WO2024021604A1

WO2024021604A1 - Shock wave balloon catheter apparatus

Info

Publication number: WO2024021604A1
Application number: PCT/CN2023/079496
Authority: WO
Inventors: 刘广志; 江挺益; 朱备备
Original assignee: 苏州润迈德医疗科技有限公司
Priority date: 2022-07-26
Filing date: 2023-03-03
Publication date: 2024-02-01
Also published as: CN117481743A

Abstract

An embodiment of the present application provides a shock wave balloon catheter apparatus, comprising a catheter, a balloon surrounding the catheter in a sealing mode, and an electrode pair arranged inside the balloon. The electrode pair comprises a first electrode and a second electrode; the first electrode and the second electrode are arranged at intervals in the circumferential direction of the catheter; the first electrode comprises a first end surface located at one end in the circumferential direction of the catheter and a second end surface located at the other end in the circumferential direction of the catheter; the second electrode comprises a third end surface located at one end in the circumferential direction of the catheter and a fourth end surface located at the other end in the circumferential direction of the catheter; the first end surface is adjacent to the fourth end surface and defines a first gap; the second end surface is adjacent to the third end surface and defines a second gap; when a voltage is applied between the first electrode and the second electrode, the first electrode and the second electrode are configured to generate a discharge shock wave in at least one of the first gap and the second gap. According to the embodiment provided by the present application, only a single-layer electrode is arranged on the periphery of the catheter, so that the catheter can well pass through vessels.

Description

一种冲击波球囊导管装置A shock wave balloon catheter device

技术领域Technical field

本申请涉及医疗器械技术领域，具体涉及一种冲击波球囊导管装置。The present application relates to the technical field of medical devices, and specifically to a shock wave balloon catheter device.

背景技术Background technique

随着心脏病患者年龄的增长和疾病的进展，外周血管及冠状动脉中的斑块会逐渐钙化。这种骨状结构类似物会造成脉管狭窄，降低脉管血流量，最终可能导致脉管完全闭塞。As patients with heart disease age and the disease progresses, plaques in peripheral blood vessels and coronary arteries gradually calcify. This bone-like structure mimics the narrowing of blood vessels, reduces blood flow in the vessels, and may eventually lead to complete occlusion of the vessels.

针对脉管钙化病灶，提供了一种冲击波球囊导管装置；在治疗时，导管上的球囊被推进至脉管钙化区域；然后用流体对球囊膨胀加压；向球囊中的电极对施加高压脉冲，使电极对放电在流体中产生冲击波；冲击波撞击球囊壁，使钙化斑块破裂；钙化斑块破裂后，球囊可以进一步膨胀以打通脉管。For vascular calcification lesions, a shock wave balloon catheter device is provided; during treatment, the balloon on the catheter is advanced to the vascular calcification area; then the balloon is inflated and pressurized with fluid; the electrode pair in the balloon is A high-voltage pulse is applied to cause the electrode pair to discharge to generate a shock wave in the fluid; the shock wave hits the balloon wall to rupture the calcified plaque; after the calcified plaque ruptures, the balloon can be further expanded to open the vessel.

上述冲击波球囊导管装置中，通过导管携带球囊在脉管中移动，因此需要导管在脉管中具有良好的通过性。In the above shock wave balloon catheter device, the catheter is used to carry the balloon to move in the vessel, so the catheter needs to have good passability in the vessel.

发明内容Contents of the invention

本申请的实施例提供了一种冲击波球囊导管装置，在脉管中具有良好的通过性。Embodiments of the present application provide a shock wave balloon catheter device with good passability in blood vessels.

在一个实施例中，提供了一种冲击波球囊导管装置，包括导管、密封围绕在导管外周的球囊和设置在球囊内的至少一个电极对；所述球囊内能填充流体；每个所述电极对包括第一电极和第二电极；所述第一电极与所述第二电极沿所述导管周向间隔布置；所述第一电极包括位于所述导管周向一端的第一端面，以及位于所述导管周向另一端的第二端面；所述第二电极包括位于所述导管周向一端的第三端面，以及位于所述导管周向另一端的第四端面；所述第一端面与所述第四端面相邻且限定形成第一间隙；所述第二端面与所述第三端面相邻且限定形成第二间隙；当在所述第一电极与所述第二电极之间施加电压时，所述第一电极与所述第二电极被配置为在所述第一间隙与所述第二间隙中的至少之一形成放电冲击波。In one embodiment, a shock wave balloon catheter device is provided, including a catheter, a balloon sealed around the periphery of the catheter, and at least one electrode pair disposed in the balloon; the balloon can be filled with fluid; each The electrode pair includes a first electrode and a second electrode; the first electrode and the second electrode are arranged at intervals along the circumference of the catheter; the first electrode includes a first end surface located at one circumferential end of the catheter , and a second end surface located at the other circumferential end of the conduit; the second electrode includes a third end surface located at one circumferential end of the conduit, and a fourth end surface located at the other circumferential end of the conduit; One end surface is adjacent to the fourth end surface and defines a first gap; the second end surface is adjacent to the third end surface and defines a second gap; when the first electrode and the second electrode When a voltage is applied therebetween, the first electrode and the second electrode are configured to form a discharge shock wave in at least one of the first gap and the second gap.

本申请提供的实施例，第一电极与第二电极沿导管周向间隔布置，所述第一电极与所述第二电极之间具有第一间隙与第二间隙，通过第一间隙与第二间隙中的至少之一形成放电冲击波，因此导管外周仅布置了单层电极，使得导管在脉管中具有良好的通过性。In the embodiment provided by this application, the first electrode and the second electrode are arranged at intervals along the circumference of the catheter, and there is a first gap and a second gap between the first electrode and the second electrode. At least one of the gaps forms a discharge shock wave, so only a single layer of electrodes is arranged around the periphery of the catheter, so that the catheter has good passability in the vessel.

附图说明Description of drawings

为了更清楚地说明本申请实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域技术人员来讲，在不付出创造性劳动力的前提下，还可以根据这些附图获得其他的附图。In order to explain the technical solutions in the embodiments of the present application or the prior art more clearly, the following will describe the embodiments or the prior art. The drawings needed to be used in the description are briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application. For those skilled in the art, without exerting creative labor, they can also Other drawings are obtained from these drawings.

图1为本申请一个实施例提供的冲击波球囊导管装置的结构示意图；Figure 1 is a schematic structural diagram of a shock wave balloon catheter device provided by an embodiment of the present application;

图2为本申请一个实施例提供的电极对横截面处的结构示意图；Figure 2 is a schematic structural diagram of a cross-section of an electrode pair provided by an embodiment of the present application;

图3为本申请另一个实施例提供的冲击波球囊导管装置的结构示意图；Figure 3 is a schematic structural diagram of a shock wave balloon catheter device provided by another embodiment of the present application;

图4为本申请一个实施例提供的导管、电极对及定位护套的横截面图；Figure 4 is a cross-sectional view of a catheter, an electrode pair and a positioning sheath provided by one embodiment of the present application;

图5为本申请一个实施例提供的导管、电极对及定位护套的结构示意图；Figure 5 is a schematic structural diagram of a catheter, an electrode pair and a positioning sheath provided by one embodiment of the present application;

图6为本申请另一个实施例提供的导管、电极对及定位护套的结构示意图；Figure 6 is a schematic structural diagram of a catheter, an electrode pair and a positioning sheath provided by another embodiment of the present application;

图7为本申请一个实施例提供的导管横截面处的结构示意图；Figure 7 is a schematic structural diagram of a cross-section of a conduit provided by an embodiment of the present application;

图8为本申请另一个实施例提供的电极对横截面处的结构示意图；Figure 8 is a schematic structural diagram of a cross-section of an electrode pair provided by another embodiment of the present application;

图9为本申请一个实施例提供的电极对的轴测图；Figure 9 is an isometric view of an electrode pair provided by an embodiment of the present application;

图10为本申请另一个实施例提供的电极对横截面处的结构示意图；Figure 10 is a schematic structural diagram of a cross-section of an electrode pair provided by another embodiment of the present application;

图11为本申请一个实施例提供的电极对的径向视图；Figure 11 is a radial view of an electrode pair provided by an embodiment of the present application;

图12为本申请另一个实施例提供的电极对横截面处的结构示意图；Figure 12 is a schematic structural diagram of a cross-section of an electrode pair provided by another embodiment of the present application;

图13为本申请另一个实施例提供的电极对横截面处的结构示意图；Figure 13 is a schematic structural diagram of a cross-section of an electrode pair provided by another embodiment of the present application;

图14为本申请另一个实施例提供的电极对横截面处的结构示意图；Figure 14 is a schematic structural diagram of a cross-section of an electrode pair provided by another embodiment of the present application;

图15为本申请一个实施例提供的脉冲电压发生器与电极对的连接示意图；Figure 15 is a schematic diagram of the connection between a pulse voltage generator and an electrode pair according to an embodiment of the present application;

图16为本申请的所述远端电极对与所述近端电极对分别通过一个供电回路电连接到所述脉冲电压发生器的实施例中提供的电极对与导线的连接结构示意图；Figure 16 is a schematic diagram of the connection structure of the electrode pair and the wire provided in the embodiment of the present application in which the distal electrode pair and the proximal electrode pair are electrically connected to the pulse voltage generator through a power supply loop;

图17为图16的A-A横截面结构示意图；Figure 17 is a schematic diagram of the A-A cross-sectional structure of Figure 16;

图18为本申请另一个所述远端电极对与所述近端电极对分别通过一个供电回路电连接到所述脉冲电压发生器的实施例中提供的电极对与导线的连接结构示意图；Figure 18 is a schematic diagram of the connection structure of the electrode pair and the wire provided in another embodiment of the present application in which the distal electrode pair and the proximal electrode pair are electrically connected to the pulse voltage generator through a power supply loop;

图19为本申请所述远端电极对与所述近端电极对串接到所述脉冲电压发生器的实施例中提供的电极对与导线的连接结构示意图；Figure 19 is a schematic diagram of the connection structure of the electrode pairs and wires provided in the embodiment of the present application in which the distal electrode pair and the proximal electrode pair are connected in series to the pulse voltage generator;

图20为本申请另一个所述远端电极对与所述近端电极对串接到所述脉冲电压发生器的实施例中提供的电极对与导线的连接结构示意图；Figure 20 is a schematic diagram of the connection structure of the electrode pair and the wire provided in another embodiment of the present application in which the distal electrode pair and the proximal electrode pair are connected in series to the pulse voltage generator;

图21为本申请一个实施例提供的电极对、绝缘介质与导线的横截面结构示意图；Figure 21 is a schematic cross-sectional structural diagram of an electrode pair, an insulating medium and a conductor according to an embodiment of the present application;

图22为本申请另一个实施例提供的电极对、绝缘介质与导线的横截面结构示意图。Figure 22 is a schematic cross-sectional structural diagram of an electrode pair, an insulating medium and a conductor according to another embodiment of the present application.

附图标记说明：
1、导管；101、第一管体内腔；102、第二管体内腔；103、第二放电孔；
2、球囊；
3、电极对；3a、远端电极对；3b、近端电极对；301、第一电极；302、第二电极；3011、
第一端面；3011a、凸起部；3012、第二端面；3021、第三端面；3022、第四端面；3022a、凹槽；303、第一间隙；304、第二间隙；
4、定位护套；401、第一放电孔；
5、绝缘介质；501、第一绝缘条；502、第二绝缘条；
6、脉冲电压发生器；
7、显影环；
801、第一导线；801a、第一远端重叠段；801b、第一近端重叠段；802、第二导线；803、
第三导线；804、第四导线；804a、第四远端重叠段；804b、第四近端重叠段。Explanation of reference symbols:
1. Catheter; 101. The inner cavity of the first tube; 102. The inner cavity of the second tube; 103. The second discharge hole;
2. Balloon;
3. Electrode pair; 3a, distal electrode pair; 3b, proximal electrode pair; 301, first electrode; 302, second electrode; 3011,
First end face; 3011a, convex portion; 3012, second end face; 3021, third end face; 3022, fourth end face; 3022a, groove; 303, first gap; 304, second gap;
4. Positioning sheath; 401. First discharge hole;
5. Insulating medium; 501, first insulating strip; 502, second insulating strip;
6. Pulse voltage generator;
7. Developing ring;
801. First wire; 801a, first distal overlapping section; 801b, first proximal overlapping section; 802. Second wire; 803.
The third wire; 804, the fourth wire; 804a, the fourth distal overlapping section; 804b, the fourth proximal overlapping section.

具体实施方式Detailed ways

下面将结合附图和具体实施方式，对本发明的技术方案作详细说明，应理解这些实施方式仅用于说明本发明而不用于限制范围，在阅读了本发明之后，本领域技术人员对本发明的各种等价形式的修改均落入本申请所限定的范围内。The technical solutions of the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope. After reading the present invention, those skilled in the art will have a clear understanding of the present invention. Modifications in various equivalent forms fall within the scope of this application.

需要说明的是，当元件被称为“设置于”另一个元件，它可以直接在另一个元件上或者也可以存在居中的元件。当一个元件被认为是“连接”另一个元件，它可以是直接连接到另一个元件或者可能同时存在居中元件。It should be noted that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is said to be "connected" to another element, it can be directly connected to the other element or there may also be intervening elements present.

下面将结合图1至图22对本说明书实施例的冲击波球囊导管装置进行解释和说明。需要说明的是，在本发明的实施例中，相同的附图标记表示相同的部件。而为了简洁，在不同的实施例中，省略对相同部件的详细说明，且相同部件的说明可互相参照和引用。The shock wave balloon catheter device according to the embodiment of this specification will be explained and described below with reference to FIGS. 1 to 22 . It should be noted that in the embodiments of the present invention, the same reference numerals represent the same components. For the sake of brevity, detailed descriptions of the same components in different embodiments are omitted, and the descriptions of the same components can be referred to and quoted from each other.

冲击波球囊导管装置适应症包括介入治疗血管钙化病变。冲击波球囊导管装置包括导管、密封围绕在导管外周的球囊和设置在球囊内的至少一个电极对；所述球囊内能填充流体；每个所述电极对包括第一电极和第二电极；当在所述第一电极与所述第二电极之间施加电压时，所述第一电极与所述第二电极之间在球囊内的流体形成等离子体电弧，从而在流体内生成气泡，该气泡会膨胀和崩塌，继而在气囊中形成机械冲击波，该机械冲击波通过流体及球囊机械地传导以施加机械力或压力以使脉管***壁上或脉管***壁中的任何钙化斑块*** 开。Indications for shock wave balloon catheter devices include interventional treatment of calcified vascular lesions. The shock wave balloon catheter device includes a catheter, a balloon sealed around the periphery of the catheter, and at least one electrode pair disposed in the balloon; the balloon can be filled with fluid; each electrode pair includes a first electrode and a second electrode. Electrode; when a voltage is applied between the first electrode and the second electrode, the fluid in the balloon between the first electrode and the second electrode forms a plasma arc, thereby generating a plasma arc in the fluid. Bubbles that expand and collapse, creating a mechanical shock wave in the balloon that is mechanically conducted through the fluid and balloon to exert mechanical force or pressure to cause any calcification on or in the vasculature wall plaque fragmentation open.

在该装置临床工作时，应首先将泄压状态的球囊递送至钙化病变部位，将球囊加压以确保与血管壁紧密贴合；然后向所述第一电极与所述第二电极之间施加电压，所述第一电极与所述第二电极之间在球囊内的流体形成放电冲击波。冲击波冲击并破坏钙化病变，导致内膜和中膜钙化断裂。可通过评估球囊对称膨胀情况来判断钙化病变的修饰效果。During clinical operation of the device, the balloon in the depressurized state should first be delivered to the calcified lesion, and the balloon should be pressurized to ensure close fit with the blood vessel wall; then, the balloon should be inserted between the first electrode and the second electrode. A voltage is applied between the first electrode and the second electrode, and the fluid in the balloon forms a discharge shock wave between the first electrode and the second electrode. The shock wave impacts and destroys calcified lesions, leading to calcified rupture of the intima and media. The modification effect of calcified lesions can be judged by evaluating the symmetrical expansion of the balloon.

冲击波球囊导管装置以高效和安全地破坏浅表与深层钙化，从而明显地改善血管顺应性。该器械不仅对浅层钙化和深层钙化均有效，同时对于偏心性病变和非偏心病变亦具有治疗作用，降低夹层和穿孔等并发症的风险。The shock wave balloon catheter device efficiently and safely destroys superficial and deep calcifications, thereby significantly improving vascular compliance. This device is not only effective for superficial calcifications and deep calcifications, but also has a therapeutic effect on eccentric lesions and non-eccentric lesions, reducing the risk of complications such as dissection and perforation.

上述冲击波球囊导管装置中，通过导管携带球囊在脉管中移动，在一些情况下脉管路径已发生严重狭窄的病变甚至完全闭塞病变，因此需要尽量降低导管横截面积，提高导管的柔顺性，以使其在脉管中具有良好的通过性。In the above-mentioned shock wave balloon catheter device, the balloon is carried through the catheter to move in the vessel. In some cases, the vascular path has developed severe stenosis or even complete occlusion. Therefore, it is necessary to reduce the cross-sectional area of the catheter as much as possible and improve the flexibility of the catheter. , so that it has good passability in the blood vessels.

在一个可选实施例中，第一电极与第二电极沿径向层叠安装在导管上，并且为了阻止第一电极与第二电极连通短路，还需要在第一电极与第二电极之间再叠加一层绝缘介质。这样的构造，在导管外壁叠加设置了两层电极及一层绝缘介质，使得所述电极对所在位置的横截面面积较大，柔顺性不好，难以穿过发生严重狭窄的病变或完全闭塞病变的脉管，通过性较差。In an optional embodiment, the first electrode and the second electrode are radially stacked and installed on the catheter, and in order to prevent the first electrode and the second electrode from being connected and short-circuited, another electrode is required between the first electrode and the second electrode. Overlay a layer of insulating medium. In such a structure, two layers of electrodes and a layer of insulating medium are superimposed on the outer wall of the catheter, making the cross-sectional area where the electrode pair is located larger and less flexible, making it difficult to penetrate severely stenotic lesions or completely occluded lesions. The blood vessels have poor permeability.

本申请提供的冲击波球囊导管装置的一个可选实施例，如图1所示，所述冲击波球囊导管装置包括导管1、密封围绕在导管1外周的球囊2和设置在球囊2内的至少一个电极对3；所述球囊2内能填充流体。其中所述流体包括但不限于水,盐水,造影剂及其混合物。An optional embodiment of the shock wave balloon catheter device provided by this application is shown in Figure 1. The shock wave balloon catheter device includes a catheter 1, a balloon 2 sealed around the periphery of the catheter 1, and a balloon 2 disposed inside the balloon 2. At least one electrode pair 3; the balloon 2 can be filled with fluid. The fluid includes, but is not limited to, water, saline, contrast media, and mixtures thereof.

可选的，本实施例中所述电极对3的数量为至少2个，且至少2个所述电极对3之间沿所述导管1的轴向间隔布置，使得球囊2内的多个位置产生放电冲击波，更加高效的破坏钙化区域。Optionally, in this embodiment, the number of electrode pairs 3 is at least 2, and at least 2 electrode pairs 3 are arranged at intervals along the axial direction of the catheter 1, so that multiple electrode pairs 3 in the balloon 2 A discharge shock wave is generated at the location to destroy the calcified area more efficiently.

如图2所示，每个所述电极对3包括第一电极301和第二电极302，所述第一电极301与所述第二电极302沿所述导管1周向间隔布置。可选的，所述第一电极301与所述第二电极302的横截面形状均为圆弧状，并使得所述第一电极301的内壁与所述第二电极302的内壁分别贴合在所述导管1的外壁上，连接更加稳定，且降低了横截面尺寸。As shown in FIG. 2 , each electrode pair 3 includes a first electrode 301 and a second electrode 302 , and the first electrode 301 and the second electrode 302 are arranged at intervals along the circumference of the catheter 1 . Optionally, the cross-sectional shapes of the first electrode 301 and the second electrode 302 are arc-shaped, so that the inner walls of the first electrode 301 and the inner walls of the second electrode 302 are respectively attached to each other. On the outer wall of the conduit 1, the connection is more stable and the cross-sectional size is reduced.

所述第一电极301包括位于所述导管1周向一端的第一端面3011，以及位于所述导管1周向另一端的第二端面3012；所述第二电极302包括位于所述导管1周向一端的第三端面3021，以及位于所述导管1周向另一端的第四端面3022；所述第一端面3011与所述第四端面3022相邻且限定形成第一间隙303；所述第二端面3012与所述第三端面3021相邻且限定形成第二间隙304。The first electrode 301 includes a first end surface 3011 located at one circumferential end of the catheter 1 and a second end surface 3012 located at the other circumferential end of the catheter 1; the second electrode 302 includes a first end surface 3011 located around the catheter 1. The third end surface 3021 toward one end, and the fourth end surface 3022 at the other circumferential end of the conduit 1; the first end surface 3011 is adjacent to the fourth end surface 3022 and defines a first gap 303; The two end surfaces 3012 are adjacent to and define the third end surface 3021 A second gap 304 is formed.

圆弧状的所述第一电极301与所述第二电极302，其圆弧角可以相同，也可以不同。例如，所述第一电极301与所述第二电极302的圆弧角均为175°；或者所述第一电极301的圆弧角为120°，所述第二电极302的圆弧角为100°。The arc angles of the arc-shaped first electrode 301 and the second electrode 302 may be the same or different. For example, the arc angles of the first electrode 301 and the second electrode 302 are both 175°; or the arc angle of the first electrode 301 is 120°, and the arc angle of the second electrode 302 is 100°.

所述第一电极301与所述第二电极302沿导管1轴向的长度可以相同，也可以不同；两者在轴向上至少部分位于同一区间即可。The lengths of the first electrode 301 and the second electrode 302 along the axial direction of the catheter 1 may be the same or different; they only need to be at least partially located in the same interval in the axial direction.

当在所述第一电极301与所述第二电极302之间施加脉冲电压时，所述第一电极301与所述第二电极302之间形成电位差，并且被配置为在所述第一间隙303与所述第二间隙304中的至少之一形成放电冲击波。在向所述第一电极301与所述第二电极302之间施加脉冲电压时，所述球囊2内需填充有流体。When a pulse voltage is applied between the first electrode 301 and the second electrode 302, a potential difference is formed between the first electrode 301 and the second electrode 302, and is configured to At least one of the gap 303 and the second gap 304 forms a discharge shock wave. When a pulse voltage is applied between the first electrode 301 and the second electrode 302, the balloon 2 needs to be filled with fluid.

可选的，所述第一电极301与所述第二电极302之间的第一间隙303距离较小，可形成放电冲击波；而第二间隙304距离较大，不能形成放电冲击波。例如，所述第一电极301的圆弧角为120°，所述第二电极302的圆弧角为100°，则配置为所述第一端面3011与所述第四端面3022之间的圆心角为5°，所述第一间隙303足够小可形成放电冲击波；则所述第二端面3012与所述第三端面3021之间的圆心角为135°，由于所述第二端面3012与所述第三端面3021之间距离较远，所述第二间隙304不形成放电冲击波。Optionally, the first gap 303 between the first electrode 301 and the second electrode 302 is relatively small and can form a discharge shock wave; while the second gap 304 is relatively large and cannot form a discharge shock wave. For example, if the arc angle of the first electrode 301 is 120° and the arc angle of the second electrode 302 is 100°, then they are configured as the center of the circle between the first end surface 3011 and the fourth end surface 3022 The angle is 5°, and the first gap 303 is small enough to form a discharge shock wave; then the central angle between the second end face 3012 and the third end face 3021 is 135°. The distance between the third end faces 3021 is relatively far, and the second gap 304 does not form a discharge shock wave.

在本实施例中，第一间隙303及第二间隙304均足够小，当在所述第一电极301与所述第二电极302之间施加电压时，在所述第一间隙303与所述第二间隙304中均能形成放电冲击波。例如，所述第一电极301与所述第二电极302的圆弧角均为175°，两者对称布置，则所述第一端面3011与所述第四端面3022之间的圆心角为5°，所述第二端面3012与所述第三端面3021之间的圆心角也为5°，所述第一间隙303及所述第二间隙304均可形成放电冲击波。In this embodiment, both the first gap 303 and the second gap 304 are small enough. When a voltage is applied between the first electrode 301 and the second electrode 302, the gap between the first gap 303 and the second gap 304 is small enough. A discharge shock wave can be formed in the second gap 304 . For example, if the arc angles of the first electrode 301 and the second electrode 302 are both 175° and they are arranged symmetrically, then the central angle between the first end surface 3011 and the fourth end surface 3022 is 5 °, the central angle between the second end surface 3012 and the third end surface 3021 is also 5°, and both the first gap 303 and the second gap 304 can form a discharge shock wave.

可选的，相邻的两个所述电极对3中，其中一个所述电极对3的可形成放电冲击波的间隙与另一个所述电极对3的可形成放电冲击波的间隙沿导管1周向间隔布置。这样的配置使得施加在病变位置的冲击波更加分散，有利于钙化斑块的破碎。Optionally, among the two adjacent electrode pairs 3, the gap between one of the electrode pairs 3 that can form a discharge shock wave and the gap between the other electrode pair 3 that can form a discharge shock wave are along the circumferential direction of the catheter 1 Spaced arrangement. This configuration makes the shock wave applied at the lesion location more dispersed, which is beneficial to the fragmentation of calcified plaques.

上述实施例，沿导管1周向间隔布置第一电极301与第二电极302；因此导管1外周仅布置了单层电极，横截面积小，柔顺性良好，使得导管1在脉管中具有良好的通过性。In the above embodiment, the first electrode 301 and the second electrode 302 are arranged at intervals along the circumference of the catheter 1; therefore, only a single layer of electrodes is arranged on the outer periphery of the catheter 1, with a small cross-sectional area and good flexibility, so that the catheter 1 has good performance in the vessel. passability.

在一个可选实施例中，所述导管1的管体外壁上开设有沿周向延伸的安装槽；所述电极对3设置在所述安装槽内，如图1所示。通过将所述电极对3设置在所述安装槽内，可进一步减小所述电极对3所在位置的横截面面积，提高导管1的通过性。 In an optional embodiment, the outer wall of the catheter 1 is provided with a circumferentially extending installation groove; the electrode pair 3 is provided in the installation groove, as shown in Figure 1 . By arranging the electrode pair 3 in the installation groove, the cross-sectional area where the electrode pair 3 is located can be further reduced and the passability of the conduit 1 can be improved.

在电极对3跟随导管1在人体脉管中运动过程及放电过程中，电极对3会跟随导管1弯曲，受到脉管施加的阻力，以及机械振动，这都有可能导致电极对3相对导管1产生位移，甚至从导管1上脱落。因此，在本申请的可选实施例中，所述冲击波球囊导管装置还包括定位件；所述定位件用于保持所述电极对3与所述导管1之间的相对位置。When the electrode pair 3 follows the catheter 1 in the movement and discharge process of the human body's blood vessels, the electrode pair 3 will follow the catheter 1 to bend, and will be subject to the resistance exerted by the blood vessel and mechanical vibration, which may cause the electrode pair 3 to move relative to the catheter 1 Displacement occurs and even falls off the catheter 1. Therefore, in an optional embodiment of the present application, the shock wave balloon catheter device further includes a positioning member; the positioning member is used to maintain the relative position between the electrode pair 3 and the catheter 1 .

可选的，所述定位件是粘接层，通过粘接层，将第一电极301和第二电极302分别粘接在导管1上。Optionally, the positioning member is an adhesive layer, and the first electrode 301 and the second electrode 302 are respectively bonded to the catheter 1 through the adhesive layer.

可选的，所述定位件是定位销、定位螺栓、定位螺钉、铆钉及其他等同构造，通过所述定位销、定位螺栓、定位螺钉、铆钉及其他等同构造，将第一电极301和第二电极302分别固定在导管1上，也可以通过所述定位销、定位螺栓、定位螺钉、铆钉及其他等同构造，将第一电极301与第二电极302固定连接。Optionally, the positioning parts are positioning pins, positioning bolts, positioning screws, rivets and other equivalent structures. Through the positioning pins, positioning bolts, positioning screws, rivets and other equivalent structures, the first electrode 301 and the second electrode are connected to each other. The electrodes 302 are respectively fixed on the catheter 1. The first electrode 301 and the second electrode 302 can also be fixedly connected through the positioning pins, positioning bolts, positioning screws, rivets and other equivalent structures.

可选的，所述定位件是榫卯结构、过盈配合结构及其他等同构造，通过所述榫卯结构、过盈配合结构及其他等同构造，将第一电极301和第二电极302分别固定在导管1上，也可以通过所述榫卯结构、过盈配合结构及其他等同构造，将第一电极301与第二电极302固定连接。Optionally, the positioning member is a mortise-and-tenon structure, an interference fit structure, or other equivalent structures, through which the first electrode 301 and the second electrode 302 are respectively fixed. On the catheter 1, the first electrode 301 and the second electrode 302 can also be fixedly connected through the mortise and tenon structure, interference fit structure and other equivalent structures.

在一个可选实施例中，所述定位件包括设置在所述电极对3外周的绝缘材质的定位护套4，如图3所示。可选的，所述定位护套4通过热塑成型。In an optional embodiment, the positioning member includes a positioning sheath 4 of insulating material disposed around the periphery of the electrode pair 3, as shown in FIG. 3 . Optionally, the positioning sheath 4 is formed by thermoplastic.

如图4所示，通过热塑成型的所述定位护套4，将所述第一电极301与所述第二电极302包裹固定在所述导管1上，可有效避免术中各种因素导致的所述第一电极301或所述第二电极302从所述导管1上脱落，以及所述第一电极301或所述第二电极302相对所述导管1发生位移，提高了装置的安全可靠性。As shown in Figure 4, the first electrode 301 and the second electrode 302 are wrapped and fixed on the catheter 1 through the thermoplastic positioning sheath 4, which can effectively avoid various factors during the operation. The first electrode 301 or the second electrode 302 falls off from the catheter 1, and the first electrode 301 or the second electrode 302 is displaced relative to the catheter 1, which improves the safety and reliability of the device. sex.

所述定位护套4设置有第一放电孔401；所述第一放电孔401位于所述第一间隙303与所述第二间隙304中可形成放电冲击波的间隙的外侧。本实施例中，所述第一间隙303与所述第二间隙304均可形成放电冲击波，则所述定位护套4在所述第一间隙303的外侧及所述第二间隙304外侧分别设置有所述第一放电孔401。所述第一放电孔401用于使得球囊2内的流体能够进入所述第一间隙303及所述第二间隙304，并且所述第一间隙303及所述第二间隙304的流体在电极放电产生气泡后，气泡产生的冲击波能量能通过所述第一放电孔401到达球囊2壁。The positioning sheath 4 is provided with a first discharge hole 401; the first discharge hole 401 is located outside the gap between the first gap 303 and the second gap 304 that can form a discharge shock wave. In this embodiment, both the first gap 303 and the second gap 304 can form discharge shock waves, and the positioning sheaths 4 are respectively provided outside the first gap 303 and the second gap 304. There is the first discharge hole 401. The first discharge hole 401 is used to allow the fluid in the balloon 2 to enter the first gap 303 and the second gap 304, and the fluid in the first gap 303 and the second gap 304 passes through the electrode. After the discharge generates bubbles, the shock wave energy generated by the bubbles can reach the wall of the balloon 2 through the first discharge hole 401 .

当所述电极对3的数量为至少2个时，可选的，如图5所示，在每个所述电极对3外侧对应覆盖1个所述定位护套4；或者，如图6所示，1个所述定位护套4覆盖在至少2个所述电极对3外侧；进一步的，热塑成型制作一个所述定位护套4，使其覆盖在导管1上所有所述电极对3外侧。When the number of electrode pairs 3 is at least 2, optionally, as shown in Figure 5 , one positioning sheath 4 is covered on the outside of each electrode pair 3; or, as shown in Figure 6 As shown, one of the positioning sheaths 4 covers the outsides of at least two of the electrode pairs 3; further, one of the positioning sheaths 4 is made by thermoplastic molding to cover all of the catheter 1 The outer side of the electrode pair 3.

上述实施例中，所述电极对3所在位置的横截面上包括导管1，套装在导管1外周的电极对3以及套装在电极对3外周的定位护套4，该位置横截面的直径(即定位护套4的外壁直径)可小于1.2mm，在脉管中具有良好的通过性；其中通过热塑成型的所述定位护套4的厚度可低至0.01mm，因此所述定位护套4在有效固定电极对3的同时，对于导管1的横截面尺寸影响极低。In the above embodiment, the cross section of the position where the electrode pair 3 is located includes the catheter 1, the electrode pair 3 sleeved on the outer periphery of the catheter 1, and the positioning sheath 4 sleeved on the outer periphery of the electrode pair 3. The diameter of the cross section at this position (i.e. The outer wall diameter of the positioning sheath 4 can be less than 1.2mm, and has good passability in the blood vessels; the thickness of the positioning sheath 4 through thermoplastic molding can be as low as 0.01mm, so the positioning sheath 4 While effectively fixing the electrode pair 3, the effect on the cross-sectional size of the catheter 1 is extremely low.

在另一个可选实施例中，如图7所示，所述导管1的管体上开设有沿周向间隔布置的第一管体内腔101和第二管体内腔102；所述第一电极301嵌入在所述第一管体内腔101，所述第二电极302嵌入在所述第二管体内腔102；所述第一管体内腔101和所述第二管体内腔102构成所述定位件，可以保持所述电极对3与所述导管1之间的相对位置；并且将所述第一电极301与所述第二电极302分别嵌入在所述管体内，可进一步降低所述导管1上的所述电极对3所在位置的横截面的尺寸。所述导管1的外壁上开设有第二放电孔103；所述第二放电孔103位于所述第一间隙303与所述第二间隙304中可形成放电冲击波的间隙处。本实施例中，所述第一间隙303与所述第二间隙304均可形成放电冲击波，则所述导管1的外壁上在所述第一间隙303及所述第二间隙304处分别设置有所述第二放电孔103。所述第二放电孔103用于使得球囊2内的流体能够进入所述第一间隙303及所述第二间隙304，并且所述第一间隙303及所述第二间隙304的流体在电极放电产生气泡后，气泡产生的冲击波能量能通过所述第二放电孔103到达球囊2壁。In another optional embodiment, as shown in Figure 7, the tube body of the catheter 1 is provided with a first tube inner lumen 101 and a second tube inner lumen 102 arranged circumferentially spaced apart; the first electrode 301 is embedded in the first tube inner cavity 101, and the second electrode 302 is embedded in the second tube inner cavity 102; the first tube inner cavity 101 and the second tube inner cavity 102 constitute the positioning components, the relative position between the electrode pair 3 and the catheter 1 can be maintained; and the first electrode 301 and the second electrode 302 are respectively embedded in the tube body, the catheter 1 can be further lowered The size of the cross section where the electrode pair 3 is located. A second discharge hole 103 is formed on the outer wall of the conduit 1; the second discharge hole 103 is located in the gap between the first gap 303 and the second gap 304 where a discharge shock wave can be formed. In this embodiment, both the first gap 303 and the second gap 304 can form discharge shock waves, and the outer wall of the conduit 1 is provided with The second discharge hole 103. The second discharge hole 103 is used to allow the fluid in the balloon 2 to enter the first gap 303 and the second gap 304, and the fluid in the first gap 303 and the second gap 304 passes through the electrode. After the discharge generates bubbles, the shock wave energy generated by the bubbles can reach the wall of the balloon 2 through the second discharge hole 103 .

需要说明的是，所述定位件也可以是上述实施例之间的结合。It should be noted that the positioning member may also be a combination of the above embodiments.

上述实施例中，所述第一端面3011与所述第四端面3022相邻且限定形成第一间隙303，所述第二端面3012与所述第三端面3021相邻且限定形成第二间隙304；所述第一间隙303与所述第二间隙304使得所述第一电极301与所述第二电极302分隔开；所述定位件用于保持所述电极对3与所述导管1之间的相对位置，即可以使得所述第一电极301与所述第二电极302保持分隔状态。因此所述第一间隙303与所述第二间隙304处，并不必须设置绝缘介质。In the above embodiment, the first end surface 3011 is adjacent to the fourth end surface 3022 and defines a first gap 303 , and the second end surface 3012 is adjacent to the third end surface 3021 and defines a second gap 304 ; The first gap 303 and the second gap 304 separate the first electrode 301 and the second electrode 302; the positioning member is used to maintain the connection between the electrode pair 3 and the catheter 1 The relative position between them can keep the first electrode 301 and the second electrode 302 in a separated state. Therefore, it is not necessary to provide an insulating medium at the first gap 303 and the second gap 304 .

但是，为了有利于放电的产生，所述第一间隙303或者所述第二间隙304的距离较小，极端情况下，有可能出现因所述第一电极301或所述第二电极302固定不牢固，或者因所述导管1弯曲，使得所述第一电极301与所述第二电极302的相对位置产生变化，导致了所述第一电极301与所述第二电极302接触而短路，这种情况需要避免出现。因此，在一个可选实施例中，所述第一间隙303与所述第二间隙304中，至少在可形成放电冲击波的间隙处设置有绝缘介质5，防止所述第一电极301与所述第二电极302接触，提高装置的可靠性。However, in order to facilitate the generation of discharge, the distance between the first gap 303 or the second gap 304 is small. In extreme cases, the first electrode 301 or the second electrode 302 may not be fixed properly. firm, or due to the bending of the catheter 1, the relative positions of the first electrode 301 and the second electrode 302 change, causing the first electrode 301 and the second electrode 302 to contact and short-circuit, which This situation needs to be avoided. Therefore, in an optional embodiment, the first gap 303 and the second gap 304 are provided at least at the gap where a discharge shock wave can be formed. An insulating medium 5 is provided to prevent the first electrode 301 from contacting the second electrode 302, thereby improving the reliability of the device.

在本实施例中，所述第一间隙303与所述第二间隙304均可形成放电冲击波，因此所述第一间隙303与所述第二间隙304处均设置有绝缘介质5。In this embodiment, both the first gap 303 and the second gap 304 can form a discharge shock wave, so the insulating medium 5 is provided in both the first gap 303 and the second gap 304 .

所述第一间隙303与所述第二间隙304之间的空间需要有流体，以在所述第一电极301与所述第二电极302产生放电时，在所述第一间隙303及所述第二间隙304之间的流体分别产生气泡。因此，所述第一间隙303及所述第二间隙304的空间不能全部被所述绝缘介质5占据；即所述第一间隙303处的所述绝缘介质5的体积小于所述第一间隙303的体积；即所述第二间隙304处的所述绝缘介质5的体积小于所述第二间隙304的体积。There needs to be fluid in the space between the first gap 303 and the second gap 304, so that when the first electrode 301 and the second electrode 302 generate discharge, there is fluid between the first gap 303 and the second gap 304. The fluid between the second gaps 304 respectively generates bubbles. Therefore, the spaces of the first gap 303 and the second gap 304 cannot all be occupied by the insulating medium 5 ; that is, the volume of the insulating medium 5 at the first gap 303 is smaller than the first gap 303 The volume of the insulating medium 5 at the second gap 304 is smaller than the volume of the second gap 304 .

可选的，所述第一间隙303处的所述绝缘介质5与所述第一端面3011相接，且两者的接触面积小于所述第一端面3011的表面积；所述第一间隙303处的绝缘介质5与所述第四端面3022相接，且两者的接触面积小于所述第四端面3022的表面积。同样的，所述第二间隙304处的绝缘介质5与所述第二端面3012相接，且两者的接触面积小于所述第二端面3012的表面积；所述第二间隙304处的所述绝缘介质5与所述第三端面3021相接，且两者的接触面积小于所述第三端面3021的表面积。Optionally, the insulating medium 5 at the first gap 303 is in contact with the first end surface 3011, and the contact area between the two is smaller than the surface area of the first end surface 3011; The insulating medium 5 is in contact with the fourth end surface 3022, and the contact area between them is smaller than the surface area of the fourth end surface 3022. Similarly, the insulating medium 5 at the second gap 304 is in contact with the second end surface 3012, and the contact area between the two is smaller than the surface area of the second end surface 3012; The insulating medium 5 is in contact with the third end surface 3021 , and the contact area between the two is smaller than the surface area of the third end surface 3021 .

在一个可选实施例中，如图8所示，在所述第一间隙303处，所述绝缘介质5沿所述导管1径向的宽度小于所述第一端面3011的宽度，所述绝缘介质5沿所述导管1径向的宽度小于第四端面3022的宽度；且所述绝缘介质5位于靠近所述导管1外壁的一侧。在该实施例中，所述第一间隙303沿所述导管1径向远离所述导管1外壁的一侧的部分空间内为可产生气泡的流体，气泡产生的冲击波能量能无障碍的到达球囊2壁。In an optional embodiment, as shown in Figure 8, at the first gap 303, the width of the insulating medium 5 along the radial direction of the conduit 1 is smaller than the width of the first end surface 3011. The width of the medium 5 along the radial direction of the conduit 1 is smaller than the width of the fourth end surface 3022 ; and the insulating medium 5 is located on the side close to the outer wall of the conduit 1 . In this embodiment, a part of the first gap 303 along the radial direction of the conduit 1 away from the outer wall of the conduit 1 is filled with fluid that can generate bubbles. The shock wave energy generated by the bubbles can reach the ball without any obstacles. Capsule 2-walled.

同样的，在所述第二间隙304处，所述绝缘介质5沿导管1径向的宽度小于第二端面3012的宽度，所述绝缘介质5沿导管1径向的宽度小于第三端面3021的宽度；且所述绝缘介质5位于靠近导管1外壁的一侧。在该实施例中，所述第二间隙304沿导管1径向远离导管1外壁的一侧的部分空间内为可产生气泡的流体，气泡产生的冲击波能量能无障碍的到达球囊2壁。Similarly, at the second gap 304 , the width of the insulating medium 5 along the radial direction of the conduit 1 is less than the width of the second end face 3012 , and the width of the insulating medium 5 along the radial direction of the conduit 1 is less than the width of the third end face 3021 width; and the insulating medium 5 is located on the side close to the outer wall of the conduit 1 . In this embodiment, the part of the second gap 304 along the radial direction of the catheter 1 on the side away from the outer wall of the catheter 1 is filled with fluid that can generate bubbles. The shock wave energy generated by the bubbles can reach the wall of the balloon 2 without any obstacles.

在另一个可选实施例中，如图9所示，在所述第一间隙303处，所述绝缘介质5沿导管1轴向的长度小于第一端面3011的长度，所述绝缘介质5沿导管1轴向的长度小于第四端面3022的长度。在该实施例中，所述绝缘介质5可以设置在第一间隙303沿导管1轴向的中心位置，也可以设置在靠近轴向任意一侧的位置。在该实施例中，所述第一间隙303沿导管1轴向的部分空间内为可产生气泡的流体，气泡产生的冲击波能量能无障碍的到达球囊2壁。In another optional embodiment, as shown in Figure 9, at the first gap 303, the length of the insulating medium 5 along the axial direction of the conduit 1 is less than the length of the first end surface 3011, and the length of the insulating medium 5 along the axial direction of the conduit 1 The axial length of the catheter 1 is less than the length of the fourth end surface 3022 . In this embodiment, the insulating medium 5 can be disposed at the central position of the first gap 303 along the axial direction of the conduit 1, or can be disposed close to any side of the axial direction. In this embodiment, a portion of the first gap 303 along the axial direction of the catheter 1 contains fluid that can generate bubbles, and the shock wave energy generated by the bubbles can reach the wall of the balloon 2 without any obstacles.

同样的，在所述第二间隙304处，所述绝缘介质5沿导管1轴向的长度小于第二端面3012 的长度，所述绝缘介质5沿导管1轴向的长度小于第三端面3021的长度。在该实施例中，所述绝缘介质5可以设置在第二间隙304沿导管1轴向的中心位置，也可以设置在靠近轴向任意一侧的位置。在该实施例中，所述第二间隙304沿导管1轴向的部分空间内为可产生气泡的流体，气泡产生的冲击波能量能无障碍的到达球囊2壁。Similarly, at the second gap 304, the length of the insulating medium 5 along the axial direction of the conduit 1 is smaller than the second end surface 3012. The length of the insulating medium 5 along the axial direction of the conduit 1 is less than the length of the third end surface 3021. In this embodiment, the insulating medium 5 can be disposed at the center of the second gap 304 along the axial direction of the conduit 1, or can be disposed close to any side of the axial direction. In this embodiment, a portion of the second gap 304 along the axial direction of the catheter 1 contains fluid that can generate bubbles, and the shock wave energy generated by the bubbles can reach the wall of the balloon 2 without any obstruction.

在图10和图11所示的可选实施例中，在所述第一间隙303处，所述绝缘介质5包括第一绝缘条501和第二绝缘条502。其中可选的，如图10所示，所述第一绝缘条501与所述第二绝缘条502沿导管1径向间隔排布，则所述第一绝缘条501与所述第二绝缘条502之间的空间内为可产生气泡的流体，气泡产生的冲击波能量能到达球囊2壁；或者如图11所示，所述第一绝缘条501与所述第二绝缘条502沿导管1轴向间隔排布，则所述第一绝缘条501与所述第二绝缘条502之间的空间内为可产生气泡的流体，气泡产生的冲击波能量能无障碍的到达球囊2壁。In the optional embodiment shown in FIGS. 10 and 11 , at the first gap 303 , the insulating medium 5 includes a first insulating strip 501 and a second insulating strip 502 . Optionally, as shown in Figure 10, the first insulating strip 501 and the second insulating strip 502 are arranged at intervals along the radial direction of the conduit 1, then the first insulating strip 501 and the second insulating strip The space between 502 contains fluid that can generate bubbles, and the shock wave energy generated by the bubbles can reach the wall of the balloon 2; or as shown in Figure 11, the first insulating strip 501 and the second insulating strip 502 are arranged along the catheter 1 If arranged at axial intervals, the space between the first insulating strip 501 and the second insulating strip 502 is filled with fluid that can generate bubbles, and the shock wave energy generated by the bubbles can reach the wall of the balloon 2 without any obstacles.

同样的，在所述第二间隙304处，所述绝缘介质5包括第一绝缘条501和第二绝缘条502。其中可选的，如图10所示，所述第一绝缘条501与所述第二绝缘条502沿导管1径向间隔排布，则所述第一绝缘条501与所述第二绝缘条502之间的空间内为可产生气泡的流体，气泡产生的冲击波能量能到达球囊2壁；或者如图11所示，所述第一绝缘条501与所述第二绝缘条502沿导管1轴向间隔排布，则所述第一绝缘条501与所述第二绝缘条502之间的空间内为可产生气泡的流体，气泡产生的冲击波能量能无障碍的到达球囊2壁。Similarly, at the second gap 304 , the insulating medium 5 includes a first insulating strip 501 and a second insulating strip 502 . Optionally, as shown in Figure 10, the first insulating strip 501 and the second insulating strip 502 are arranged at intervals along the radial direction of the conduit 1, then the first insulating strip 501 and the second insulating strip The space between 502 contains fluid that can generate bubbles, and the shock wave energy generated by the bubbles can reach the wall of the balloon 2; or as shown in Figure 11, the first insulating strip 501 and the second insulating strip 502 are arranged along the catheter 1 If arranged at axial intervals, the space between the first insulating strip 501 and the second insulating strip 502 is filled with fluid that can generate bubbles, and the shock wave energy generated by the bubbles can reach the wall of the balloon 2 without any obstacles.

在一个可选实施例中，在所述第一间隙303处，所述第一端面3011上设置有沿轴向或径向延伸的凸起部3011a；所述第四端面3022的相应位置上设置有沿轴向或径向延伸的凹槽3022a；图12至图14所示的实施例中的凸起部3011a及凹槽3022a为轴向延伸。所述第一端面3011上的所述凸起部3011a与所述第四端面3022上的所述凹槽3022a的形状适应性配合，可以均是三角形、均是梯形或者均是圆弧形所。所述第一端面3011上的所述凸起部3011a与所述第四端面3022上的所述凹槽3022a之间限定形成沿轴向或径向延伸的所述第一间隙303。所述第一端面3011上接触所述绝缘介质5的区域位于所述凸起部3011a之外；所述第四端面3022上接触所述绝缘介质5的区域位于所述凹槽3022a之外。In an optional embodiment, at the first gap 303, the first end surface 3011 is provided with an axially or radially extending protrusion 3011a; the fourth end surface 3022 is provided with a protrusion 3011a at a corresponding position. There is a groove 3022a extending in the axial or radial direction; the protruding portion 3011a and the groove 3022a in the embodiment shown in Figures 12 to 14 extend in the axial direction. The shapes of the protruding portion 3011a on the first end surface 3011 and the groove 3022a on the fourth end surface 3022 are adaptively matched, and they can be triangular, trapezoidal or arc-shaped. The first gap 303 extending in the axial or radial direction is defined between the protruding portion 3011a on the first end surface 3011 and the groove 3022a on the fourth end surface 3022. The area of the first end surface 3011 that contacts the insulating medium 5 is located outside the protruding portion 3011a; the area of the fourth end surface 3022 that contacts the insulating medium 5 is located outside the groove 3022a.

同样的，在所述第二间隙304处，所述第二端面3012上设置有沿轴向或径向延伸的凸起部3011a；所述第三端面3021的相应位置上设置有沿轴向或径向延伸的凹槽3022a；所述第二端面3012上的所述凸起部3011a及所述第三端面3021上的所述凹槽3022a的形状可以均是三角形、均是梯形或者均是圆弧形所。所述第二端面3012上的所述凸起部3011a与所述第三端面3021上的所述凹槽3022a之间限定形成沿轴向或径向延伸的所述第二间隙304。所述第二端面3012上接触所述绝缘介质5的区域位于所述凸起部3011a之外；所述第三端面3021上接触所述绝缘介质5的区域位于所述凹槽3022a之外。Similarly, at the second gap 304, the second end surface 3012 is provided with a protrusion 3011a extending in the axial or radial direction; the corresponding position of the third end surface 3021 is provided with a protrusion 3011a extending in the axial or radial direction. The radially extending groove 3022a; the shape of the protrusion 3011a on the second end surface 3012 and the groove 3022a on the third end surface 3021 can be triangular, trapezoidal or circular. Arc place. The second gap 304 extending in the axial or radial direction is defined between the protruding portion 3011a on the second end surface 3012 and the groove 3022a on the third end surface 3021. The area of the second end surface 3012 that contacts the insulating medium 5 is located outside the protruding portion 3011a; the area of the third end surface 3021 that contacts the insulating medium 5 is located outside the groove 3022a.

本实施例中，通过所述凸起部3011a与所述凹槽3022a的配合，增大了用于放电的相邻端面面积，有利于电极的相邻端面之间产生放电。In this embodiment, the cooperation between the protruding portion 3011a and the groove 3022a increases the area of adjacent end faces for discharge, which is conducive to the generation of discharge between adjacent end faces of the electrodes.

在一个可选实施例中，所述导管1的外侧套装有显影环7。所述显影环7位于球囊2内，用于通过成像***，标记球囊2在人体中的位置。优选的，所述显影环7位于所述电极对3之外的区域，而不与所述电极对3叠加放置，防止导管1局部横截面尺寸过大。In an optional embodiment, a developing ring 7 is installed on the outside of the catheter 1 . The developing ring 7 is located inside the balloon 2 and is used to mark the position of the balloon 2 in the human body through the imaging system. Preferably, the developing ring 7 is located in an area outside the electrode pair 3 and is not placed overlying the electrode pair 3 to prevent the local cross-sectional size of the catheter 1 from being excessively large.

在一个可选实施例中，所述装置还包括用于为所述电极对3提供脉冲电压的脉冲电压发生器6；所述脉冲电压发生器6通过导线电连接所述电极对3。In an optional embodiment, the device further includes a pulse voltage generator 6 for providing pulse voltage to the electrode pair 3; the pulse voltage generator 6 is electrically connected to the electrode pair 3 through wires.

在一个可选实施例中，所述电极对3的数量至少为两个，至少两个所述电极对3包括远端电极对3a和近端电极对3b；所述近端电极对3b位于所述脉冲电压发生器6与所述远端电极对3a之间。其中，所述远端电极对3a和所述近端电极对3b用于通过两个所述电极对3之间的相对位置关系区分两个所述电极对3。当所述电极对3的数量大于两个时，所述远端电极对3a和所述近端电极对3b均并不特指某一个电极对3，任选其中两个所述电极对3，均可称其为远端电极对3a和近端电极对3b。In an optional embodiment, the number of the electrode pairs 3 is at least two, and the at least two electrode pairs 3 include a distal electrode pair 3a and a proximal electrode pair 3b; the proximal electrode pair 3b is located at between the pulse voltage generator 6 and the distal electrode pair 3a. The distal electrode pair 3a and the proximal electrode pair 3b are used to distinguish the two electrode pairs 3 through the relative positional relationship between the two electrode pairs 3. When the number of electrode pairs 3 is greater than two, neither the distal electrode pair 3a nor the proximal electrode pair 3b refers to a specific electrode pair 3, and two of the electrode pairs 3 are optionally selected. Both can be called the distal electrode pair 3a and the proximal electrode pair 3b.

所述导线包括连接在所述脉冲电压发生器6与所述远端电极对3a之间的第一导线801；所述第一导线801沿着所述导管1延伸方向铺设，则必须经过所述近端电极沿导管1轴向所在的区间，将位于所述近端电极沿导管1轴向所在的区间内的部分第一导线801定义为第一近端重叠段801b。The wires include a first wire 801 connected between the pulse voltage generator 6 and the distal electrode pair 3a; when the first wire 801 is laid along the extension direction of the catheter 1, it must pass through the The section of the proximal electrode along the axial direction of the catheter 1 is defined as the first proximal overlapping section 801b.

可选的，所述第一近端重叠段801b叠放在所述近端电极对3b的外壁上。该实施例中，第一导线801会导致近端电极对3b处的外轮廓横截面积增大，降低导管1的通过性和顺应性。Optionally, the first proximal overlapping section 801b is stacked on the outer wall of the proximal electrode pair 3b. In this embodiment, the first wire 801 will cause the cross-sectional area of the outer contour at the proximal electrode pair 3b to increase, reducing the passability and compliance of the catheter 1 .

在另一个可选实施例中，所述第一近端重叠段801b设置在所述近端电极对3b的所述第一间隙303或所述第二间隙304内。该实施例中，避免了第一导线801在近端电极对3b处占用空间导致近端电极对3b处的外轮廓横截面积增大，相比于上一实施例，导管1在脉管中具有更良好的通过性。另外，所述第一近端重叠段801b设置在所述第一间隙303或所述第二间隙304内，可用于所述近端电极对3b的第一电极301与第二电极302之间保持绝缘隔离。In another optional embodiment, the first proximal overlapping section 801b is disposed within the first gap 303 or the second gap 304 of the proximal electrode pair 3b. In this embodiment, it is avoided that the first lead wire 801 occupies space at the proximal electrode pair 3b and causes the outer contour cross-sectional area at the proximal electrode pair 3b to increase. Compared with the previous embodiment, the catheter 1 is in the vessel. Has better passability. In addition, the first proximal overlapping section 801b is disposed in the first gap 303 or the second gap 304, and can be used to maintain between the first electrode 301 and the second electrode 302 of the proximal electrode pair 3b. Insulation isolation.

该实施例中，当所述近端电极对3b的所述第一间隙303与所述第二间隙304均设置有绝缘介质5；则所述绝缘介质5与所述第一近端重叠段801b位于所述近端电极对3b位于同一间隙；当所述近端电极对3b的所述第一间隙303与所述第二间隙304中，仅有一个间隙内设置有绝缘介质5，则所述绝缘介质5与所述第一近端重叠段801b中，其中一个位于所述近端电极对3b的所述第一间隙303，另一个位于所述近端电极对3b的所述第二间隙304。In this embodiment, when the first gap 303 and the second gap 304 of the proximal electrode pair 3b are both provided with an insulating medium 5; then the insulating medium 5 and the first proximal overlapping section 801b The proximal electrode pair 3b is located at the same One gap; when only one of the first gap 303 and the second gap 304 of the proximal electrode pair 3b is provided with an insulating medium 5, then the insulating medium 5 and the first proximal Among the end overlapping segments 801b, one is located in the first gap 303 of the proximal electrode pair 3b, and the other is located in the second gap 304 of the proximal electrode pair 3b.

当所述绝缘介质5与所述第一近端重叠段801b均位于所述近端电极对3b的第一间隙303时：When the insulating medium 5 and the first proximal overlapping section 801b are both located in the first gap 303 of the proximal electrode pair 3b:

在一个可选实施例中，如图21所示，所述绝缘介质5沿导管1径向的宽度小于第一端面3011的宽度，所述绝缘介质5沿导管1径向的宽度小于所述第四端面3022的宽度；且所述绝缘介质5位于所述第一近端重叠段801b与所述导管1外壁之间。In an optional embodiment, as shown in Figure 21, the width of the insulating medium 5 along the radial direction of the conduit 1 is smaller than the width of the first end face 3011, and the width of the insulating medium 5 along the radial direction of the conduit 1 is smaller than the width of the first end face 3011. The width of the four end surfaces 3022; and the insulating medium 5 is located between the first proximal overlapping section 801b and the outer wall of the catheter 1.

在另一个可选实施例中，所述绝缘介质5沿导管1轴向的长度小于所述第一端面3011的长度，所述绝缘介质5沿导管1轴向的长度小于所述第四端面3022的长度；且所述绝缘介质5上设置有沿导管1轴向贯穿的通道；所述第一近端重叠段801b设置在所述通道内。In another optional embodiment, the length of the insulating medium 5 along the axial direction of the conduit 1 is less than the length of the first end face 3011 , and the length of the insulating medium 5 along the axial direction of the conduit 1 is less than the length of the fourth end face 3022 length; and the insulating medium 5 is provided with a channel penetrating along the axial direction of the catheter 1; the first proximal overlapping section 801b is provided in the channel.

在另一个可选实施例中，如图22所示，所述绝缘介质5包括第一绝缘条501和第二绝缘条502；其中，所述第一绝缘条501与所述第二绝缘条502沿导管1径向间隔排布，所述第一近端重叠段801b位于所述第一绝缘条501与所述第二绝缘条502之间；或者所述第一绝缘条501与所述第二绝缘条502沿导管1轴向间隔排布，所述第一绝缘条501与所述第二绝缘条502分别设置有沿导管1轴向贯穿的通道；所述第一近端重叠段801b设置在所述第一绝缘条501与所述第二绝缘条502所述通道内。In another optional embodiment, as shown in Figure 22, the insulating medium 5 includes a first insulating strip 501 and a second insulating strip 502; wherein the first insulating strip 501 and the second insulating strip 502 Arranged at radial intervals along the catheter 1, the first proximal overlapping sections 801b are located between the first insulating strip 501 and the second insulating strip 502; or the first insulating strip 501 and the second The insulating strips 502 are arranged at intervals along the axial direction of the catheter 1. The first insulating strips 501 and the second insulating strips 502 are respectively provided with channels penetrating along the axial direction of the catheter 1; the first proximal overlapping section 801b is provided on The first insulating strip 501 and the second insulating strip 502 are in the channel.

在另一个可选实施例中，所述第一端面3011上设置有凸起部3011a；所述第四端面3022的相应位置上设置有凹槽3022a；所述第一端面3011上接触所述绝缘介质5的区域位于所述凸起部3011a之外；所述第四端面3022上接触所述绝缘介质5的区域位于所述凹槽3022a之外；所述第一近端重叠段801b位于所述凸起部3011a与所述凹槽3022a之间。In another optional embodiment, the first end surface 3011 is provided with a protrusion 3011a; the fourth end surface 3022 is provided with a groove 3022a at a corresponding position; the first end surface 3011 is in contact with the insulation The area of the medium 5 is located outside the raised portion 3011a; the area on the fourth end surface 3022 that contacts the insulating medium 5 is located outside the groove 3022a; the first proximal overlapping section 801b is located outside the groove 3022a; between the protruding portion 3011a and the groove 3022a.

所述远端电极对3a与所述近端电极对3b，可以分别通过一个独立的供电回路，电连接到所述脉冲电压发生器6；也可以共用一个供电回路，所述远端电极对3a与所述近端电极对3b串接到所述脉冲电压发生器6。The distal electrode pair 3a and the proximal electrode pair 3b can be electrically connected to the pulse voltage generator 6 through an independent power supply circuit; they can also share a power supply circuit, and the distal electrode pair 3a can be electrically connected to the pulse voltage generator 6 through an independent power supply circuit. The proximal electrode pair 3b is connected in series to the pulse voltage generator 6 .

如图15，在所述远端电极对3a与所述近端电极对3b分别通过一个独立的供电回路，电连接到所述脉冲电压发生器6的实施例中，连接在所述脉冲电压发生器6与所述远端电极对3a之间的所述导线还包括第二导线802；所述第二导线802包括第二近端重叠段，所述第二近端重叠段位于所述近端电极沿导管1轴向所在的区间内；所述第一导线801电连接在所述脉冲电压发生器6与所述远端电极对3a的所述第一电极301之间；所述第二导线802电连接在所述脉冲电压发生器6与所述远端电极对3a的所述第二电极302之间，所述远端电极对3a的所述第一电极301与所述第二电极302中，一个电连接所述脉冲电压发生器6的阳极，另一个电连接所述脉冲电压发生器6的阴极。As shown in Figure 15, in an embodiment in which the distal electrode pair 3a and the proximal electrode pair 3b are electrically connected to the pulse voltage generator 6 through an independent power supply circuit, the pulse voltage generator is connected to the The conductor between the device 6 and the distal electrode pair 3a also includes a second conductor 802; the second conductor 802 includes a second proximal overlapping section, and the second proximal overlapping section is located at the proximal end. The electrode is within the interval along the axial direction of the catheter 1; the first wire 801 is electrically connected between the pulse voltage generator 6 and the first electrode 301 of the distal electrode pair 3a; the second wire 802 is electrically connected between the pulse voltage generator 6 and the second electrode 302 of the distal electrode pair 3a. Among the first electrode 301 and the second electrode 302 of pair 3a, one is electrically connected to the anode of the pulse voltage generator 6, and the other is electrically connected to the cathode of the pulse voltage generator 6.

相应的，所述近端电极对3b的第一电极301和第二电极302，一个通过导线电连接所述脉冲电压发生器6的阳极，另一个通过导线电连接所述脉冲电压发生器6的阴极。Correspondingly, one of the first electrode 301 and the second electrode 302 of the proximal electrode pair 3b is electrically connected to the anode of the pulse voltage generator 6 through a wire, and the other is electrically connected to the anode of the pulse voltage generator 6 through a wire. cathode.

该实施例中，所述第一近端重叠段801b和所述第二近端重叠段排布的方式包括：In this embodiment, the arrangement of the first proximal overlapping section 801b and the second proximal overlapping section includes:

可选的，如图16和图17所示，所述第一近端重叠段801b设置在所述近端电极对3b的所述第一间隙303内；所述第二近端重叠段设置在所述近端电极对3b的所述第二间隙304内。该实施方式，使得所述近端电极对3b的所述第一端面3011与所述第四端面3022通过所述第一近端重叠段801b保持绝缘隔离，所述近端电极对3b的所述第二端面3012与所述第三端面3021通过所述第二近端重叠段保持绝缘隔离，设备的可靠性更高。Optionally, as shown in Figures 16 and 17, the first proximal overlapping section 801b is provided in the first gap 303 of the proximal electrode pair 3b; the second proximal overlapping section is provided in Within the second gap 304 of the proximal electrode pair 3b. In this embodiment, the first end surface 3011 and the fourth end surface 3022 of the proximal electrode pair 3b are kept insulated and isolated by the first proximal overlapping section 801b. The second end face 3012 and the third end face 3021 are insulated and separated by the second proximal overlapping section, so that the reliability of the device is higher.

可选的，所述第一近端重叠段801b及所述第二近端重叠段均设置在所述近端电极对3b的所述第一间隙303内；或者所述第一近端重叠段801b及所述第二近端重叠段均设置在所述近端电极对3b的所述第二间隙304内。该实施方式中，当所述近端电极对3b的所述第一端面3011与所述第四端面3022的距离相对较小，而所述近端电极对3b的所述第二端面3012与所述第三端面3021的距离相对较大时，可以首先根据所述近端电极对3b的所述第一间隙303和所述第二间隙304的空间：Optionally, the first proximal overlapping section 801b and the second proximal overlapping section are both arranged in the first gap 303 of the proximal electrode pair 3b; or the first proximal overlapping section 801b and the second proximal overlapping section are both disposed in the second gap 304 of the proximal electrode pair 3b. In this embodiment, when the distance between the first end surface 3011 of the proximal electrode pair 3b and the fourth end surface 3022 is relatively small, and the distance between the second end surface 3012 of the proximal electrode pair 3b and the fourth end surface 3022 of the proximal electrode pair 3b is relatively small, When the distance between the third end surfaces 3021 is relatively large, the space between the first gap 303 and the second gap 304 of the proximal electrode pair 3b can first be determined:

在一种情况下，所述近端电极对3b的所述第一间隙303尺寸过小，导致所述第一近端重叠段801b及所述第二近端重叠段均无法放入，则只能将所述第一近端重叠段801b及所述第二近端重叠段均设置在所述近端电极对3b的所述第二间隙304内；In one case, the size of the first gap 303 of the proximal electrode pair 3b is too small, causing the first proximal overlapping section 801b and the second proximal overlapping section to be unable to be placed, then only The first proximal overlapping section 801b and the second proximal overlapping section can both be disposed within the second gap 304 of the proximal electrode pair 3b;

在另一种情况下，所述近端电极对3b的所述第一间隙303尺寸可以同时放置所述第一近端重叠段801b及所述第二近端重叠段，则也可以选择将述第一近端重叠段801b及所述第二近端重叠段均设置在所述近端电极对3b的所述第一间隙303内，使得所述近端电极对3b的所述第一端面3011与所述第四端面3022通过所述第一近端重叠段801b保持绝缘隔离；而所述近端电极对3b的所述第二端面3012与所述第三端面3021的距离相对较大，可忽略所述近端电极对3b的所述第二端面3012与所述第三端面3021之间的绝缘状态变化。In another case, the size of the first gap 303 of the proximal electrode pair 3b can be used to place the first proximal overlapping section 801b and the second proximal overlapping section at the same time, then you can also choose to place the first proximal overlapping section 801b. The first proximal overlapping section 801b and the second proximal overlapping section are both disposed in the first gap 303 of the proximal electrode pair 3b, so that the first end surface 3011 of the proximal electrode pair 3b The distance between the second end surface 3012 and the third end surface 3021 of the proximal electrode pair 3b is relatively large, so that the distance between the second end surface 3012 and the third end surface 3021 of the proximal electrode pair 3b is relatively large. Ignore the change in the insulation state between the second end surface 3012 and the third end surface 3021 of the proximal electrode pair 3b.

上述实施例中，可选的，所述第一导线801电连接在所述远端电极对3a的所述第一电极301靠近所述脉冲电压发生器6一侧的轴向端面；所述第二导线802电连接在所述远端电极对3a的所述第二电极302靠近所述脉冲电压发生器6一侧的轴向端面；因此所述第一导线801及所述第二导线802与所述远端电极对3a并无轴向上的重叠区间，所述第一导线801及所述第二导线802均未经过所述远端电极对3a的第一间隙303和第二间隙304。 In the above embodiment, optionally, the first wire 801 is electrically connected to the axial end surface of the first electrode 301 of the distal electrode pair 3a close to the pulse voltage generator 6; Two wires 802 are electrically connected to the axial end surface of the second electrode 302 of the distal electrode pair 3a close to the pulse voltage generator 6; therefore, the first wire 801 and the second wire 802 are The distal electrode pair 3a has no overlapping section in the axial direction, and neither the first conductor 801 nor the second conductor 802 passes through the first gap 303 and the second gap 304 of the distal electrode pair 3a.

当所述远端电极对3a的第一间隙303或第二间隙304内未设置所述绝缘介质5时，考虑到所述远端电极对3a的所述第一电极301与所述第二电极302之间的绝缘可靠性，可选的，所述第一导线801电连接在远端电极对3a的所述第一电极301远离所述脉冲电压发生器6一侧的轴向端面，和/或，所述第二导线802电连接在远端电极对3a的所述第二电极302远离所述脉冲电压发生器6一侧的轴向端面。When the insulating medium 5 is not disposed in the first gap 303 or the second gap 304 of the distal electrode pair 3a, considering the first electrode 301 and the second electrode of the distal electrode pair 3a 302, optionally, the first wire 801 is electrically connected to the axial end surface of the first electrode 301 of the distal electrode pair 3a away from the pulse voltage generator 6, and/ Or, the second wire 802 is electrically connected to the axial end surface of the second electrode 302 of the distal electrode pair 3 a on the side away from the pulse voltage generator 6 .

可选的，所述第一导线801包括第一远端重叠段801a，所述第一远端重叠段801a位于所述远端电极对3a沿导管1轴向所在的区间内；所述第二导线802包括第二远端重叠段，所述第二远端重叠段位于所述远端电极对3a沿导管1轴向所在的区间内；Optionally, the first lead 801 includes a first distal overlapping section 801a, which is located in the interval where the distal electrode pair 3a is located along the axial direction of the catheter 1; the second distal overlapping section 801a The lead 802 includes a second distal overlapping section located in the interval where the distal electrode pair 3a is located along the axial direction of the catheter 1;

该实施例中，所述第一远端重叠段801a和所述第二远端重叠段排布的方式包括：In this embodiment, the arrangement of the first distal overlapping section 801a and the second distal overlapping section includes:

可选的，如图18所示，所述第一远端重叠段801a设置在所述远端电极对3a的所述第一间隙303内；所述第二远端重叠段设置在所述远端电极对3a的所述第二间隙304内。该实施方式，使得所述远端电极对3a的所述第一端面3011与所述第四端面3022通过所述第一远端重叠段801a保持绝缘隔离，所述远端电极对3a的所述第二端面3012与所述第三端面3021通过所述第二远端重叠段保持绝缘隔离，设备的可靠性更高。Optionally, as shown in Figure 18, the first distal overlapping section 801a is disposed in the first gap 303 of the distal electrode pair 3a; the second distal overlapping section is disposed in the distal electrode pair 3a. Within the second gap 304 of the terminal electrode pair 3a. In this embodiment, the first end surface 3011 and the fourth end surface 3022 of the distal electrode pair 3a are kept insulated and isolated by the first distal overlapping section 801a. The second end face 3012 and the third end face 3021 are insulated and separated by the second distal overlapping section, so that the reliability of the device is higher.

可选的，所述第一远端重叠段801a及所述第二远端重叠段均设置在所述远端电极对3a的所述第一间隙303内；或者所述第一远端重叠段801a及所述第二远端重叠段均设置在所述远端电极对3a的所述第二间隙304内。该实施方式中，当所述远端电极对3a的所述第一端面3011与所述第四端面3022的距离相对较小，而所述远端电极对3a的所述第二端面3012与所述第三端面3021的距离相对较大时，可以首先根据所述远端电极对3a的所述第一间隙303和所述第二间隙304的空间：Optionally, the first distal overlapping section 801a and the second distal overlapping section are both disposed within the first gap 303 of the distal electrode pair 3a; or the first distal overlapping section 801a and the second distal overlapping section are both disposed within the second gap 304 of the distal electrode pair 3a. In this embodiment, when the distance between the first end surface 3011 of the distal electrode pair 3a and the fourth end surface 3022 is relatively small, and the distance between the second end surface 3012 of the distal electrode pair 3a and the When the distance between the third end faces 3021 is relatively large, the space between the first gap 303 and the second gap 304 of the distal electrode pair 3a can first be determined:

在一种情况下，所述远端电极对3a的所述第一间隙303尺寸过小，导致所述第一远端重叠段801a及所述第二远端重叠段均无法放入，则只能将所述第一远端重叠段801a及所述第二远端重叠段均设置在所述远端电极对3a的所述第二间隙304内；In one case, the size of the first gap 303 of the distal electrode pair 3a is too small, causing the first distal overlapping section 801a and the second distal overlapping section to be unable to be placed, then only The first distal overlapping section 801a and the second distal overlapping section can both be disposed within the second gap 304 of the distal electrode pair 3a;

在另一种情况下，所述远端电极对3a的所述第一间隙303尺寸可以同时放置所述第一远端重叠段801a及所述第二远端重叠段，则也可以选择将述第一远端重叠段801a及所述第二远端重叠段均设置在所述远端电极对3a的所述第一间隙303内，使得所述远端电极对3a的所述第一端面3011与所述第四端面3022通过所述第一远端重叠段801a保持绝缘隔离；而所述远端电极对3a的所述第二端面3012与所述第三端面3021的距离相对较大，可忽略所述远端电极对3a的所述第二端面3012与所述第三端面3021之间的绝缘状态变化。In another case, the size of the first gap 303 of the distal electrode pair 3a can be used to place the first distal overlapping section 801a and the second distal overlapping section at the same time, then you can also choose to place the above-mentioned distal overlapping section. The first distal overlapping section 801a and the second distal overlapping section are both disposed in the first gap 303 of the distal electrode pair 3a, so that the first end surface 3011 of the distal electrode pair 3a The distance between the second end surface 3012 and the third end surface 3021 of the distal electrode pair 3a is relatively large, so that the distance between the second end surface 3012 and the third end surface 3021 of the distal electrode pair 3a is relatively large. Ignore the change in the insulation state between the second end surface 3012 and the third end surface 3021 of the distal electrode pair 3a.

所述远端电极对3a与所述近端电极对3b串接到所述脉冲电压发生器6的实施例中，连接在所述脉冲电压发生器6与所述近端电极对3b之间的所述导线包括第三导线803；所述近端电极对3b的所述第二电极302通过第三导线803电连接所述脉冲电压发生器6；所述近端电极对3b的所述第一电极301通过第四导线804电连接所述远端电极对3a的所述第二电极302；所述远端电极对3a的所述第一电极301通过所述第一导线801电连接所述脉冲电压发生器6。当所述脉冲电压发生器6的一极通过所述第三导线803施加脉冲电压到所述近端电极对3b的所述第二电极302时，所述近端电极对3b的所述第二电极302与所述第一电极301之间产生放电电弧，使得电流流过所述近端电极对3b；所述近端电极对3b的所述第一电极301通过第四导线804电连接所述远端电极对3a的所述第二电极302；所述远端电极对3a的所述第二电极302与所述第一电极301之间产生放电电弧，使得电流流过所述远端电极对3a；所述远端电极对3a的所述第一电极301通过所述第一导线801电连接所述脉冲电压发生器6的另一极。In the embodiment of the pulse voltage generator 6, the distal electrode pair 3a and the proximal electrode pair 3b are connected in series. The wires connected between the pulse voltage generator 6 and the proximal electrode pair 3b include a third wire 803; the second electrode 302 of the proximal electrode pair 3b is electrically connected through a third wire 803 The pulse voltage generator 6; the first electrode 301 of the proximal electrode pair 3b is electrically connected to the second electrode 302 of the distal electrode pair 3a through a fourth wire 804; the distal electrode pair The first electrode 301 of 3a is electrically connected to the pulse voltage generator 6 through the first wire 801. When one pole of the pulse voltage generator 6 applies a pulse voltage to the second electrode 302 of the proximal electrode pair 3b through the third wire 803, the second electrode 302 of the proximal electrode pair 3b A discharge arc is generated between the electrode 302 and the first electrode 301, causing current to flow through the proximal electrode pair 3b; the first electrode 301 of the proximal electrode pair 3b is electrically connected to the proximal electrode pair 3b through a fourth wire 804. The second electrode 302 of the distal electrode pair 3a; a discharge arc is generated between the second electrode 302 of the distal electrode pair 3a and the first electrode 301, causing current to flow through the distal electrode pair 3a; The first electrode 301 of the distal electrode pair 3a is electrically connected to the other pole of the pulse voltage generator 6 through the first wire 801.

在一个可选实施例中，如图19所示，所述第一近端重叠段801b设置在所述近端电极对3b的所述第一间隙303或所述第二间隙304内；所述第一导线801电连接在所述远端电极对3a的所述第一电极301靠近所述脉冲电压发生器6一侧的轴向端面；所述第三导线803电连接在所述近端电极对3b的所述第二电极302靠近所述脉冲电压发生器6一侧的轴向端面；所述第四导线804的一端电连接在所述近端电极对3b的所述第一电极301远离所述脉冲电压发生器6一侧的轴向端面，所述第四导线804的另一端电连接在所述远端电极对3a的所述第二电极302靠近所述脉冲电压发生器6一侧的轴向端面。因此所述第一导线801及所述第四导线804与所述远端电极对3a并无轴向上的重叠区间，所述第一导线801及所述第四导线804均未经过所述远端电极对3a的所述第一间隙303和所述第二间隙304，且所述第三导线803及所述第四导线804与所述近端电极对3b并无轴向上的重叠区间，所述第三导线803及所述第四导线804均未经过所述近端电极对3b的所述第一间隙303和所述第二间隙304。In an optional embodiment, as shown in Figure 19, the first proximal overlapping section 801b is disposed within the first gap 303 or the second gap 304 of the proximal electrode pair 3b; The first wire 801 is electrically connected to the axial end surface of the first electrode 301 of the distal electrode pair 3a close to the pulse voltage generator 6; the third wire 803 is electrically connected to the proximal electrode The second electrode 302 of pair 3b is close to the axial end surface of the pulse voltage generator 6 side; one end of the fourth wire 804 is electrically connected to the first electrode 301 of the proximal electrode pair 3b. The axial end surface of one side of the pulse voltage generator 6 and the other end of the fourth wire 804 are electrically connected to the side of the second electrode 302 of the distal electrode pair 3a close to the pulse voltage generator 6 axial end face. Therefore, there is no axial overlap between the first conductor 801 and the fourth conductor 804 and the distal electrode pair 3a, and neither the first conductor 801 nor the fourth conductor 804 passes through the distal electrode pair 3a. The first gap 303 and the second gap 304 of the terminal electrode pair 3a, and the third conductor 803 and the fourth conductor 804 have no axial overlapping interval with the proximal electrode pair 3b, Neither the third conductor 803 nor the fourth conductor 804 passes through the first gap 303 and the second gap 304 of the proximal electrode pair 3b.

当所述近端电极对3b的第一间隙303及第二间隙304内未设置所述绝缘介质5时，考虑到所述近端电极对3b的所述第一电极301与所述第二电极302之间的绝缘可靠性，需要所述近端电极对3b的所述第一间隙303与第二间隙304均通过导线绝缘隔离时，可选的：When the insulating medium 5 is not disposed in the first gap 303 and the second gap 304 of the proximal electrode pair 3b, considering that the first electrode 301 and the second electrode of the proximal electrode pair 3b 302, when the first gap 303 and the second gap 304 of the proximal electrode pair 3b need to be isolated by wire insulation, optional:

所述第三导线803电连接在近端电极对3b的所述第二电极302远离所述脉冲电压发生器6一侧的轴向端面，所述第三导线803包括第三近端重叠段，所述第三近端重叠段位于所述近端电极沿导管1轴向所在的区间内；所述第一近端重叠段801b设置在所述近端电极对3b的所述第一间隙303内；所述第三近端重叠段设置在所述近端电极对3b的所述第二间隙 304内；The third wire 803 is electrically connected to the axial end surface of the second electrode 302 of the proximal electrode pair 3b on the side away from the pulse voltage generator 6, and the third wire 803 includes a third proximal overlapping section, The third proximal overlapping section is located in the interval where the proximal electrode is located along the axial direction of the catheter 1; the first proximal overlapping section 801b is provided in the first gap 303 of the proximal electrode pair 3b ; The third proximal overlapping section is disposed in the second gap of the proximal electrode pair 3b Within 304;

或者，or,

如图20所示，所述第四导线804电连接在近端电极对3b的所述第一电极301靠近所述脉冲电压发生器6一侧的轴向端面，所述第四导线804包括第四近端重叠段804b，所述第四近端重叠段804b位于所述近端电极沿导管1轴向所在的区间内；As shown in Figure 20, the fourth wire 804 is electrically connected to the axial end surface of the first electrode 301 of the proximal electrode pair 3b close to the pulse voltage generator 6, and the fourth wire 804 includes a Four proximal overlapping sections 804b, the fourth proximal overlapping section 804b is located in the interval where the proximal electrode is located along the axial direction of the catheter 1;

所述第一近端重叠段801b设置在所述近端电极对3b的所述第一间隙303内；所述第四近端重叠段804b设置在所述近端电极对3b的所述第二间隙304内。The first proximal overlapping section 801b is disposed in the first gap 303 of the proximal electrode pair 3b; the fourth proximal overlapping section 804b is disposed in the second proximal electrode pair 3b. Within gap 304.

当所述远端电极对3a的第一间隙303或第二间隙304内未设置所述绝缘介质5时，考虑到所述远端电极对3a的所述第一电极301与所述第二电极302之间的绝缘可靠性，可选的，所述第一导线801电连接在远端电极对3a的所述第一电极301远离所述脉冲电压发生器6一侧的轴向端面，和/或，所述第四导线804电连接在远端电极对3a的所述第二电极302远离所述脉冲电压发生器6一侧的轴向端面。When the insulating medium 5 is not disposed in the first gap 303 or the second gap 304 of the distal electrode pair 3a, considering the first electrode 301 and the second electrode of the distal electrode pair 3a 302, optionally, the first wire 801 is electrically connected to the axial end surface of the first electrode 301 of the distal electrode pair 3a away from the pulse voltage generator 6, and/ Or, the fourth wire 804 is electrically connected to the axial end surface of the second electrode 302 of the distal electrode pair 3 a on the side away from the pulse voltage generator 6 .

可选的，如图20所示，所述第一导线801包括第一远端重叠段801a，所述第一远端重叠段801a位于所述远端电极对3a沿导管1轴向所在的区间内；所述第四导线804包括第四远端重叠段804a，所述第四远端重叠段804a位于所述远端电极对3a沿导管1轴向所在的区间内；Optionally, as shown in Figure 20, the first lead 801 includes a first distal overlapping section 801a, which is located in the interval where the distal electrode pair 3a is located along the axial direction of the catheter 1. Within; the fourth lead 804 includes a fourth distal overlapping section 804a, the fourth distal overlapping section 804a is located in the interval where the distal electrode pair 3a is located along the axial direction of the catheter 1;

该实施例中，所述第一远端重叠段801a和所述第四远端重叠段804a排布的方式包括：In this embodiment, the arrangement of the first distal overlapping section 801a and the fourth distal overlapping section 804a includes:

可选的，所述第一远端重叠段801a设置在所述远端电极对3a的所述第一间隙303内；所述第四远端重叠段804a设置在所述远端电极对3a的所述第二间隙304内。该实施方式，使得所述远端电极对3a的所述第一端面3011与所述第四端面3022通过所述第一远端重叠段801a保持绝缘隔离，所述远端电极对3a的所述第二端面3012与所述第三端面3021通过所述第四远端重叠段804a保持绝缘隔离，设备的可靠性更高。Optionally, the first distal overlapping section 801a is provided within the first gap 303 of the distal electrode pair 3a; the fourth distal overlapping section 804a is provided between the distal electrode pair 3a within the second gap 304. In this embodiment, the first end surface 3011 and the fourth end surface 3022 of the distal electrode pair 3a are kept insulated and isolated by the first distal overlapping section 801a. The second end face 3012 and the third end face 3021 are insulated and separated by the fourth distal overlapping section 804a, so that the reliability of the device is higher.

可选的，所述第一远端重叠段801a及所述第四远端重叠段804a均设置在所述远端电极对3a的所述第一间隙303内；或者所述第一远端重叠段801a及所述第四远端重叠段804a均设置在所述远端电极对3a的所述第二间隙304内。该实施方式中，当所述远端电极对3a的所述第一端面3011与所述第四端面3022的距离相对较小，而所述远端电极对3a的所述第二端面3012与所述第三端面3021的距离相对较大时，可以首先根据所述远端电极对3a的所述第一间隙303和所述第二间隙304的空间：Optionally, the first distal overlapping section 801a and the fourth distal overlapping section 804a are both disposed within the first gap 303 of the distal electrode pair 3a; or the first distal overlapping section The segment 801a and the fourth distal overlapping segment 804a are both disposed within the second gap 304 of the distal electrode pair 3a. In this embodiment, when the distance between the first end surface 3011 of the distal electrode pair 3a and the fourth end surface 3022 is relatively small, and the distance between the second end surface 3012 of the distal electrode pair 3a and the When the distance between the third end faces 3021 is relatively large, the space between the first gap 303 and the second gap 304 of the distal electrode pair 3a can first be determined:

在一种情况下，所述远端电极对3a的所述第一间隙303尺寸过小，导致所述第一远端重叠段801a及所述第四远端重叠段804a均无法放入，则只能将所述第一远端重叠段801a 及所述第四远端重叠段804a均设置在所述远端电极对3a的所述第二间隙304内；In one case, the size of the first gap 303 of the distal electrode pair 3a is too small, causing the first distal overlapping section 801a and the fourth distal overlapping section 804a to be unable to be placed, then Only the first distal overlapping segment 801a and the fourth distal overlapping section 804a are both disposed within the second gap 304 of the distal electrode pair 3a;

在另一种情况下，所述远端电极对3a的所述第一间隙303尺寸可以同时放置所述第一远端重叠段801a及所述第四远端重叠段804a，则也可以选择将述第一远端重叠段801a及所述第四远端重叠段804a均设置在所述远端电极对3a的所述第一间隙303内，使得所述远端电极对3a的所述第一端面3011与所述第四端面3022通过所述第一远端重叠段801a保持绝缘隔离；而所述远端电极对3a的所述第二端面3012与所述第三端面3021的距离相对较大，可忽略所述远端电极对3a的所述第二端面3012与所述第三端面3021之间的绝缘状态变化。In another case, the size of the first gap 303 of the distal electrode pair 3a can be used to place the first distal overlapping section 801a and the fourth distal overlapping section 804a at the same time, then you can also choose to place The first distal overlapping section 801a and the fourth distal overlapping section 804a are both disposed in the first gap 303 of the distal electrode pair 3a, so that the first distal overlapping section of the distal electrode pair 3a The end surface 3011 and the fourth end surface 3022 are insulated and separated by the first distal overlapping section 801a; and the distance between the second end surface 3012 and the third end surface 3021 of the distal electrode pair 3a is relatively large. , the change in the insulation state between the second end surface 3012 and the third end surface 3021 of the distal electrode pair 3a can be ignored.

本申请的实施例还提供了另一种冲击波球囊导管装置，包括The embodiment of the present application also provides another shock wave balloon catheter device, including

导管1；catheter 1;

密封围绕在所述导管1外周的球囊2；Seal the balloon 2 surrounding the periphery of the catheter 1;

设置在所述球囊2内的远端电极对3a和近端电极对3b；所述近端电极对3b位于所述脉冲电压发生器6与所述远端电极对3a之间；所述近端电极对3b包括第一电极301和第二电极302；The distal electrode pair 3a and the proximal electrode pair 3b are arranged in the balloon 2; the proximal electrode pair 3b is located between the pulse voltage generator 6 and the distal electrode pair 3a; the proximal electrode pair 3a The terminal electrode pair 3b includes a first electrode 301 and a second electrode 302;

导线；所述导线具有外绝缘层；所述远端电极对3a和所述近端电极对3b分别通过导线电连接脉冲电压发生器6；所述脉冲电压发生器6用于为所述远端电极对3a和所述近端电极提供脉冲电压；Wires; the wires have an outer insulating layer; the distal electrode pair 3a and the proximal electrode pair 3b are electrically connected to the pulse voltage generator 6 through wires respectively; the pulse voltage generator 6 is used to provide the distal The electrode pair 3a and the proximal electrode provide pulse voltage;

所述第一电极301与所述第二电极302沿所述导管1周向间隔布置；所述第一电极301包括位于所述导管1周向一端的第一端面3011，以及位于所述导管1周向另一端的第二端面3012；所述第二电极302包括位于所述导管1周向一端的第三端面3021，以及位于所述导管1周向另一端的第四端面3022；所述第一端面3011与所述第四端面3022相邻且限定形成第一间隙303；所述第二端面3012与所述第三端面3021相邻且限定形成第二间隙304；当所述脉冲电压发生器6在所述第一电极301与所述第二电极302之间施加脉冲电压时，所述第一电极301与所述第二电极302被配置为在所述第一间隙303与所述第二间隙304中的至少之一形成放电冲击波；The first electrode 301 and the second electrode 302 are arranged at intervals along the circumference of the catheter 1; the first electrode 301 includes a first end surface 3011 located at one circumferential end of the catheter 1, and a first end surface 3011 located at one circumferential end of the catheter 1. a second end surface 3012 at the other circumferential end; the second electrode 302 includes a third end surface 3021 located at one circumferential end of the conduit 1, and a fourth end surface 3022 located at the other circumferential end of the conduit 1; One end face 3011 is adjacent to the fourth end face 3022 and defines a first gap 303; the second end face 3012 is adjacent to the third end face 3021 and defines a second gap 304; when the pulse voltage generator 6. When a pulse voltage is applied between the first electrode 301 and the second electrode 302, the first electrode 301 and the second electrode 302 are configured to connect the first gap 303 and the second electrode 302. At least one of the gaps 304 forms a discharge shock wave;

所述导线包括连接在所述脉冲电压发生器6与所述远端电极对3a之间的第一导线；所述第一导线包括第一近端重叠段；所述第一近端重叠段位于所述近端电极沿导管1轴向所在的区间内；所述第一近端重叠段设置在所述近端电极对3b的所述第一间隙303或所述第二间隙304内。The wire includes a first wire connected between the pulse voltage generator 6 and the distal electrode pair 3a; the first wire includes a first proximal overlapping section; the first proximal overlapping section is located at The proximal electrode is within the interval along the axial direction of the catheter 1; the first proximal overlapping section is provided in the first gap 303 or the second gap 304 of the proximal electrode pair 3b.

本实施例不对所述远端电极对3a的构造做任何限制。This embodiment does not place any restrictions on the structure of the distal electrode pair 3a.

需要说明的是，在本说明书的描述中，术语“第一”、“第二”等仅用于描述目的和区别类似的对象，两者之间并不存在先后顺序，也不能理解为指示或暗示相对重要性。此外，在本说明书的描述中，除非另有说明，“多个”的含义是两个或两个以上。It should be noted that in the description of this specification, the terms "first", "second", etc. are only used for descriptive purposes and to distinguish between categories. Similar objects, there is no sequence between them, nor can they be understood as indicating or implying relative importance. Furthermore, in the description of this specification, "plurality" means two or more unless otherwise specified.

上述实施例只为说明本申请的技术构思及特点，其目的在于让熟悉此项技术的人士能够了解本申请的内容并据以实施，并不能以此限制本申请的保护范围。凡根据本申请精神实质所作的等效变化或修饰，都应涵盖在本申请的保护范围之内。The above embodiments are only for illustrating the technical concepts and features of the present application. Their purpose is to enable those familiar with this technology to understand the contents of the present application and implement them accordingly. This does not limit the scope of protection of the present application. Any equivalent changes or modifications made based on the spirit and essence of this application shall be included in the protection scope of this application.

应该理解，以上描述是为了进行图示说明而不是为了进行限制。通过阅读上述描述，在所提供的示例之外的许多实施方式和许多应用对本领域技术人员来说都将是显而易见的。出于全面之目的，所有文章和参考包括专利申请和公告的公开都通过参考结合在本文中。 It should be understood that the above description is for purposes of illustration rather than limitation. Many embodiments and many applications beyond the examples provided will be apparent to those skilled in the art from reading the above description. For purposes of comprehensiveness, the disclosures of all articles and references, including patent applications and publications, are hereby incorporated by reference.

Claims

一种冲击波球囊导管装置，包括导管、密封围绕在导管外周的球囊和设置在球囊内的至少一个电极对；每个所述电极对包括第一电极和第二电极，其特征在于：所述第一电极与所述第二电极沿所述导管周向间隔布置；所述第一电极包括位于所述导管周向一端的第一端面，以及位于所述导管周向另一端的第二端面；所述第二电极包括位于所述导管周向一端的第三端面，以及位于所述导管周向另一端的第四端面；所述第一端面与所述第四端面相邻且限定形成第一间隙；所述第二端面与所述第三端面相邻且限定形成第二间隙；当在所述第一电极与所述第二电极之间施加电压时，所述第一电极与所述第二电极被配置为在所述第一间隙与所述第二间隙中的至少之一形成放电冲击波。A shock wave balloon catheter device, including a catheter, a balloon sealed around the periphery of the catheter, and at least one electrode pair disposed in the balloon; each of the electrode pairs includes a first electrode and a second electrode, characterized by: The first electrode and the second electrode are arranged at intervals along the circumference of the catheter; the first electrode includes a first end surface located at one circumferential end of the catheter, and a second end surface located at the other circumferential end of the catheter. End surface; the second electrode includes a third end surface located at one circumferential end of the conduit, and a fourth end surface located at the other circumferential end of the conduit; the first end surface is adjacent to the fourth end surface and defines a a first gap; the second end surface is adjacent to the third end surface and defines a second gap; when a voltage is applied between the first electrode and the second electrode, the first electrode and the The second electrode is configured to form a discharge shock wave in at least one of the first gap and the second gap.
如权利要求1所述的装置，其特征在于：还包括定位件；所述定位件用于保持所述电极对与所述导管之间的相对位置。The device according to claim 1, further comprising a positioning member; the positioning member is used to maintain the relative position between the electrode pair and the catheter.
如权利要求2所述的装置，其特征在于：所述定位件包括设置在所述电极对外周的绝缘材质的定位护套。The device according to claim 2, wherein the positioning member includes a positioning sheath of insulating material disposed around the outer periphery of the electrode pair.
如权利要求3所述的装置，其特征在于：所述定位护套通过热塑成型。The device of claim 3, wherein the positioning sheath is thermoformed.
如权利要求3所述的装置，其特征在于：所述电极对所在位置的横截面外轮廓的外径小于1.2mm。The device according to claim 3, wherein the outer diameter of the cross-sectional outer contour of the position of the electrode pair is less than 1.2 mm.
如权利要求3所述的装置，其特征在于：所述定位护套设置有第一放电孔；所述第一放电孔位于所述第一间隙与所述第二间隙中可形成放电冲击波的间隙的外侧。The device according to claim 3, characterized in that: the positioning sheath is provided with a first discharge hole; the first discharge hole is located in a gap between the first gap and the second gap that can form a discharge shock wave. outside.
如权利要求3所述的装置，其特征在于：所述电极对的数量为至少2个，且至少2个所述电极对之间沿所述导管的轴向间隔布置；1个所述定位护套覆盖在至少2个所述电极对外侧。The device according to claim 3, characterized in that: the number of the electrode pairs is at least 2, and at least 2 electrode pairs are arranged at intervals along the axial direction of the catheter; 1 positioning guard The sleeve covers the outside of at least two of the electrode pairs.
如权利要求1所述的装置，其特征在于：所述电极对的数量为至少2个，且相邻的两个所述电极对中，其中一个所述电极对的可形成放电冲击波的间隙与另一个所述电极对的可形成放电冲击波的间隙沿导管周向间隔布置。 The device according to claim 1, characterized in that: the number of the electrode pairs is at least 2, and among the two adjacent electrode pairs, one of the electrode pairs has a gap that can form a discharge shock wave. The gaps of the other pair of electrodes that can form discharge shock waves are arranged at intervals along the circumference of the catheter.
如权利要求1所述的装置，其特征在于：所述第一电极的内壁与所述第二电极的内壁分别贴合在所述导管的外壁上。The device of claim 1, wherein the inner wall of the first electrode and the inner wall of the second electrode are respectively attached to the outer wall of the catheter.
如权利要求1所述的装置，其特征在于：所述导管的管体外壁上开设有沿周向延伸的安装槽；所述电极对设置在所述安装槽内。The device according to claim 1, characterized in that: the outer wall of the tube of the conduit is provided with an installation groove extending in the circumferential direction; and the electrode pair is arranged in the installation groove.
如权利要求2所述的装置，其特征在于：所述导管的管体上开设有沿周向间隔布置的第一管体内腔和第二管体内腔；所述第一电极嵌入在所述第一管体内腔，所述第二电极嵌入在所述第二管体内腔；所述第一管体内腔和所述第二管体内腔构成所述定位件；所述导管的外壁上开设有第二放电孔；所述第二放电孔位于所述第一间隙与所述第二间隙中可形成放电冲击波的间隙处。The device according to claim 2, characterized in that: the tube body of the catheter is provided with a first tube inner lumen and a second tube inner lumen arranged at circumferential intervals; and the first electrode is embedded in the first tube inner lumen. A tube inner cavity, the second electrode is embedded in the second tube inner cavity; the first tube inner cavity and the second tube inner cavity constitute the positioning member; the outer wall of the catheter is provided with a third Two discharge holes; the second discharge hole is located at a gap between the first gap and the second gap where a discharge shock wave can be formed.
如权利要求1所述的装置，其特征在于：所述第一间隙与所述第二间隙中，可形成放电冲击波的间隙处设置有绝缘介质。The device according to claim 1, wherein an insulating medium is provided at the gap between the first gap and the second gap that can form a discharge shock wave.
如权利要求12所述的装置，其特征在于：所述第一电极与所述第二电极被配置为在所述第一间隙形成放电冲击波；所述绝缘介质与所述第一端面相接，且两者的接触面积小于所述第一端面的表面积；所述绝缘介质与所述第四端面相接，且两者的接触面积小于所述第四端面的表面积。The device of claim 12, wherein the first electrode and the second electrode are configured to form a discharge shock wave in the first gap; the insulating medium is connected to the first end surface, And the contact area between the two is smaller than the surface area of the first end surface; the insulating medium is in contact with the fourth end surface, and the contact area between the two is smaller than the surface area of the fourth end surface.
如权利要求13所述的装置，其特征在于：所述绝缘介质沿导管径向的宽度小于第一端面的宽度，所述绝缘介质沿导管径向的宽度小于所述第四端面的宽度；且所述绝缘介质位于靠近所述导管外壁的一侧。The device according to claim 13, wherein the width of the insulating medium along the radial direction of the conduit is less than the width of the first end face, and the width of the insulating medium along the radial direction of the conduit is less than the width of the fourth end face. ; And the insulating medium is located on the side close to the outer wall of the conduit.
如权利要求13所述的装置，其特征在于：所述绝缘介质沿导管轴向的长度小于所述第一端面的长度，所述绝缘介质沿导管轴向的长度小于所述第四端面的长度。The device according to claim 13, wherein the length of the insulating medium along the axial direction of the conduit is less than the length of the first end surface, and the length of the insulating medium along the axial direction of the conduit is less than the length of the fourth end surface. .
如权利要求13所述的装置，其特征在于：所述绝缘介质包括第一绝缘条和第二绝缘条；其中，所述第一绝缘条与所述第二绝缘条沿导管径向间隔排布，或者所述第一绝缘条与所述第二绝缘条沿导管轴向间隔排布。The device according to claim 13, characterized in that: the insulating medium includes a first insulating strip and a second insulating strip; wherein the first insulating strip and the second insulating strip are arranged at intervals along the radial direction of the conduit. cloth, or the first insulation The strips and the second insulating strips are arranged at intervals along the axial direction of the conduit.
如权利要求12所述的装置，其特征在于：所述第一端面上设置有凸起部；所述第四端面的相应位置上设置有凹槽；所述第一端面上接触所述绝缘介质的区域位于所述凸起部之外；所述第四端面上接触所述绝缘介质的区域位于所述凹槽之外。The device according to claim 12, characterized in that: a protrusion is provided on the first end surface; a groove is provided at a corresponding position of the fourth end surface; and the first end surface is in contact with the insulating medium. The area of the fourth end face that contacts the insulating medium is located outside of the groove.
如权利要求1所述的装置，其特征在于：还包括脉冲电压发生器和至少一个供电回路；所述脉冲电压发生器用于通过供电回路为所述电极对提供脉冲电压；所述电极对与所述供电回路一一对应；每个所述电极对通过一个对应的所述供电回路连接至所述脉冲电压发生器。The device according to claim 1, further comprising: a pulse voltage generator and at least one power supply loop; the pulse voltage generator is used to provide pulse voltage to the electrode pair through the power supply loop; the electrode pair is connected to the The power supply circuits correspond one to one; each electrode pair is connected to the pulse voltage generator through a corresponding power supply circuit.
如权利要求1所述的装置，其特征在于：所述导管的外侧套装有显影环；所述显影环位于球囊内，且所述显影环位于所述电极对之外的区域。 The device according to claim 1, characterized in that: a developing ring is set on the outside of the catheter; the developing ring is located in the balloon, and the developing ring is located in an area outside the electrode pair.