CN219481256U - Ultrasonic scoring balloon dilation catheter - Google Patents

Abstract

The utility model discloses an ultrasonic scoring balloon dilation catheter, which comprises: the catheter comprises an outer tube and an inner tube, a guide wire cavity for accommodating a guide wire is arranged in the inner tube, and a medium cavity for expanding medium flow is arranged between the outer tube and the inner tube; the ultrasonic scoring saccule is a cavity structure with an ultrasonic device for generating ultrasonic waves inside, the outer wall of the saccule is provided with scoring wires which have an expanded state and a contracted state, and the saccule is connected to one end which is close to a catheter and enters a blood vessel and is communicated with a medium cavity; the liquid filling device is communicated with the medium cavity and used for conveying an expansion medium to the inner cavity of the ultrasonic scoring saccule; and the power supply device is connected with the ultrasonic device through a wire and provides electric energy. The utility model provides an ultrasonic scoring saccule dilating catheter, wherein an ultrasonic device generates ultrasonic vibration to crush calcified parts, and a scoring wire expands or releases medicines. Compared with the prior art, the ultrasonic scoring balloon dilation catheter provided by the utility model does not need to withdraw and replace other balloons again, so that the efficiency of surgical treatment is obviously improved.

Description

Ultrasonic scoring balloon dilation catheter

Technical Field

The utility model relates to the technical field of medical instruments, in particular to an ultrasonic scoring balloon dilation catheter.

Background

Coronary atherosclerosis is the pathological basis of coronary heart disease, and is also the main focus of myocardial infarction and cerebral infarction, and is caused by calcified plaque deposited in the wall of blood vessels. Vascular calcification is manifested by abnormal deposition of excessive calcium and phosphorus on the vascular wall, reduced arterial elasticity, lumen stenosis and the like, and is extremely easy to induce acute cardiovascular events, and the operation difficulty of coronary intervention treatment and the related complication risk are high.

At present, some moderate or severe calcification lesions are treated by using a shock wave balloon, and when the treatment is performed, the shock wave balloon is conveyed to a lesion part, and after the shock wave balloon is filled with an expanding medium and attached to the inner wall of a blood vessel, a power generator is started to generate shock waves so as to crush the moderate or severe calcification lesions. Furthermore, shock wave balloons are particularly useful for treatment of some conditions with eccentric calcification, eccentric nodules or deep calcification.

However, after the shock wave balloon is withdrawn, it is necessary to put another balloon again for re-inflation or drug release, etc., to finally complete the treatment. Thus, the surgery is complicated, the time taken is long, the risk of the surgery is increased, and the pain degree of the patient treatment process is increased.

Therefore, how to improve the therapeutic efficiency of the shock wave balloon is a technical problem that needs to be solved by those skilled in the art.

Disclosure of Invention

Accordingly, the present utility model is directed to an ultrasonic scoring balloon to improve the therapeutic efficiency of the shock wave balloon.

In order to achieve the above object, the present utility model provides the following technical solutions:

an ultrasonic scoring balloon dilation catheter comprising:

the catheter comprises an outer tube and an inner tube, wherein a guide wire cavity for accommodating a guide wire is formed in the inner tube, and a medium cavity channel for expanding medium flow is formed between the outer tube and the inner tube;

the ultrasonic scoring balloon is of a cavity structure for accommodating an ultrasonic device for generating ultrasonic waves, and the outer wall of the ultrasonic scoring balloon is provided with a scoring wire for being attached to the wall of a blood vessel, has an expanded state and a telescopic state, is connected to one end, which is close to the blood vessel, of the catheter, and is communicated with the medium cavity;

the liquid filling device is communicated with the medium cavity and is used for conveying an expansion medium to the inner cavity of the ultrasonic scoring balloon;

and the power supply device is connected with the ultrasonic device through a wire and is used for providing electric energy for the ultrasonic device.

Optionally, in the above ultrasonic scoring balloon dilation catheter, the ultrasonic device comprises an electrode pair consisting of a positive electrode and a negative electrode, an arc gap capable of generating plasma is arranged between the positive electrode and the negative electrode, and the plasma and the expansion medium generate ultrasonic waves through a hydro-electric effect.

Optionally, in the above ultrasonic scoring balloon dilation catheter, the positive electrode and the negative electrode are both in a ring-shaped structure, and the positive electrode and the negative electrode are both sleeved on the outer wall of the inner tube and are spaced apart along the axial direction of the inner tube to form the arc gap; or alternatively, the process may be performed,

the positive electrode and the negative electrode are of semi-annular structures, are sleeved on the outer wall of the inner tube correspondingly, and are separated at intervals along the radial direction of the inner tube to form the arc gap.

Optionally, in the above ultrasonic scoring balloon dilation catheter, the electrode pairs consisting of the positive electrode and the negative electrode are plural, and each electrode pair is distributed on the outer wall of the inner tube at intervals along the axial direction of the inner tube.

Optionally, in the above ultrasonic scoring balloon dilation catheter, the positive electrode and the negative electrode are both in spiral structures, sleeved outside the inner tube, and spaced apart to form the arc gap.

Optionally, in the ultrasonic scoring balloon dilation catheter, the score wire is in a circular spiral structure, a triangular spiral structure or a wave structure.

Optionally, in the above ultrasonic scoring balloon dilation catheter, the number of the scoring wires is plural, and each of the scoring wire intervals is arranged outside the ultrasonic scoring balloon.

Optionally, in the above ultrasonic scoring balloon dilation catheter, the outer tube and the inner tube are coaxially arranged, and a space formed by surrounding an inner wall of the outer tube and an outer wall of the inner tube is the medium channel.

Optionally, in the above ultrasonic scoring balloon dilation catheter, a guide wire cavity for the guide wire to pass through is further provided between the outer tube and the inner tube, so that the catheter has a three-cavity structure with the guide wire cavity, the medium cavity and the guide wire cavity.

Optionally, in the above ultrasonic scoring balloon dilation catheter, two ends of the ultrasonic scoring balloon are provided with developing rings, and the developing rings are located in an inner cavity of the ultrasonic scoring balloon and sleeved on an outer wall of the inner tube so as to position the ultrasonic scoring balloon.

The utility model provides an ultrasonic scoring balloon dilation catheter, wherein an inner cavity of an ultrasonic scoring balloon is provided with an ultrasonic device capable of generating ultrasonic waves, and a scoring wire is arranged on the outer wall of the ultrasonic scoring balloon. When the ultrasonic notch balloon is used, one end of the guide wire is placed into a lesion part of a blood vessel, the other end of the guide wire penetrates from the end of the catheter provided with the ultrasonic notch balloon and enters the guide wire cavity of the inner tube, the guide tube is further guided to convey the ultrasonic notch balloon to the lesion part, then the liquid filling device fills an inner cavity of the ultrasonic notch balloon with expansion media, after the ultrasonic notch balloon is attached to the blood vessel wall, the power supply device is started, the ultrasonic device generates ultrasonic vibration to impact and crush the calcified part, after the calcified part is crushed, the expansion media can be conveyed to the ultrasonic notch balloon again, so that the notch wire on the outer wall of the ultrasonic notch balloon applies pressure to the blood vessel wall to expand and release medicines or place a bracket.

Compared with the prior art, after the calcified lesion part is crushed by utilizing ultrasonic waves, the ultrasonic scoring balloon dilation catheter can be used for further dilating blood vessels or releasing medicines by utilizing the scoring wires on the outer wall, so that other balloons do not need to be withdrawn again for replacement, the efficiency of surgical treatment is obviously improved, the surgical time is shortened, and the risk of surgery is reduced.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic illustration of an ultrasonic scoring balloon expanded as a unitary exchange structure as disclosed in an embodiment of the present utility model;

FIG. 2 is a schematic cross-sectional view of a catheter structure according to an embodiment of the present utility model;

FIG. 3 is a schematic view of a ring-shaped electrode pair according to an embodiment of the present utility model;

fig. 4 is a schematic structural diagram of a semi-annular electrode pair according to an embodiment of the present utility model;

FIG. 5 is a schematic view of a spiral structure of an electrode pair according to an embodiment of the present utility model;

FIG. 6 is a schematic view of a wavy structure of a score line according to an embodiment of the present utility model;

FIG. 7 is a schematic view of a spiral structure of a score wire according to an embodiment of the present utility model;

FIG. 8 is a schematic view of a circular spiral structure according to an embodiment of the present utility model;

FIG. 9 is a schematic diagram of a triangular spiral structure according to an embodiment of the present utility model;

FIG. 10 is a schematic view of a folding wing according to an embodiment of the present utility model;

FIG. 11 is a schematic illustration of a catheter according to an embodiment of the present utility model in a dual lumen configuration;

FIG. 12 is a schematic illustration of a catheter of a three lumen configuration according to an embodiment of the present utility model;

fig. 13 is a schematic view of an ultrasonic scoring balloon dilation catheter according to an embodiment of the present utility model in a rapid exchange configuration.

Wherein 100 is a catheter, 110 is an outer tube, 120 is an inner tube, 121 is a guide wire cavity, 130 is a medium channel, 140 is a guide wire cavity, and 150 is a quick-exchange guide wire port;

200 is an ultrasonic scoring balloon; 210 is an ultrasonic device, 211 is a positive electrode, 212 is a negative electrode, 213 is an arc gap, 214 is a connecting block, and 220 is a scoring wire; 230 are folding wings;

300 is a developing ring;

400 is a power supply device;

500 is a catheter hub, 510 is a guide wire outlet, 520 is a filling port, 530 is a wire port;

600 is a push rod;

700 is a catheter stiffener.

Detailed Description

The utility model aims to provide an ultrasonic scoring balloon so as to improve the treatment efficiency of the shock wave balloon.

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

As shown in fig. 1 and 2, embodiments of the present utility model disclose an ultrasonic scoring balloon dilation catheter for treatment of intravascular calcified plaque and dilation of blood vessels, or release of drug to the vessel wall. Wherein the catheter 100 comprises an outer tube 110 and an inner tube 120, one end of a guide wire is placed into a blood vessel, and the other end of the guide wire is penetrated from the end of the catheter 100 entering the blood vessel and enters a guide wire cavity 121 of the inner tube 120, thereby guiding the catheter 100 to deliver the ultrasonic scoring balloon 200 to a lesion. And a medium channel 130 for expanding the medium flow is further provided between the outer tube 110 and the inner tube 120.

The ultrasonic scoring balloon 200 is mounted on the catheter 100 near the end of the catheter 100 that enters the blood vessel, with the lumen of the ultrasonic scoring balloon 200 communicating with the media lumen 130. The ultrasonic scoring balloon 200 has two states of contraction and expansion, and when moving in a blood vessel, the inner cavity of the ultrasonic scoring balloon 200 is not filled with the expanding medium to be in the contracted state so as to be smoothly pushed in the blood vessel. After reaching the lesion, the expanding medium is delivered to the inner cavity of the ultrasonic scoring balloon 200 through the medium channel 130 by the liquid filling device, and after the inner cavity of the ultrasonic scoring balloon 200 is filled, the ultrasonic scoring balloon 200 becomes an expanded state, and the outer wall of the ultrasonic scoring balloon 200 is attached to the vessel wall. The ultrasonic device 210 in the inner cavity of the ultrasonic scoring balloon 200 generates ultrasonic shock waves to break up calcified plaque on the vessel wall after the power supply 400 is turned on. After the calcified plaque is crushed, the inner cavity of the ultrasonic scoring balloon 200 can be filled with expansion medium again, so that the scoring wire 220 positioned on the outer wall of the ultrasonic scoring balloon 200 applies pressure on the vessel wall, the vessel is further expanded to promote blood circulation, or the medicine on the scoring wire 220 is released on the vessel wall.

As shown in fig. 3, 4 and 5, the ultrasonic device 210 includes an electrode pair consisting of a positive electrode 211 and a negative electrode 212, and an arc gap 213 for generating plasma is provided between the positive electrode 211 and the negative electrode 212, the plasma generated by the arc gap 213 and an expanding medium in the inner cavity of the ultrasonic scoring balloon 200 generate ultrasonic waves by the electrohydraulic effect, and the positive electrode 211 and the negative electrode 212 are connected to the power supply 400 by a wire.

As shown in fig. 1, 3 and 4, the positive electrode 211 and the negative electrode 212 of the electrode pair are of annular structures or of semi-annular structures, and are sleeved on the outer wall of the inner tube 120, so that the positive electrode 211 and the negative electrode 212 are quickly and conveniently mounted with the inner tube 120, and meanwhile, the mounting contact surface between the positive electrode 211 and the negative electrode 212 and the inner tube 120 is increased, and the mounting stability is improved.

When both the positive electrode 211 and the negative electrode 212 are of the ring-shaped structure, the positive electrode 211 and the negative electrode 212 are spaced apart along the axial direction of the inner tube 120 to form an arc gap 213. When the positive electrode 211 and the negative electrode 212 are both in a semi-annular structure, the positive electrode 211 and the negative electrode 212 are correspondingly sleeved on the outer wall of the inner tube 120 and are spaced apart along the radial direction of the inner tube 120 to form an arc gap 213. In order to make the positive electrode 211 and the negative electrode 212 relatively stably fixed and to secure the stability of the separation distance of the arc gap 213, a connection block 214 is installed between the positive electrode 211 and the negative electrode 212, the connection block 214 is located in the arc gap 213, and both ends are connected to the positive electrode 211 and the negative electrode 212, respectively.

In a specific embodiment, the thicknesses of the positive electrode 211 and the negative electrode 212 are 0.05mm-3mm, and the arc gap 213 is 50um-2mm, so that the influence of the size and the weight of the electrode pair on the ultrasonic scoring balloon dilation catheter provided by the embodiment is reduced, and the reliability of ultrasonic generation is ensured.

In order to further improve the impact strength to calcified lesions, the number of electrode pairs composed of the positive electrode 211 and the negative electrode 212 of a ring structure or the positive electrode 211 and the negative electrode 212 of a half ring structure is plural. The electrode pairs are spaced apart on the outer wall of the inner tube 120 along the axial direction of the inner tube 120. The number of the plurality of electrode pairs can be determined according to actual requirements, and the lines of the electrode pairs are connected in parallel so as to avoid mutual interference of the electrode pairs. The electrode pairs and the inner tube 120 can be connected by hot melting, bonding or other connection modes designed by those skilled in the art according to actual requirements.

As shown in fig. 5, the positive electrode 211 and the negative electrode 212 may be in a spiral structure, and are sleeved on the outer wall of the inner tube 120, the positive electrode 211 and the negative electrode 212 in the ultrasonic scoring balloon 200 are bare metal wires, and the positive electrode 211 and the negative electrode 212 are separated to form an arc gap 213, and after the power is turned on, ultrasonic waves are generated. And the spiral structure of the positive electrode 211 and the negative electrode 212 further improves the mounting rapidity of the electrode pair with the inner tube 120.

In addition, when the positive electrode 211 and the negative electrode 212 are both in the spiral structure, the outer walls of the positive electrode 211 and the negative electrode 212 are both sleeved with an insulating layer, the insulating layer is partially removed, the exposed metal region forms an electrode region, and the electrode region of the positive electrode 211 and the electrode region of the negative electrode 212 correspond to each other and are separated at intervals to form an arc gap 213. Meanwhile, a plurality of sets of electrode regions corresponding to each other are provided on the positive electrode 211 and the negative electrode 212 at intervals to improve the performance of the ultrasonic device 210 for generating ultrasonic waves, thereby enhancing the pulverizing ability of calcified lesions.

As shown in fig. 6 and 7, the score wire 220 mounted on the outer wall of the ultrasonic scoring balloon 200 has a wavy structure, or a spiral structure, so that the size of the score wire 220 is adapted to the size change of the ultrasonic scoring balloon 200 when the ultrasonic scoring balloon 200 is switched between the contracted state and the expanded state, thereby improving the fit of the score wire 220 to the outer wall of the ultrasonic scoring balloon 200. Meanwhile, the ultrasonic scoring balloon 200 has better bending performance, and the capability of the ultrasonic scoring balloon 200 to flexibly pass through a bending part of a blood vessel is improved. In one embodiment, the length of the score wire 220 is greater than the length of the ultrasonic scoring balloon 200 in the contracted state and is out of range of 1-100mm to ensure superior expansion of the ultrasonic scoring balloon 200.

As shown in fig. 8 and 9, in order to increase the pressure of the score wire 220 on the vessel wall, the cross section of the spiral structure of the score wire 220 is circular or triangular, and meanwhile, the material of the score wire 220 may be stainless steel, cobalt-chromium alloy, nickel-titanium alloy or other metals or alloys with better biocompatibility, or may be a polymer material with better biocompatibility such as polyamide or polyethylene. Those skilled in the art will design the material of score wire 220 according to the actual needs.

As shown in fig. 10, the score wires 220 are a plurality and are spaced apart on the outer wall of the ultrasonic scoring balloon 200. In one embodiment, the number of the score lines 220 is not less than two, and the included angles between the score lines 220 are equal, and the score lines are uniformly distributed along the outer wall of the ultrasonic scoring balloon 200, so that the pressure of the ultrasonic scoring balloon 200 on the blood vessel wall is uniformly distributed, and the blood vessel wall is uniformly expanded, or the uniformity of releasing the drug on the blood vessel wall is improved.

As shown in fig. 10, upon deflation of the ultrasonic scoring balloon 200, the outer surface of the ultrasonic scoring balloon 200 folds to form a plurality of fold wings 230. And when the ultrasonic scoring balloon 200 is contracted, the score wire 220 of the outer wall of the ultrasonic scoring balloon 200 is wrapped by the folding wings 230. Thus, when the ultrasonic scoring balloon 200 in the folded and contracted state moves in the blood vessel, the direct contact of the scoring wire 220 with surrounding soft tissues is avoided, and the interaction of the scoring wire 220 on the outer wall of the ultrasonic scoring balloon 200 with the surrounding soft tissues is prevented. And ultrasonic scoring balloon 200 is inflated and expanded, folding wings 230 are inflated and deployed exposing score wire 220 to conform score wire 220 to the vessel wall. The number of fold wings 230 is the same as the number of score lines 220 and is one-to-one.

As shown in fig. 2, the outer tube 110 and the inner tube 120 of the catheter 100 are coaxially arranged to enhance the bending capability of the catheter 100 so that the catheter 100 can smoothly pass through a bent and narrowed portion of a vascular line. Meanwhile, a space formed by surrounding the inner wall of the outer tube 110 and the outer wall of the inner tube 120 is a medium channel 130, so that the expansion medium can circulate. Alternatively, as shown in fig. 11, the dielectric channel 130 is a single channel disposed in the inner cavity of the outer tube 110, and a wire for connecting the electrode pair and the power supply device 400 is disposed in the dielectric channel 130.

As shown in fig. 12, a guide wire lumen 140 is added to the guide wire lumen 121 and the medium channel 130, and the guide wire lumen 140 is used for accommodating a guide wire of an electrode pair and passes through the catheter 100. The three independent channels isolate the lead wire, the expansion medium and the guide wire, so that mutual interference is avoided, and the reliability of the ultrasonic scoring balloon dilation catheter provided by the embodiment is improved.

As shown in fig. 1 and 13, the two ends of the ultrasonic scoring balloon 200 are provided with developing rings 300, and the developing rings 300 are positioned in the inner cavity of the ultrasonic scoring balloon 200 and sleeved on the outer wall of the inner tube 120 to position the ultrasonic scoring balloon 200 in the blood vessel. The development rings 300 at both ends of the ultrasonic scoring balloon 200 may mark the effective working area of the ultrasonic scoring balloon 200 to adjust the effective working area of the ultrasonic scoring balloon 200. The developing ring 300 is made of platinum alloy or other materials which are not transparent to X-rays according to actual requirements by the technology in the field, so as to realize the positioning function of the developing ring 300.

The ultrasonic scoring balloon dilation catheter provided by this embodiment is further divided into a whole exchange type and a rapid exchange type. As shown in fig. 1, the ultrasonic scoring balloon dilation catheter provided in this embodiment is an integral exchange type, and a catheter seat 500 is connected to the end of the catheter 100, which is far away from the entering blood vessel, so as to facilitate pushing of the catheter 100, and facilitate the operation of the ultrasonic scoring balloon dilation catheter provided in this embodiment by a user. At this time, the catheter holder 500 is further provided with a guide wire outlet 510, a filling port 520 and a wire port 530, the guide wire outlet 510 is communicated with the guide wire cavity 121 for guiding the threading of the guide wire, the filling port 520 is communicated with the medium cavity 130 for connecting with the liquid filling device for extending the medium in and out, and the wire port 530 is used for leading out the wire for connecting with the power supply device 400. And to enhance the ease and compatibility of the ultrasound scoring balloon dilation catheter connection provided in this example, the guide wire outlet 510, filling port 520, and guidewire port 530 are all luer connectors.

Further, in order to enhance the transmission of force between the catheter hub 500 and the catheter 100, a catheter reinforcement 700 is provided between the catheter hub 500 and the catheter 100, and the catheter reinforcement 700 is fitted over the catheter 100 and connected to the catheter hub 500.

As shown in fig. 13, when the ultrasonic scoring balloon dilation catheter provided in this embodiment is a rapid exchange type, a rapid exchange guide wire port 150 is provided on the outer wall of the catheter 100, and the rapid exchange guide wire port 150 is communicated with the guide wire cavity 121 for guiding the threading out of the guide wire. At this time, a pushing rod 600 is further provided, the pushing rod 600 is located between the catheter 100 and the catheter holder 500, a cavity is provided inside the pushing rod 600, and the cavity of the pushing rod 600 is communicated with the inner cavity of the catheter 100. And the catheter seat 500 is only provided with the filling port 520 and the wire port 530, and is communicated with the inner cavity of the catheter 100 through the cavity of the pushing rod 600. The catheter stiffener 700 is then sleeved outside the push rod 600.

It should be noted that, in the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described as different from other embodiments, and identical and similar parts between the embodiments are all enough to be referred to each other.

As used in this application and in the claims, the terms "a," "an," "the," and/or "the" are not specific to the singular, but may include the plural, unless the context clearly dictates otherwise. In general, the terms "comprises" and "comprising" merely indicate that the steps and elements are explicitly identified, and they do not constitute an exclusive list, as other steps or elements may be included in a method or apparatus. The inclusion of an element defined by the phrase "comprising one … …" does not exclude the presence of additional identical elements in a process, method, article, or apparatus that comprises an element.

Wherein, in the description of the embodiments of the present application, "/" means or is meant unless otherwise indicated, for example, a/B may represent a or B; "and/or" herein is merely an association relationship describing an association object, and means that three relationships may exist, for example, a and/or B may mean: a exists alone, A and B exist together, and B exists alone. In addition, in the description of the embodiments of the present application, "plurality" means two or more than two.

The terms "first" and "second" are used below for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature.

The principles and embodiments of the present utility model have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the core concepts of the utility model. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the utility model can be made without departing from the principles of the utility model and these modifications and adaptations are intended to be within the scope of the utility model as defined in the following claims.

Claims (10)

1. An ultrasonic scoring balloon dilation catheter, comprising:

catheter (100) comprising an outer tube (110) and an inner tube (120), wherein a guide wire cavity (121) for accommodating a guide wire is formed inside the inner tube (120), and a medium channel (130) for expanding medium flow is arranged between the outer tube (110) and the inner tube (120);

an ultrasonic scoring balloon (200) which is a cavity structure with an ultrasonic device (210) for generating ultrasonic waves inside, wherein the outer wall of the ultrasonic scoring balloon (200) is provided with a scoring wire (220) for being attached to the wall of a blood vessel, and the ultrasonic scoring balloon (200) has an expanded state and a contracted state, is connected to one end which is close to the blood vessel entering the catheter (100) and is communicated with the medium cavity (130);

the liquid filling device is communicated with the medium cavity channel (130) and is used for conveying an expansion medium to the inner cavity of the ultrasonic scoring balloon (200);

and the power supply device is connected to the ultrasonic device (210) through a wire and is used for providing electric energy for the ultrasonic device (210).

2. The ultrasonic scoring balloon dilation catheter of claim 1, wherein the ultrasonic device (210) comprises an electrode pair consisting of a positive electrode (211) and a negative electrode (212), the positive electrode (211) and the negative electrode (212) having an arc gap (213) therebetween that produces a plasma that produces ultrasonic waves with the expansion medium by a hydro-electric effect.

3. The ultrasonic scoring balloon dilation catheter of claim 2, wherein the positive electrode (211) and the negative electrode (212) are both of annular configuration, the positive electrode (211) and the negative electrode (212) are both sleeved on an outer wall of the inner tube (120) and are spaced apart along an axial direction of the inner tube (120) to form the arc gap (213); or alternatively, the process may be performed,

the positive electrode (211) and the negative electrode (212) are of semi-annular structures, are sleeved on the outer wall of the inner tube (120) correspondingly, and are spaced apart along the radial direction of the inner tube (120) to form the arc gap (213).

4. The ultrasonic scoring balloon dilation catheter of claim 3, wherein a plurality of electrode pairs are comprised of the positive electrode (211) and the negative electrode (212), and each of the electrode pairs is spaced apart along an axial direction of the inner tube (120) on an outer wall of the inner tube (120).

5. The ultrasonic scoring balloon dilation catheter of claim 2, wherein the positive electrode (211) and the negative electrode (212) are each of a spiral configuration, sleeved outside the inner tube (120), and the positive electrode (211) and the negative electrode (212) are spaced apart to form the arc gap (213).

6. The ultrasonic scoring balloon dilation catheter of claim 1 wherein the score wire (220) is a circular helical structure, a triangular helical structure, or a wavy structure.

7. The ultrasonic scoring balloon dilation catheter of claim 6 wherein the number of scoring wires (220) is a plurality, each of the scoring wires (220) being spaced outboard of the ultrasonic scoring balloon (200).

8. The ultrasonic scoring balloon dilation catheter of claim 1, wherein the outer tube (110) and the inner tube (120) are coaxially arranged, and a space formed by an inner wall of the outer tube (110) and an outer wall of the inner tube (120) in surrounding relation is the media lumen (130).

9. The ultrasonic scoring balloon dilation catheter of claim 1, wherein a guidewire lumen (140) for passage of the guidewire is further disposed between the outer tube (110) and the inner tube (120) such that the catheter (100) is a three lumen structure having the guidewire lumen (121), the medium lumen (130), and the guidewire lumen (140).

10. The ultrasonic scoring balloon dilation catheter of any one of claims 1-9, wherein developing rings (300) are arranged at two ends of the ultrasonic scoring balloon (200), and the developing rings (300) are positioned in an inner cavity of the ultrasonic scoring balloon (200) and sleeved on an outer wall of the inner tube (120) so as to position the ultrasonic scoring balloon (200).