CN108260342B - 可释放递送系统 - Google Patents
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/95—Instruments specially adapted for placement or removal of stents or stent-grafts
- A61F2/962—Instruments specially adapted for placement or removal of stents or stent-grafts having an outer sleeve
- A61F2/966—Instruments specially adapted for placement or removal of stents or stent-grafts having an outer sleeve with relative longitudinal movement between outer sleeve and prosthesis, e.g. using a push rod
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- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/82—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/82—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/86—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure
- A61F2/88—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure the wire-like elements formed as helical or spiral coils
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- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/95—Instruments specially adapted for placement or removal of stents or stent-grafts
- A61F2/962—Instruments specially adapted for placement or removal of stents or stent-grafts having an outer sleeve
- A61F2/966—Instruments specially adapted for placement or removal of stents or stent-grafts having an outer sleeve with relative longitudinal movement between outer sleeve and prosthesis, e.g. using a push rod
- A61F2002/9665—Instruments specially adapted for placement or removal of stents or stent-grafts having an outer sleeve with relative longitudinal movement between outer sleeve and prosthesis, e.g. using a push rod with additional retaining means
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Abstract
公开了植入物接合机构,用于维持与支架的接合,直到其完全展开并从导管或护套扩张。涉及这些接合机构的设备、方法和系统允许医师在完全展开之前抽出或缩回护套,从而允许在更期望的位置重新展开支架。
Description
相关申请
本申请要求名称为“Releasable Implant Delivery System”、申请号为62/220,910、申请日为2015年9月18日的美国临时申请的优先权,在此通过引用,将其整体并入本文。
背景技术
诸如支架或支架移植物之类的医疗植入物也可用于打开血管以减轻斑块积聚的影响,作为将栓塞材料保留在动脉瘤内的支架,作为分流器以限制血液流向某些区域,或出于其他原因。
支架或其他植入物通常与递送设备一起递送,递送设备包括护套或导管以及该导管内的细长推动器。一旦护套的远端位于期望的位置处,护套要么缩回要么使用推动器将支架推出护套。然而,支架并不总是部署在医师可能想要的精确位置,因此可能希望在其最终展开之前将支架收回到护套中。
发明内容
描述了植入物递送系统。植入物递送系统可以用于支架、支架移植物、线圈、塞子、封堵器或其他植入物。
一个实施例涉及一种带有具有一个或多个接合支架的一个或多个近侧环的支柱的推动器的递送系统。在支架完全展开之前,可以将支柱向近端拉动以将支架恢复回到其递送护套。
本发明的另一实施例涉及一种具有推动器的递送系统,该推动器具有带有多个通道的远端管状体。通道定位在支架的近侧环的周围,允许支架撤回到其递送护套中。在一个实施例中,管状体的远端热定型为当在非约束位置从递送护套推出时径向扩张。这种扩张导致通道的宽度增加,释放支架的近端环。
在另一实施例中,支架包括从其近端延伸的多个臂构件。臂构件具有扩大的近端,其可以接合推动器的远端上的多个通道。在一个实施例中,通道可以彼此纵向偏移。在另一实施例中,推动器的远端可热定形,以在不受递送护套约束时径向扩张,由此释放臂构件的扩大的近端。
在另一实施例中,递送系统包括具有远离推动器的芯线定位的多根线的推动器。多根线包括一个或多个标记带,所述一个或多个标记带定位成当推动器向近侧缩回时接触位于支架的环上的标记线圈。
在另一实施例中,公开了一种支架,在其远端具有单个三角形环,该环可以连接到本发明的一个接合机构上。
附图说明
通过本发明实施例的以下描述和参考附图,本发明实施例能够实现的这些和其他方面、特征和优点将是显而易见的并且得以阐明,其中
图1和图2示出了可以与本发明的接合机构一起使用的编织支架的两个实施例。
图3和图4示出了本发明的一般接合系统的侧截面图。
图5和图6示出了本发明的具有支柱的接合系统的实施例的侧视图。
图7示出了本发明的具有支柱的接合系统的实施例的侧视图。
图8和图9示出了本发明的具有细长块构件的接合系统的实施例的侧视图。
图10-15示出了本发明的具有通道的接合系统的实施例的各种视图。
图16示出了本发明的具有细长近侧臂的支架的实施例的侧视图。
图17示出了本发明的具有接合图16的支架的通道的接合系统的实施例的视图。
图18和19示出了本发明的具有接合图16的支架的通道的接合系统的实施例的视图。
图20和21示出了本发明的具有接合图16的支架的通道的接合系统的实施例的视图。
图22示出了本发明的具有保持线的接合系统的实施例的视图。
图23示出了本发明的具有径向偏移标记带的接合系统的实施例的视图。
图24示出了本发明的具有径向偏移标记带的接合系统的实施例的视图。
图25和图26示出了本发明的具有用于与接合系统连接的单个近侧环的支架的视图。
具体实施方式
现在将参照附图描述本发明的具体实施例。然而,本发明可以以许多不同的形式来实施,并且不应该解释为限于本文阐述的实施例;相反,提供这些实施例是为了使本公开透彻和完整,并且将本发明的范围充分地传达给本领域技术人员。在附图中示出的实施例的详细描述中使用的术语不旨在限制本发明。在附图中,相同的数字表示相同的元件。
支架通常与递送设备一起递送,递送设备包括护套或导管以及该导管内的细长推动器。一旦护套的远端位于期望的位置处,护套要么缩回要么使用推动器将支架推出护套。然而,支架并不总是部署在医师可能想要的精确位置,因此可能需要在完全展开之前将支架缩回到护套中。本发明的实施例涉及植入物递送设备,其接合植入物并允许植入物在其最终递送和扩张之前缩回,从而允许植入物根据需要重新定位。
通常,本说明书讨论了关于具有近侧环或类似接合特征的支架的递送和接合机构。然而,应该理解的是,其他植入物也考虑用于这些机构,诸如支架移植物、微线圈、塞子、封堵器或类似设备。
本发明的一些实施例与在其端部(并且特别是其近端)具有环的支架接合。例如,图1示出了由一根或多根线102编织的支架100,以具有多个较大的喇叭形环104和较小的次级环107。这些喇叭形环104还可以具有线圈106并且可以连接到沿支架100的长度延伸的不透射线的线105。在另一示例中,图2示出了具有类似于图1的外层100和内层122的双层支架120,内层122由比线102相对较小直径的线124编织而成。这些层100和122在支架120的近端或沿着长度的位置处经由连接器构件126彼此连接。这些支架100或120的附加细节在美国专利公开第2012/0259404和2013/0245745号中可以发现,在此将其整体并入本文。
图3和图4示出了递送系统130的基本横截面视图,以说明本说明书中公开的支架接合和保持机构的基本操作。支架接合和保持机构136位于递送护套132内的推动器134的远端上。推动器134可在护套132内前进(或者护套132可缩回)以暴露支架100并允许它在患者的血管内扩张。由于支架接合机构136接合支架100的环106(或支架100的其他特征),推进器134和支架100可在支架100完全展开之前缩回(即在支架100完全从护套132离开并完全径向扩张之前)。
图5和图6涉及支架接合机构136的一个示例实施例,支架接合机构136包括四个突出支柱142,四个突出支柱142定位为穿过支架100的环104并且可用于在支架100完全展开之前将环104拉向远侧。在这方面,只要环104保持定位在支柱142周围,支架100就可以恢复回到护套132中。
支柱142可以从管状中心部分144的径向等距的位置延伸,并且与扩大的推动部分140的远端相隔。在一个示例中,支柱大体上为圆柱形并具有圆形顶部。然而,支柱142也可以是矩形、方形、金字塔或类似形状。机构136可以包括任何数量的支柱142,例如1、2、3、4、5、6、7和8个。虽然这些支柱公开为沿着单个径向位置定位,但是支柱142也可以以交替的距离彼此偏移或者可以包括多排支柱142(例如2、3或4排)。偏移支柱可用于例如系统中,其中一些支柱保持支架的较大喇叭形环并且其他支柱保持支架的较小次级环。
支柱142、管状中心部分144和扩大的推动部分140都可以是单个整体构件(例如,全部模制为单件),或者每个部件可以彼此连接/固定。推动器134和/或推动器134的芯线可以固定在部分140和144的内部通道146内,允许推动器134轴向移动护套132内的部件。
在操作中,护套132的远端定位在血管内的期望展开位置处或附近。推进器134在护套132内向远侧推进,导致扩大的推动部分140接触环104的近端并将支架100向远侧推出护套132。就在支柱142离开护套132的远端之前,推动器134可向近侧撤回,导致支柱142接触并拉向环104的内部近侧部分,由此将支架100拉回护套132用于随后的展开尝试。
图7示出了支架接合机构137的另一个示例性实施例,其与前述机构136大致类似,但包括向远端倾斜的支柱143(即,支柱143的向远端倾斜的端部),其可以允许支架100的环104在最终展开期间更容易滑落并脱离机构137。在一个示例中,支柱143可以相对于管状中心部分144的表面成约90度和约45度之间的角度。在替代示例性实施例中,一个或多个支柱143可以成不同角度(例如,一些支柱以45度成角度,其他支柱以60度成角度)。在另一替代示例性实施例中,支柱143可以与上述类似的角度向近侧成角度,以在缩回期间更好地保持支架100的环104。
图8和图9示出了支架接合机构150的另一示例实施例,其包括保持块154,保持块154具有多个轴向细长的矩形154A,其尺寸设定为与支架100的环104接合。例如,图9中的保持块154包括四个矩形形状154A,但是1-20(或更多)个形状154A也是可能的。保持块154优选地朝远侧并远离圆柱形推动块152固定,两者都连接到推动器的芯线156。推动块152也优选由不透射线材料构成,以用作视觉上不同的标记带。在操作中,保持块154和推动块152的功能类似于之前描述的实施例,分别拉动和推动支架100的环104穿过护套132。
示出矩形形状154A具有带有边缘的陡峭的近端和远端。然而,这些形状154A的端(特别是与环104接触的远端)可以交替地具有圆形或钝的形状。
图10-15涉及又一支架接合机构161,所述支架接合机构161可以固定到推动器134并且用于在完全展开之前将支架100缩回到护套132中。具体而言,支架保持机构161包括固定到推动器134的端部的管状体160,并且可以通过当在护套132内部时闭合和当在护套132外部时打开来接合和脱离支架100的环104。管状体160的远端包括多个细长通道160B,所述多个细长通道160B向近侧延伸并且然后变宽成扩大的通道部分160C。这些通道160B和160C有效地从管状体部分160形成轴向伸长的远侧指状部分160A。在一个示例中,管状体160包括与支架100的至少一些环104的位置相对应的、四个对称的径向等距离通道160B、160C。然而,可以创建附加的通道以对应于支架100的环104(例如6条或8条)。
在一个实施例中,热定形指状部分160A以在不受限制时径向扩张,如图14和15所示。在其他实施例中,指状部分是接合的或可弯曲的,使得支架100的径向可膨胀力相对于指状物160A膨胀并使其径向膨胀。应该注意的是,扩大的通道部分160C越靠近放置的位置,当支架100远侧向外推动时,支架100的扩张和展开可能发生得越慢。另外,进一步的近侧定位可以增加机构161的保持强度。
在其压缩构造中,支架100的环104的近端或弯曲位于扩大的通道部分160C中,并且环104的相对笔直的相邻部分在通道部分160B的上方和下方向远侧延伸。由于扩大的通道部分160C具有足够大的宽度以容纳支架100的环104的近端部分,但较窄的细长通道部分160B对于处于其压缩构造时的环104的宽度而言太窄,环104和因此支架100在被压缩在护套132内时保持与管状体160接合,如图12和13所示。
机构161可以以各种方式制造,以便形成可径向扩张的指状部分。在一个实施例中,具有与该机构的直径相似的直径的材料放置在该机构内。随后将直径逐渐变大的材料引入机构内,并且随着时间的推移热定形该机构。以这种方式,形状记忆内置于机构的指状部分中,使得指状部分在不受护套或导管约束时扩张。
当推动器134通过护套132向远侧推进并且支架100被推出护套132的远端时,管状体160的指状部分160A保持其径向压缩构造,由此保持支架100。然而,当管状体160的远端并且因此指状部分160A伸出护套132的远端时,指状部分160A径向扩张,从而增加细长通道160B的宽度,如图14和15所示,允许环104向远侧穿过通道160B并被释放。因此,直到指状部分160A越过护套132的远端,支架100可以恢复并且撤回到护套132中以便稍后展开。
美国专利公开第2010/0268204和2015/0289879详细描述了热分离系统,其也可以与之前描述的接合机构161(或本说明书的任何其他实施例)一起使用并且通过引用由此整体并入本文。在一个实施例中,细丝(聚合物或金属)或缝合线可以缠绕在管状体160的通道160C之间并且类似于支架环104地释放。
可选地,支架100的一部分可以放置在通道160C上方,并且细丝或缝合线可以用于将支架100保持在通道上方。由细丝和/或缝合线施加的张力将保持管状体160处于闭合构造直至破裂,于是该部分将膨胀至其预先设定的膨胀形状。诸如上面结合的机械系统或热分离系统的分离系统可用于破坏细丝/缝合线或网状物的保持机构,以去除保持力并允许指状物160A膨胀。在用户可能希望对部署进行更多控制的情况下,这种配置可能是合乎需要的。
虽然先前描述的支架接合机构可以与支架100的环104可释放地互锁,但是其他接合机构可以与支架100的近端上的保持臂互锁。例如,图16示出了支架170,支架170具有固定到环104的细长臂162A/162B,其近端延伸并终止于扩大区域或圆形部分164。这些向近侧延伸的臂162A/162B和圆形部分164允许接合机构接合与支架170的主体间隔开的近侧区域,由此允许支架170几乎完全膨胀而不从推动器134释放。
图17示出了一个这样的支架接合机构,其包括可以固定到推动器134的远端的管状体180。与前述实施例类似,管状体180包括具有多个通道的远端。通道优选地包括较窄宽度的远侧部分180B和终止通道的相对较宽的近侧部分180C。通道180C的较宽的近侧部分的尺寸设定为允许圆形部分164进入其中,而较窄宽度的通道部分180B可容纳臂162A/162B中的至少一些,同时容纳在护套132中。由通道形成的指状部分180A优选地连接到圆柱形支撑件和不透射线的标记构件182,推动器132的芯线或导丝可以穿过该圆柱形支撑件和不透射线的标记构件182。
类似于先前的实施例,只要指状部分180A和较宽的通道部分180C保留在护套132中,支架170在血管内大部分被展开之后仍然可以撤回到护套132中。然而,一旦推动器134推出护套132的远端,臂162A和162B径向向外膨胀,将圆形部分164拉出管状体180的较宽的近侧部分180C,以完全释放支架100。
图18和19示出了管状构件184,其在功能和操作上与前述管状构件180大致相似。然而,管状构件184包括更靠近管状构件184的远端的一些较宽的通道部分184B,以及位于通道部分184B的近侧的一些较宽的通道部分184C。就此而言,支架170可以包括相对较长的臂162A,其从一些环104延伸以配合到近侧通道部分184C中并且与近侧通道部分184C接合,并且相对较短的臂162B从其他环104延伸以配合到远侧通道部分184B中并且与远侧通道部分184B接合。通过偏移通道部分184B和184C,可以另外获得另外的径向空间,从而允许可能使用更多数量的通道。
在一个示例中,臂162A/162B的长度可以在较短的臂162B和较长的臂162A之间沿周向交替,而远侧和近侧通道部分184B/184C可以类似地交替。在一个实施例中,远侧通道部分184B位于管状构件184的彼此相对侧上,并且近侧通道部分184C类似地位于管状构件184的彼此相对侧上,所有这些都以相等程度的量彼此径向分开。如在之前的实施例中那样,指状部分184A连接到允许推动器构件134的芯线通过的远侧支撑圆柱体182,并且还可以用作不透射线标记。
图20和21示出了与先前描述的管状构件184类似的管状构件200的另一实施例,其具有较宽的近侧通道部分200C和较宽的远侧通道部分200B。然而,不存在远侧支撑圆柱体182,允许指状部分200A的远端是自由的。
在一个实施例中,指状部分200A在它们离开护套132的远端时保持在它们的径向位置,保持远端和近端通道200B、200C的尺寸。在另一个实施例中,热定形指状部分200A,以径向扩张,并因此当位于护套132中时保持径向压缩,并且当移动到护套132的外部时径向打开或“开花”。一旦径向打开,远侧和近侧通道200B、200C的尺寸也增加,使得圆形部分164更容易释放。
如同在具有管状构件的前述实施例中一样,护套134的芯线206穿过管状构件200定位,并且进一步远侧延伸至支架100的远端。该定位允许支架100在芯线206上被压缩,并且可以提供额外的摩擦以帮助将支架100拉出护套134。
图22示出了支架接合机构210的另一实施例,其中保持线214穿过支架100的至少一些环104并且可释放地连接到推动器234的远侧部分212。保持线214的一端沿着位置217焊接或结合到推动器234的远侧部分212。保持线214的相对端包括扩大的圆形部分216,其装配在远侧部分212上的孔或凹口212A内。
当在护套132中时,圆形部分216保持在凹口212A中,从而将保持线214保持在通过支架环104的闭环中。在这方面,支架100可完全或几乎完全从护套132中展开,然后缩回到护套132中以供稍后重新展开。一旦达到支架100的期望位置,推进器134可以进一步向远侧推进,使得远侧部分212和凹口213A暴露在护套132的外部。该位置允许圆形部分216移出凹口212A,打开由保持线214形成的环。推动器134可向近侧撤回,将保持线214拉回到护套132中。
虽然在图22中只示出了一根保持线214和凹口216,但是也可以包括很多个(比如2-6个)。这些多根保持线214可以穿过不同的环104或全部相同的环104。保持线214可以由诸如镍钛诺的金属构成,并且可以热定形以拉直,或者可以具有抗弯曲刚度,并且当不受约束时通常伸直。
图23示出了具有多个推动器标志带228的支架接合机构220的又一实施例,该多个推动器标志带228可用于接触并拉向支架环104上的标志线圈106,从而将支架100拉回到护套132中。推动器标记带228可以固定在连接在近侧标记带221和远侧粘合位置226(例如标记带或焊接)处的线224上,并且弯(bent或bowed)离推动器134的芯线222。由于标记带228相对于芯线222(或者可选地,导丝)“浮动”,可以提供标记带228的相对更多的运动自由度(与直接结合到芯线222的静态夹具相反),并且可以由此提供与支架环104的标记线圈106更好的接合。
图23中示出了两根线224,但是可以使用与标记线圈106对应的任何数量的线224(例如1-8根)。每根线224可以包括任何数量的标记带228,例如1-4个带。近端标记带221可由管、缠绕线圈或类似结构形成,并且当推动器134向远侧推进时,推动环104的近端以将支架100推出护套132。
如同之前的实施例,支架100可以几乎完全展开到护套132外并且缩回到护套132中。具体地,如果支架100的近端保持压缩,使得标记线圈106仍然可以与标记带228接触,缩回推动器134将使得标记带228的近端接触标记线圈106的远端,由此将支架100向近侧拉动到护套138内以供稍后重新展开。
图24示出了与先前描述的机构220几乎相同的支架接合机构230。然而,代替使用在近侧和远侧位置处连接的弓形线224,线225仅在近侧标记带221处连接并径向向外延伸。标记带228位于线225的远端处或其附近,并由此与芯线222径向间隔开。在这方面,标记带228定位在与图23的实施例类似的位置,以允许当推动器134向近侧缩回时,与支架100的标记线圈106接触。再次,图24中仅示出了两根线225,但是多根电线是可能的(例如,在2-8根线之间)。
图25和图26示出了编织支架230,其编织成具有相对较大的单个近侧环232,其允许支架230从护套132完全展开,然后缩回到护套132中。优选地,支架230末端线焊接到两根对称弯曲的线234A和234B上,以形成在近侧终止于“V”形环232中的成角度的近端。两根线234A和234B优选地仅在支架230的最近端处彼此焊接在一起,并且不在支架顶部的相对端附近,这允许由线234A、234B形成的环更容易在护套134内折叠。该近侧环支架230提供间隔开的近侧环232,其可以连接到本说明书中先前讨论的许多支架接合机构,诸如机构210。
两根线234A和234B可以具有比组成支架230的其他线更大的直径,由此增加将这些线焊接在一起的容易程度。两根线234A和234B可以与编织在支架主体中的线分开并且分离,或者可以沿着支架230的长度与其他线编织在一起。优选地,构成支架主体的其他线焊接到线234A和234B的下侧。
通常,除非另有说明,否则之前描述的实施例的部件可以具有包括形状记忆许可的部件,例如镍钛诺和/或聚合物。
先前描述了植入物递送系统材料。在一些实施例中,植入物递送系统由固定在一起的多个管或多个元件组成。在这些实施例中,递送系统的一些部分的材料可以不同于其他部分中的材料。因此,例如,植入物递送系统的更近侧部分可以利用高强度材料来加强高推力强度,而植入物递送系统的更远侧部分可以利用具有高形状记忆的材料来增加如图14所示的径向膨胀的“开花”效果。
先前描述的递送系统实施例可以具有各种直径以适应各种支架尺寸和导管尺寸。在一个实例中,递送系统可具有约0.005”至约0.05”的直径。
本说明书的植入物递送系统可以用于递送各种植入物,例如各种封堵器、栓塞线圈或其他植入物,尽管为了方便起见在整个说明书中使用术语“支架”。
请注意,尽管在说明书中偶尔使用术语导管或护套来讨论使用植入物递送系统的结构,但递送系统可用于多种递送设备,例如海波管或其他递送设备。因此,植入物递送系统可用于通过任何类型的递送设备递送植入物。
请注意,所示的图仅仅是为了有助于理解的表示和/或说明,而不限于明确示出的内容。类似地,任何测量仅仅是作为帮助理解的说明性示例,并不意味着限制。
尽管已经根据特定实施例和应用描述了本发明,但是根据该教导,本领域的普通技术人员可以在不脱离所要求保护的发明的精神或超出范围的情况下产生另外的实施例和修改。因此,应该理解,本文的附图和描述是通过举例的方式提供的,以便于理解本发明,并且不应该解释为限制其范围。
Claims (10)
1.一种血管植入物递送设备,包括:
护套(132);
布置在所述护套内的细长推动器(134);
从所述推动器(134)向远侧延伸的多根线(224、225);
位于所述多根线上的标记带(228);
具有多个标记线圈(106)的植入物;
其特征在于:
所述多根线将所述标记带支撑在径向远离所述推动器的中心的位置;以及
所述标记带位于所述护套内的所述标记线圈的远侧,如果植入物的近端保持压缩,使得标记线圈(106)仍然可以与标记带(228)接触,缩回细长推动器(134)将使得标记带(228)的近端接触标记线圈(106)的远端,由此将植入物向近侧拉动到护套(138)内。
2.根据权利要求1所述的血管植入物递送设备,其特征在于,所述多根线(224、225)弯离所述推动器。
3.根据权利要求1所述的血管植入物递送设备,其特征在于,所述多根线(224、225)是弧形的。
4.根据权利要求1所述的血管植入物递送设备,还包括远侧结合位置(226),所述远侧结合位置(226)包括在所述推动器(134)的远端处的标记带。
5.根据权利要求1所述的血管植入物递送设备,其特征在于,从所述推动器向远侧延伸的所述多根线(224、225)包括2到8根线。
6.根据权利要求1所述的血管植入物递送设备,还包括芯线(222)。
7.根据权利要求6所述的血管植入物递送设备,其特征在于,所述多根线近侧连接到所述推动器并远侧连接到所述芯线(222)上的远侧结合位置(226)。
8.根据权利要求7所述的血管植入物递送设备,其特征在于,所述远侧结合位置(226)是标记带或焊缝。
9.根据权利要求1所述的血管植入物递送设备,其特征在于,所述标记线圈(106 )从所述植入物的近侧环(104)径向突出。
10.根据权利要求1所述的血管植入物递送设备,其特征在于,所述标记带与所述多根线的远端齐平。
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WO2017049312A1 (en) | 2017-03-23 |
US20170079819A1 (en) | 2017-03-23 |
CN108260342A (zh) | 2018-07-06 |
EP3349670B1 (en) | 2020-09-09 |
EP3349670A1 (en) | 2018-07-25 |
US20190142617A1 (en) | 2019-05-16 |
US10182931B2 (en) | 2019-01-22 |
JP6816126B2 (ja) | 2021-01-20 |
US11931277B2 (en) | 2024-03-19 |
US11000394B2 (en) | 2021-05-11 |
JP2018531664A (ja) | 2018-11-01 |
US20240173155A1 (en) | 2024-05-30 |
EP3349670A4 (en) | 2019-09-04 |
US20210220158A1 (en) | 2021-07-22 |
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