Balloon catheter and interventional therapy device

Abstract

The utility model relates to the technical field of medical instruments, and particularly discloses a balloon catheter and an interventional therapy device, and the balloon catheter comprises a catheter body, a head end, a balloon and a shock wave generating assembly. Wherein the shock wave generating assemblies are arranged in the balloon, and the shock wave generating assemblies are connected in series and / or in parallel. The shock wave generating assembly comprises a fixing piece, at least one first line electrode and second line electrodes corresponding to the first line electrodes, the first line electrodes are arranged at the near end of the fixing piece, the second line electrodes are arranged at the far end of the fixing piece, and the far ends of the first line electrodes and the near ends of the second line electrodes are spaced in the axial direction. According to the balloon catheter, the shock wave generator is arranged, so that the balloon catheter has excellent calcification cracking capacity, the radial space occupation is small, lesions with high stenosis rate can pass through the balloon catheter more easily in actual use, a high stenosis lesion part does not need to be opened or partially opened by using a common balloon catheter, the surgical operation is simplified, and the surgical efficiency is improved. And the treatment cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical instrument technical field more specifically, relate to a balloon catheter and interventional therapy device. BACKGROUND

[0002] In the treatment of blood vessel stenosis, balloon catheter interventional operation is more and more accepted by the majority of doctors and patients because of its small trauma, good curative effect and small side effect. However, for severe blood vessel calcification cases, conventional balloon catheter, even cutting balloon catheter, rotary grinding interventional treatment instrument and other interventional treatment instruments cannot obtain satisfactory treatment effect due to their respective limitations. For blood vessel deep calcification lesions, shock wave balloon catheter has very good treatment effect on blood vessel highly calcified tissue because it can crack deep calcified tissue without damaging blood vessel and other soft tissue, so it has very broad development prospect in interventional treatment application.

[0003] However, the radial size of the common shock wave balloon catheter is generally large, which is difficult to pass through high stenosis rate lesions in actual use, so it is necessary to use ordinary balloon catheter to open or partially open the high stenosis lesion site before use, which leads to the increase of operation complexity and treatment cost. UTILITY MODEL CONTENT

[0004] Therefore, the utility model aims at providing a balloon catheter and interventional therapy device, the structure design of the balloon catheter can effectively solve the problem that the radial size of the balloon catheter is large and difficult to pass through high stenosis rate lesion site.

[0005] In order to achieve the above purpose, the utility model provides the following technical scheme:

[0006] A balloon catheter comprises:

[0007] A tube body;

[0008] A head end located at the distal end of the tube body;

[0009] A balloon arranged between the tube body and the head end;

[0010] At least one group of shock wave generating components, the shock wave generating components are arranged in the balloon, each group of the shock wave generating components is connected in series and / or parallel, and the shock wave generating components comprise a fixing part, at least one first wire electrode and a second wire electrode corresponding to the first wire electrode respectively, the first wire electrode is arranged at the proximal end of the fixing part, the second wire electrode is arranged at the distal end of the fixing part, and the distal end of the first wire electrode and the proximal end of the second wire electrode have an interval in the axial direction.

[0011] Optionally, in the balloon catheter, the fixing member has a hollow part to expose at least part of the interval.

[0012] Optionally, in the balloon catheter, the fixing member is tubular, the hollow part is a through hole formed on the wall of the fixing member, and the interval is opposite to the through hole.

[0013] Optionally, in the balloon catheter, a plurality of through holes are formed on the wall of the fixing member, and the plurality of through holes are uniformly distributed along the circumference of the wall.

[0014] Optionally, in the balloon catheter, the distal end of the first wire electrode and the proximal end of the second wire electrode are opposite to the through hole, respectively.

[0015] Optionally, in the balloon catheter, the distal end of the first wire electrode and the proximal end of the second wire electrode are bonded, riveted or welded to the fixing member, respectively.

[0016] The two ends of the balloon are bonded, riveted or welded to the proximal end of the first wire electrode and the distal end of the second wire electrode, respectively.

[0017] Optionally, in the balloon catheter, the distal end of the first wire electrode adjacent to one end of the balloon is connected with a lead wire, and the proximal end of the second wire electrode adjacent to the other end of the balloon is also connected with a lead wire; the lead wire is arranged in the tube body and used to connect with a shock wave generator host to apply high pressure pulse excitation to the shock wave generating assembly.

[0018] Optionally, in the balloon catheter, the tube body is a single tube, the head end is provided with a guide wire hole for arranging a guide wire, and the proximal end of the guide wire hole extends to the outer circumferential surface of the head end close to one end of the balloon to form a guide wire port for the guide wire to pass through.

[0019] Optionally, in the balloon catheter, the outer wall of the balloon is provided with a cutting part for increasing the stress acting on the affected area.

[0020] Optionally, in the balloon catheter, the cutting part includes at least one of a guide wire with a circular cross section, a guide wire with a polygonal cross section, and a blade.

[0021] Optionally, in the balloon catheter, a developing part is further included, and the developing part is arranged on the cutting part or the head end.

[0022] The balloon catheter provided by the utility model comprises a tube body, a head end, a balloon and at least one set of shock wave generating components.

[0023] The balloon catheter provided by the utility model is provided with a shock wave generator, so that the balloon catheter has excellent calcification cracking capacity and can better treat vascular calcification stenosis.

[0024] Optionally, the tube body is a single tube, the head end is provided with a guide wire hole for penetrating a guide wire, and the proximal end of the guide wire hole extends to the outer peripheral surface of the end of the head end close to the balloon, so as to form a guide wire port for the guide wire to penetrate.

[0025] In order to achieve the above-mentioned purposes, the utility model also provides an interventional treatment device, which comprises the above-mentioned balloon catheter. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without paying creative labor.

[0027] Figure 1A structure schematic view of the balloon catheter of one specific embodiment of the present application;

[0028] Figure 2 For Figure 1 A partial enlarged schematic view of the present application;

[0029] Figure 3 A structure schematic view of the fixing member of one specific embodiment of the present application;

[0030] Figure 4 A development part setting position schematic view of one specific embodiment of the present application;

[0031] Figure 5 A development part setting position schematic view of another specific embodiment of the present application.

[0032] Reference signs:

[0033] 1-tube body; 2-head end; 3-balloon; 4-shock wave generating assembly; 5-hydropath; 6-catheter seat; 7-cutting part; 8-development part;

[0034] 21-wire guide hole; 22-wire guide port;

[0035] 41-fixing member; 42-first wire electrode; 43-second wire electrode; 411-hollow part. Specific embodiments

[0036] The present application discloses a balloon catheter and an interventional treatment device, so as to reduce the radial size and improve the passing rate in high stenosis rate lesions.

[0037] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0038] The balloon catheter provided by the utility model is used as an interventional medical instrument, and is suitable for but not limited to the treatment of vascular diseases. Taking the treatment of vascular diseases as an example, the working principle is roughly as follows: firstly, the balloon catheter is placed into the blood vessel of a patient and guided to a lesion position; after the balloon catheter reaches the target position, the balloon is expanded to compress or prop open the part of the blood vessel or stenosis; the balloon catheter can be advanced while the balloon is expanded. After the treatment is completed, the balloon is first reduced in size and then the balloon catheter is removed. The balloon catheter can improve the stenosis or blockage of the blood vessel by the way of expanding the balloon, so as to restore the smoothness of blood flow. The balloon catheter provided by the utility model is especially suitable for the treatment of vascular calcification by the arrangement of the shock wave generating assembly, and the special structural design of the shock wave generating assembly, the cooperation of the first wire electrode and the second wire electrode, the reduction of the radial size of the balloon catheter, and the better application of the balloon catheter to the lesion with a high stenosis rate.

[0039] In some embodiments, referring to Figures 1-3 The balloon catheter provided by the utility model comprises a tube body 1, a head end 2, a balloon 3 and at least one set of shock wave generating assemblies 4. The head end 2 is located at the distal end of the tube body 1 compared with the tube body 1, and the balloon 3 is arranged between the tube body 1 and the head end 2. It should be noted that the proximal end mentioned in the utility model refers to the end close to the doctor during the interventional treatment, and the distal end refers to the other end. The tube body 1 is arranged at the proximal end of the balloon 3, and the head end 2 is arranged at the distal end of the balloon 3. The proximal end of the tube body 1 can be connected with a hypotube 5 and a catheter seat 6 in sequence. The specific structure of the hypotube 5 and the catheter seat 6 can adopt the conventional arrangement of the balloon catheter, and will not be described here.

[0040] The shock wave generating assembly 4 is arranged in the balloon 3 and includes a fixing member 41, a first wire electrode 42 and a second wire electrode 43. It can be understood that the first wire electrode 42 and the second wire electrode 43 can be wire-shaped electrodes. The number of the first wire electrode 42 is at least one, and the second wire electrode 43 is arranged in correspondence with the first wire electrode 42, specifically, one-to-one correspondence, that is, one first wire electrode 42 and one second wire electrode 43 form a group, and each group can be referred to as an electrode group. The shock wave generating assembly 4 can specifically be arranged in one or more electrode groups. In an example, the shock wave generating assembly 4 is arranged in one electrode group, that is, the proximal end and the distal end of the fixing member 41 are respectively provided with a first wire electrode 42 and a second wire electrode 43. In another example, the shock wave generating assembly 4 is arranged in multiple electrode groups, that is, the proximal end and the distal end of the fixing member 41 are respectively provided with a plurality of first wire electrodes 42 and a plurality of second wire electrodes 43. The first wire electrode 42 is arranged at the proximal end of the fixing member 41, the second wire electrode 43 is arranged at the distal end of the fixing member 41, and the distal end of the first wire electrode 42 and the proximal end of the second wire electrode 43 are axially spaced. That is, the fixing member 41 is used to mount the first wire electrode 42 and the second wire electrode 43, and the two are arranged in axial spacing, and the specific spacing size can be set as required, and the discharge between the electrodes can be realized, of course, the spacing should be greater than zero, and the value is not specifically limited. By providing high-voltage pulse excitation to the first wire electrode 42 and the second wire electrode 43, a shock wave can be generated.

[0041] The balloon catheter includes at least one group of shock wave generating assemblies 4. In an example, the balloon catheter includes one group of shock wave generating assemblies 4, the first wire electrode 42 is arranged between the fixing member 41 and the tube body 1, and the second wire electrode 43 is arranged between the fixing member 41 and the head end 2.

[0042] In another example, the balloon catheter includes multiple groups of shock wave generating assemblies 4, and it should be noted that the multiple groups in the utility model refer to two groups and more than two groups. Each group of shock wave generating assemblies 4 is connected in series between the tube body 1 and the head end 2. Taking two groups of shock wave generating assemblies 4 as an example, the first wire electrode 42 of the first group of shock wave generating assemblies 4 is arranged between the fixing member 41 of the first group of shock wave generating assemblies 4 and the tube body 1, the second wire electrode 43 of the first group of shock wave generating assemblies 4 is connected with the first wire electrode 42 of the second group of shock wave generating assemblies 4, and the two can be an integrated structure, or a split structure connected through a conventional connection mode, or a fixing member 41 can be additionally arranged therebetween, and the second wire electrode 43 of the second group of shock wave generating assemblies 4 is arranged between the fixing member 41 of the second group of shock wave generating assemblies 4 and the tube body 1.

[0043] In another example, the balloon catheter comprises at least three groups of shock wave generating assemblies 4, wherein at least two groups of shock wave generating assemblies 4 are connected in parallel between the tube body 1 and the head end 2, and at least two groups of shock wave generating assemblies 4 are connected in series. For example, the first group of shock wave generating assemblies 4 and the second group of shock wave generating assemblies 4 are connected in series, and the second group of shock wave generating assemblies 4 and the third group of shock wave generating assemblies 4 are connected in parallel. The specific connection mode can refer to the above embodiments.

[0044] In another example, the balloon catheter comprises at least three groups of shock wave generating assemblies 4, wherein at least two groups of shock wave generating assemblies 4 are connected in parallel between the tube body 1 and the head end 2, and at least two groups of shock wave generating assemblies 4 are connected in series. For example, the first group of shock wave generating assemblies 4 and the second group of shock wave generating assemblies 4 are connected in series, and the second group of shock wave generating assemblies 4 and the third group of shock wave generating assemblies 4 are connected in parallel. The specific connection mode can refer to the above embodiments.

[0045] It should be noted that in the case of multiple groups of shock wave generating assemblies 4, the high-voltage pulse excitation applied between the first wire electrode 42 and the second wire electrode 43 of each group of shock wave generating assemblies 4 can be the same or different.

[0046] The balloon catheter provided by the utility model has excellent calcification cracking capability due to the arrangement of the shock wave generator, and can better treat vascular calcification stenosis. Specifically, the first wire electrode 42 and the second wire electrode 43 are arranged axially, and high-voltage pulse excitation can be provided to them to generate shock waves by discharging, and the shock waves can act on calcification and other lesion positions. In addition, the first wire electrode 42 and the second wire electrode 43 have small radial dimensions, so that the radial space occupation is small, the radial dimension of the balloon catheter is small, and therefore in actual use, the high-stenosis rate lesion can be passed more easily, and it is not necessary to use a general balloon catheter to first open or partially open the high-stenosis lesion site, thereby simplifying the operation and reducing the treatment cost.

[0047] In some specific examples, the cross section of the first wire electrode 42 or the second wire electrode 43 can be circular, polygonal such as rectangular, triangular, etc., and the specific shape is not limited here. The opposite ends (i.e., the discharge parts) of the first wire electrode 42 and the second wire electrode 43 have the same shape, such as arc surface, flat surface, pointed end, etc.

[0048] In some embodiments, the first wire electrode 42 and the second wire electrode 43 are both wires, i.e. wires are directly used as wire electrodes, the wires have good electrical conductivity and small radial size, so as to effectively reduce the outer diameter of the balloon catheter. In other embodiments, the first wire electrode 42 and the second wire electrode 43 can also be made of other materials. The first wire electrode 42 and the second wire electrode 43 can be made of one or more of stainless steel, platinum-iridium alloy, nickel-titanium alloy, gold, silver, copper, aluminum and other metal materials, or graphite and other non-metallic materials. Specifically, the first wire electrode 42 and the second wire electrode 43 can be made of flexible materials such as graphite, which can further enhance the flexibility of the shock wave generating assembly 4.

[0049] In some embodiments, the first wire electrode 42 and the second wire electrode 43 are respectively connected with wires, the wires are arranged in the tube body 1, and the wires are used to connect with the shock wave generating host to apply high-voltage pulse excitation to the first wire electrode 42 and the second wire electrode 43. For example, the distal end of the first wire electrode 42 and the proximal end of the second wire electrode 43 are respectively connected with wires, the wires extend along the lumen of the tube body 1 and the hypotube 5 and pass through the catheter seat 6 to be connected with the shock wave generating host. By arranging the wires, the first wire electrode 42 and the second wire electrode 43 are connected with the shock wave generating host.

[0050] In some embodiments, the distal end of the first wire electrode 42 adjacent to one end of the balloon 3 is connected with a wire, and the proximal end of the second wire electrode 43 adjacent to the other end of the balloon 3 is also connected with a wire; the wires are arranged in the tube body 1 and used to connect with the shock wave generating host to apply high-voltage pulse excitation to the shock wave generating assembly 4. For each shock wave generating assembly 4 in series, the distal end of the first wire electrode 42 adjacent to one end of the balloon 3 is connected with a wire to be connected with the shock wave generating host, and the proximal end of the second wire electrode 43 adjacent to the other end of the balloon 3 is also connected with a wire to be connected with the shock wave generating host. The first wire electrode 42 and the second wire electrode 43 between them can be connected with positive and negative electrodes, without the need to be separately connected with wires and connected with the shock wave generating host. The first wire electrode 42 and the second wire electrode 43 refer to the first wire electrode 42 and the second wire electrode 43 between the first wire electrode 42 adjacent to one end of the balloon 3 and the second wire electrode 43 adjacent to the other end of the balloon 3. As designed above, the number of wires is reduced, the radial space occupation is further reduced, and the radial size of the balloon catheter is smaller.

[0051] In some embodiments, the fixing member 41 has a hollow portion 411 to expose at least part of the interval. It can be understood that the hollow portion 411 here refers to a hollow on the fixing member 41 to expose at least part of the interval between the first linear electrode 42 and the second linear electrode 43, and the specific structure shape is not limited here. Since the shock wave generation position is between the first linear electrode 42 and the second linear electrode 43, by providing the hollow portion 411 on the fixing member 41, the shock wave emitted by the shock wave generation assembly 4 can be smoothly transmitted to the outside of the fixing member 41 to ensure the effect of the shock wave. In addition, when the hollow portion 411 exposes part of the interval, it can expose the interval in the axial direction or expose the interval in a certain range in the circumferential direction. Under the condition that the fixing member 41 is reliably connected with the first linear electrode 42 and the second linear electrode 43, the larger the range of the exposed interval, the better the corresponding generated shock wave can play a role. In other embodiments, the hollow portion 411 can not be provided under the condition that the shock wave can penetrate the fixing member 41 without causing damage to the fixing member 41.

[0052] In some embodiments, the fixing member 41 is tubular, the hollow portion 411 is a through hole provided on the wall of the fixing member 41, and the interval is opposite to the through hole. It can be understood that the interval is opposite to the through hole, which means that the projection of the through hole and the interval on the reference surface in the axial direction at least partially overlaps. For example, the projection of the interval on the reference surface is located within the projection range of the through hole on the reference surface. The fixing member 41 is tubular and has a hollow cavity. The first linear electrode 42 and the second linear electrode 43 can be respectively arranged inside the fixing member 41 and connected thereto, so that the gap between the first linear electrode 42 and the second linear electrode 43 is also located at the intermediate position inside the fixing member 41, that is, the shock wave generation position is at the central position inside the fixing member 41. Therefore, by providing the through hole opposite to the interval, the emitted shock wave can be smoothly transmitted. The shape of the through hole can be set as needed, and specifically can be a strip-shaped hole. In other embodiments, the fixing member 41 can also be a support frame, and the hollow portion of the support frame itself can be used to provide a space for the generated shock wave. In some other embodiments, the fixing member 41 can also be plate-shaped, and the first linear electrode 42 and the second linear electrode 43 can be connected to the two sides of one end surface of the fixing member 41.

[0053] In some embodiments, a plurality of through holes are provided on the wall of the fixing member 41, and the plurality of through holes are distributed in the circumferential direction of the wall. By providing a plurality of through holes in the circumferential direction, the shock wave can be transmitted in different directions from all around to better play a role. Further, the plurality of through holes are uniformly distributed in the circumferential direction of the wall to make the shock effect provided in each direction more uniform. The number of through holes can be set as needed and is not limited to four as shown in the figure.

[0054] In some embodiments, the distal end of the first wire electrode 42 and the proximal end of the second wire electrode 43 are respectively opposite to the through hole, that is, the distal end of the first wire electrode 42 extends to correspond to the through hole, and the proximal end of the second wire electrode 43 also extends to correspond to the through hole, and of course, the distal end of the first wire electrode 42 and the proximal end of the second wire electrode 43 have a gap before them, which is arranged as above, and the gap as a whole is opposite to the through hole, so that the shock wave generated can be transmitted out of the through hole to a great extent, further improving the working efficiency.

[0055] In some embodiments, the distal end of the first wire electrode 42 and the proximal end of the second wire electrode 43 are respectively bonded, riveted or fused with the fixing member 41. By using bonding, riveting or fusing, the first wire electrode 42 and the second wire electrode 43 can be reliably connected.

[0056] Further, when the fixing member 41 adopts a tubular structure, the first wire electrode 42 and the second wire electrode 43 can be respectively bonded with the fixing member 41. For example, the first wire electrode 42 and the second wire electrode 43 are respectively arranged inside the fixing member 41, and the fixing member 41 is filled with glue at both ends to respectively fix the first wire electrode 42 and the second wire electrode 43, and in particular, the cavities at both ends of the fixing member 41 are filled with glue to ensure reliable fixing of the first wire electrode 42 and the second wire electrode 43 respectively. In other embodiments, the first wire electrode 42 and the second wire electrode 43 can also be respectively fixed and connected with the fixing member 41 by riveting, fusing or other ways.

[0057] In some embodiments, the proximal end of the first wire electrode 42 and the distal end of the second wire electrode 43 are respectively bonded, riveted or fused with the balloon 3. By using bonding, riveting or fusing, the first wire electrode 42 and the second wire electrode 43 can be respectively and reliably connected with the balloon 3. Specifically, the distal end of the second wire electrode 43, the distal end of the balloon 3 and the proximal end of the tip tube are sealingly fixed to form the head end 2.

[0058] In some embodiments, the material of the fixing member 41 is a flexible material such as polyamide (nylon), polyether block polyamide (Pebax), polyimide (PI), polytetrafluoroethylene (PTFE), silicone or a hard plastic such as polyurethane (PU), polystyrene (PS), polyethylene (PE), poly-maleic anhydride ester (PMMA).

[0059] In some embodiments, the tube 1 is a single tube, the head end 2 is provided with a guide wire hole 21 for threading a guide wire, and the proximal end of the guide wire hole 21 extends to the outer peripheral surface of the head end 2 near one end of the balloon 3 to form a guide wire port 22 for threading the guide wire. The tube 1 of a conventional balloon catheter is usually a double-layer tube, i.e., comprising an inner tube and an outer tube, the main function of the inner tube is to serve as a channel for the guide wire, during the operation, the catheter is guided into the lesion site along the guide wire. In this embodiment, the guide wire hole 21 is provided at the head end 2, and the proximal end of the guide wire hole 21 extends to the outer peripheral surface of the head end 2 to form the guide wire port 22 for threading the guide wire. In this embodiment, the guide wire port 22 is moved from the tube 1 to the head end 2, i.e., the head end 2 serves as the guide wire channel, and the inner tube is cancelled, i.e., the tube 1 is a single tube, which no longer serves as a channel for the guide wire, i.e., no longer provides a channel for the guide wire, so that the radial dimension of the tube 1 can be reduced, thereby improving the softness of the front end of the balloon catheter, and the balloon catheter has better passing performance. In addition, the guide wire port 22 is moved to the head end 2, and during the treatment, the guide wire is guided to the outer surface of the balloon 3, which can be used as a scoring component, further enhancing the calcification treatment capability of the catheter.

[0060] Specifically, the proximal end of the guide wire hole 21 extends to the outer peripheral surface of the head end 2 near one end of the balloon 3, so that the guide wire hole 21 can utilize the length of the head end 2 as much as possible, and the extension of the guide wire hole 21 is more gentle, further facilitating the threading of the guide wire.

[0061] In some embodiments, the outer wall of the balloon 3 is provided with a cutting component 7 for increasing the stress acting on the lesion. It should be noted that the cutting component 7 here can be a relatively sharp component that can provide a cutting function, or a relatively soft component that can provide a scoring function. By providing the cutting component 7, the stress acting on the lesion, such as the stress acting on the calcified site, can be increased during interventional treatment, thereby enhancing the ability to open the calcified stenosis of the blood vessel. The cutting component 7 cooperates with the shock wave generating assembly 4 to make the balloon catheter have better calcification cracking treatment capability. Specifically, the cutting component 7 is installed on the outer wall of the balloon 3, and the two ends of the cutting component 7 are fixedly connected with the two ends of the balloon 3, respectively.

[0062] In some embodiments, the cutting component 7 comprises at least one of a guide wire with a circular cross-section, a guide wire with a polygonal cross-section, and a blade. The cutting component 7 adopts a guide wire, which has a simple structure and is easy to process and manufacture. The cutting component 7 adopts a blade, which is relatively sharp and can provide better calcification cracking treatment capability.

[0063] Specifically, the cutting component 7 can be made of a high polymer material, a metal or other materials.

[0064] In some embodiments, please refer to Figures 1-5The balloon catheter further comprises a developing component 8 arranged at the cutting component 7 or the head end 2. The developing component 8 is used as a developing mark of a distal working area in an interventional therapy, and its structure and principle can refer to the prior art, which will not be described here. By arranging the developing component 8, the visibility of the balloon catheter under medical imaging can be enhanced, which helps the doctor to accurately position and operate the balloon catheter, and ensures the accuracy and safety of the treatment. In the case that the balloon catheter is provided with the cutting component 7, please refer to Figure 4 and Figure 5 , the developing component 8 can be arranged at the cutting component 7 or the head end 2; in the case that the balloon catheter is not provided with the cutting component 7, please refer to Figure 5 , the developing component 8 can be arranged at the head end 2.

[0065] Based on the balloon catheter provided in the above embodiments, the utility model further provides an interventional therapy device, which comprises a shock wave generation host and any one of the balloon catheters in the above embodiments, and the shock wave generation host is electrically connected with the shock wave generation assembly 4 of the balloon catheter respectively to apply high-pressure pulse excitation to the shock wave generation assembly 4. Since the interventional therapy device adopts the balloon catheter in the above embodiments, the beneficial effects of the interventional therapy device please refer to the above embodiments.

[0066] In some embodiments, the distal end of the first wire electrode 4 and the proximal end of the second wire electrode 43 are respectively connected with wires, the wires are arranged in the tube body 1 and are electrically connected with the shock wave generation host. For example, the wires extend along the tube body 1, the inner cavity of the hypotube 5 and pass through the catheter seat 6 to be connected with the shock wave generation host.

[0067] In some embodiments, the distal end of the first wire electrode 42 adjacent to one end of the balloon 3 is connected with a wire, and the proximal end of the second wire electrode 43 adjacent to the other end of the balloon 3 is also connected with a wire; the wires are arranged in the tube body 1 and are connected with the shock wave generation host to apply high-pressure pulse excitation to the shock wave generation assembly 4.

[0068] The embodiments in the specification are described in a progressive manner, and each embodiment focuses on the difference from other embodiments. The same or similar parts of each embodiment can be referred to each other.

[0069] The above description of the disclosed embodiments enables a person skilled in the art to implement or use the utility model. Various modifications of these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the utility model. Therefore, the utility model will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A balloon catheter, characterized by, The device comprises: a tube body (1); a head end (2) at a distal end of the tube body (1); a balloon (3) between the tube body (1) and the head end (2); at least one set of shock wave generating components (4) in the balloon (3), each set of the shock wave generating components (4) being connected in series and / or in parallel, and each shock wave generating component (4) comprising a fixing member (41), at least one first wire electrode (42) at a proximal end of the fixing member (41), and a second wire electrode (43) corresponding to the first wire electrode (42) and at a distal end of the fixing member (41), and the distal end of the first wire electrode (42) and the proximal end of the second wire electrode (43) being spaced in an axial direction.

2. The balloon catheter of claim 1, wherein, The fixing member (41) has a hollow part (411) to expose at least part of the space.

3. The balloon catheter of claim 2, wherein, The fixing member (41) is tubular, the hollow part (411) is a through hole in the wall of the fixing member (41), and the space is opposite to the through hole.

4. The balloon catheter of claim 3, wherein, The wall of the fixing member (41) has a plurality of through holes, and the plurality of through holes are uniformly distributed along the circumference of the wall.

5. The balloon catheter of claim 3, wherein, The distal end of the first wire electrode (42) and the proximal end of the second wire electrode (43) are respectively opposite to the through hole.

6. The balloon catheter of claim 1, wherein, The distal end of the first wire electrode (42) and the proximal end of the second wire electrode (43) are respectively bonded, riveted or fused to the fixing member (41). The proximal end of the first wire electrode (42) and the distal end of the second wire electrode (43) are respectively bonded, riveted or fused to the balloon (3).

7. The balloon catheter of claim 1, wherein, The distal end of the first wire electrode (42) adjacent to one end of the balloon (3) is connected with a wire, and the proximal end of the second wire electrode (43) adjacent to the other end of the balloon (3) is also connected with a wire. The wires are arranged in the tube body (1) and are used to connect with a shock wave generating host to apply high pressure pulse excitation to the shock wave generating components (4).

8. The balloon catheter of any of claims 1-7, wherein, The tube body (1) is a single tube, the head end (2) has a guide wire hole (21) for arranging a guide wire, and the proximal end of the guide wire hole (21) extends to the outer circumferential surface of the head end (2) near one end of the balloon (3) to form a guide wire port (22) for the guide wire to pass through.

9. The balloon catheter of any of claims 1-7, wherein, The outer wall of the balloon (3) is provided with a cutting component (7) for increasing the stress acting on the affected area.

10. The balloon catheter of claim 9, wherein, The cutting component (7) comprises at least one of a guide wire with a circular cross section, a guide wire with a polygonal cross section, and a blade.

11. The balloon catheter of claim 9, wherein, The device further comprises a developing component (8) arranged in the cutting component (7) or the head end (2).

12. An interventional therapy device comprising a shock wave generating host and a balloon catheter according to any one of claims 1-11, the shock wave generating host being electrically connected to the shock wave generating components (4) of the balloon catheter respectively to apply high pressure pulse excitation to the shock wave generating components (4).

13. The interventional therapy device according to claim 12, characterized in that, The distal end of the first linear electrode (42) adjacent to one end of the balloon (3) is connected with a lead wire, and the proximal end of the second linear electrode (43) adjacent to the other end of the balloon (3) is also connected with a lead wire, which is arranged in the tube body (1) and electrically connected with the shock wave generating main machine.

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