Valve impact wave balloon catheter

Abstract

The application provides a valve shock wave balloon catheter, relates to the technical field of medical devices, and provides a valve shock wave balloon catheter, which comprises a balloon, a catheter component, a handle and an electrode assembly. One end of the catheter component is connected with the handle, and the other end of the catheter component is provided with the balloon. The balloon is used for being implanted into a valve ring, and the balloon has a balloon wall which abuts against a valve in the axial direction of the valve ring. The electrode assembly is installed in the interior of the balloon, and the discharge port of the electrode assembly faces the balloon wall. The valve shock wave balloon catheter provided by the application can make the shock wave energy generated by the discharge in the discharge port act on the aortic valve in the axial direction of the valve ring, so that the shock wave energy can not act on the aortic valve in the radial direction of the balloon, and thus the aortic valve can be not only softened and expanded, but also can be prevented from being torn.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a valve shockwave balloon catheter. Background Technology

[0002] Valve calcification is a major cause of aortic valve stenosis in the elderly. Aortic valve stenosis can induce a series of complications, such as ventricular hypertrophy, and in severe cases, can lead to death from heart failure. Currently, transcatheter aortic valve replacement (TAVR) surgery using a metal stent and a polymeric or bioprosthetic valve is considered an effective clinical treatment for aortic valve calcification in the elderly.

[0003] In clinical practice, catheter-directed aortic valve replacement (TAVR) often presents challenges. Because the replacement valve stents are primarily self-expanding nickel-titanium stents, after implantation into the aortic valve annulus, they rub against and compress against the existing calcified plaques within the heart. This friction and compression can lead to localized stress concentration within the stent, compromising the surgical outcome. For example, if the plaque is too large, the stent may not be able to return to its designed shape, resulting in abnormal valve opening and causing central regurgitation or paravalvular leak. Furthermore, excessive localized stress concentration can lead to fatigue fracture of the stent before its designed lifespan due to excessive alternating local loads post-operatively, resulting in valve failure and posing a life-threatening risk to the patient.

[0004] Given the above background, the industry currently performs aortic balloon dilation (BAV) on the aortic valve before TAVR surgery. For patients suitable for BAV surgery, a shock wave generator is installed inside the balloon. After the balloon is inflated to expand and shape the aortic valve, the shock wave energy is released to further break up the calcified plaques inside and outside the valve, thereby softening the valve. However, because the shock wave acts radially on the arterial valve, there is a risk of aortic annular tearing during the procedure. Summary of the Invention

[0005] The purpose of this invention is to provide a valve shockwave balloon catheter to alleviate the technical problem of the risk of aortic valve annulus tearing during aortic balloon dilation.

[0006] In a first aspect, the valve shockwave balloon catheter provided by the present invention includes: a balloon, a catheter component, a handle, and an electrode assembly;

[0007] One end of the catheter component is connected to the handle, and the other end of the catheter component is fitted with the balloon;

[0008] The balloon is used for implantation within the valve annulus, and the balloon has a balloon wall that abuts against the valve along the axial direction of the valve annulus.

[0009] The electrode assembly is installed inside the balloon, with the discharge port of the electrode assembly facing the balloon wall.

[0010] In conjunction with the first aspect, the present invention provides a first possible implementation of the first aspect, wherein the balloon includes a first cavity portion, and the balloon wall is disposed at the front of the first cavity portion;

[0011] From the rear end to the front end of the balloon, the discharge port of the electrode assembly is inclined in a direction away from the axis of the catheter component.

[0012] In conjunction with the first aspect, the present invention provides a second possible implementation of the first aspect, wherein the balloon further includes a second cavity sac;

[0013] The first sac portion is connected to the second sac portion, and a valve receiving groove is formed between the sac wall and the second sac portion, with the discharge port facing the valve receiving groove.

[0014] In conjunction with the first aspect, the present invention provides a third possible implementation of the first aspect, wherein the electrode assembly comprises: an inner electrode, an outer electrode, and an insulating layer;

[0015] The outer electrode is sleeved on the outside of the inner electrode, and the insulating layer is installed between the inner electrode and the outer electrode;

[0016] The inner electrode is connected to a high-voltage power supply, the outer electrode is grounded, and the discharge port is formed between the inner electrode and the outer electrode;

[0017] The end face of the inner electrode and the end face of the insulating layer are both located inside the outer electrode, and the end faces of the outer electrode, the inner electrode, and the insulating layer form a step difference in sequence.

[0018] In conjunction with the first aspect, the present invention provides a fourth possible implementation of the first aspect, wherein the conduit component includes: an outer tube, an inner tube, and an end cap;

[0019] The inner tube passes through the outer tube and is in fluid communication with the balloon;

[0020] The electrode assembly passes through the outer tube and extends into the interior of the balloon;

[0021] The rear end of the balloon is connected to the outer tube, the end is located at the front end of the balloon, and the end is connected to the inner tube.

[0022] In conjunction with the fourth possible implementation of the first aspect, the present invention provides a fifth possible implementation of the first aspect, wherein the inner tube is provided with an injection chamber and a guide wire chamber, the injection chamber and the guide wire chamber are spaced apart and extend along the axial direction of the inner tube respectively;

[0023] The guidewire cavity is connected to the guidewire hole at the end, and the injection cavity is in fluid communication with the balloon.

[0024] In conjunction with the fourth possible implementation of the first aspect, the present invention provides a sixth possible implementation of the first aspect, wherein the outer tube is provided with an inner cavity and a plurality of electrode conduit cavities, the inner cavity and the plurality of electrode conduit cavities are spaced apart and extend along the axial direction of the outer tube respectively;

[0025] The inner tube passes through the inner cavity, and the multiple electrode assemblies pass through the multiple electrode catheter cavities one by one and extend into the balloon.

[0026] In conjunction with the sixth possible implementation of the first aspect, the present invention provides a seventh possible implementation of the first aspect, wherein the cross-section of the electrode conduit lumen has a circumferential limiting portion adapted to the electrode conduit;

[0027] The electrode conduit is slidably inserted into the electrode conduit cavity, the electrode conduit extends into the interior of the balloon, and the electrode assembly is installed inside the electrode conduit.

[0028] In conjunction with the seventh possible implementation of the first aspect, the present invention provides an eighth possible implementation of the first aspect, wherein the electrode catheter is provided with an electrode receiving cavity and an elastic material cavity, the electrode assembly is installed in the electrode receiving cavity, and a shape memory alloy is installed inside the elastic material cavity so that the electrode catheter has a tendency to extend toward the valvular lesion site.

[0029] In conjunction with the seventh possible implementation of the first aspect, the present invention provides a ninth possible implementation of the first aspect, wherein the handle comprises: a housing, a slider, and a guide seat;

[0030] The slider is slidably connected to the housing, and the conduit seat is connected to the housing;

[0031] The inner tube passes through the outer shell and is in fluid communication with the conduit seat;

[0032] The electrode conduit is connected to the slider.

[0033] The embodiments of the present invention bring the following beneficial effects: one end of the catheter component is connected to the handle, and the other end of the catheter component is equipped with a balloon. The balloon is used to be implanted in the valve annulus, and the balloon has a sac wall that abuts against the valve along the axial direction of the valve annulus. The electrode assembly is installed inside the balloon, and the discharge port of the electrode assembly faces the sac wall. The shock wave energy generated by the discharge inside the discharge port can act on the aortic valve along the axial direction of the valve annulus. This can avoid the shock energy acting entirely on the aortic valve along the radial direction of the balloon, thereby not only softening and opening the aortic valve, but also preventing the aortic valve from tearing.

[0034] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the specific embodiments or related technologies of the present invention, the drawings used in the description of the specific embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0036] Figure 1 A cross-sectional view of the valve shockwave balloon catheter provided in an embodiment of the present invention;

[0037] Figure 2 A partial schematic diagram of the balloon, catheter components, and electrode assembly of the valve shockwave balloon catheter provided in an embodiment of the present invention;

[0038] Figure 3 This is a partial cross-sectional view of the electrode catheter and electrode assembly of the valve shockwave balloon catheter provided in an embodiment of the present invention;

[0039] Figure 4 This is a partial schematic diagram of the catheter components and electrode assembly of the valve shockwave balloon catheter provided in an embodiment of the present invention;

[0040] Figure 5 A schematic cross-sectional view of the inner tube of the valve shockwave balloon catheter provided in an embodiment of the present invention;

[0041] Figure 6 A schematic cross-sectional view of the outer tube of the inner tube of the valve shockwave balloon catheter provided in an embodiment of the present invention;

[0042] Figure 7 A schematic cross-sectional view of the electrode catheter of the inner tube of the valve shockwave balloon catheter provided in an embodiment of the present invention;

[0043] Figure 8This is a schematic diagram of the handle of the valve shockwave balloon catheter provided in an embodiment of the present invention.

[0044] Icons: 100 - Balloon; 101 - Valve Receiving Groove; 110 - First Lumen Balloon Section; 111 - Balloon Wall; 120 - Second Lumen Balloon Section; 200 - Catheter Components; 210 - Outer Tube; 211 - Inner Lumen; 212 - Electrode Catheter Lumen; 220 - Inner Tube; 221 - Injection Lumen; 222 - Guidewire Lumen; 230 - End; 240 - Electrode Catheter; 241 - Electrode Receiving Lumen; 242 - Elastic Material Lumen; 250 - Imaging Ring; 300 - Handle; 301 - Filling Port; 302 - Guidewire Port; 303 - Lead Wire Port; 310 - Outer Shell; 320 - Slider; 330 - Catheter Seat; 340 - Positioning Pin; 400 - Electrode Assembly; 401 - Discharge Port; 410 - Inner Electrode; 420 - Outer Electrode; 430 - Insulating Layer. Detailed Implementation

[0045] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of 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.

[0046] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Physical quantities in formulas, unless otherwise specified, should be understood as basic quantities in the International System of Units (SI), or derived quantities derived from basic quantities through mathematical operations such as multiplication, division, differentiation, or integration.

[0047] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0048] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the valve shockwave balloon catheter provided in this embodiment of the invention includes: a balloon 100, a catheter component 200, a handle 300, and an electrode assembly 400; one end of the catheter component 200 is connected to the handle 300, and the other end of the catheter component 200 is fitted with the balloon 100; the balloon 100 is used to be implanted into the valve annulus, and the balloon 100 has a balloon wall 111 that abuts against the valve along the axial direction of the valve annulus; the electrode assembly 400 is installed inside the balloon 100, and the discharge port 401 of the electrode assembly 400 faces the balloon wall 111.

[0049] During aortic balloon dilation, the balloon 100 and catheter assembly 200 are implanted and retrieved by pushing the handle 300. The discharge port 401 faces the balloon wall 111, allowing the shock wave energy generated inside the discharge port 401 to act on the balloon wall 111. The shock wave impacts the balloon wall 111 along the axis of the valve annulus and impacts the valve, avoiding the technical problem of aortic valve tearing caused by the shock wave acting entirely radially on the aortic valve. In addition, the shock wave transmitted along the axis of the balloon 100 can act on the aortic valve through the balloon wall 111, which can assist the balloon 100 in softening the aortic valve.

[0050] In this embodiment of the invention, the balloon 100 includes a first cavity balloon portion 110, and a balloon wall 111 is disposed at the front of the first cavity balloon portion 110. From the rear end (proximal end) to the front end (distal end) of the balloon 100, the electrode assembly 400 is inclined in a direction away from the axis of the catheter component 200. The shock wave generated inside the discharge port 401 is directed toward the balloon wall 111 and transmitted in a direction away from the axis of the valve annulus. This not only has the function of radially impacting and opening the aortic valve, but also can directionally release the impact energy forward to the valve, thereby better achieving aortic valve softening while preventing valve tearing.

[0051] Furthermore, the electrode assembly 400 includes: an inner electrode 410, an outer electrode 420, and an insulating layer 430; the outer electrode 420 is sleeved on the outside of the inner electrode 410, and the insulating layer 430 is installed between the inner electrode 410 and the outer electrode 420; the inner electrode 410 is connected to a high-voltage power supply, the outer electrode 420 is grounded, and a discharge port 401 is formed between the inner electrode 410 and the outer electrode 420; the end face of the inner electrode 410 and the end face of the insulating layer 430 are both located inside the outer electrode 420, and the end face of the outer electrode 420, the end face of the inner electrode 410, and the end face of the insulating layer 430 form a step in sequence.

[0052] Specifically, both the inner electrode 410 and the outer electrode 420 are made of stainless steel tubing, the insulating layer 430 is made of PI tubing, and the opening of the outer electrode 420 serves as the discharge port 401. The end faces of the outer electrode 420, the inner electrode 410, and the insulating layer 430 form a step difference in sequence, thereby increasing the relatively exposed area of ​​the inner electrode 410 and the outer electrode 420. Under the condition that there is a high voltage potential difference between the inner electrode 410 and the outer electrode 420, a breakdown discharge phenomenon is formed between the inner electrode 410 and the outer electrode 420, thereby generating an electric arc explosion. The shock wave energy generated by the explosion is released outward from the discharge port 401 at the end of the outer electrode 420, thereby achieving the purpose of impacting the capsule wall 111. The step difference between the distal end face of the outer electrode 420 and the distal end face of the inner electrode 410 can be configured to be 0.5 mm, and the step difference between the distal end face of the inner electrode 410 and the distal end face of the insulating layer 430 can be configured to be 1 mm. When performing a discharge operation, the electrode assembly 400 is immersed in the filling fluid inside the bulb 100. An arc discharge explosion occurs inside the discharge port 401, and the resulting shock wave energy acts on the filling fluid. The filling fluid transmits the shock wave outward along the distal opening of the outer electrode 420, thereby achieving the effect of forward directional discharge.

[0053] like Figure 1 and Figure 2 As shown, the balloon 100 also includes a second cavity balloon portion 120; the first cavity balloon portion 110 is connected to the second cavity balloon portion 120, and a valve receiving groove 101 is formed between the balloon wall 111 and the second cavity balloon portion 120, with the discharge port 401 facing the valve receiving groove 101.

[0054] Specifically, the radial dimension of the first balloon portion 110 and the second balloon portion 120 after inflation is 16mm to 26mm. The axial dimension of the waist portion between the first balloon portion 110 and the second balloon portion 120 is 8mm to 20mm, and the radial dimension of the waist portion is smaller than the radial dimension of the first balloon portion 110 and the second balloon portion 120 after inflation, and the radial dimension of the waist portion is 14mm to 18mm. When the balloon 100 is implanted into the valve position, the waist portion of the balloon is located within the valve annulus, the valve is located within the valve receiving groove 101, and the valve is located between the first balloon portion 110 and the second balloon portion 120, thereby achieving anchoring of the balloon 100 relative to the valve position. As the balloon 100 gradually inflates, the radial dimension of the waist gradually increases, thereby opening the valve opening. The opening direction of the discharge port 401 is from the proximal end to the distal end towards the valve receiving groove 101, which can impact the calcified valve located inside the valve receiving groove 101, thereby assisting in softening the valve.

[0055] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the catheter assembly 200 includes an outer tube 210, an inner tube 220, and a tip 230. The inner tube 220 passes through the outer tube 210 and is in fluid communication with the balloon 100. The electrode assembly 400 passes through the outer tube 210 and extends into the balloon 100. The rear end of the balloon 100 is connected to the outer tube 210, and the tip 230 is located at the front end of the balloon 100 and connected to the inner tube 220. The tip 230 is configured as a TIP tip with a pointed tip for guidance during implantation. The material of the tip 230 can be PEBAX 3533 to ensure it is soft enough to prevent scratching the vessel wall. A guidewire can pass through the inner tube 220 and the tip 230 so that the catheter assembly 200 can be implanted along the guidewire. A imaging ring 250 is installed on the inner tube 220, which can make the position of the imaging ring 250 correspond to the position of the balloon 100 along the axial direction. The position of the balloon 100 can be determined by detecting the position of the imaging ring 250.

[0056] like Figure 2 , Figure 4 and Figure 5 As shown, the inner tube 220 is provided with an injection chamber 221 and a guidewire chamber 222, which are spaced apart and extend along the axial direction of the inner tube 220. The guidewire chamber 222 communicates with the guidewire hole of the end 230, and the injection chamber 221 is in fluid communication with the balloon 100. Liquid can be injected into the balloon 100 through the injection chamber 221, thereby achieving the inflation or deflation of the balloon 100. The guidewire can pass through the guidewire chamber 222 and the end 230, so that the inner tube 220 has the functions of both inflation liquid delivery and guidewire insertion.

[0057] like Figure 2 , Figure 4 , Figure 6 and Figure 7 As shown, the outer tube 210 is provided with an inner cavity 211 and multiple electrode catheter cavities 212. The inner cavity 211 and multiple electrode catheter cavities 212 are spaced apart and extend along the axial direction of the outer tube 210 respectively. The inner tube 220 passes through the inner cavity 211, and multiple electrode assemblies 400 pass through the multiple electrode catheter cavities 212 one by one and extend into the interior of the balloon 100.

[0058] Specifically, multiple electrode catheter cavities 212 are spaced apart around the inner cavity 211, and multiple electrode catheters 240 are slidably inserted into the multiple electrode catheter cavities 212 in a corresponding manner. Electrode assemblies 400 are installed in the multiple electrode catheters 240 respectively. The shock waves emitted by the multiple electrode assemblies 400 act on the valve in the circumferential direction, thereby ensuring that the valve is uniformly softened in the circumferential direction.

[0059] Furthermore, the cross-section of the electrode conduit cavity 212 has a circumferential limiting portion adapted to the electrode conduit 240; the electrode conduit 240 is slidably inserted into the electrode conduit cavity 212, the electrode conduit 240 extends into the interior of the balloon 100, and the electrode assembly 400 is installed inside the electrode conduit 240.

[0060] Specifically, the cross-section of the electrode conduit channel 212 can be configured as a cam cross-section, or it can be replaced by other polygons. The electrode conduit 240 is inserted into the electrode conduit channel 212, and the electrode conduit 240 can slide along the electrode conduit channel 212 to adjust the installation position, thereby adjusting the distance between the electrode assembly 400 and the calcified valve.

[0061] Furthermore, the electrode catheter 240 is provided with an electrode receiving cavity 241 and an elastic material cavity 242. The electrode assembly 400 is installed in the electrode receiving cavity 241, and the elastic material cavity 242 is filled with a shape memory alloy so that the electrode catheter 240 tends to extend toward the valvular lesion site.

[0062] Specifically, the electrode assembly 400 is inserted at the distal end of the electrode receiving cavity 241. The shape memory alloy can be made of nickel-titanium material, which is elastic. The part of the electrode conduit 240 extending out of the electrode conduit cavity 212 is tilted away from the axis of the inner tube 220 under the action of the shape memory alloy, so that multiple electrode assemblies 400 are all facing the valve receiving groove 101. The shock wave generated by the electrode assembly 400 can act on the calcified valve, thereby achieving the softening treatment of the valve.

[0063] like Figure 1 , Figure 2 , Figure 4 , Figure 5 , Figure 6 and Figure 8 As shown, the handle 300 includes: a housing 310, a slider 320, and a conduit seat 330; the slider 320 is slidably connected to the housing 310, and the conduit seat 330 is connected to the housing 310; the inner tube 220 passes through the housing 310, and the inner tube 220 is in fluid communication with the conduit seat 330; the electrode conduit 240 is connected to the slider 320.

[0064] Specifically, the proximal end of the electrode conduit 240 is connected to the positioning pin 340. The head of the positioning pin 340 is a stepped hollow tube. The electrode conduit 240 is inserted and fixed in the hollow tube. The positioning pin 340 is connected to the slider 320. By operating the slider 320 to slide axially relative to the outer shell 310, the positioning pin 340 and the electrode conduit 240 can slide axially relative to the outer shell 310, thereby realizing the extension and retraction of the electrode conduit 240 relative to the outer tube 210, thereby adjusting the position of the electrode assembly 400. When the electrode conduit 240 is completely inserted into the electrode conduit cavity 212, multiple electrode conduits 240 converge and contract in a direction close to the axis of the outer tube 210. The catheter hub 330 is provided with an inflation port 301, a guidewire port 302, and a lead wire port 303. The lead wire can be led out through the lead wire port 303. The inflation port 301 is connected to the infusion line, and the inflation port 301, the injection chamber 221, and the inner cavity of the balloon 100 are connected in sequence. The balloon 100 is inflated and contracted by infusing fluid. The guidewire port 302, the guidewire chamber 222, and the end 230 are connected in sequence. The guidewire passes through the guidewire port 302, the guidewire chamber 222, and the end 230 through the through hole, and the valve shockwave balloon catheter is implanted or retrieved along the guidewire to ensure smooth implantation and retrieval of the valve shockwave balloon catheter.

[0065] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A valvular impact wave balloon catheter, characterized by, The application relates to a balloon (100), a catheter component (200), a handle (300) and an electrode assembly (400). One end of the catheter component (200) is connected with the handle (300), and the other end of the catheter component (200) is provided with the balloon (100). The balloon (100) is used for implanting into a valve ring, and the balloon (100) has a balloon wall (111) abutting against a valve along an axial direction of the valve ring. The electrode assembly (400) is arranged in the balloon (100), and a discharge port (401) of the electrode assembly (400) faces the balloon wall (111). The catheter component (200) comprises an outer tube (210) and an electrode catheter (240). The outer tube (210) is provided with an inner channel (211) and a plurality of electrode catheter channels (212), the inner channel (211) and the plurality of electrode catheter channels (212) are arranged at intervals and respectively extend along the axial direction of the outer tube (210). The electrode catheter (240) is slidably arranged in the electrode catheter channel (212), and the electrode catheter (240) extends into the balloon (100). The electrode catheter (240) is provided with an electrode accommodating cavity (241) and an elastic material cavity (242), the electrode assembly (400) is arranged in the electrode accommodating cavity (241), a plurality of the electrode assemblies (400) pass through a plurality of the electrode catheter channels (212) one by one and extend into the balloon (100), and a memory alloy is arranged in the elastic material cavity (242) so that the electrode catheter (240) has a tendency of extending to a valve lesion site. The balloon (100) comprises a first cavity balloon part (110), and the balloon wall (111) is arranged at the front part of the first cavity balloon part (110).

2. The valvular impingement balloon catheter of claim 1, wherein, From the rear end to the front end of the balloon (100), the discharge port of the electrode assembly (400) is inclined to a direction away from the axis of the catheter component (200). The balloon (100) further comprises a second cavity balloon part (120).

3. The valvular impingement balloon catheter of claim 2, wherein, The first cavity balloon part (110) and the second cavity balloon part (120) are communicated, and a valve accommodating groove (101) is formed between the balloon wall (111) and the second cavity balloon part (120). The electrode assembly (400) comprises an inner electrode (410), an outer electrode (420) and an insulation layer (430).

4. The valvular impingement balloon catheter of claim 1, wherein, The outer electrode (420) is arranged outside the inner electrode (410), and the insulation layer (430) is arranged between the inner electrode (410) and the outer electrode (420). The inner electrode (410) is connected with a power supply, the outer electrode (420) is grounded, and the discharge port (401) is formed between the inner electrode (410) and the outer electrode (420). ​ The end face of the inner electrode (410) and the end face of the insulation layer (430) are located inside the outer electrode (420), and the end face of the outer electrode (420), the end face of the inner electrode (410) and the end face of the insulation layer (430) form a step difference in sequence.

5. The valvular impingement balloon catheter of claim 1, wherein, The catheter component (200) further comprises an inner tube (220) and a tip (230); The inner tube (220) passes through the outer tube (210), and the inner tube (220) is in fluid communication with the balloon (100); The electrode assembly (400) passes through the outer tube (210) and extends into the balloon (100); The rear end of the balloon (100) is connected with the outer tube (210), the tip (230) is located at the front end of the balloon (100), and the tip (230) is connected with the inner tube (220).

6. The valvular impingement balloon catheter of claim 5, wherein, The inner tube (220) is provided with a liquid injection cavity (221) and a guide wire cavity (222), the liquid injection cavity (221) and the guide wire cavity (222) are arranged in a spaced manner and respectively extend along the axial direction of the inner tube (220); The guide wire cavity (222) is in communication with the guide wire hole of the tip (230), and the liquid injection cavity (221) is in fluid communication with the balloon (100).

7. The valvular shock balloon catheter of claim 5, wherein: The inner tube (220) passes through the inner channel (211).

8. The valvular impingement balloon catheter of claim 7, wherein, The cross section of the electrode catheter channel (212) has a circumferential limiting portion matched with the electrode catheter (240).

9. The valvular impingement balloon catheter of claim 8, wherein, The handle (300) comprises an outer shell (310), a sliding block (320) and a catheter seat (330); The sliding block (320) is slidingly connected with the outer shell (310), and the catheter seat (330) is connected with the outer shell (310); The inner tube (220) passes through the outer shell (310), and the inner tube (220) is in fluid communication with the catheter seat (330); The electrode catheter (240) is connected with the sliding block (320).

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