Shock wave balloon catheter device, shock wave balloon catheter system and control method thereof

Abstract

The present application discloses a shock wave balloon catheter device, a shock wave balloon catheter system, and a control method thereof. The shock wave balloon catheter device comprises: a tube having opposing proximal and distal ends, at least a section of the tube proximal to the distal end being a working section, the tube providing at least a guidewire lumen and an infusion lumen; a balloon body secured to the periphery of the working section and communicating with the infusion lumen; and an electrode pair positioned within the balloon body and adjacent to the working section. When the electrode pair discharges, it deforms the working section to propel the guidewire within the guidewire lumen axially. The shock wave destroys vascular occlusions and drives the guidewire directly to act on the vascular occlusion, thereby improving work efficiency.

Description

Technical Field

[0001] The present application relates to the field of medical devices, and in particular to a shock wave balloon catheter device, a shock wave balloon catheter system and a control method thereof. Background Art

[0002] During angioplasty, a balloon is used to dilate a vascular lesion to restore normal blood flow. During the procedure, a catheter, typically carrying the balloon, is advanced over a guidewire into the vessel until the balloon is aligned with the lesion. The balloon is then pressurized to destroy the calcified plaque at the lesion.

[0003] In recent years, targeting intravascular calcified plaque, particularly severely calcified plaque, U.S. Patent No. 2009 / 0312768 discloses a balloon catheter system. This balloon catheter system incorporates a shock wave generator within the balloon. The shock wave generator can take the form of an electrode pair coupled to a high-voltage source at the proximal end of the catheter. When the balloon is placed near a calcified area of a vein or artery and high-voltage pulses are applied across the electrodes, shock waves are generated. These shock waves propagate through the fluid and strike the balloon wall and the calcified area. Repeated pulses can destroy the calcified plaque without damaging surrounding soft tissue.

[0004] Building on the aforementioned patent, Chinese invention patent application CN112367934A discloses a balloon system for shock wave therapy of occluded vessels in the body. This balloon system, with a relatively thin profile, can open blocked sections of blood vessels, ureters, and other structures, restoring normal flow. However, its effectiveness relies on the expansion of the distal balloon to contact the vascular occlusion. Most of the shock wave is applied to the periphery of the balloon, rather than the distal end, resulting in low efficiency. Summary of the Invention

[0005] Based on this, the present application provides a shock wave balloon device, which destroys vascular occlusions by shock waves and drives the guide wire to directly act on the vascular occlusions, thereby improving work efficiency.

[0006] A shock wave balloon catheter device, comprising:

[0007] A tubular body having a proximal end and a distal end opposite to each other, wherein at least a section of the tubular body adjacent to the distal end is a working section, and the tubular body at least provides a guidewire lumen and an infusion lumen;

[0008] a balloon body, fixed to the periphery of the working section and communicated with the perfusion cavity;

[0009] The electrode pair is located in the balloon body and is arranged adjacent to the working section. When the electrode pair discharges, it drives the working section to deform so as to promote the axial movement of the guidewire in the guidewire cavity.

[0010] Several optional methods are also provided below, but they are not intended to be additional limitations on the above-mentioned overall solution. They are merely further supplements or optimizations. Under the premise that there are no technical or logical contradictions, each optional method can be combined separately for the above-mentioned overall solution, or multiple optional methods can be combined.

[0011] Optionally, the tube body includes:

[0012] A first tube, wherein the lumen is the guidewire lumen, the balloon body is located outside the distal end of the first tube, and at least one section of the first tube inside the balloon body is the working section, and the working section is made of a deformable material;

[0013] a second tube, located outside the first tube and connected to the proximal end of the balloon body; the perfusion cavity includes an injection cavity and a reflux cavity; a radial gap between the first tube and the second tube serves as the reflux cavity;

[0014] The third tube member is arranged side by side with the first tube member, the lumen of the third tube member serves as the injection lumen, and the distal end of the third tube member is opened at a position adjacent to the distal end in the balloon body.

[0015] Optionally, the tube body further includes:

[0016] a fourth tube, through which a wire connected to the positive electrode of the electrode pair extends toward the proximal end;

[0017] a fifth tube, through which a wire connected to the negative electrode of the electrode pair extends toward the proximal end;

[0018] The fourth pipe member and the fifth pipe member are both located inside the second pipe member and arranged side by side with the first pipe member.

[0019] Optionally, the third pipe member, the fourth pipe member and the fifth pipe member are arranged around the first pipe member and fixed on the outer wall of the first pipe member.

[0020] Optionally, the tube body is a multi-lumen tube, and the interior of the tube body includes at least the following parallel arrangements:

[0021] The guidewire cavity has a distal end that is open and extends beyond the distal end of the balloon body;

[0022] The injection cavity, the distal end of which extends and opens to the distal end of the balloon body;

[0023] The reflux cavity, the distal end of which is open to the proximal end of the balloon body, and the reflux cavity and the injection cavity constitute the perfusion cavity;

[0024] There are two cable cavities, and the wires connected to the positive electrode and the negative electrode of the electrode pair extend to the proximal end of the tube body through the respective corresponding cable cavities.

[0025] Optionally, the working section is a continuously extending section or a plurality of sections arranged at intervals, and the material of the working section is at least one of nylon, pebax, TPU, PVC, silicone, and PU.

[0026] Optionally, the electrode pair is one or more pairs, and in the same electrode pair, the negative electrode is closer to the distal end of the balloon body than the positive electrode.

[0027] Optionally, the distance between the positive and negative electrodes of the same electrode pair is 0.5 to 5 mm, and at least one electrode pair is corresponding to each working section. The negative electrode of the same electrode pair is located on the working section, and in the axial direction of the tube body, the distance between the positive electrode and the nearest working section is less than 5 mm.

[0028] The present application also provides a shock wave balloon catheter system, comprising the shock wave balloon catheter device and a guidewire located in the guidewire cavity.

[0029] The present application also provides a method for controlling a shock wave balloon catheter system, comprising:

[0030] adjusting the axial relative position of the shock wave balloon catheter device and the guide wire so that the distal end of the guide wire extends out of the shock wave balloon catheter device;

[0031] When the balloon is inflated, the electrode pair is driven to discharge, causing the guide wire to move relative to the balloon along the axial direction.

[0032] The shock wave balloon catheter device provided in the present application has a deformable working section arranged in the tube body. When the electrode pair discharges, the shock wave is emitted to drive the working section to deform. The deformation of the working section squeezes the guidewire in the guidewire cavity and pushes the guidewire to move along its axial direction toward the distal end of the balloon body. The end of the guidewire forms repeated instantaneous impacts on the vascular occlusion. The shock wave itself will also cause damage to the vascular occlusion. At the same time, the multiple impacts of the guidewire on the vascular obstruction can open the vascular occlusion. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a schematic diagram of a first embodiment of the shock wave balloon catheter device of the present application (the fourth and fifth tubes are omitted in the figure);

[0034] Figure 2 This is a schematic cross-sectional view of the tube body in the first embodiment of the shock wave balloon catheter device of the present application;

[0035] Figure 3 This is a schematic diagram of a second embodiment of the shock wave balloon catheter device of the present application (the cable cavity is omitted in the figure);

[0036] Figure 4 This is a schematic cross-sectional view of the tube body in the second embodiment of the shock wave balloon catheter device of the present application.

[0037] In the figure: 1. Balloon body; 2. Guide wire; 3. First tube; 4. Second tube; 5. Third tube; 6. Positive electrode; 7. Negative electrode; 8. Working section; 9. Fourth tube; 10. Fifth tube; 11. Reflux chamber; 12. Injection chamber; 13. Guide wire chamber; 14. Injection chamber; 15. Reflux chamber; 16. Tube body; 17. Cable chamber. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0039] In order to better describe and illustrate the embodiments of the present application, reference may be made to one or more drawings, but the additional details or examples used to describe the drawings should not be considered as limiting the scope of the invention of the present application, any of the currently described embodiments or preferred methods.

[0040] It should be noted that when a component is referred to as being "connected" to another component, it may be directly connected to the other component or there may be an intermediate component. When a component is referred to as being "disposed on" another component, it may be directly disposed on the other component or there may be an intermediate component.

[0041] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application pertains. The terms used herein in the specification of this application are for the purpose of describing specific embodiments only and are not intended to limit this application.

[0042] See also Figure 1 、 Figure 3 As shown, a shock wave balloon catheter device comprises:

[0043] The tubular body 16 has a proximal end and a distal end opposite to each other, at least a section of the tubular body 16 adjacent to the distal end is a working section 8, and the tubular body 16 provides at least a guidewire lumen 13 and an infusion lumen;

[0044] The balloon body 1 is fixed to the periphery of the working section 8 and communicates with the perfusion cavity;

[0045] The electrode pair is located in the balloon body 1 and is arranged adjacent to the working section 8. When the electrode pair discharges, it drives the working section 8 to deform to promote the axial movement of the guidewire 2 in the guidewire cavity 13.

[0046] The shock wave balloon catheter device provided in the present application has a deformable working section 8 provided in the tube body 16. When the electrode pair discharges, the shock wave is emitted to drive the working section 8 to deform. The deformation of the working section 8 squeezes the guidewire 2 in the guidewire cavity 13 and pushes the guidewire 2 to move along its axial direction toward the distal end of the balloon body 1. When the electrode pair discharges at a predetermined frequency, the guidewire 2 will also move along its axial direction toward the distal end of the balloon body 1 at a certain frequency. The distal end of the guidewire 2 directly acts on the vascular occlusion. The periodic axial movement of the guidewire 2 will form repeated instantaneous impacts on the vascular occlusion (including part or all of the substances blocking the blood vessel, such as thrombus or plaque), and the impact force is applied to the vascular occlusion. The repeated impacts of the guidewire on the vascular occlusion combined with the damage to the vascular occlusion by the shock wave can open the vascular occlusion.

[0047] The distal end of the guide wire 2 directly acts on the vascular occlusion, thereby improving the efficiency of destroying the vascular occlusion and enabling the balloon 1 to pass through the stenotic area of the blood vessel more easily.

[0048] The perfusion cavity is used to perfuse fluid into the balloon body 1. The fluid not only inflates the balloon, but also absorbs the heat generated by the discharge of the electrode pair, thereby preventing the discharge of the electrode pair from having adverse effects on biological tissues.

[0049] One to two developing rings may be provided inside the balloon body 1 to mark the position and inflation status of the balloon.

[0050] See also Figure 1 、 Figure 2 As shown, the tube body 16 includes:

[0051] The first tube 3 has a lumen serving as a guidewire lumen 13. The balloon body 1 is located outside the distal end of the first tube 3. At least one section of the first tube 3 within the balloon body 1 is a working section 8, which is made of a deformable material.

[0052] The second tube 4 is located outside the first tube 3 and is connected to the proximal end of the balloon body 1. The perfusion cavity includes an injection cavity 12 and a reflux cavity 11. The radial gap between the first tube 3 and the second tube 4 serves as the reflux cavity 11.

[0053] The third tube member 5 is arranged side by side with the first tube member 3 . The lumen of the third tube member 5 serves as the injection cavity 12 , and the distal end of the third tube member 5 is open to a position adjacent to the distal end in the balloon body 1 .

[0054] The perfusion chamber includes an injection chamber 12 and a reflux chamber 11. The injection chamber 12 and the reflux chamber 11 form a fluid circulation loop. The fluid enters the balloon body 1 through the injection chamber 12 and flows out of the balloon body 1 through the reflux chamber 11. The fluid circulates in the balloon body 1, inflating the balloon body 1 and absorbing the heat generated by the discharge of the electrode.

[0055] The injection cavity 12 is close to the distal end of the balloon body 1 , and the reflux cavity 11 is close to the proximal end of the balloon body 1 , so as to ensure that there is sufficient fluid in the balloon body 1 .

[0056] A section of the first pipe fitting 3 is a working section. The working section can be subjected to special heat treatment or chemical treatment on the one-piece molded pipe fitting to become a deformable working section. Pipe fittings of different materials can also be plugged in and fixed in sequence along the axial direction by plugging. It is expected that the pipe fitting used as the working section will be made of a deformable material.

[0057] See also Figure 1 、 Figure 2 As shown, the tube body 16 also includes:

[0058] A fourth tube 9, through which a wire connected to the positive electrode 6 of the electrode pair extends toward the proximal end;

[0059] A fifth tube 10, through which a wire connected to the negative electrode 7 of the electrode pair extends toward the proximal end;

[0060] The fourth pipe member 9 and the fifth pipe member 10 are both located in the second pipe member 4 and arranged side by side with the first pipe member 3 .

[0061] The fourth tube 9 and the fifth tube 10 are used for routing the positive electrode 6 and the negative electrode 7 wires respectively to ensure the safety of the circuit. When the fourth tube 9 and the fifth tube 10 are not available, the wires can also be directly fixed to the outer periphery of the first tube 3, and grooves for accommodating the wires are opened on the outer periphery of the first tube 3.

[0062] See also Figure 1 、 Figure 2 As shown, the third pipe 5 , the fourth pipe 9 and the fifth pipe 10 are arranged around the first pipe 3 and fixed on the outer wall of the first pipe 3 .

[0063] See also Figure 3 、 Figure 4 As shown, the tube body 16 is a multi-lumen tube, and the interior of the tube body 16 includes at least the following parallel arrangements:

[0064] a guidewire lumen 13, the distal end of the guidewire lumen 13 being open and extending beyond the distal end of the balloon body 1;

[0065] an injection cavity 14, the distal end of the injection cavity 14 extending and opening to the distal end of the balloon body 1;

[0066] A reflux chamber 15, the distal end of which is open to the proximal end of the balloon body 1, and the reflux chamber 15 and the injection chamber 14 constitute the perfusion chamber;

[0067] The two cable cavities 17 , through which the wires connected to the positive electrode 6 and the negative electrode 7 of the electrode pair extend to the proximal end of the tube body 16 .

[0068] The injection cavity 14 is close to the distal end of the balloon body 1 , and the reflux cavity 15 is close to the proximal end of the balloon body 1 , so as to ensure that the balloon body 1 is full of fluid.

[0069] When a multi-lumen tube is used as the tube body, at least one section of the tube body is made of a deformable material. The working section can be subjected to special heat treatment or chemical treatment on the one-piece molded tube fitting to become a deformable working section. Tube fittings of different materials can also be plugged in and fixed in sequence along the axial direction by plugging. It is expected that the tube fitting used as the working section is made of a deformable material.

[0070] The working section 8 is a continuously extending section or a plurality of sections arranged at intervals. The material of the working section 8 is at least one of nylon, pebax, TPU, PVC, and silicone.

[0071] The entire tube body 16 needs to have a stable structure to support the balloon body 1. The working section 8 in the tube body 16 is made of a deformable material. The deformation of the tube body 16 needs to have an appropriate range. When the electrode pair is not discharging, the tube body 16 can maintain the radial and axial structure and size. When the electrode pair is discharging, the working section 8 of the tube body 16 can undergo appropriate deformation to clamp the guide wire 2 and achieve axial push of the guide wire 2.

[0072] The material of the working section 8 needs to have a certain degree of flexibility, which allows it to deform when the electrodes are discharging, while maintaining a relatively fixed shape when the electrodes are not discharging. The elastic modulus of the material of the working section should be ≤1.42GPa.

[0073] See also Figure 1 、 Figure 3 As shown, the working section 8 is a continuously extending section. When the working section 8 is a plurality of sections arranged at intervals, each working section 8 is correspondingly provided with an electrode pair and a matching wire, and the perfusion cavities in the tube body 16 can share a set.

[0074] Along the axial direction of the tube body 16, the length of each working section 8 ( Figure 1 and Figure 3 (middle) is 4 to 20 mm.

[0075] See also Figure 1 、 Figure 3 As shown, the electrode pair is one or more pairs, and in the same electrode pair, the negative electrode 7 is closer to the distal end of the balloon body 1 than the positive electrode 6.

[0076] See also Figure 1 、 Figure 3 As shown, the electrode pair is a pair, and in the same pair of electrodes, the negative electrode 7 is closer to the distal end of the balloon body 1 than the positive electrode 6, that is, when the same pair of electrodes is discharged, the deformation of the working section 8 is ensured to be directional, which can push the guide wire 2 to apply force toward the occlusion in the blood vessel.

[0077] The electrode itself is made of conductive materials, such as metals and alloys. The conductive materials can be selected from metals such as gold, silver, copper, aluminum, platinum, magnesium, etc., and alloys formed by two or more metals through various processes.

[0078] The structure of the electrodes is not limited. For example, the positive electrode 6 is a coil, a dot, or a welded semicircular ring with 1 to 5 turns, and the negative electrode 7 is a dot, a coil, or a welded semicircular ring.

[0079] The wires connecting the electrodes are wrapped in an insulating layer. Both the positive electrode 6 and the negative electrode 7 have exposed areas for discharge. The surface area of the exposed area of the negative electrode 7 is 1 / 3 larger than that of the exposed area of the positive electrode 6. The discharge voltage of the positive electrode 6 and the negative electrode 7 is 100-10,000 volts. The non-exposed areas of the positive electrode 6 and the negative electrode 7 are coated with insulating glue to maintain insulation.

[0080] The distance between the positive and negative electrodes of the same electrode pair ( Figure 1 and Figure 3 D1) is 0.5 to 5 mm. Preferably, the distance between the positive and negative electrodes of the same electrode pair is 1 to 3 mm. More preferably, the distance between the positive and negative electrodes of the same electrode pair is 1 to 2 mm.

[0081] Each working section 8 is provided with at least one pair of electrodes. The negative electrode 7 of the same electrode pair is located on the working section 8. In the axial direction of the tube body 16, the distance between the positive electrode 6 and the nearest working section 8 is less than 5 mm.

[0082] The distance between different electrode pairs along the axial direction of the tube body 16 is 0.5 to 20 cm. Too close distances between different electrode pairs may cause mutual influence during the discharge process. Each working section 8 can be provided with 1 to 5 pairs of electrodes.

[0083] The negative electrode 7 in each electrode pair is located on the working section 8, and the positive electrode 6 is not located on the working section 8, but is located at a position adjacent to the working section 8. When the electrode pair discharges and emits a shock wave, the instantaneous current comes out of the positive electrode 6 and gives the negative electrode 7 an instantaneous impact force. The negative electrode 7 is fixed on the working section 8. The working section 8 is deformed under the action of the negative electrode 7 and clamps the guide wire 2 to move toward the distal end of the balloon body 1.

[0084] Each working section 8 is provided with 1 to 5 electrode pairs, and each electrode pair can be arranged around the working section 8 .

[0085] The positive electrode 6 and the negative electrode 7 of each pair of electrodes can be arranged in parallel or in series according to actual needs, as long as the effect on the working section 8 during discharge of the electrode pair can be ensured.

[0086] By setting up multiple working sections 8, each working section 8 is set with multiple electrode pairs. When the electrode pairs discharge, the force acting on the guide wire 2 generated by the deformation of the working section 8 is superimposed in the axial direction of the tube body 16, which is more conducive to pushing the guide wire 2 to move toward the distal end of the balloon body 1.

[0087] The distance between the electrode and the nearest working section 8 cannot be too far. If it is too far, the working section 8 may not be deformed well when the electrode pair discharges, thereby losing the function of pushing the guide wire 2.

[0088] The present application also provides a shock wave balloon catheter system, comprising the shock wave balloon catheter device and a guidewire 2 located in the guidewire cavity 13 .

[0089] The present application also provides a method for controlling a shock wave balloon catheter system, comprising:

[0090] Adjusting the axial relative position of the shock wave balloon catheter device and the guide wire 2 so that the distal end of the guide wire 2 extends out of the shock wave balloon catheter device;

[0091] When the balloon 1 is inflated, the electrode pair is driven to discharge, causing the guide wire 2 to move relative to the balloon 1 along the axial direction.

[0092] When the distal end of the guide wire 2 is extended out of the shock wave balloon catheter device, the length of the guide wire 2 extending out of the distal end of the balloon body 1 in the axial direction of the tube body 16 ( Figure 1 and Figure 3 Preferably, the length of the guide wire 2 extending from the distal end of the balloon body 1 is 1 to 3 mm.

[0093] If the length of the guide wire 2 extending from the distal end of the balloon body 1 is too long, and since the guide wire 2 itself is also flexible, the impact force generated by the discharge of the electrode may be absorbed by the guide wire 2 itself and cannot be efficiently transmitted to the vascular occlusion; if the length of the guide wire 2 extending from the distal end of the balloon body 1 is too short, the axial movement range of the guide wire 2 is limited, and it cannot effectively impact the vascular occlusion.

[0094] During the use of the shock wave balloon catheter system, the guide wire 2 extends to an appropriate length from the distal end of the balloon body 1, and the guide wire 2 directly contacts the vascular occlusion. When the energized electrode discharges and emits a shock wave, the instantaneous current flows out from the positive electrode 6 and gives the negative electrode 7 an instantaneous impact force. The negative electrode 7 is fixed on the deformable working section 8, so that the tube body 16 clamps the guide wire 2 while carrying the guide wire 2 to the distal end of the balloon body 1. The guide wire 2 applies the impact force to the vascular occlusion, impacting the blood vessel multiple times. At the same time, the shock wave will also cause damage to the vascular occlusion. The superposition of the two effects can open the vascular occlusion.

[0095] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0096] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art could make various modifications and improvements without departing from the spirit of the present application, all of which fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A shock wave balloon catheter device, characterized in that: include: A tubular body having a proximal end and a distal end opposite to each other, wherein at least a section of the tubular body adjacent to the distal end is a working section, and the tubular body at least provides a guidewire lumen and an infusion lumen; a balloon body, fixed to the periphery of the working section and communicated with the perfusion cavity; The electrode pair is located in the balloon body and is arranged adjacent to the working section. When the electrode pair discharges, it emits a shock wave to drive the working section to deform, thereby promoting the axial movement of the guidewire in the guidewire cavity.

2. The shock wave balloon catheter device according to claim 1, wherein: The tube body comprises: A first tube, wherein the lumen is the guidewire lumen, the balloon body is located outside the distal end of the first tube, and at least one section of the first tube inside the balloon body is the working section, and the working section is made of a deformable material; a second tube, located outside the first tube and connected to the proximal end of the balloon body; the perfusion cavity includes an injection cavity and a reflux cavity; a radial gap between the first tube and the second tube serves as the reflux cavity; The third tube member is arranged side by side with the first tube member, the lumen of the third tube member serves as the injection lumen, and the distal end of the third tube member is opened at a position adjacent to the distal end in the balloon body.

3. The shock wave balloon catheter device according to claim 2, wherein: The tube body also includes: a fourth tube, through which a wire connected to the positive electrode of the electrode pair extends toward the proximal end; a fifth tube, through which a wire connected to the negative electrode of the electrode pair extends toward the proximal end; The fourth pipe member and the fifth pipe member are both located inside the second pipe member and arranged side by side with the first pipe member.

4. The shock wave balloon catheter device according to claim 3, wherein: The third pipe member, the fourth pipe member and the fifth pipe member are arranged around the first pipe member and fixed on the outer wall of the first pipe member.

5. The shock wave balloon catheter device according to claim 1, wherein: The tube body is a multi-lumen tube, and the interior of the tube body includes at least the following parallel arrangements: The guidewire cavity has a distal end that is open and extends beyond the distal end of the balloon body; an injection cavity, the distal end of which extends and opens to a distal portion of the balloon body; A reflux cavity, the distal end of which is open to the proximal end of the balloon body, and the reflux cavity and the injection cavity constitute the perfusion cavity; There are two cable cavities, and the wires connected to the positive electrode and the negative electrode of the electrode pair extend to the proximal end of the tube body through the respective corresponding cable cavities.

6. The shock wave balloon catheter device according to any one of claims 1 to 5, characterized in that: The working section is a continuously extending section or a plurality of sections arranged at intervals, and the material of the working section is at least one of nylon, pebax, TPU, PVC, silicone, and PU.

7. The shock wave balloon catheter device according to any one of claims 1 to 5, characterized in that: The electrode pair is one or more pairs, and in the same electrode pair, the negative electrode is closer to the distal end of the balloon body than the positive electrode.

8. The shock wave balloon catheter device according to claim 7, wherein: The distance between the positive and negative electrodes of the same electrode pair is 0.5~5mm. At least one electrode pair is set corresponding to each working section. The negative electrode of the same electrode pair is located on the working section. In the axial direction of the tube body, the distance between the positive electrode and the nearest working section is less than 5mm.

9. Shock wave balloon catheter system, characterized in that, The invention comprises the shock wave balloon catheter device according to any one of claims 1 to 8 and a guidewire located in the guidewire cavity.

10. The control method of the shock wave balloon catheter system according to claim 9, characterized in that: include: adjusting the axial relative position of the shock wave balloon catheter device and the guide wire so that the distal end of the guide wire extends out of the shock wave balloon catheter device; When the balloon is inflated, the electrode pair is driven to discharge, causing the guide wire to move relative to the balloon along the axial direction.

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