CN104740748A - Guiding catheter - Google Patents

Guiding catheter Download PDF

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Publication number
CN104740748A
CN104740748A CN201310749764.6A CN201310749764A CN104740748A CN 104740748 A CN104740748 A CN 104740748A CN 201310749764 A CN201310749764 A CN 201310749764A CN 104740748 A CN104740748 A CN 104740748A
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CN
China
Prior art keywords
liquid chamber
guide catheter
catheter
outer
balloon
Prior art date
Application number
CN201310749764.6A
Other languages
Chinese (zh)
Inventor
黄慧华
张滢涛
金巧蓉
谢志永
Original Assignee
微创神通医疗科技(上海)有限公司
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Priority to CN201310749764.6A priority Critical patent/CN104740748A/en
Publication of CN104740748A publication Critical patent/CN104740748A/en

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Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00Catheters; Hollow probes
    • A61M25/0043Catheters; Hollow probes characterised by structural features
    • A61M25/0045Catheters; Hollow probes characterised by structural features multi-layered, e.g. coated
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00Catheters; Hollow probes
    • A61M25/10Balloon catheters
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00Catheters; Hollow probes
    • A61M25/0021Catheters; Hollow probes characterised by the form of the tubing
    • A61M25/0023Catheters; Hollow probes characterised by the form of the tubing by the form of the lumen, e.g. cross-section, variable diameter
    • A61M25/0026Multi-lumen catheters with stationary elements
    • A61M25/0032Multi-lumen catheters with stationary elements characterized by at least one unconventionally shaped lumen, e.g. polygons, ellipsoids, wedges or shapes comprising concave and convex parts
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00Catheters; Hollow probes
    • A61M25/0043Catheters; Hollow probes characterised by structural features
    • A61M25/005Catheters; Hollow probes characterised by structural features with embedded materials for reinforcement, e.g. wires, coils, braids
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00Catheters; Hollow probes
    • A61M25/01Introducing, guiding, advancing, emplacing or holding catheters
    • A61M25/06Body-piercing guide needles or the like
    • A61M25/0662Guide tubes

Abstract

The invention provides a guiding catheter. The guiding catheter comprises an outer catheter body, an inner catheter body, one or more liquid flowing cavities and a balloon communicated with the liquid flowing cavities, wherein the liquid flowing cavities are distributed in the circumference of the thickness of the wall of the outer catheter body, and the distance between two farthest points, in the circumferential direction of the catheter, of a section of each liquid flowing cavity is larger than that between two farthest points, in the radial direction of the catheter, of the section of each liquid flowing cavity. The guiding catheter is capable of bearing high negative pressure and short in balloon withdrawal time.

Description

一种导引导管 One kind of guide catheter

技术领域 FIELD

[0001] 本发明涉及医疗器械技术领域,特别地涉及一种导引导管。 [0001] The present invention relates to the technical field of medical devices, and particularly to a guide catheter.

背景技术 Background technique

[0002] 导引导管是一种专门设计的鞘管,可以提供通道方向。 [0002] The guide catheter is a specially designed sheath, may be provided in the channel direction. 它常用于输送各种介入器械到达靶定目标,为其提供支持和保护。 It is used to transport all kinds of interventional devices reach the targeted goal, to provide support and protection. 现代技术飞速发展,为了满足临床需求,各种形状、各种功能的导引导管被开发,如带球囊的导引导管等。 The rapid development of modern technology, in order to meet clinical needs, the guiding catheter shapes, various functions have been developed, such as a guide catheter with a balloon.

[0003] 对于球囊导引导管来说,除了需要能够承受一定的负压以免发生导管塌陷,球囊回抽时间和导引导管头端的柔软性也至关重要。 [0003] For guiding the balloon catheter, it is also important in addition to be able to withstand a certain negative pressure to avoid collapse of the flexibility of the catheter, the balloon Withdrawing time and the guide catheter tip occurs. 目前市面上的产品,由于球囊在回抽的过程中,导管发生塌陷,导致球囊回抽时间较长,增加了血栓形成和远端血管缺血的风险;由于导管头端较硬,无法进入更远的血管,导致一些支架或栓塞手术的失败。 The products currently on the market, since the balloon during Withdrawing the catheter collapse occurs, resulting in a longer time Withdrawing the balloon, increased risk of thrombosis and ischemia of the distal vessel; hard since the catheter tip, not farther into the blood vessels, leading to some of the stent or embolization failure.

发明内容 SUMMARY

[0004] 有鉴于此,本发明提供一种导引导管,不仅能够承受较大的负压,且具有较小的球囊回抽时间和柔软的头端。 [0004] Accordingly, the present invention provides a guide catheter, not only able to withstand a large negative pressure, and having a smaller balloon Withdrawing time and soft tip.

[0005] 为实现上述目的,本发明提供如下技术方案: [0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] 一种导引导管,包括外管、内管、通液腔以及与所述通液腔连通的球囊,一个或多个所述通液腔分布在所述外管壁厚的圆周上,所述通液腔的截面在所述导管圆周向上最远两点的距离大于其径向上最远两点的距离。 [0006] A guide catheter comprising an outer tube, an inner tube, through the balloon, and the liquid chamber through the liquid communication chamber, one or more of said liquid chamber through said outer tube in the circumferential distribution of wall thickness on the liquid chamber through the duct cross section in the circumferential direction two points furthest radial distance greater than the farthest two points.

[0007] 可选地,所述通液腔截面的边部分地与所述内管截面的边重合或贴合。 [0007] Alternatively, the cross-section through the liquid chamber side portion of the inner tube with a cross-sectional side coincident or bonded.

[0008] 可选地,所述通液腔截面的形状为月牙形、椭圆形、骨头形、腰果形或腰子形。 [0008] Alternatively, the cross-sectional shape of the cavity through the liquid to crescent-shaped, oval-shaped, bone-shaped, cashew-shaped or kidney-shaped.

[0009] 可选地,所述通液腔的壁上贴覆有光滑的膜。 [0009] Alternatively, the liquid chamber through the wall is pasted with a smooth film.

[0010] 可选地,所述内管具有三层结构,其中外层材料为聚氨酯;中间层由金属丝缠绕和/或编织制成,所述金属丝为以下材料中的一种,或几种的组合:不锈钢304V、镍钛合金、钨;内层为聚碳氟化合物、聚乙烯、聚丙烯或聚酰胺中的一种或多种的共聚物。 [0010] Alternatively, the inner tube having a three-layer structure, wherein the outer layer is a polyurethane material; an intermediate layer made of a metal wire winding and / or weaving, the wire is one of the following materials, or several combination thereof: 304V stainless steel, nitinol, tungsten; inner layer is a polymeric fluorocarbon, polyethylene, polypropylene or polyamide or more copolymers.

[0011] 可选地,所述外管的材料为以下材料中的一种,或几种的组合:聚酰胺、聚氨酯、尼龙、高密度聚乙烯、嵌段聚醚酰胺弹性体;且所述外管的材料的硬度从近端到远端逐级变小。 [0011] Alternatively, the material of the outer tube is one of the following materials, or several in combination: polyamide, polyurethane, nylon, high density polyethylene, block polyether amide elastomer; and the hardness of the material of the outer tube is progressively smaller from proximal to distal.

[0012] 可选地,所述球囊的远端与所述导引导管的远端之间构成所述导引导管的头端,所述头端由所述内管的内层和外层的延伸段形成。 [0012] Alternatively, constituting the head end of the guide catheter distal end between the balloon and the distal end of the guiding catheter, the inner tube within the head end is an outer layer and the extension form.

[0013] 可选地,所述头端的长度为3mm-100mm。 [0013] Alternatively, the length of the head end is 3mm-100mm.

[0014] 根据本发明的技术方案,导引导管是非同轴式,一个或多个通液腔在外管壁的壁厚中形成非同轴的腔体,通液腔的大小和形状可以根据球囊的所需膨胀时间和回抽时间来设计。 [0014] According to the present invention, a non-coaxial guide catheter, the one or more through the thickness of the outer wall of the liquid chamber size and shape of non-coaxial cavity, through the liquid chamber may be formed in accordance with the ball bag inflation time required to design and Withdrawing time. 这种导管的内管所具有的三层结构以及其中的编织和/或缠绕金属丝内层使得导管的内管能够参与导管的支撑,提高了导管承受负压的能力。 Such a catheter inner tube has a three-layer structure and wherein the woven and / or a wire wrap inner layer of the inner tube so that the catheter can support the participation of the catheter, the catheter improves the ability to withstand the negative pressure. 通液腔的截面的形状能够尽可能地利用外管的壁厚所在的空间,以提供较大的流量,并且对导管承受负压的能力的影响较小。 Less impact on the cross-sectional shape of the liquid chamber can be utilized as much as possible the space where the wall thickness of the outer tube, to provide a larger flow rate, and subjected to the negative pressure conduit ability.

附图说明 BRIEF DESCRIPTION

[0015] 附图用于更好地理解本发明,不构成对本发明的不当限定。 [0015] The accompanying drawings for a better understanding of the present invention, without unduly limiting the present invention. 其中: among them:

[0016] 图1是根据本发明实施例的导引导管的外形的示意图; [0016] FIG. 1 is a schematic outline of the guiding catheter according to an embodiment of the present invention;

[0017] 图2是根据本发明实施例的导引导管的剖面的示意图; [0017] FIG. 2 is a schematic cross-sectional view of the guiding catheter according to an embodiment of the present invention;

[0018] 图3A至图3E是图2的AA截面的几种可选型式的示意图; [0018] FIGS. 3A to 3E is a schematic view of several alternative types of section AA of Figure 2;

[0019] 图4和图5是根据本发明实施例的内层管的弹簧的结构的示意图; [0019] FIG. 4 and FIG. 5 is a schematic view of a spring inner tube according to an embodiment of the present invention;

[0020] 图6是根据本发明实施例的导引导管的头端结构的示意图。 [0020] FIG. 6 is a diagram showing a configuration of the head end of the guide catheter embodiment of the present invention.

具体实施方式 Detailed ways

[0021] 以下结合附图对本发明的示范性实施例做出说明,其中包括本发明实施例的各种细节以助于理解,应当将它们认为仅仅是示范性的。 [0021] DESCRIPTION OF THE DRAWINGS made below of exemplary embodiments of the present invention, including various details of the embodiments to assist in understanding the present invention, they should be regarded as merely exemplary. 因此,本领域普通技术人员应当认识至IJ,可以对这里描述的实施例做出各种改变和修改,而不会背离本发明的范围和精神。 Accordingly, those of ordinary skill in the art to be appreciated IJ, changes may be made to the embodiments and various modifications described herein, without departing from the scope and spirit of the invention. 同样,为了清楚和简明,以下的描述中省略了对公知功能和结构的描述。 Also, for clarity and conciseness, the following description is omitted the description of known functions and Structure.

[0022] 图1至图6中,各个序号标示为:1_连接器,2-输送导管体,3-可扩展球囊,4-扩散应力管,5-通液腔,6-导引腔,21-外管,22-内管,11-连接器侧口,12-连接器主孔,221-内管的外层,222内管的中间层,223-内管的内层,2221-第一弹簧圈,2222-第二弹簧圈,31-连接区域,32-连接区域,7-显影点,8-头端,9-胶水。 In [0022] Figures 1 to 6, the respective number is marked: 1_ connector, 2- delivery catheter body, a balloon expandable 3-, 4- stress control tube diffusion, through the liquid chamber 5-, 6- guide space , an outer tube 21, inner tube 22-, 11- port-side connector, the connector main bore 12-, 221- within the outer tube, the intermediate layer 222, the inner tube within the 223-, 2221- a first coil, a second coil 2222-, 31- connection region, the connection region 32-, 7- developing point, the head end 8-, 9- glue.

[0023] 如图1、图2所示,本发明实施例中的导引导管包括可扩张球囊3、输送导管体2、扩散应力管4和连接器1,所述输送导管体2包括外管21、内管22、通液腔5和导引腔6,其中,通液腔5是由内表面低摩擦系数材料而成的,导引腔6是由内管22的内腔构成;可扩张球囊3的近端与外管21的远端密封相连,可扩张球囊3的远端与内管22的远端密封相连;连接器I与输送导管体2的近端相连,扩散应力管4的近端与连接器I的远端相连。 [0023] FIG 1 and FIG 2, the embodiment of the present invention comprises an expandable balloon guiding catheter 3, the delivery catheter body 2, the diffuser 4 and the stress control tube connector 1, the body 2 comprises an outer delivery catheter tube 21, inner tube 22, the liquid chamber 5 through 6 and the guide chamber, wherein the liquid chamber 5 through the guide chamber 6 is constituted by the inner surface of the low friction material is made from the lumen of the inner tube 22; a the proximal end of the dilatation balloon 3 and the outer tube 21 is connected to the distal end of the seal, the distal end of the expandable distal end of the inner tube 22 is connected to the sealing balloon 3; I is connected to the proximal connector delivery catheter body 2, the expansion of stress the distal tube is connected to the proximal end of the connector 4 I. 位于球囊3部位的内管22的管壁上嵌设有显影点7,显影点7用于手术过程中导管的准确定位。 The balloon 3 is located on the wall portion of the inner tube 22 is fitted with the developing point 7, point 7 for developing accurate positioning of the catheter during the procedure.

[0024] 参考图2、图3A至图3E,本实施例中的导引导管是非同轴式,通液腔5位于外管21的壁厚内,因此与内管22和外管21为非同轴的腔体,通液腔5的大小和形状可以根据球囊的所需膨胀时间和回抽时间来设计。 [0024] Referring to FIG 2, FIGS. 3A to 3E, the guide catheter of the present embodiment is non-coaxial embodiment, through the liquid chamber 5 is located inside the wall of the outer tube 21, and thus the inner tube 22 and outer tube 21 is non- coaxial cavity size and shape of the liquid through the chamber 5 may be designed according to the desired expansion of the balloon and the time Withdrawing time. 这种非同轴式的通液腔使得导管的内管能够参与导管的支撑,提高了导管承受负压的能力。 This extraordinary axis of the liquid chamber through the inner tube of the catheter to participate in supporting the catheter, the catheter improves the ability to withstand the negative pressure. 通液腔5的壁的一部分可以是内管的外壁。 Part of the wall of the liquid chamber 5 through the outer wall of the inner tube may be. 通液腔5的壁上也可贴覆有光滑的膜,这样可降低通液腔5的壁的摩擦系数,避免球囊扩张介质过多地粘附在通液腔中而导致的导管回撤困难,有助于减少球囊回抽的时间,降低血栓栓塞性并发症和远端缺血的风险。 Through the wall of the liquid chamber 5 may also be coated with a smooth film attached, which can reduce the coefficient of friction on the walls of the liquid chamber 5, to avoid excessive adhesion of the balloon through the medium of the liquid chamber caused conduit retracement difficulties, help to reduce the balloon Withdrawing time, reduce the risk of thrombotic and embolic complications of distal ischemia.

[0025] 通液腔也可以设计成其他形状,为了使球囊的膨胀时间和回抽时间尽可能地短,需使通液腔有尽可能大的流量,但导管整体需要有较细的外径。 [0025] through the liquid chamber can also be designed into other shapes, in order to make the balloon inflation time and Withdrawing time as short as possible is required so that the liquid chamber through the greatest possible flow rate, but requires a smaller overall outer catheter path. 为此在本实施例中,通液腔的截面在导管圆周向上最远两点的距离大于其径向上最远两点的距离,如图3A至图3E中的通液腔51至55所示,作为示例,图中示出了呈月牙形的通液腔截面(如图3A、3E中的通液腔51、55)以及类似于骨头形的通液腔截面(如图3C中的通液腔53)。 Examples for this distance, the cross section of the catheter through the liquid chamber farthest upwardly circumferential distance between two points on the radially larger than the farthest two points in the present embodiment, as shown in FIG. 3A to 3E through FIG liquid chamber 51-55 as an example, there is shown a crescent-shaped section and the liquid chamber through the liquid chamber through the cross-sectional shape similar to the bone (3A, 51, 55 through the liquid chamber in FIG. 3E) (FIG. 3C liquid flowing cavity 53). 通液腔的截面也可以是椭圆形,如图3B中的通液腔52所示。 Cross-section through the liquid chamber may be elliptical, as shown in FIG. 3B liquid chamber 52 through FIG. 通液腔还可以是类似于腰子的形状;形状也可以更长,即类似于腰果的形状。 Through the liquid chamber may also be similar to the shape of a kidney; shape may be longer, i.e. a shape similar to cashews. 上述的这些形状都能够尽可能地利用外管21的壁厚所在的空间,以提供较大的流量,并且对导管承受负压的能力的影响较小。 These shapes are described above can be utilized as much room as the wall thickness of the outer tube 21 is located, to provide a larger flow rate, and less influence on the ability of the catheter to withstand negative pressure. 另外通液腔也可以是多个,如上述各图中所示。 Further through a plurality of liquid chamber may be, as shown in the above figures.

[0026] 通液腔的壁可以直接由外管材料构成;或者其中一部分是内管的外壁,此时通液腔的壁与内管的壁重合。 Wall [0026] through the liquid chamber may be formed directly from the outer tube material; or wherein a portion of the outer wall of the inner tube, in which case the inner walls of the liquid chamber through the tube coincide. 通液腔也可以具有专门的壁,可以与内管的外壁贴合或分离,即通液腔的壁的材料不同于外管以及内管,可采用聚四氟乙烯(PTFE),也可以是氟化乙丙烯(FEP)0 Through the liquid chamber wall may also have a dedicated, may be bonded to the inner tube or the outer wall of the separation, i.e. liquid chamber through the material of the wall of the outer tube and the inner tube differs, may be employed polytetrafluoroethylene (PTFE), may be fluorinated ethylene propylene (FEP) 0

[0027] 通液腔5与连接器I的侧孔11相通,扩张介质通过连接器的侧孔11注入通液腔5中。 [0027] side of the through hole 5 and the liquid chamber 11 in communication I connector, the expansion medium is injected through the liquid chamber 5 through the side hole 11 of the connector. 外管22是由三段不同硬度的管材形成,主要分为相对硬度近端体部、中间过渡段和相对柔软并连接于近端部分的远端体部。 The outer tube 22 is formed of three sections of pipe of different hardness, it is divided into a proximal portion relative hardness, a transition section and a relatively flexible body portion and connected to the distal end of the proximal portion. 外管22可以采用如下材料:聚酰胺、聚氨酯、尼龙、高密度聚乙烯、或者嵌段聚醚酰胺弹性体(PEBAX)组合而成,硬度为78D-20D。 Outer tube material 22 may be adopted: polyamide, polyurethane, nylon, high density polyethylene, or polyether block amide elastomer (PEBAX,) a combination of a hardness of 78D-20D.

[0028] 如图4和图5所示,本发明实施例的导引导管中的内管22包括内层223、外层221和中间层222 (弹簧圈加强),另外还可以添加显影点7。 [0028] FIGS. 4 and 5, the guide catheter embodiment of the inner tube 22 in the embodiment comprises an inner layer 223 to the invention, the outer layer 221 and the intermediate layer 222 (reinforcing coil), additional points may be added to the developing 7 . 内管的内层223比内管的外层221的厚度小或者大致相同;其中,内层223的构成材料可为:PTFE、FEP和高密度聚乙烯中的一种,或者两种组合而成,提高导引腔6的表面光滑性,从而使导丝、取栓器等更加顺畅的到达病灶部位。 Outer layer inner layer 223 of the inner tube smaller than the thickness of the inner tube 221 is substantially the same as, or; wherein the material constituting the inner layer 223 can be: PTFE, FEP, and one kind of high-density polyethylene, or a combination of two kinds, improve the surface smoothness of the guide chamber 6, so that the guide wire, or the like embolectomy smoother reach the lesion site. 内管22的内径优选值为1.2mm-2.1_。 The inner diameter of the inner pipe 22 is preferably 1.2mm-2.1_. 其中,外层221的构成材料可为:尼龙、硅橡胶、聚氨酯、聚酰胺系列或者嵌段聚醚酰胺弹性体(PEBAX)中的一种或多种组合而成,硬度为25D-55D。 Wherein the constituent material of the outer layer 221 can be: nylon, silicone rubber, polyurethane, a polyamide or a polyether block amide elastomer (PEBAX,) of one or more of a combination of a hardness of 25D-55D. 其中,中间层222是由两根不同的金属丝弹簧圈绕丝方向不同组成的,可根据产品所需的强度,来设置绕丝的密度。 Wherein, the intermediate layer 222 is composed of two different wire coils around the wire direction different compositions, depending on the desired strength of the product, to set the density of the wire windings. 弹簧圈的材料可以是不锈钢304v、镍钛合金或鹤等金属材料,直径为0.lmm-0.3mm之间,并且可以采用圆丝或扁丝。 The material may be stainless steel coil 304V and the like, nickel-titanium alloy or a metal material crane, having a diameter of between 0.lmm-0.3mm, and may employ a round wire or flat wire.

[0029] 球囊3的远端与内管22的远端可通过粘合剂密封连接,形成连接区域32,此可作为头端,或者离头端有一段距离,如图6所示,导管头端8是球囊前端81 (即靠近导管远端82的一端)与导管远端82之间的部分,由内管22的内层223和外层221的延伸段形成。 [0029] The distal end of the inner tube 22 and the distal end of the balloon 3 may be connected by an adhesive sealing, the connection region 32 is formed, this can be used as a head end or some distance from the head-end, shown in Figure 6, the conduit 8 is a distal tip of the balloon 81 (i.e., near the distal end of the conduit 82) between the portion 82 and the distal end of the catheter, is formed by the inner layer 223 and outer layer 221 of the extension tube 22. 头端8的长度为:3mm-100mm。 The length of the head end is 8: 3mm-100mm.

[0030] 此外,本发明实施例的导引导管的整体表面或者至少球囊3和头端8部分通过例如涂覆、喷射等方法形成由亲水性材料构成的涂层,有助于降低表面摩擦,使导管整体进入血管通行时更加顺畅,提高导管的操作性能。 [0030] Further, the entire surface of the guide catheter embodiment of the present invention, or at least 8 of the balloon 3 and a head end portion forming a coating made of a hydrophilic material by a method such as coating, injection or the like, helps to reduce the surface friction, so that the entire catheter into the blood vessel passage more smoothly, improve the operational performance of the catheter. 上述亲水涂层材料可以是:聚乙烯吡咯烷酮(PVP)、透明质酸钠、聚氨酯等。 The hydrophilic coating material may be: polyvinylpyrrolidone (PVP), sodium hyaluronate, and polyurethane. 以下举几个本发明的具体实施例。 Here are some specific embodiments of the present invention.

[0031] 实施例1 [0031] Example 1

[0032] 本实施例中采用3个显影点,分别设置在头端和球囊中间,材料采用银。 [0032] The present embodiment uses three developing points are provided at the head end and the middle of the balloon, a silver material. 外管材料为PEBAX,从近端到远端的硬度逐级变小,分别为78D,55D,35D。 PEBAX, outer tube material, the hardness of the distal end from the proximal end to progressively smaller, respectively, 78D, 55D, 35D. 内管采用的三层编制材料,外层材料为聚氨酯,中间层由不锈钢绕丝而成,丝宽0.2mm,内层为PTFE。 Preparation of three-layer material used in the inner tube, the outer layer material is a polyurethane, the intermediate layer is made of a stainless steel wire wound, wire width 0.2mm, the inner layer is PTFE. 内管内径为3mm。 The inner diameter of 3mm. 通液腔5的截面采用月牙形。 Cross-section through the liquid chamber 5 using a crescent-shaped. 导管的头端设计长度为3mm。 Length of the catheter tip design of 3mm. 导管整体连接完成后,导管表面涂敷亲水涂层,亲水材料选用:透明质酸钠。 After completion integrally connecting conduit, the catheter surface coating a hydrophilic coating, a hydrophilic material selection: sodium hyaluronate.

[0033] 实施例2 [0033] Example 2

[0034] 本实施例中采用2个显影点,分别设置在头端和球囊中间,材料采用钼铱合金。 [0034] In the present embodiment, the developing using two points respectively disposed intermediate the head end and the balloon, molybdenum iridium alloy materials. 外管材料为PEBAX,从近端到远端的硬度逐级变小,分别为72D,63D,40D。 PEBAX, outer tube material, the hardness of the distal end from the proximal end to progressively smaller, respectively, 72D, 63D, 40D. 内管采用三层编制材料,外层材料为聚氨酯,中间层由不锈钢绕丝而成,丝宽0.15mm,内层为FEP。 Preparation of three-layer material of the inner tube, the outer layer material is a polyurethane, the intermediate layer is made of a stainless steel wire wound, wire width 0.15mm, the inner layer of FEP. 内管内径为2mm,通液腔54采用双通道月牙形。 The inner diameter of 2mm, the liquid chamber 54 through the dual-channel crescent. 导管头端设计长度为10mm。 Catheter tip design length 10mm. 导管整体连接完成后,导管表面涂敷亲水涂层,亲水材料选用聚乙烯吡咯烷酮(PVP)。 After completion integrally connecting conduit, the catheter surface coating a hydrophilic coating, a hydrophilic material selection polyvinylpyrrolidone (PVP).

[0035] 实施例3 [0035] Example 3

[0036] 本实施例中采用两个显影点,分别设置在头端和球囊中间,材料采用钼铱合金。 [0036] The present embodiment uses two developing points respectively disposed intermediate the head end and the balloon, molybdenum iridium alloy materials. 外管材料为PEBAX,从近端到远端的硬度逐级变小,分别为72D,55D,25D。 PEBAX, outer tube material, the hardness of the distal end from the proximal end to progressively smaller, respectively, 72D, 55D, 25D. 内管采用三层编制材料,外层材料为PEBAX,中间层由镍钛合金绕丝而成,丝宽0.15mm,内层为氟树脂(EFEP),内管内径为1mm。 Preparation of three-layer material of the inner tube, the outer layer material is PEBAX,, the intermediate layer is made of nitinol wire winding, wire width of 0.15mm, the inner layer is a fluorine resin (EFEP), the inner diameter of 1mm. 通液腔56采用三通道骨头形。 Liquid chamber 56 through a three-channel-boning. 导管头端设计长度为15mm。 Catheter tip design length 15mm. 导管整体连接完成后,导管表面涂敷亲水涂层,亲水材料选用聚氨酯。 After completion integrally connecting conduit, the catheter surface coating a hydrophilic coating, a hydrophilic polyurethane material selection.

[0037] 根据本发明实施例的技术方案,导引导管是非同轴式,一个或多个通液腔在外管壁的壁厚中形成非同轴的腔体,通液腔的大小和形状可以根据球囊的所需膨胀时间和回抽时间来设计。 [0037] According to the embodiment of the present invention, the guide catheter is non-coaxial, non-coaxial cavity, through the liquid chamber size and shape can be one or more through the thickness of the outer wall of the liquid chamber is formed designed according to the desired expansion of the balloon and the time Withdrawing time. 这种导管的内管所具有的三层结构以及其中的编织和/或缠绕金属丝内层使得导管的内管能够参与导管的支撑,提高了导管承受负压的能力。 Such a catheter inner tube has a three-layer structure and wherein the woven and / or a wire wrap inner layer of the inner tube so that the catheter can support the participation of the catheter, the catheter improves the ability to withstand the negative pressure. 通液腔的截面的形状能够尽可能地利用外管的壁厚所在的空间,以提供较大的流量,并且对导管承受负压的能力的影响较小。 Less impact on the cross-sectional shape of the liquid chamber can be utilized as much as possible the space where the wall thickness of the outer tube, to provide a larger flow rate, and subjected to the negative pressure conduit ability.

[0038] 上述具体实施方式,并不构成对本发明保护范围的限制。 [0038] The specific embodiments do not limit the scope of the present invention. 本领域技术人员应该明白的是,取决于设计要求和其他因素,可以发生各种各样的修改、组合、子组合和替代。 Those skilled in the art would understand that, depending on design requirements and other factors that can occur various modifications, combinations, sub-combinations and alternatives. 任何在本发明的精神和原则之内所作的修改、等同替换和改进等,均应包含在本发明保护范围之内。 Any modifications within the spirit and principle of the present invention, equivalent substitutions and improvements should be included within the scope of the present invention.

Claims (8)

1.一种导引导管,包括外管、内管、通液腔以及与所述通液腔连通的球囊,其特征在于,一个或多个所述通液腔分布在所述外管壁厚的圆周上,所述通液腔的截面在所述导管圆周向上最远两点的距离大于其径向上最远两点的距离。 A guide catheter comprising an outer tube, an inner tube, the balloon through the liquid chamber and liquid chamber communicating with the through, characterized in that one or more of said liquid chamber through said outer wall are distributed thick on a circumference of a cross-section through the liquid chamber farthest upwardly in the duct circumferential distance between two points on the radial distance greater than the farthest points.
2.根据权利要求1所述的导引导管,其特征在于,所述通液腔截面的边部分地与所述内管截面的边重合或贴合。 The guide catheter according to claim 1, wherein said liquid chamber through a cross-sectional side portion of the inner tube with a cross-sectional side coincident or bonded.
3.根据权利要求1所述的导引导管,其特征在于,所述通液腔截面的形状为月牙形、椭圆形、骨头形、腰果形或腰子形。 3. The guide catheter according to claim 1, characterized in that the cross-sectional shape of the cavity of the liquid through the crescent-shaped, oval-shaped, bone-shaped, cashew-shaped or kidney-shaped.
4.根据权利要求1所述的导引导管,其特征在于,所述通液腔的壁上贴覆有光滑的膜。 The guide catheter according to claim 1, wherein said liquid chamber through the wall is pasted with a smooth film.
5.根据权利要求1至4中任一项所述的导引导管,其特征在于,所述内管具有三层结构,其中外层材料为聚氨酯;中间层由金属丝缠绕和/或编织制成,所述金属丝为以下材料中的一种,或几种的组合:不锈钢304V、镍钛合金、钨;内层为聚碳氟化合物、聚乙烯、聚丙烯或聚酰胺中的一种或多种的共聚物。 1-4 according guide catheter as claimed in any one of the preceding claims, characterized in that said inner tube has a three-layer structure, wherein the outer layer is a polyurethane material; an intermediate layer of a metal wire winding and / or weaving, Ltd. into, the wire is one of the following materials or a combination of several kinds: 304V stainless steel, nitinol, tungsten; inner layer is a polymeric fluorocarbon compound, polyethylene, polypropylene or polyamide or more copolymers.
6.根据权利要求1至4中任一项所述的导引导管,其特征在于,所述外管的材料为以下材料中的一种,或几种的组合:聚酰胺、聚氨酯、尼龙、高密度聚乙烯、嵌段聚醚酰胺弹性体;且所述外管的材料的硬度从近端到远端逐级变小。 The guiding catheter 1 to 4 as claimed in any one of the preceding claims, characterized in that the material of the outer tube is one of the following materials, or a combination of several of: polyamide, polyurethane, nylon, high density polyethylene, block polyether amide elastomer; and hardness of the material of the outer tube is progressively smaller from proximal to distal.
7.根据权利要求1所述的导引导管,其特征在于,所述球囊的远端与所述导引导管的远端之间构成所述导引导管的头端,所述头端由所述内管的内层和外层的延伸段形成。 The guide catheter according to claim 1, wherein the configuration of the head end of the guide catheter distal end between the balloon and the distal end of the guiding catheter, the first end is the extension of the inner and outer layers forming the inner tube.
8.根据权利要求7所述的导引导管,其特征在于,所述头端的长度为3mm-100mm。 8. The guide catheter according to claim 7, wherein the length of the head end is 3mm-100mm.
CN201310749764.6A 2013-12-31 2013-12-31 Guiding catheter CN104740748A (en)

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