CN107773333A - 用于编织支架的膨胀环 - Google Patents
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Abstract
本发明公开了用于编织支架的膨胀环。本发明提供了一种编织支架系统,所述编织支架系统包括附接至管腔的内部表面和外部表面上的膨胀环。所述环的框架可赋予所述管腔向外膨胀的径向力,所述框架包括在连接件处和在与所述连接件相对的第一相交部和第二相交部处接合的多个细长构件。夹具可从所述相交部延伸,并且能够操作以可滑动地将所述框架固定至所述管腔的所述内表面和所述外表面上。
Description
技术领域
本公开整体涉及治疗患者脉管系统的某些缺损,更具体地讲涉及使编织支架膨胀至患者脉管系统中的治疗部位。
背景技术
支架可理解为可插入血管中以在血管内提供开放路径的管状加强件。支架已被广泛用于心脏动脉阻塞的血管内血管成形术治疗,在治疗过程中,支架可在血管成形术之后插入以防止动脉再狭窄。支架常常通过使用递送装置来展开,这些递送装置使得支架打开以达到增强动脉壁的目的,并在动脉中提供畅通路径,从而防止再狭窄。
然而,神经脉管的脆弱和非直线本质限制了此类支架在例如修复神经脉管缺损的手术中的适应性。此外,已知的递送方法在脉管阻塞手术中,尤其是在治疗微小脉管诸如存在于大脑中的那些时的用处较小。因此,需要可与神经脉管缺损的血管闭塞治疗技术配合使用的支架,该支架在神经脉管缺损附近提供选择性的增强。同样需要能够降低对血管造成创伤或破裂风险的支架。下述各个实施方案正是针对这些和其它考虑事项而提出的。
发明内容
在一些方面,本公开涉及一种用于递送到血管中的编织支架系统。这种系统可包括具有管腔的支架主体,该支架主体由多个编织构件形成,其中在该多个编织构件之间形成空隙。膨胀环可以机械方式连接至支架主体管腔的内表面和外表面,并且能够操作以打开膨胀环并锚固支架主体,以用于接纳分流器。框架可包括形状记忆构型,其直径大于支架主体的有效膨胀量。
在一个示例性实施方案中,框架能够操作以赋予支架主体向外膨胀的径向力。框架可包括在连接件处和在与连接件相对的第一相交部和第二相交部处接合的多个细长构件。至少一个夹具可从相交部延伸,并且能够操作以可滑动地将框架固定至管腔的内表面和外表面上。夹具可包括多个外支柱构件,该多个外支柱构件被对齐并从第一相交部延伸并在与第一相交部相对的端部处接合。外支柱构件也能够沿管腔的内表面滑动。多个中心支柱构件可被设置在外支柱构件之间形成的间隙中,该多个中心支柱构件同样被对齐并从第二相交部延伸。中心支柱构件能够沿管腔的外表面滑动,并且可在与外支柱构件连通的孔中在与第二相交部相对的端部处附接。
在一个示例性实施方案中,中心支柱构件可与外支柱构件间隔预定距离。激光切割夹持模式可在外支柱构件与中心支柱构件之间形成。中心支柱构件和外支柱构件也可通过焊接、焊合或粘合在一起而在孔处附接。然而,夹具未受到很大限制,相反中心支柱构件能够沿管腔的外表面滑动并能够操作以通过限定在中心支柱构件和第二相交部之间的阻力元件朝向管腔(例如,向内)偏压。阻力元件可为弹簧、中心支柱构件和/或外支柱构件的偏压或弓形构型,以朝向管腔偏压,从而根据需要固定夹具与管腔。任选的是,框架的多个细长构件可弯成弓形,使得框架抵抗压缩。细长构件也能够围绕连接件扭卷预定量。多个细长构件中的至少一对细长构件可成形为V形、U形或椭圆曲线。
在其它实施方案中,膨胀环的形状记忆构型可包括金属合金管结构,诸如激光切割的镍钛合金。
在其它示例性实施方案中,支架主体可包括近侧端部、远侧端部和设置在两者间的中心部分。第一膨胀环可设置在支架主体的远侧端部和近侧端部上或附近,其中多个细长构件的连接件在相应远侧端部或近侧端部处或附近接合。也可包括以机械方式连接至支架主体管腔的内表面和外表面的第二膨胀环。第二膨胀环可具有包括形状记忆构型的框架,其直径大于支架主体的有效膨胀量,并且第二膨胀环能够操作以打开并锚固支架主体,以用于接纳分流器。第二膨胀环的框架可类似地包括在连接件处和在与连接件相对的第一相交部和第二相交部处接合的多个细长构件。至少一个夹具可包括在从相交部延伸并且能够操作以可滑动地将框架固定至管腔的内表面和外表面上的第二膨胀环中。
同样设想了一种将编织支架主体展开至脉管中的方法。该方法包括将多个膨胀环与编织支架主体的管腔进行装配,编织支架主体的管腔由多个编织构件形成,其中在该多个编织构件之间形成空隙,并将每个膨胀环与编织支架主体管腔的内表面和外表面选择性地附接,每个膨胀环赋予编织支架主体向外膨胀的径向力,从而保持编织支架主体的管腔处于打开位置。每个膨胀环可具有在连接件处和在与连接件相对的第一相交部和第二相交部处接合的多个细长构件;并且至少一个夹具从相交部延伸并能够操作以将框架固定至管腔的内表面和外表面上;将夹具的多个外支柱构件可滑动地附接至管腔的内表面,每个外支柱构件被对齐并从第一相交部延伸,并且在与第一相交部相对的端部处接合;将夹具的多个中心支柱构件可滑动地附接至管腔的外表面,每个中心支柱构件设置在外支柱构件之间形成的间隙中,中心支柱构件被对齐并从第二相交部延伸。
该方法还可包括在与支柱构件连通的孔中,在与第二相交部和第一相交部相对的端部处将中心支柱构件和外支柱构件附接在一起;使每个膨胀环形成具有金属合金管结构的形状记忆构型;通过在夹具的第一相交部和第二相交部上或周围并入偏压元件,将中心支柱构件和外支柱构件偏压在一起;将外支柱构件和中心支柱构件间隔预定距离;以及/或者在外支柱构件和中心支柱构件之间的孔处形成外接入点。
在查看结合附图描述的下列具体实施方式之后,本公开的其它方面和特征结构对本领域的普通技术人员来说将会显而易见。
附图说明
现在将参考附图进行说明,附图不一定按比例绘制。
图1示出了在管状编织支架主体的第一端部和第二端部处装配的两个本发明公开的膨胀环的一个实施方案的侧平面视图。
图2示出了在管状编织支架主体的第一端部处装配的图1膨胀环中的一个膨胀环的近距离侧平面视图。
图3是图2的平面A-A的近距离视图,其示出了与管状编织支架主体进行装配的膨胀环的某些特征结构。
图4是当与示出其内腔的管状编织支架主体进行装配时的示例性膨胀环的正向平面图。
图5是一种将示例性编织支架主体展开至脉管中的示例性方法的示意性概述。
具体实施方式
虽然在本文中详细阐述了本发明所公开的技术的示例性实施方案,但应当理解也可设想其它实施方案。因此,本发明所公开的技术不旨在将其范围局限于以下说明中所述或附图中所示部件的构造和布置的详细说明。本发明所公开的技术能够具有其它实施方案,或能够以各种方式实践或实施。
还必须注意的是,除非上下文清楚地指明,否则在本说明书和所附权利要求中所用的单数形式“一个”、“一种”和“所述”包括复数指代物。“包含”或“含有”或“包括”是指至少命名的化合物、元素、颗粒或方法步骤存在于组合物或制品或方法中,但不排除存在其它化合物、材料、颗粒、方法步骤,即使其它此类化合物、材料、颗粒、方法步骤具有与命名的那些相同的功能。
在描述示例性实施方案时,为清楚起见将采用一些术语。每个术语旨在涵盖如本领域的技术人员所理解的其最广泛的意义,并包括所有以类似方式实施以实现相似目的的技术等同物。另外应当理解,提及方法的一个或多个步骤并不排除在那些明确确定的步骤之间存在另外方法步骤或插入的方法步骤。在不脱离本发明所公开技术的范围的情况下,方法的各步骤可以与本文所述那些不同的顺序来执行。类似地,还应当理解,提及装置或系统中的一个或多个部件并不排除在那些明确确定的部件之间存在另外的部件或插入的部件。
如本文所述,“受治疗者”或“患者”的脉管系统可为人或任意动物的脉管系统。应当理解,动物可为多种任何适用类型,包括但不限于哺乳动物、兽医动物、牲畜动物或宠物类动物等。例如,动物可为专门选择为具有类似于人类的某些特征的实验室动物(例如,大鼠、狗、猪、猴等)。应当理解,受治疗者可为例如任何适用的人类患者。
如本文所述,“操作者”可包括医生、外科医生或任何其它个体或与将编织支架主体递送至受治疗者的脉管系统相关的递送器械。
应当理解,“自膨胀”支架是如下支架:其中特定支架在穿过递送装置诸如,护套、微导管等露出时完全展开。在这方面,当自膨胀编织支架在相应递送装置外面不受限制地露出时,其应当膨胀并在脉管系统中展开。然而,由于径向力和摩擦,编织支架主体展开和在展开之后重新捕获是困难的。
编织支架可由多个细长构件(例如,金属丝、聚合物纤维或材料线)形成,这些构件在治疗神经脉管缺损的过程中可能非常有用。然而,当这类编织构件用来在支架主体的管腔中自膨胀时,已知激活初始膨胀端的方式很难使其充分、牢靠并完全地打开以使得初始膨胀端可用作锚定点。此外,众所周知编织支架还具有高的内摩擦力,该内摩擦力抵抗自膨胀编织支架在展开至打开状态时的固有径向膨胀力。具体地讲,相对较高的内摩擦力可使得很难打开支架的初始膨胀端,这导致在锚定和展开支架时存在缺陷。对于通过使用递送护套、微导管等递送至期望脉管位置的编织支架尤其如此,因为支架主体在闭合状态(例如,压缩或卷曲)下通常具有编织构件与递送护套或微导管之间的摩擦力。
在实施过程中,编织支架可通过下列方式递送至特定脉管:抵靠着编织支架的近侧端部推进钝面,使编织支架轴向压缩并径向膨胀。这种在递送护套或微导管内的膨胀可导致增加的法向力施加到递送护套、微导管等的内表面,从而也增加了由编织支架引起的摩擦力。
膨胀环已与编织支架配合使用以解决这些或其它问题。然而,考虑到尺寸和应用,由记忆结构(例如,金属合金)形成的环可能很难制造。这是因为相应环必须置于支架的内腔内,所以环才有助于向外展开支架。可能很难将膨胀环附接到支架内部,因为对支架与膨胀环之间的附接区的触及受到限制。具体地讲,操作者从支架的内腔触及膨胀环可能比从编织支架外部触及膨胀环更难。这类环也可提供内表面,编织支架递送线上的隆起部可与该内表面接合。
这些问题的已知解决方案取决于诸如材料、尺寸、单元设计、内摩擦力和终端用户可靠、快速和充分地打开编织支架进行的额外操作等因素。继而,放置编织支架是否成功很大程度上依赖于终端用户递送的精度,这不必要地增加了对患者造成伤害的风险。此外,可能很难在递送和/或展开之后重新捕获这类自膨胀编织支架。
解决这些问题的一种尝试包括使细线穿过编织支架和金属合金膨胀环形成回路,然后将这两个部件系在一起。然而,这种方法并不理想,因为必须将细线加入系统中。如果该线在患者的植入物中断开,则也可引发栓塞并发症。
本文所公开的膨胀环1在与编织支架主体12和形成组件10进行装配时,解决了本领域的这些和其它问题。在一个示例性实施方案中,组件10允许操作者将由形状记忆结构(例如,金属合金诸如镍钛合金[NiTi],也称为镍钛诺)构造而成的环1置于主体12的内腔20内,同时仍保持环1的附接区设置在主体12外部。环1可被设计成有利于打开和瞄定主体12,以帮助操作者准确轻松地放置分流器。优选的是,环1可经激光切割成形状记忆构型(例如,金属合金管材,诸如镍钛诺),其直径大于编织支架主体的有效膨胀量。
在下面的说明书中,参考了构成说明书的一部分的附图,并且通过举例说明的方式示出了具体的实施方案或示例。在参考附图时,这些图中类似的数字表示类似的元件。转到图1和图2,其中示出了本文所公开的环1和对应主体12的侧平面视图。图1和图2的主体12可由多个细长构件22形成,这些构件被编织或以其它方式布置以形成多个空隙24。构件22可由两根或更多根金属丝、聚合物纤维或材料线形成。环1可由一个或多个细长构件28和30构造而成,这些细长构件在第一相交部46和第二相交部36处互连并一起形成能够向主体12的管腔20的内壁和/或外壁施加一个或多个累加径向力的环1的框架。如图所示将一个或多个环1与主体12进行装配致使在脉管系统内递送主体12相对容易,这样很可靠并且对终端用户造成损伤的风险降低。
就这一点而言,可选择性地定位和布置环1以便快速打开和/或保持主体12处于打开位置,而不必焊接、焊合、粘合或以其它方式将环1连接至主体12本身。环1可装配在主体12的第一端部58处,并且环1也可装配在主体12的相对的第二端部56处。应当理解,任何数目的环1可与主体12包括在端部56和58中仅一个端部处以及在主体12的端部56和58之间的任何数目的位置处进行装配。
图2是在端部56处装配的图1的示例性环1的特写。如在该图中可见,将环1与主体12进行装配提高了在主体12的端部56、相对端部58和/或限定在每个端部56和58之间的中心部分处的向外延伸径向膨胀力。环1可包括一个或多个与第一细长构件28和第二细长构件30互连的支承夹具17,这些支承夹具共同引起环1自身完全与主体12的管腔20锚固。夹具17通过与主体12的编织细长构件22交织以机械方式固定每个环与主体12,如下文更具体地论述。转到图3,该图是图2的平面A-A的近距离视图,其更加清楚地示出了与空隙24和编织细长构件22交织的夹具17。优选的是,环1的夹具17可为具有夹子模式的“纸夹”型环,是通过中心支柱构件32和外支柱构件34进入金属合金管的一个端部中而形成的。
如此前可在图1至图2中看出,第一细长构件28可在第二相交部46处与第二细长构件30接合。第二相交部46也可在相应端部56, 58或两者间主体12的任何部分处附接到主体12,或者可被取向成偏压到或抵靠主体12的内腔20。如在图3中可见,每个构件28和30在与相交部46相对的相交部36和37处连接至夹具17或与夹具连通。具体地讲,支柱构件34在相应相交部36处从构件28或30延伸,而支柱构件32在相应相交部37处从构件28或30延伸。如在图中可见,夹具17可包括两个细长的对齐构件34,这两个构件远离相应第一相交部36的相应端部56或58朝向连接器端部40延伸并在连接器端部处接合。夹具17也可包括两个彼此对齐的构件32,其长度和/或厚度相对小于构件34,每个构件32被设置在由构件34形成的间隙内部并与构件34对齐。在每个构件32之间也可形成间隙,线22的一个或多个编织对26可穿过该间隙。每个构件32也可以是细长的,并远离相应相交部37朝向连接器端部40延伸,并在连接器端部处通过一种或多种焊料、焊接连接件、化学粘合剂等与一个或多个孔38接合。
构件32和34的夹子模式可经激光切割成环1的金属合金管。然而,环1未受到很大限制,构件32和34的夹子模式可根据需要通过任何其它制造技术(包括3-d打印、CNC加工、车床加工、增材制造等)形成到金属合金管的一个端部中。构件32和34一起使操作者能够以类似于在一张纸上滑动纸夹的方式将环1滑动穿过编织支架主体12的一个或多个空隙24。在这方面,构件32可滑动地在主体12的线22上和/或其外部插入,而构件34可滑动地在主体12的线22内部插入。然后构件32和34可在一个或多个孔38或主体12的开放空间内部被焊接、焊合、粘合或以其它方式连接在一起,以将环1固定至主体12。例如,图2至图3示出了在一个示例性实施方案中在第一端部56处与环1进行装配的本文所论述的主体12。构件34还提供了能够操作以有助于当向下卷曲到主体12中时递送系统10的实心、稳定表面,诸如微导管。另外,可用相交部37的阻力元件(例如弹簧或弓形构型)偏压或以其它方式操作构件32和34使其彼此抵靠,以致构件32和34自然地朝向彼此枢转。在该实施方案中,构件32和34可在或可不在孔38处连接。构件32可进行热处理,使得其可以凸起而高于外支柱构件34预定距离。在这方面,凸起构件32可使操作者在装配期间更容易通过空隙24放置构件32和34,因为夹具与编织支架线之间存在更大分离。
如在图中可见,当在图1至图4中观察到构件28和30在相交部36、37和46处彼此一体形成时,环1未受到很大限制并且构件28和30可通过紧固件(包括带、螺栓、夹钳、连接件、木钉、挂钩、门闩、钥匙等)可移除地彼此附接。构件28和30也可彼此附着或焊接形成一个或多个相交部36、37和46。另外,如果在具体实施方式中使用一个或多个紧固件,则紧固件可以可移除地连接或焊接、焊合和/或卷曲在其上。紧固件和/或构件28和30可由射线不可透金属诸如铂或钽形成,或可由非射线不可透金属诸如不锈钢形成。
通过将夹具17添加至环1,每个环1能够与主体12交织并可操作地附接至主体12的内外两部分上,而无需通过焊接、焊合或通过化学粘合剂永久或刚性附接至主体12自身。一旦构件32和34有效地与主体12进行装配,编织构件22就也可独立地从环1移动,这消除了永久或刚性附接可能会对主体12在与膨胀环进行装配时展开造成的不利影响。相交部46也可包括可旋转的和/或可扭卷的连接件,使得当主体12和环1在使用时环1能够弯曲预定量。
图4是当与主体12进行装配时示例性环1的正向平面图,并且相对于处于未压缩状态的主体12的管腔20示出了夹具17和对应相交部46中的每个相交部。本文所公开的环1可根据需要或偏好所要求按需与任何数目的夹具17一起使用。应当理解,环1可为能够弯曲预定量的压缩元件。在这方面,环1可在压缩构型(在脉管系统内展开之前)以及展开构型(其中管腔20的直径大于压缩构型)之间移动。细长构件28和/或30也可包括以预定抗压缩阻力弯成弓形的弯曲部分或拱形部分。应当理解,环1中的每对构件28和30可具有相同或不同的阻力,使得环1对特定脉管系统具体实施可具有针对性。另外,环1的构件28和30可被成形为具有锐角和/或斜角的V形形状,如图1至图3所示。然而,环1未受到很大限制,并且构件28和30可被成形为“U”形、椭圆形,而非V形,在接合部分处大致弯曲、成环或弯绕。
本文所公开的环1和对应系统有助于通过利用在构件32与34之间的孔38处形成的外接入点以及利用经由构件34和对应构件28和30沿主体12的内表面的连接部来制造使用起来容易又安全的编织支架。
环1及其组成特征结构可由超弹性材料例如镍钛诺形成,也可由非超弹性材料例如弹簧钢或MP35N形成,所述MP35N为按重量计35%镍、35%钴、20%铬和10%钼的合金。每个环1的构件28和30也可由形状记忆位置处于打开状态的形状记忆材料形成。
转到图5,该图为展开一个或多个任何本文所公开的具有主体20管腔20的环1的方法100。方法100可包括步骤110至140。步骤110可包括将一个或多个环1与主体20的管腔20进行装配。步骤120可包括将每个环1与管腔20的内表面和外表面选择性地附接,使得每个环1可赋予主体12向外膨胀的径向力,从而保持管腔20处于打开位置。步骤130可包括将夹具17的外构件34可滑动地附接至管腔20的内表面,每个外支柱构件34被对齐并从第一相交部36延伸,并在与第一相交部相对的端部(例如,一个或多个孔38)处连接。步骤140可包括将夹具17的构件32可滑动地附接至管腔20的外表面,每个构件32被设置在构件34与构件32之间形成的间隙5中、对齐并从第二相交部37延伸。
方法100也可包括其它步骤,诸如将构件32和34在一个或多个孔38中在与相交部36,37相对的端部处附接在一起,将构件34压接到管腔20的外表面中,使每个环1形成具有金属合金管结构的形状记忆构型,通过在夹具17的相交部36, 37上或周围并入偏压元件将元件32, 34偏压在一起,将元件32, 34间隔预定距离,以及/或者在构件32, 34之间的一个或多个孔38处形成外接入点。
特定构型、材料选择以及各个元件的尺寸和形状可根据具体设计规格或根据本公开技术原理构建的系统或方法的约束要求而改变。这类改变旨在涵盖在本发明所公开的技术的范围内。本发明所公开的实施方案因此被认为在所有方面仅是示例性的而非限制性的。因此从举例说明和描述了本公开的具体形式的前文中显而易见的是,在不脱离本公开的实质和范围的情况下可以进行各种修改,并且所有在其等同物的含义和范围内的改变都旨在涵盖在其中。
Claims (19)
1.一种编织支架系统,包括:
具有管腔的支架主体,所述支架主体由多个编织构件形成,其中在所述多个编织构件之间形成空隙;
膨胀环,所述膨胀环以机械方式连接至所述支架主体的所述管腔的内表面和外表面,所述膨胀环具有包括形状记忆构型的框架,其直径大于所述支架主体的有效膨胀量,
所述框架,其赋予所述支架主体向外膨胀的径向力,所述框架包括在连接件处和在与所述连接件相对的第一相交部和第二相交部处接合的多个细长构件;和
至少一个夹具,所述至少一个夹具从所述相交部延伸,并且能够操作以可滑动地将所述框架固定至所述管腔的所述内表面和所述外表面上;
其中所述膨胀环能够操作以打开并锚固所述支架主体,以用于接纳分流器。
2. 根据权利要求1所述的系统,其中所述夹具包括:
多个外支柱构件,所述多个外支柱构件对齐并从所述第一相交部延伸并且在与所述第一相交部相对的端部处接合,所述外支柱构件能够沿所述管腔的所述内表面滑动;和
多个中心支柱构件,所述多个中心支柱构件设置在所述外支柱构件之间形成的间隙中,所述中心支柱构件被对齐并从所述第二相交部延伸;
其中所述中心支柱构件能够沿所述管腔的所述外表面滑动,并且在与所述外支柱构件连通的孔中在与所述第二相交部相对的端部处附接。
3.根据权利要求2所述的系统,其中激光切割夹持模式在所述外支柱构件和所述中心支柱构件之间形成。
4.根据权利要求2所述的系统,其中所述中心支柱构件与所述外支柱构件间隔预定距离。
5.根据权利要求2所述的系统,其中所述中心支柱构件与所述外支柱构件通过焊接、焊合或粘合在所述孔处附接。
6. 根据权利要求1所述的系统,其中所述夹具包括:
多个外支柱构件,所述多个外支柱构件对齐并从所述第一相交部延伸并且在与所述第一相交部相对的端部处接合;和
多个中心支柱构件,所述多个中心支柱构件设置在所述外支柱构件之间形成的间隙中,所述中心支柱构件被对齐并从所述第二相交部延伸;
其中所述中心支柱构件能够沿所述管腔的所述外表面滑动,并且能够操作以通过限定在所述中心支柱构件和所述第二相交部之间的阻力元件向内偏压。
7.根据权利要求1所述的系统,其中所述膨胀环的所述形状记忆构型包括金属合金管结构。
8.根据权利要求7所述的系统,其中所述金属合金为镍钛合金,并且所述结构经激光切割。
9.根据权利要求7所述的系统,其中所述形状记忆构型由形状记忆位置处于打开状态的形状记忆材料形成。
10.根据权利要求1所述的系统,其中所述框架的所述多个细长构件弯成弓形,使得所述框架抵抗压缩,所述细长构件能够围绕所述连接件扭卷预定量。
11. 根据权利要求10所述的系统,其中所述多个细长构件中的至少一对细长构件被成形为V形、U形或椭圆曲线。
12.根据权利要求1所述的系统,其中所述支架主体包括近侧端部、远侧端部和设置在两者间的中心部分;并且
其中所述第一膨胀环被设置在所述支架主体的所述远侧端部或所述近侧端部上或附近,其中所述多个细长构件的所述连接件在所述相应远侧端部或所述近侧端部处或附近接合。
13.根据权利要求12所述的系统,还包括:
第二膨胀环,所述第二膨胀环以机械方式连接至所述支架主体的所述管腔的内表面和外表面,所述第二膨胀环具有包括形状记忆构型的框架,其直径大于所述支架主体的有效膨胀量,其中所述第二膨胀环能够操作以打开并锚固所述支架主体,以用于接纳分流器;
所述框架,其包括在连接件处和在与所述连接件相对的第一相交部和第二相交部处接合的多个细长构件;和至少一个夹具,所述至少一个夹具从所述相交部延伸并能够操作以可滑动地将所述框架固定至所述管腔的所述内表面和所述外表面上。
14.一种将编织支架主体展开至脉管中的方法,所述方法包括:
将多个膨胀环与所述编织支架主体的管腔进行装配,所述编织支架主体的所述管腔由多个编织构件形成,其中在所述多个编织构件之间形成空隙;
将每个膨胀环与所述编织支架主体的所述管腔的内表面和外表面选择性地附接,每个膨胀环赋予所述编织支架主体向外膨胀的径向力,从而保持所述编织支架主体的所述管腔处于打开位置,
每个膨胀环包括:在连接件处和在与所述连接件相对的第一相交部和第二相交部处接合的多个细长构件;以及从所述相交部延伸并能够操作以将所述框架固定至所述管腔的所述内表面和所述外表面上的至少一个夹具;
将所述夹具的多个外支柱构件可滑动地附接至所述管腔的所述内表面,每个外支柱构件被对齐并从所述第一相交部延伸,并且在与所述第一相交部相对的端部处接合;以及
将所述夹具的多个中心支柱构件可滑动地附接至所述管腔的所述外表面,每个中心支柱构件被设置在所述外支柱构件之间形成的间隙中,所述中心支柱构件被对齐并从所述第二相交部延伸。
15.根据权利要求14所述的方法,还包括:在与所述支柱构件连通的孔中,在与所述第二相交部和所述第一相交部相对的端部处将所述中心支柱构件和所述外支柱构件附接在一起。
16.根据权利要求14所述的方法,还包括:使每个膨胀环形成具有金属合金管结构的所述形状记忆构型。
17.根据权利要求14所述的方法,还包括:通过在所述夹具的所述第一相交部和所述第二相交部上或周围并入偏压元件,将所述中心支柱构件和所述外支柱构件偏压在一起。
18.根据权利要求14所述的方法,还包括:将所述外支柱构件和所述中心支柱构件间隔预定距离。
19.根据权利要求14所述的方法,还包括:在所述外支柱构件和所述中心支柱构件之间的孔处形成外接入点。
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US10076428B2 (en) | 2018-09-18 |
KR20180023834A (ko) | 2018-03-07 |
CN107773333B (zh) | 2021-11-23 |
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