is disposed in the second clearance opening.

[0013] Preferably, the surface of the extended insulating wire is provided with a third clearance opening, and the third electrode is disposed within the third clearance opening.

[0014] Preferably, a third connecting insulating wire is provided inside the conduit, a second connecting conductive wire is provided inside the third connecting insulating wire, a fourth electrode is provided at the end of the second connecting conductive wire, and the fourth electrode is disposed in the cavity.

[0015] Preferably, the conduit is provided with a flow supply channel, and the carrier, the first connecting insulating wire, and the third connecting insulating wire are all arranged in the flow supply channel.

[0016] Preferably, the balloon also includes a guidewire that passes through the balloon, and the carrier is fitted onto the guidewire.

[0017] Preferably, the balloon is made of a biocompatible material, and the surface of the balloon is coated with an anticoagulant coating.

[0018] Technical effects and advantages of the present invention: The annular interlaced electrode shockwave balloon catheter provided by the present invention has the following advantages compared with the prior art:

[0019] This invention, through the design of multiple ring-shaped insulating wires and ring-shaped conductive wires, enables the second electrode to be uniformly distributed in a ring, achieving multi-point discharge and improving the spatial distribution uniformity of the shock wave. It ensures that during discharge, the shock wave can propagate uniformly along the circumference of the ring electrode. Furthermore, through the extended conductive wires on the ring-shaped conductive wires, adjacent extended conductive wires are arranged in an interlaced manner within the sphere, which helps to avoid mutual interference between adjacent electrodes. At the same time, it increases the number of discharge points, and the shock waves generated by each electrode can superimpose to form a more uniform spatial distribution, further improving the spatial distribution uniformity of the shock wave and thus enhancing the stone crushing effect. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the present invention;

[0021] Figure 2 This is one of the cross-sectional structural schematic diagrams of the present invention;

[0022] Figure 3 This is a second cross-sectional structural schematic diagram of the present invention;

[0023] Figure 4 This is a schematic diagram of the structure of the second connecting insulating wire, the ring insulating wire, and the extended insulating wire of the present invention.

[0024] Figure 5 This is a cross-sectional view of the second connecting insulating wire, the ring insulating wire, and the extended insulating wire of the present invention.

[0025] In the diagram: 1. Balloon; 2. Catheter; 3. Guidewire; 4. Carrier; 5. Supply channel; 6. Cavity; 7. First connecting insulated wire; 8. Second connecting insulated wire; 9. First connecting conductive wire; 10. Annular insulated wire; 11. First clearance opening; 12. First electrode; 13. Annular conductive wire; 14. Second clearance opening; 15. Second electrode; 16. Extended insulated wire; 17. Extended conductive wire; 18. Third clearance opening; 19. Third electrode; 20. Third connecting insulated wire; 21. Fourth electrode; 22. Second connecting conductive wire. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without inventive effort are within the scope of protection of this invention.

[0027] This invention provides, for example Figure 1-5 The annular interleaved electrode shockwave balloon catheter shown includes a balloon 1 and a carrier 4. A cavity 6 is provided inside the balloon 1. The carrier 4 penetrates the balloon 1. A catheter 2 is fixedly connected to one end of the balloon 1. A first connecting insulating wire 7 is provided inside the catheter 2. A second connecting insulating wire 8 is provided inside the first connecting insulating wire 7. The second connecting insulating wire 8 extends into the cavity 6.

[0028] The carrier 4 has multiple sets of annular insulating wires 10 arranged in a rectangular array. Each set of annular insulating wires 10 contains an annular conductive wire 13. The second connecting insulating wire 8 contains a first connecting conductive wire 9. The multiple sets of annular conductive wires 13 are fixedly connected to the first connecting conductive wire 9. Multiple sets of second electrodes 15 are uniformly fixedly connected to the multiple sets of annular conductive wires 13 in a circumferential direction. Multiple sets of extended insulating wires 16 and extended conductive wires 17 are fixedly connected in an annular array on the multiple sets of annular insulating wires 10. The extended conductive wires 17 are disposed within the extended insulating wires 16. A third electrode 19 is fixedly connected to each set of extended insulating wires 16.

[0029] In an optional embodiment: a plurality of first electrodes 12 are arranged in a rectangular array on the first connecting conductive wire 9, and the plurality of first electrodes 12 are all fixedly connected to the first connecting conductive wire 9.

[0030] In an optional embodiment: the second connecting insulating wire 8 is provided with a rectangular array of multiple sets of first clearance openings 11 corresponding to the first electrode 12, and the first electrode 12 is disposed in the first clearance opening 11.

[0031] It should be noted that the first clearance opening 11 allows the first electrode 12 to be exposed inside the cavity 6, enabling the first electrode 12 to come into contact with the fluid inside the cavity 6.

[0032] In an optional embodiment, the extended conductive wires 17 on the sides of adjacent annular insulating wires 10 are staggered.

[0033] It should be noted that by extending the conductive wires 17 in an interlaced manner, that is, the centers of adjacent second electrodes 15 are not on the same horizontal line, but are staggered by a certain distance, this arrangement can help avoid mutual interference between adjacent electrodes, while increasing the number of discharge points. The shock waves generated by each electrode can be superimposed to form a more uniform spatial distribution, which can improve the spatial distribution uniformity of the shock waves and improve the stone crushing effect.

[0034] In addition, a gap is left between the extended conductive wire 17 and the adjacent annular insulating wire 10 to prevent affecting the flexibility of the shock wave balloon catheter.

[0035] In an optional embodiment: the annular insulating wire 10 is provided with multiple sets of second clearance openings 14 corresponding to the second electrode 15, and the second electrode 15 is disposed in the second clearance openings 14.

[0036] It should be noted that the second clearance opening 14 allows the second electrode 15 to be exposed inside the cavity 6, enabling the second electrode 15 to come into contact with the fluid inside the cavity 6.

[0037] In an optional embodiment: a third clearance opening 18 is provided on the surface of the extended insulating wire 16, and the third electrode 19 is disposed within the third clearance opening 18.

[0038] It should be noted that the third clearance opening 18 allows the third electrode 19 to be exposed inside the cavity 6, enabling the third electrode 19 to come into contact with the fluid inside the cavity 6.

[0039] In an optional embodiment: a third connecting insulating wire 20 is provided inside the conduit 2, a second connecting conductive wire 22 is provided inside the third connecting insulating wire 20, a fourth electrode 21 is provided at the end of the second connecting conductive wire 22, and the fourth electrode 21 is provided inside the cavity 6.

[0040] It should be noted that the electric arc between the fourth electrode 21 and the first electrode 12, the second electrode 15, and the third electrode 19 in the fluid is used to generate shock waves in the fluid. The shock waves will be conducted through the fluid, balloon 1, blood, and blood vessel walls to the calcified lesion area. Here, the energy will cause the sclerotic plaque to break up without the balloon 1 applying excessive pressure to the arterial wall.

[0041] In an optional embodiment: the conduit 2 is provided with a flow supply channel 5, and the carrier 4, the first connecting insulating wire 7, and the third connecting insulating wire 20 are all arranged in the flow supply channel 5.

[0042] It should be noted that, through the setting of the flow supply channel 5, fluid can be transported from the flow supply channel 5 to the cavity 6.

[0043] In an optional embodiment, a guidewire 3 is also included, which penetrates the balloon 1, and the carrier 4 is sleeved on the guidewire 3.

[0044] Preferably, the balloon 1 is made of a biocompatible material, and the surface of the balloon 1 is coated with an anticoagulant coating. The biocompatible material ensures that the balloon will not cause rejection or toxicity when used in the human body, guaranteeing patient safety. The anticoagulant coating prevents blood from clotting on the balloon surface, thereby reducing the risk of thrombosis and improving the safety and effectiveness of the treatment.

[0045] It should be noted that guidewire 3 can be used to guide the balloon catheter to accurately reach the lesion site.

[0046] 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 ring-shaped interleaved electrode shockwave balloon catheter, characterized in that: Includes a balloon (1) and a carrier (4), wherein a cavity (6) is provided inside the balloon (1), the carrier (4) penetrates the balloon (1), a catheter (2) is fixedly connected to one end of the balloon (1), a first connecting insulating wire (7) is provided inside the catheter (2), a second connecting insulating wire (8) is provided inside the first connecting insulating wire (7), and the second connecting insulating wire (8) extends into the cavity (6); The carrier (4) is provided with multiple sets of annular insulating wires (10) arranged in a rectangular array. Each set of annular insulating wires (10) is provided with annular conductive wires (13). The second connecting insulating wire (8) is provided with a first connecting conductive wire (9). The multiple sets of annular conductive wires (13) are fixedly connected to the first connecting conductive wires (9). Multiple sets of second electrodes (15) are fixedly connected in a uniform circumferential direction on the multiple sets of annular conductive wires (13). Multiple sets of extended insulating wires (16) and extended conductive wires (17) are fixedly connected in an annular array on the multiple sets of annular insulating wires (10). The extended conductive wires (17) are arranged inside the extended insulating wires (16). A third electrode (19) is fixedly connected on the multiple sets of extended insulating wires (16).

2. The annular interlaced electrode shockwave balloon catheter according to claim 1, characterized in that: The first connecting conductive wire (9) is provided with multiple sets of first electrodes (12) arranged in a rectangular array, and the multiple sets of first electrodes (12) are all fixedly connected to the first connecting conductive wire (9).

3. The annular interlaced electrode shockwave balloon catheter according to claim 1, characterized in that: The second connecting insulating wire (8) is provided with multiple sets of first clearance openings (11) corresponding to the first electrode (12) in a rectangular array, and the first electrode (12) is disposed in the first clearance opening (11).

4. The annular interlaced electrode shockwave balloon catheter according to claim 1, characterized in that: The extended conductive wires (17) on the sides of the adjacent annular insulating wire (10) are arranged in an alternating manner.

5. The annular interlaced electrode shockwave balloon catheter according to claim 1, characterized in that: The annular insulating wire (10) has multiple sets of second clearance openings (14) that are uniformly opened along the circumference and correspond to the second electrode (15). The second electrode (15) is located in the second clearance opening (14).

6. The annular interlaced electrode shockwave balloon catheter according to claim 1, characterized in that: The surface of the extended insulating wire (16) is provided with a third clearance opening (18), and the third electrode (19) is disposed in the third clearance opening (18).

7. The annular interlaced electrode shockwave balloon catheter according to claim 1, characterized in that: The conduit (2) is provided with a third connecting insulating wire (20), the third connecting insulating wire (20) is provided with a second connecting conductive wire (22), the end of the second connecting conductive wire (22) is provided with a fourth electrode (21), and the fourth electrode (21) is provided in the cavity (6).

8. The annular interlaced electrode shockwave balloon catheter according to claim 1, characterized in that: The conduit (2) is provided with a flow channel (5), and the carrier (4), the first connecting insulating wire (7), and the third connecting insulating wire (20) are all located in the flow channel (5).

9. The annular interlaced electrode shockwave balloon catheter according to claim 1, characterized in that: It also includes a guidewire (3), which penetrates the balloon (1), and the carrier (4) is fitted on the guidewire (3).

10. The annular interlaced electrode shockwave balloon catheter according to claim 1, characterized in that: The balloon (1) is made of biocompatible material and the surface of the balloon (1) is coated with an anticoagulant coating.

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