CN103491900A - 用于二尖瓣修复和替换的系统 - Google Patents
用于二尖瓣修复和替换的系统 Download PDFInfo
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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
- A61F2/02—Prostheses implantable into the body
- A61F2/24—Heart valves ; Vascular valves, e.g. venous valves; Heart implants, e.g. passive devices for improving the function of the native valve or the heart muscle; Transmyocardial revascularisation [TMR] devices; Valves implantable in the body
- A61F2/2442—Annuloplasty rings or inserts for correcting the valve shape; Implants for improving the function of a native heart valve
- A61F2/2454—Means for preventing inversion of the valve leaflets, e.g. chordae tendineae prostheses
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- A—HUMAN NECESSITIES
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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
- A61F2/02—Prostheses implantable into the body
- A61F2/24—Heart valves ; Vascular valves, e.g. venous valves; Heart implants, e.g. passive devices for improving the function of the native valve or the heart muscle; Transmyocardial revascularisation [TMR] devices; Valves implantable in the body
- A61F2/2412—Heart valves ; Vascular valves, e.g. venous valves; Heart implants, e.g. passive devices for improving the function of the native valve or the heart muscle; Transmyocardial revascularisation [TMR] devices; Valves implantable in the body with soft flexible valve members, e.g. tissue valves shaped like natural valves
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- A—HUMAN NECESSITIES
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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
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- A61F2/2445—Annuloplasty rings in direct contact with the valve annulus
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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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
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Abstract
本发明公开了二尖瓣(mitral valve)修复系统,其中一个或多个二尖瓣介入装置可于血管内被推进至病人的心脏并在二尖瓣之上或沿着二尖瓣展开以稳定二尖瓣瓣叶。介入装置也可以便于假体二尖瓣植入物的放置或锚定。介入装置通常可包括可枢转地和/或旋转地联接至臂的近端组的臂的远端组,该臂的近端组也可枢转地和/或旋转地被联接。臂的远端组可以被推进经过导管开口到子环位置(例如,在二尖瓣之下)并从低轮廓(1ow-profile)传送配置重新配置成展开的固定配置。近端臂构件可稍后被展开,以使得远端和近端臂构件可以夹住两组臂之间的瓣叶以稳定瓣叶。
Description
对相关申请的交互引用
本申请要求2010年12月23日递交的美国临时专利申请61/460,041和2011年6月21日递交的美国临时专利申请61/499,630,本申请参考引用了每一个申请的全部内容。
技术领域
本发明一般涉及用于不正常心脏瓣修复的医疗装置。更具体地说,本发明涉及用于二尖瓣的修复和/或替换的装置和方法。
背景技术
例如,影响二尖瓣的正常功能的情况包括二尖瓣反流,二尖瓣脱垂,二尖瓣狭窄。二尖瓣反流是一种导致从左心室到左心房的血液异常泄漏的心脏疾病,在该心脏中,二尖瓣的瓣叶不能在顶峰收缩压力被接合并置。有一些可能会影响二尖瓣瓣叶正常闭合的结构性因素。例如,许多患心脏疾病的患者经历导致扩大的二尖瓣环的心肌扩张。二尖瓣环的扩大使得瓣叶在收缩期间很难合紧。腱索中的伸展或撕裂,乳头肌到二尖瓣瓣叶下侧的肌腱连接也可能会影响二尖瓣环的正确关闭。例如,破裂腱索可能会导致瓣叶由于瓣叶上的张力不足而脱垂入左心房。例如,当乳头肌功能由于缺血受到损害时,也可能发生异常回流。由于左心室在收缩期的收缩,受影响的乳头肌收缩不充分而影响正常关闭。
二尖瓣脱垂,或当二尖瓣瓣叶异常隆起到左心房时,导致二尖瓣的不规则行为,也可能导致二尖瓣回流。二尖瓣正常运作也可能受到二尖瓣狭窄及二尖瓣口的影响,从而导致阻抗左心室舒张充盈或缩小。
通常情况下,二尖瓣反流的治疗涉及利尿剂和/或血管扩张剂的应用以减少流回左心房的血液量。其他过程涉及二尖瓣的无论是修复或替换的手术方法(打开和介入)。例如,典型的修复方法涉及二尖瓣的瓣叶在哪里或被制为肚带或被制为部分被切除的扩张环。
该环的束紧已经由一般固定到环或围绕组织的环形的或周边环形的轴环的植入所完成。其他修复过程也涉及二尖瓣瓣叶彼此成部分并置的束紧或夹紧。可选地,更具侵入性的过程涉及整个二尖瓣自身的替换,其中机械瓣或生物组织被植入到心脏以代替二尖瓣。这些传统上被通过大型开放式开胸手术所完成,因而很痛苦并需要很长的恢复期。
然而,对于许多修复和替换过程,装置的耐久性或瓣环成形术轴环或替换瓣的不当大小可能会导致病人其他问题。此外,许多修复过程是高度依赖心脏外科医生的技能的,不佳地或不准确放置缝线可能会影响过程的成功。
相比于主动脉瓣替换,二尖瓣替换带来了独特的解剖障碍,使得经皮二尖瓣替换明显比主动脉瓣替换更复杂和具有挑战性。首先,不同于相对地对称和均匀的主动脉瓣,二尖瓣环有非圆形的椭圆形或肾状的形状,以及可能是不可预知的经常缺乏对称的几何形状。这种不可预测性使得设计具有符合二尖瓣环的能力的二尖瓣假体很困难。在瓣叶和/或环以及假体之间的紧密贴合的缺乏在其间留下了间隙,创建了通过这些间隙的血液回流。圆筒状瓣假体的放置,例如,可能在原生瓣的连合区域的留下间隙,从而可能会导致在这些区域的瓣周泄漏。
除了不规则的、不可预知的形状,二尖瓣环缺乏来自周围组织的显著量的径向支撑。例如,主动脉瓣,完全由肌肉组织包围,通过提供原生结构性支撑帮助锚定假体瓣。在另一方面,二尖瓣仅由在外壁上的肌肉组织界定。二尖瓣的内壁仅由从主动脉道的下部分隔二尖瓣环的组织的薄壁界定。其结果是,二尖瓣环上的较大的径向力,例如,由扩展支架假体施加的径向力,可能会导致具有潜在致命后果的主动脉道下部的压缩。
左心室的腱索也可能在展开二尖瓣假体中存在障碍。这是二尖瓣独有的因为主动脉瓣不包括腱。左心室中的腱的迷宫使得在二尖瓣替换和修复中导航和定位展开导管更加困难。在原生瓣的心室侧的假体瓣或锚定装置的展开和定位因腱的存在也很复杂。
鉴于与当前过程相关的困难,仍然需要治疗功能失调性心脏瓣的简单,有效,创伤小的装置和方法。
发明内容
介入医疗器械可能被血管内推进到病人的心脏并在二尖瓣瓣叶上或沿二尖瓣瓣叶展开以稳定瓣叶。介入医疗器械也可以方便以有效方式植入的假体二尖瓣的放置或锚定。介入装置通常可以包括可枢转地和/或可旋转地联接到一超环形组臂的一半环状组臂。一远端组臂可以推进经过导管开口远端到半环状的位置(例如,在二尖瓣环的下面和在原生瓣叶的后面)以及从低轮廓输送配置重装为展开的固定配置。然后,近端臂构件也可能被展开以使得远端和近端臂构件一旦被完全展开后,即可在两组臂件夹紧瓣叶和/或环以稳定瓣叶。在这两种情况下,臂构件取决于展开所需的顺序可被依次展开或同时展开。
当稳定装配的近端和远端被致动以从它们的轴向伸长的低轮廓配置重装,这些装配可重新配置到已展开的扩展配置,其中每个臂和连接构件的枢轴安排允许装配在类似千斤顶配置中,径向地延伸至被展开的配置。在展开的配置中,每个臂构件可以枢转以在相对于装配的纵向轴线的径向方向上压缩臂构件以抵住相邻臂构件装配的侧表面,从而使得臂构件的产生的展开形状可形成弯曲的或部分弯曲的可顺着二尖瓣周边的配置。
在用于输送和展开一个或多个介入装置的一个示例中,这些装置可从来自心脏H的左心房中的超环形方法或从来自左心室中的半环形方法中被展开。此外,一个或多个介入装置可被已被展开的压缩其间的瓣叶的臂构件,展开在一个或两个瓣连合处中或一个或两个瓣连合处附近,稳定瓣叶的一部分同时允许瓣叶的其余部分以不受抑制的方式移动。虽然一个或多个介入装置可以被单独使用,支架,台架,或替换瓣装配可任选地使用以及与一个或多个装配结合地被使用。瓣装配可被扩大和任选地被锚定至稳定装配以使得该瓣装配向上、下,或完全地通过二尖瓣延伸。
一旦介入的移动装置已输送和/或扩大到其被展开的配置中,该装置可能被锁定到它的被展开的形状以及被留下在二尖瓣上或沿二尖瓣植入。为确保该装置仍然在瓣叶上固定,各种锁定机制可纳入到装置中。例如,各种锁定机制,例如,螺纹,具有释放导管的夹持元件,或其它合适的连接机制可被使用。
在另一种变化中,一个或多个臂构件本身可能形成多个增加装置灵活性的节或段。臂构件形成的节或段可当被抵住瓣叶放置时为装配提供增加的灵活性。具有增加的灵活性可允许介入设备更密切地符合特定的瓣的解剖结构并且还可以提供增强瓣的支撑。
此外和/或可选地,臂构件中的一个或所有可能具有圆形的或弯曲的边缘,以方便装置通过导管的输送而且减少任何可能对内部导管表面的磨损。例如,如果输送导管具有6毫米直径,每个各自的臂构件可具有例如,约5毫米的横截面宽度以及例如,约2毫米的高度。具有弯曲的边缘可允许装置通过导管腔的转换无需沿管腔表面磨损。此外,各臂构件的弯曲表面和边缘也可减少在接触的二尖瓣瓣叶上的任何潜在的磨损。
本文所述的介入设备的任何变化中,各种特征或突起,如销,雉堞,凸起的凸片,或任何其他的突起,突出,凸块,或可能有助于与替换二尖瓣植入的接合的特征可沿一个或多个臂构件被形成。这些特征可沿臂构件表面设置,该臂构件当被展开时面临着二尖瓣的中央区域。
此外和/或可选地,这些不同的特征或突起也可沿臂构件的表面被定义,该臂构件获得对二尖瓣瓣叶的直接接触。例如,稳定延伸入对二尖瓣瓣叶表面的接触的装配的近端和远端的臂构件也可结合各种特征。所给出的实施例可包括突起,凸片或销,其可以简单地在二尖瓣瓣叶的相对面上压缩或者它们可以以可选方式,关于相对的特征或突起当带动二尖瓣叶至锁定配置时,被相应地设计为交错或锁定。此外,这些特征或突起可被织物或覆盖物覆盖,例如成套的套筒,以呈现相对无创伤表面。
在另一种变化中,臂构件可随着合并狭窄的或锥形的臂进一步地变化,可能会降低在臂间的空间中的周漏的任何风险,如果有的话。可选地,稳定装配可能包括狭窄的或锥形的直接组件变成二尖瓣的后壁的臂,以使得任何替换瓣可直接接触二尖瓣后壁而没有任何间隙。
臂构件的另一个变化可能合并可从在后组的臂中线性延伸出或折叠出的扩展,以填补沿着在后瓣叶的任何空白。扩展可能可选地部分地延伸或可能关于并置的扩展锁定。另一种变化可能合并联接的机制,例如滑动缝合锁,其比从多个装配的臂延伸的导管和缝合线更先进,以创建在瓣叶上之其被展开的配置中的每一个被植入的装配之间的不易弯曲的或安全的连接。
然而,另一种变化中包括臂构件,其可以被配置在可选安排中,其中前端稳定结构可以被配置为具有相对短于近端稳定结构的展开臂构件的展开臂部件,以方便前端稳定结构的展开而无需干扰在左心室中发现的腱索或乳头肌。缩短的远端稳定臂构件的长度沿任何范围可能会发生变化并且也可以在其他的变化中被配置为相对长于近端稳定结构的臂。
对于锁定机制,不同类型的机制可被利用于锁定介入装置到其展开的配置。介入装置可包括一个或多个相应的沿着臂构件的侧表面的锁定机制(例如,销,棘齿,卷边,轴环,螺纹紧固件,铆钉,拉紧打结循环,等等)以使得锁定机制被重新配置到展开的配置时,被接收到各自的沿并置臂构件定义的接收通道。如前所述,拉紧线,缝合线,或导管可被联接到介入装置的远端以使得当拉紧时,装置可以重新配置成横向延伸的,展开的配置。此外,因为臂构件折叠成其展开的形状,锁定机制可被接收到其各自的接收通道并自动锁定以固定臂构件到其展开的配置。
在其他变化中,除了近端介入装置被修改外,远端介入装置也可被修改。一个变化可以包括可伸缩装配,其可被展开在二尖瓣心室侧上的平面之下的子环形空间中。伸缩装配可以由连接到枢转装配的伸缩臂组成,枢转装配可被用于从低轮廓扩展配置到成角度的展开配置定位臂。一旦延长定位,一个或多个伸缩构件可以从各臂以一定角度相对于彼此(取决于所需配置的锐角、直角、钝角)线性延伸。可选地,伸缩构件可以以弯曲或弧形的方式延伸以当展开时形成弯曲的臂构件。在另一种配置中,伸缩臂可线性延伸,同时相对的臂延伸以形成弯曲展开的臂。臂向外伸缩可避免缠绕各种心室的障碍物,如腱索和/或乳头肌。随着两臂完全伸展,近端稳定结构可稍后被展开固定在上部瓣叶表面。
另一种变化也可以利用两个或更多个从导管线性伸出并垂直或相对于导管成一角度延伸的臂,以形成沿上部瓣叶表面上的瓣上位置的弯曲臂以及沿着沿下部瓣叶的瓣下位置的弯曲臂。可替换地和/或附加地,臂可以被推进定位在前部和后部环上或相邻于前部和后部环。
两个或更多个臂可伸出通过响应开口,在一个变化中开口相邻地沿导管定位,两个近端臂可沿瓣上位置从导管延伸,而两个另外的的远端臂可沿瓣下从导管延伸以至少部分地压缩或稳定在一对近端和远端臂之间的瓣叶。
将装配定位或使其位于一个或两个二尖瓣接合处的层面或在其他的二尖瓣瓣叶的段之间的间隙中之后,装配提供瓣上臂和瓣下臂的通道,该通道位于至少部分或完全周向在前部和后部的上方和下方环或在瓣叶之上。装置稍后可以为现有导管缝合瓣的位置和固定提供一个平台。
臂可由足以提供灵活性的各种生物相容性材料构成,各种生物相容性材料是刚性的或半刚性的而足以为瓣叶提供支撑,例如,形状记忆合金,不锈钢等。或者,臂构件可以被构成以形成充气管状结构,其具有由膨胀气体,流体,或其它介质(例如,盐水,水等)引起的刚性,刚性被以足够高的压力引入臂结构。可选地,沿臂构件的刚性可通过使用硬化液充气臂产生,该硬化液当引入的时候是液体但在填充入臂构件之后会硬化或固化。另外和/或可选地,臂构件可以具有在臂构件的接触表面上形成的任意数量的摩擦元件或突起(倒钩,尖峰等,或本文所描述的任何凸起或元素)以增加臂和下层组织之间的固定。
此外,臂构件的长度可以改变以部分或全部地围绕外周关于瓣环的外周延伸以重叠在他们自。可选地,第二装配可以与第一装配组合使用以使得装配被定位和展开在瓣的相对的端部。每个装配可具有他们的朝向彼此延伸的臂构件以增加环刚性。
在介入装置的另一种变化中,支撑环可与一个或多个夹持件而不是与介入装置结合使用。假体超环形轴环的形状或尺寸可与二尖瓣的周边相似并且也可支撑植入的假体瓣。一个或多个开口在轴环上的任一端沿圆周被定义以为可能会通过每个各自的开口的导线或缝线提供引导。联轴器可附连到各自的导线或缝合线以使得当每根导线或缝线被拉紧时,联轴器可以以锁定方式被接收于通过环定义的各自的开口,以固定每个各自的夹持件相对于环的位置。联轴器可以定义一个或多个锥形构件,该锥形构件允许它们插入和/或通过开口,该开口抑制它们的回缩或撤回以允许在二尖瓣环上的环和夹持件的可调节的固定。可选地,各种其他机制,如棘轮齿,棘爪,球形锁定元件,钩/环构件等也可被使用。
介入装置的另一个变化包括至少两个独立的定位在子环空间的展开结构,并被配置为当被展开时啮合二尖瓣的子环表面。独立展开的结构可能位于沿着环的任何一点,例如在瓣的相对侧上,在瓣接合处中,等等。同样地,所述至少两个独立展开的结构可以是相互关联的,如本文所述。此外,该装置可包括联接到所述至少两个独立的可展开结构的假体瓣。
介入装置还可以包括在第一配置和第二配置之间移动的稳定结构。在第一配置中的稳定结构定位在瓣叶之间。第一配置假设的各种形式,包括,例如,灵活的,线性的配置和/或沿轴向延伸的配置。在第一配置中的稳定结构可定位在二尖瓣瓣叶之间至子环空间。在第二个配置中,稳定结构被配置为啮合二尖瓣和/或瓣叶的心室表面。像第一配置一样,第二结构可假设有各种形式,包括近似原生瓣环形状的弯曲配置。此外,该装置可包括联接到所述至少两个独立的可展开结构的假体瓣。
该装置还可以包括定位在心脏瓣的子环空间中的第一和第二稳定结构。假体瓣可联接到稳定结构。
在另一种变化中,介入装置可包括:装置的第一部分,其可定位在子环空间中以及定位在超环形空间中的装置的第二部分。第一部分还可以包括定位在子环空间中的两个横向延伸的翼,其中横向延伸的翼能够压缩至线性的,灵活的配置和横向伸长的,刚性的配置。此外,第一部分和第二部分压缩二尖瓣瓣叶和/或它们之间的环。第二部分可以从第一部分拆卸。此外,灵活的系链可以联接到装置的第一或子环部分。同样,装置可包括当第二部分被定位于子环空间中时,用于在原生瓣位置联接第一部分至第二部分的联接机制。
附图说明
图1示出了用于血管内传送和展开介入装置的导管装配的一种变化的立体图。
图2A和2B分别示出介入装置的一个变化在其低轮廓轴向伸长传送配置的主视图和侧视图。
图2C示出了介入装置在局部扩展的配置中的立体图,其中近端稳定结构和远端的稳定结构是部分地重新配置的。
图2D示出了用于沿着瓣或在瓣之上的展开的配置中的介入装置的侧视图。
图3A至3D示出介入装置的另一种变化的主视图和立体图,该变化合并可选地具有沿延伸构件被定义的啮合特征的延伸构件,以使用相应的延伸部件进行可调节的固定。
图4A和图4B示出了具有由段或节形成的臂构件的介入装置的另一变化的立体图和侧视图,该段或节提供符合瓣的解剖结构的增强的灵活性。
图5A至5C示出了分段或节的臂的各种变化,其可被拉紧到预定义的曲率或形状。
图6示出通过枢轴联接的分段或节的臂构件的另一种变化的立体图。
图7A和7B示出了被形成为单个波形图案的分段或节的臂构件的另一种变化的立体图。
图8示出了臂构件的端视图,该臂构件被形成为具有弯曲的或圆形的边缘以便从导管中的展开以及减少任何潜在的对组织的磨损。
图9A到9C示出了具有一个或多个在各自的臂构件上形成的用于接触瓣叶的特征的介入装置的另一变化的主视图,侧视图和立体图。
图10A至10C示出重新配置的介入装置的局部横截侧视图,该介入装置具有在各自的臂构件上形成的用于附着于瓣叶的特征。
图11A和图11B示出了变化的俯视图,其中臂构件可被配置为锥形或变窄的以最小化瓣叶的干扰。
图11C示出另一种变化的俯视图,其中臂构件可以包括用于为瓣叶提供额外的稳定的延伸或者其中介入装置可以被彼此固定以为了进一步稳定瓣叶。
图12A和12B示出了另一种变化的立体图和侧视图,其中远端稳定结构可以被形成以具有比近端稳定结构的臂构件相对较短的臂构件,当在它们的被展开的配置中时。
图13A至13C示出了另一种变化的透明视图和侧视图,其中远端和近端稳定装配在其展开的配置中相对于彼此相互错开以增加对瓣叶的稳定表面积用于提供对瓣叶的进一步的固定。
图14A至14C示出了介入装置的另一种变化的立体图,该介入装置合并用于沿着子环展开的伸缩臂构件。
图15A至15C示出可以配置成弯曲的臂构件的伸缩臂构件的另一变化的俯视图和仰视图。
图15D和15E示出了装置的另一种变化的立体图,该装置具有两个或两个以上的臂,所述臂垂直于导管或相对于导管成一角度以用于捕获瓣环或在臂构件之间的瓣叶。
图15F示出了另一种变化,其中的瓣下的定位臂可以被配置为从内导管延伸,该内导管相对外导管转移以便在延伸的臂构件之间的组织的压缩。
图16A到16B示出另一种变化的立体图,其中枢纽构件当展开时被沿远离瓣环的臂构件的一侧定位。
图17A到17E示出了另一种变化的侧视图,其中近端和远端稳定结构可被展开和按顺序重新配置。
图18A至18F示出了一个例子的立体图,其中第一介入装置可以被展开并固定在二尖瓣的第一端以及第二介入装置可被展开并固定在二尖瓣的第二端,以使得每个介入装置可围绕瓣的外周弯曲。
图19A和19B示出了有缺陷的二尖瓣的俯视图,其中后部和前部的二尖瓣瓣叶不能合紧以及介入装置如何沿着瓣叶在瓣的相对的端部定位以便于瓣叶的缝接。
图20A示出围绕前部二尖瓣瓣叶的薄的血管壁的解剖视图。
图20B示出利用沿前叶的介入装置的瓣装配的放置的解剖视图。
图21A至21C示出了具有相应的扩展构件的介入装置的侧视图和立体图。
图22A至22F示出了示出了具有相应的扩展构件的介入装置的立体图,扩展构件在瓣上被展开为彼此啮合锁定。
图23A和23B示出了另一种变化的主视图和立体图,其中介入装置可合并弯曲的稳定臂,该臂跨越瓣叶彼此固定。
图23C示出了具有弯曲的稳定臂的介入装置的俯视图。
图24A示出了定位在瓣(例如,二尖瓣)中的图15D和图15E的导管装配,该瓣具有在环和/或瓣叶组织上伸展和压缩的臂构件。
图24B和24C示出了导管装配的局部横截面侧视图,该导管装配展开臂构件并从装配分离以及固定假体至臂构件并通过瓣。
图24D示出了与第一装配并置展开的额外的导管装配的立体图。
图25到图27示出了介入装置的另一变化的侧视图、细节图以及局部横截面侧视图,该介入装置的变化可以被重新配置并通过使用各种锁定机制(例如,螺纹环)锁定到其展开的配置中。
图28示出了另一种变化的主视图,其中臂构件可包括从第一组臂延伸出来的锁定特征来啮合第二组臂以在其展开的配置中固定该装置。
图29A至图30示出了可以被用于锁定介入装置的棘齿锁定机制的局部横截面侧视图。
图30A到31B示出了可以被用于锁定介入装置的卷曲的锁定机制的其它例子的局部横截面侧视图。
图32A至32C示出了另一个锁定机制的横截面侧视图,其中所述锁定构件被拉紧以保持介入装置到其横向伸长的配置的移动。
图33A至33C示出了另一种变化的局部横截面侧视图,其中该锁定机制可包括用于部分地或完全地通过开槽的接收通道的锁定的销。
图34示出了锁定机制的另一种变化的局部横截面侧视图,其采用了螺纹件固定介入装置。
图35A和35B示出了另一种变化的局部横截面侧视图,其中可变形的铆钉可被用作锁定机制。
图36A和36B示出了锁定机制的另一变化的主视图和细节主视图,其中导线或缝线可以被通过介入装置并且可被调节地在枢纽或啮合节之间固定。
图37示出了锁定机制的另一种变化的俯视图,其中环滑过相邻节以锁定结构。
图38A到38B示出了另一种变化的立体图,其中支架或植入瓣装配可以与一个或多个介入装置集成。
图39示出了用于连接瓣装配的锁定机制的侧视图。
图40A至40B示出了可以被固定在一个或多个介入装置上的环的其他变化的俯视图和立体图。
图41A至41D示出了其他变化的立体图和俯视图,其中一个或多个介入装置可包括加固环。
图42A和42B示出了环的变化的立体图,其进一步包括用于固定瓣叶或围绕环的伸出或啮合机制,以将该机制固定于瓣叶或环绕环。
图43A至43C示出了使用一个或多个具有超环形轴环的子环稳定构件的介入装置的另一种变化的侧视图和立体图。
图44A至44F示出了用于在二尖瓣上展开子环稳定构件和超环形轴环的一个例子。
图45A到45E示出了利用具有超环形轴环的远端稳定结构的介入装置的另一种变化。
图46A和46B示出了特征的各种例子的立体图,例如,销,雉堞,突出,凸片等,其可以在介入装置的臂构件上被形成以接触瓣叶或组织表面以用于固定植入介入装置。
图47A至47F示出了心脏的局部横截面侧视图,其中导管装配可以在血管内被推进通过下腔静脉进入病人的左心房并接近二尖瓣。
图47G至47J示出了局部横截面侧视图,其中一个或多个介入装置可根据超环形方法被展开并在二尖瓣瓣叶上重新配置。
图47K示出了如何替换瓣装配可能可选地被传送并固定到介入装置。
图48A至48D示出了另一个例子的局部横截面侧视图,其中导管装配可被血管内地推进通过主动脉瓣并进入病人的左心室。
图48E至48I示出了一个或多个介入装置如何被从超环形方法展开以及以可选的替换瓣装配在二尖瓣瓣叶上重新配置。
具体实施方式
在修复和/或替换有缺陷的心脏瓣(如二尖瓣)中,介入装置可能会被血管内推进到病人的心脏,并在二尖瓣之上或沿二尖瓣展开以影响二尖瓣瓣叶的异常功能。介入装置也可便于以有效方式植入的假体二尖瓣的放置或锚定。在一种变化中,介入装置通常可包括枢转地和/或可旋转地联接到近端稳定结构12的远端稳定结构14。远端稳定结构14可能会被推进经过导管开口,通过二尖瓣环,并从低轮廓,轴向伸长的传送配置,如图2A所示从新配置为横向延伸的展开的配置,如图2C所示。远端稳定机构的展开可能会导致偏压元件的施力,例如扭转弹簧和/或控制构件(如缝合线或导线)的拉紧。近端稳定结构12也可以被按顺序地(如图18A-18F所示)或同时地与远端稳定结构14(如图1C所示)进行展开,使得远端和近端稳定结构12,14可夹住在两个瓣装配12,14之间的瓣叶和/或环以稳定瓣叶和/或提供稳定的可以锚定假体瓣的平台。
如本文所用,术语“远端”和“近端”是相对于沿导管装配2沿导管装配2的轴线。例如,导线9的远端是远离导管装配2的手柄4并且导线9的近端是更接近导管装配2的手柄4的导线9的部分。
如本文所用,“稳定结构”可参阅在环上,环下,沿着环或在环内放置的结构,并可以采取包围环的整个圆周或环的部分圆周的构造。
如本文所用,根据采用的血管内的方法(例如,倒退、前进等),远端和近端的稳定结构可有相对于二尖瓣环的不同的取向。例如,如果倒退方法被采用,远端稳定结构可被超环形地定位,或者如果前进方法被采用,远端稳定结构可被子环形地定位。同样,如果倒退方法被采用,近端稳定结构可被超环形地定位,或者如果前进方法被采用,近端稳定结构可被子环形地定位。
I.装置实施例
图1示出了展开的导管装配2的一种变化的立体图,其可被用于血管内的传送和展开介入装置。一般情况下,导管装配2可以包括被联接到导管轴6(例如,18F-20F直径)的近端的手柄4。导管轴可能包括至少一个导管端口5。导管的远端7可以定义导线9可以通过的开口,以及被联接到介入装置以用于传送和/或从导管展开的传送轴6。
图2A和图2B示出了介入装置10的一种变化的俯视图和侧视图。介入装置10通常包括可枢转地和/或可旋转地联接到近端稳定结构12的远端稳定结构14。在这种变化中,近端和远端稳定结构12,14被示出为具有类似或相同的长度,虽然各自的长度可以取决于所期望的展开配置被改变为非均匀的,如下面进一步的描述。
图2A和2B示出了在低轮询传送配置中的用于存储和从导管腔传送的介入装置10。当介入装置10是在其传送配置中,第一和第二稳定装配12,14都在其轴向伸长的配置中。
在已展开的配置中,每个臂构件可枢转以在横向方向上相对于装配10的纵向轴线压缩臂构件。臂构件可相对于相邻的臂构件的侧面压缩,以使得由此产生的横向伸长的臂构件形状可形成弯曲的或部分弯曲的配置,该配置可跟随二尖瓣环的外周。例如,展开的臂构件可以形成超过60°的跨度延伸。在这种变化中,介入装置10的展开将臂构件从柔性线性排列转换为固定半径的刚性圆弧。
图2C示出了中间配置的一个变化中的装置的一种变化,或在轴向伸长和横向伸长配置之间的装置的一种变化。当第一和第二稳定装配12,14从它们的轴向伸长配置重新配置为它们的展开的横向伸长的配置时,各臂构件和接合构件的枢转安排允许臂和连接件以类似千斤顶的方式横向延伸,如图2C的立体图所示。远端14和近端12稳定结构可以从横向伸长的配置独立地,依赖性地,依次地,同时地,或以其任意组合的方式转换为轴向伸长的配置。图2D示出了在其展开的配置中的介入装置10,其中近端和远端稳定结构12,14都在横向伸长配置中。
近端稳定结构12可以由第一对臂构件16A、16B组成,该可以由第一对臂构件16A、16B臂构件可在第一端通过接头15A,15B枢转地接合到近端啮合节32,以及可在第二端通过接头17A,17B枢转地连接到各自的连接构件18A,18B。虽然第一对臂构件16A,16B可枢转地围绕在平行于节32的宽面的第一面中的连接件15A,15B,在第二端的联接件可枢转地围绕在平行于臂16A,16B的上部部分的宽面第二面中的接头17A,17B,该第二面相对于第一平面可以是横向的(图2D)或倾斜的(例如,图2C)。连接件18A,18B可通过各自的节34A,34B进一步枢转地联接到第二对臂20A,20B的第一端,节34A,34B允许在平行于节34A,34B的宽面的第三平面中的枢转运动。第二对臂20A,20B可被进一步枢转地联接到连接件22A,22B,以使得第二对臂20A,20B的第二端的枢转运动可以围绕在平行于臂20A,20B的上部部分的第四平面中的各自的接头21A,21B发生。连接件22A,22B稍后可枢转地联接到中间啮合节36以使得连接件22A,22B的第二端的枢转运动可以围绕在平行于节36的宽面的第五平面中的节36发生。
远端稳定结构14可类似于近端稳定结构12被联接,其中连接件24A,24B可枢转地联接到中间啮合节36以使得连接件24A,24B的枢转运动可围绕在第五平面内的节36发生。连接件24A,24B可进一步枢转地联接到第三对臂26A,26B的第一端,以使得臂26A,26B的枢转运动可围绕在平行于臂26A,26B的上部部分的宽面的第六平面内的接头25A,25B发生。臂26A,26B的第二端可通过节38A,38B枢转地联接到连接件28A,28B,其中枢转运动可在平行于节38A,38B的宽面的第七平面内发生。第四对臂30A,30B的第一端可以围绕各自的接头29A,29B枢转地联接到连接件28A,28B,以使得臂30A,30B的第一端的枢转运动是在平行于连接件28A,28B的下部面的第八平面之内。每个臂30A,30B的第二端在枢转啮合中枢转地联接到远端啮合节40,该枢转啮合允许枢转运动围绕在平行于节40的宽面的的第九平面中的各自的接头31A,31B。
利用多臂、多节装配具有几个优点。首先,多臂、多节装配提供围绕多个旋转轴的枢转运动的多个平面,从而允许介质装置10的姿态和形状的更大操纵,无论是在其传送还是展开的配置中。介入装置10的灵活性,呈现了一个优点,即它可假设线性的,低轮廓的传输配置,例如,如图2A中所示,同时保持足够的灵活性以在传送和/或展开期间沿着导管腔弯曲。然而,尽管介入装置10的灵活性,一旦介入装置10处于完全展开的配置中,多节和臂的存在也提供了大量刚性,其中每个装配在其横向伸长的配置中。这种刚性可能由在每个环结构的每层中的臂和连接件的等距提供。例如,在图2D的臂和连接件的分布是这样的以使得一旦远端稳定结构14是在横向伸长配置中,第一对臂16A,16B不再能够,例如,围绕各自的接头17A,17B旋转,因为第一对臂16A,16B跨越各自的接头21A,21B。这只是由每个环结构的多臂,多节结构所采用的互锁机制的一个例子。
每个臂构件和连接件可以由任何数量的合适的生物相容材料,例如,不锈钢,各种聚合物,(Elgin,IL),热解碳,硅树脂,聚四氟乙烯(PTFE),或任何数量的其他材料或材料组合,这取决于所期望的结果。臂构件也可由促进组织内生长的材料涂覆或覆盖,如涤纶(Dacron),聚四氟乙烯等。
图3A-3D示出了介入装置的另一种变化,其中臂和连接臂构件沿其周边具有比介入装置10的臂和连接件更一致的圆弧状。介入装置80,其中的每一个近端和远端稳定结构82,84可以由每一个枢转地加入的第一对臂54A,54B和连接件56A,56B和第二对臂58A,58B和连接件60A,60B形成,如前所述,但其中臂构件形成更均匀的和弯曲的形状。同样地,远端稳定结构84可通过中间节联接并由连接件62A,62B和第三对臂64A,64B,并进一步由连接件66A,66B和每个枢转地连接彼此的第四对臂68A,68B形成。图3C和3D示出了第一和第二装配82,84如何沿其各自的节和枢转连接进行枢转以扩大成横向伸长的配置,在图3D中所示。
在另一种变化中,一个或多个臂构件本身可由多个以这样的方式联接在一起的节或段所形成以增加装配的灵活度。一个例子被示于图4A和4B的立体图和侧视图。如图所示,介入装置140可具有近端稳定结构142和远端的稳定结构144,其中至少部分的各臂构件是由多个由灵活伸长的联轴器联接在一起的小节或段146构成。由节或段146构成的臂构件当被放置在瓣叶时可提供装配的更大的灵活性。具有更大的灵活性可允许介入装置更密切地符合瓣的特定的解剖结构并且还可以提供瓣的增强的支撑,以及可能需要更少的心脏腔室内的间隙用于展开。
在其它变化中,其中臂构件是由分段的臂组成,臂构件中的一个或多个可以具有节或段150,其由牵引线152的拉紧而变得刚硬以保持臂构件特定的形状。如图5A的例子所示,牵引线152可延伸穿过每一个节,使得当拉紧时臂构件可变得刚硬性正如节150当释放时彼此压缩一样,允许臂构件变得灵活,如图5B所示。可选地和/或附加地,节或段154的接口端可以被预先形成以具有不同的角度或形状,使得当由牵引线152拉紧时,臂构件假定为预定的形状,如图5C所示。
在其它的具有分段的臂构件的变化,臂构件中的一个或多个可能被形成为通过开槽的连接件162联接的节或段160,开槽的连接件是可旋转的枢纽,允许在单一平面弯曲但在横向平面中提供了刚度,如图6所示。可选地,节或段160可以以交替的方式被弯曲以允许结构的差分弯曲。在图7A的立体图所示的另一种变化中,其示出了臂构件,该臂构件由有图案的构件形成,如从臂构件移除的模压或加工部分168所形成的波浪形图案。这样的结构也可以允许结构的差分弯曲,以使得瓣叶表面的灵活性被提供的同时保持沿着另一平面的一定程度的结构刚度。牵引线152可被通过管腔,该管腔延伸通过臂构件的长度,以使得通过拉紧导线152,臂构件将弯曲成所需的形状,如图7B所示。
此外和/或可选地,臂构件中的一个或全部可具有圆形的或弯曲的边缘170,如图8的端视图所示,以便于装配通过导管54的传送以及减少任何可能的对内部导管表面的磨损或瓣组织的损伤。例如,如果一个具有6毫米直径的输送导管,每个各自的臂构件可具有例如约5毫米的横截面宽度以及例如约2毫米的高度。具有弯曲边缘170可允许装配通过导管腔的转换而不具有沿管腔表面的磨损。此外,各臂构件的弯曲表面和边缘也可能减少接触的二尖瓣瓣叶上的任何潜在的磨损。
在此所述的介入装置的任何变化中,如销190、雉堞192、凸片194、或任何其他的凸出,突起,凸块196,或可能有助于啮合替换的二尖瓣植入物的特征,该二尖瓣植入物可以沿一个或多个臂构件形成,例如当展开时沿着面对二尖瓣的中央区域的臂构件的表面,如图9所示。另外和/或可选地,这些不同的特征可以附加地或者替代地沿臂构件的表面定义,该臂构件直接接触二尖瓣瓣叶。例如,如图10A至10C的横截面侧视图所示,延伸到接触二尖瓣瓣叶的表面的近端和远端稳定结构12,14的臂构件也可结合各种特征。所示的实施例可包括凸起190,凸片192,或销194,其可以在二尖瓣的并置表面上简单地压缩,或者它们可以相应地设计为当放倒二尖瓣瓣叶至锁定配置时以交替方式相对于特征或凸起交错或锁定。此外,这些特征或凸起可被织物或覆盖物覆盖,例如一个成套的套筒,以呈现相对无创伤表面。
在另一种变化中,臂构件可以进一步通过合并狭窄或锥形的臂200而改变,这可能会降低任何可能出现在臂之间的空间中的周漏的风险,如果有的话,如图11A的俯视图中所示。可选地,稳定装配可能包括狭窄的或锥形的臂202,其当他们接近二尖瓣MV的后壁203时逐渐变细或变窄至一点,以使得任何替换瓣可直接接触后壁203而没有任何间隙,如图11B中所示。
图11C示出另一种变化的俯视图,其中臂构件可包括可从后组臂线性延伸或折叠的延伸部204以填补沿后叶PML的空隙。延伸部204可任选地部分地延伸或可相对于并置的延伸部204锁定,如在下面进一步的详细描述。
图12A和图12B示出了另一种变化的立体视图和主视图,其中臂构件可以被配置在可选的安排中。在这种变化中,超环形结构212可以被配置为具有展开的臂构件,该臂构件相对短于近端稳定结构210的展开的臂构件以便于子环装配212的展开而无需干扰腱索CT,或乳头肌PM或左心室壁。缩短的子环臂构件的长度可能会沿任何范围发生变化也可以被配置为相对长于其他变化中的超环形装配210的臂,超环形臂可长到足以完全包围瓣。
图13A至13C示出了在臂构件的配置中的其他变化的立体图和横截面侧视图。如图13A中所示,各臂构件可配置以使得子环和超环形装配12,14以这样的方式径向偏移,使得子环臂构件被定位朝向瓣孔的中心远于超环形臂构件,以使得合并后的臂构件的有效宽度覆盖瓣叶的较大面积,该瓣叶移动瓣叶枢纽点更靠近瓣孔的中心,并限制瓣叶的向上鼓起,例如,在收缩期间,以提高瓣叶有效关闭的能力。
图13B和13C示出了横截面侧视图,其中超环形结构12的臂构件被定位远离瓣孔(在示于图13A中的相反的方向上)的中心。在该变化中,超环形结构12的臂构件可以是大体上相邻于(如图13B所示)子环结构14的臂构件,或者可能只是超出(如图13C所示)子环结构14的臂构件,或者可能与子环结构14的臂构件稍微重叠。这种安排增加了接触瓣叶的面积并有助于确保装配至瓣叶的固定。此外,如图13C中所示,在子环结构被进一步从超环形偏移以具有在它们之间径向设置的间隙,瓣叶可被通过该间隙折叠或卷曲以便进一步加强瓣叶上的夹持。
在其他变化中,除了近端介入装置被修改外,近端介入装置可能被修改。一个变化被示于图14A至14C的立体图中,其示出了可伸缩装配230,该装配可在二尖瓣MV的心室侧上的平面之下的子环形空间中被展开。伸缩装配230可以由连接到枢转装配434的伸缩臂232A,232B构成,枢转装配434可被用于从低轮廓的轴向配置到径向朝向的展开的配置定位臂232A,232B,如图所示。一旦定位为延伸,一个或多个伸缩构件236A,236B可以从每个臂232A,232B相对于彼此以一定角度线性延伸,(取决于所需的配置的锐角,直角或钝角)。可选地,伸缩构件236A,236B可以以弯曲或弧形的方式延伸以在展开时形成弯曲的臂构件。在另一种配置中,伸缩臂可线性延伸同时并置的臂延伸以形成弯曲的展开的臂。使臂向外伸缩仅在瓣叶之下可避免与各种心室障碍物纠缠,如腱索CT和/或乳头肌PM。随着臂完全伸展,近端稳定结构12稍后可被展开以在上瓣叶表面之上固定,如图14C所示。
伸缩臂构件的另一个变化的可见于图15A到15C的端视图和侧视图。这些伸缩臂构件可用于第一或第二装配,或两者兼有之。伸缩装配240通常可以包括伸缩臂242A,242B,其可以是部分弯曲的或直的并且通过枢转装配(图中未示出)彼此联接以允许一个轴向伸长的传送姿态。一个或多个伸缩构件244A,244B可滑动地嵌套在每个段内,如图15C所示,以最小化姿态并保持在其完全展开位置的刚性。构件244A,244B可以分别具有相匹配的曲率并具有它们的彼此重合的纵向轴线以使得臂被展开时,它们可以延伸以沿着二尖瓣的周边,如图15B所示。
图15D和15E示出另一种变化,其中两个或更多的的臂构件可被从内导管54突出至展开的配置,其中臂构件延伸以形成弯曲的或弧形的元件。臂构件垂直延伸或以相对于导管54的一定角度延伸以瓣上地(supravalvularly)和瓣下地(subvalvularly)延伸越过瓣,如二尖瓣,以在环上或在瓣叶周边上压缩。因此,导管54可被插入或直接定位在中间或侧边二尖瓣上,与瓣上和瓣下退出位置接合以使臂构件被放置在,例如,在瓣叶和心室之间的子环空间以及单独的臂构件被放置在,例如,超环形空间以实现环形稳定。
如图15D立体图所示,导管54被示出具有臂构件展开装配261,该装配通过可拆卸的连接件253连接到导管54的远端。展开装配261可以定义两个或两个以上的臂构件通过的开口251,其在传送过程中被定位在导管54内,可以通过展开延长。开口251,在这种变化中,可以被关于展开装配261定位以允许臂构件以弯曲的或弧形的方式从导管54延伸。因此,开口251可被定位相互对立或相对于彼此成一角度。在此示出的例子显示至少两个开口251A和251B关于装配261的圆周彼此相邻定位,以瓣上地展开至少两个臂构件。两个额外的开口251C和251D还被示出彼此相邻并分别以一定距离远离开口251A和251B,以瓣下地展开至少两个臂构件。
如图15E的立体图所示,臂构件255A和255B被示出从导管54推进并通过各自的开口251A和251B延伸。还示出了臂构件257A和257B从各自的开口251C和251D延伸以及相邻于各自的臂构件255A和255B伸出。每一个臂构件在传送至弯曲的或弧形的配置期间,当从导管54内被远端推动时,例如使用推进机制或其他致动器,以及当从导管54腔释放时,可从导管54内的拉直配置中延伸。臂构件可弯曲成接近瓣(例如,二尖瓣)的外周的形状,以使得当被从各自的开口推动时,相对臂构件垂直延伸或以相对于导管54的一定角度延伸并且如图所示的朝向彼此弯曲。比如,臂构件255A和255B从其各自的开口251A和251B延伸,其可以以相对于导管54的一定角度延伸并且也初始地远离彼此延伸,然后弯曲并朝向彼此延伸,以使得展开的形状接近瓣外周。臂构件257A和257B同样可相邻于臂构件255A和255B延伸。
每一个臂构件中也可以形成非创伤性钝端259,从而防止或抑制当臂构件被突出时的组织损伤。臂构件可以由各种生物相容性材料构成,该材料足以提供灵活性且是刚性的或半刚性的足以提供对瓣叶支撑,例如,如镍钛记忆合金,形状记忆合金,不锈钢等。另外,臂构件可以这样构成以形成可充气的管状结构,该管状结构可具有由以足够高的压力被引入臂结构的充气气体、液体或其它介质(例如,盐水,水等)导致的刚性。可选地,沿着臂构件的刚性可以通过用硬化液对臂充气而导致。另外和/或可选地,臂构件可以有任意数量的在臂构件的接触表面上被形成的摩擦元件或突起(倒钩,尖峰等,或本文所描述的任何凸起或元件)以增加臂和层下组织之间的固定。
此外,每个臂构件的长度可以相对于彼此是均匀的或者它们可以取决于设计的配置和瓣的解剖结构而不同。虽然臂构件可能被突出以关于瓣的外周部分延伸,它们可以可选地被突出以向远侧延伸,从而使得各自的远端在彼此之上至少部分地重叠以增加环刚性。
一旦展开,瓣上地定位的臂构件255A,255B可压缩它们各自的瓣下地定位的臂构件257A,257B,以使得环或其间的瓣叶组织可被压缩以及结构性支撑。为了进一步压缩和支撑组织,瓣上地定位的臂构件255A,255B和瓣下地定位的臂构件257A,257B可沿单独的展开装置定位。示于图15F的一个例子显示了导管54具有瓣上地定位的臂构件255A,255B,臂构件255A,255B从其远端伸出,但瓣下地定位的臂构件257A,257B从展开的装配265伸出,展开的装配265连接到被定位在导管54中的单独的展开的导管263。一对臂部件的分离可允许导管263相对于导管54被转换267以进一步相对于瓣压缩或调整装配的定位。
图16A和16B示出了介入装置的俯视图,其中中间枢纽或枢轴254的放置可能是多种多样。例如,如图16A所示,枢纽或枢轴25可定位在外缘上以允许臂构件可能地向瓣的外周延伸。可选地,如图16B中所示,枢纽或枢轴254也可能被尽可能接近二尖瓣口的中心放置以使得臂构件可以尽可能接近二尖瓣MV的内壁被定位以提供支持,而扭曲的瓣叶尽可能少。
II.展开
图17A到17E示出了介入装置的展开的机制的一种变化。远端稳定结构14被推进超出导管鞘54的远端开口262。致动构件264(例如,导线,缝合线,导管等)可以附着到远端稳定结构14,远端稳定结构14可以被拉紧或致动同时保持远端稳定结构14的近端部分接触导管开口104。近端稳定结构12仍然在导管54内受到限制,远端稳定结构14的臂的可以被重新配置以展开,如图17B-17C所示。例如,当致动力被在近端方向上施加到致动构件,远端稳定结构14的远端261在近端方向上被推动而远端稳定结构14的近端263由导管鞘54阻止近端运动,从而拉动远端261朝向近端263。远端稳定结构14完全在横向伸长配置中,如图17C中所示,导管开口262被撤回直到露出近端稳定结构12,如图17D中所示。致动构件264稍后可以被作为对近端稳定结构12的近端部分的逆止器的导管开口104进一步拉紧以重新配置近端稳定结构12到其横向伸长的配置,如图17D和17E中所示。
图18A至18F显示立体图,示出一个或多个介入装置10、10′如何相对于二尖瓣瓣叶被展开,以用于为假体瓣提供瓣叶稳定和/或锚定装置。如图所示,在典型的顺行法(如本文中所讨论的)中的第一介入装置10可以在后壁和前壁二尖瓣瓣叶PML、AML之间被推进,直到远端稳定结构14通过瓣到子环位置。远端稳定结构14可以被首先展开或者近端和远端稳定结构12,14可以被同时重新配置以使得近端和远端稳定结构12,14在环的相对侧上被重新配置到横向伸长的配置,从而压缩瓣叶,如图18A至18C所示。导管54为了清楚起见被省略。
通过相应地重新定位导管并且稍后推进远端稳定结构14′到子环位置以及近端稳定结构12′到超环形的位置,第二介入装置10′远端地定位于导管54内,然后第一介入装置10在第二位置处沿二尖瓣或在二尖瓣上展开。一旦适当地定位,稳定结构12′、14′可以被依次或同时展开以锁定它们各自的瓣叶,如图18D到18F所示。
介入装置的展开可能会沿着二尖瓣的前侧被偏向,如图18F所示。二尖瓣仅在瓣叶的后侧上受肌肉组织MW约束。二尖瓣的内壁,围绕前叶,是由薄的血管壁TVW约束,该薄的血管壁TVW从主动脉道(如图20A所示)的下部分离二尖瓣环。其结果是,小的原生结构支持,如果还有的话,被在二尖瓣环的前侧上提供。因此,通过展开每个介入装置10、10′以使得稳定装配的大部分位于前叶上或沿着前叶,介入装置10、10′提供额外的支持稳定环和/或锚定替换瓣,如图20B所示。为了向导管传送假体瓣提供足够的圆周支撑,介入装置10、10′一起优选包括,例如,至少约60%的二尖瓣的周围。
第一和第二介入装置10、10′可被相应地定位在前和后接合处中,以使得弯曲的臂构件沿着瓣环的外周。此外,虽然两个介入装置10、10′被示出,单个的介入装置可在任一接合处被单独使用。臂也可以取决于所需的配置以不同的角度配置。同样地,两个以上的介入装置也可以被展开。
图19A示出了不正常的二尖瓣MV的俯视图,其中后壁二尖瓣瓣叶PML和前壁二尖瓣瓣叶AMP未能接合,而图19B示出了具有在任一接合处展开和定位的第一和第二介入装置10、10′的二尖瓣MV的俯视图。如图所示,介入装置10,10′可以沿着该环的外周同时保持二尖瓣MV的中心区域不受抑制以使得瓣叶可以被装配支撑从而便于瓣叶的接合。
III.锁定机制
一旦介入装置10已经被展开,装置10可被锁定到展开的形状并在二尖瓣上或沿二尖瓣被植入。为确保该装置仍在瓣叶上被固定,各种锁定机制可以被在装置中实施。
在图21A至21C的主视图和立体图中所示的变化中,延长臂构件通常包括附属构件270,其被附加或连接,例如,沿着臂构件272。附属构件270还可以沿着延伸构件274直线或曲线延伸,该延伸构件具有接触瓣叶的表面的第一无创伤表面。当介入装置被重新配置到其横向伸长的配置,如图21C所示,附属构件270可以沿圆周臂从臂构件以从近端和远端稳定结构82,84的距离延伸。延伸构件274的相对表面可以定义一个或多个凸起或齿276以进入棘齿,该棘齿锁定与在额外的修复装配的第二延伸构件上的对置的相应的凸起组的接合。在所示的例子中,凸起或齿276沿延伸件274被定位,使得构件274的无创伤侧尽可在瓣叶的表面同时凸起或齿276可以远离瓣叶表面延伸。
图22A至22F示出一个或多个介入装置80、80′如何相对于彼此被展开,以使得延伸构件274、274′可被带入啮合接触的例子。如前面所述,在第一介入装置80可在接合处被展开和延伸以使得延伸构件274被沿着瓣环的外周定位,且凸起或齿354远离瓣叶表面定位,如图22A至22C所示。第二修复装配80′稍后可以被展开并在并置于第一装配80的第二接合处扩展以使得第二延伸构件274′也沿瓣环的外周展开。第二装配80′可以具有被定位朝向瓣叶表面的凸起或齿276的以使得它们可进入与第一延伸构件274的啮合接触,如图22D至22F所示。在延伸构件274、274′之间的接合可以被逐步加大或松开以调整装配80、80′的定位以及和赋予下层瓣叶的支撑量。
图23A至23B示出了介入装置的另一种锁定机制变化的主视图和立体图,其中一对弯曲的稳定臂280A、280B可以被与远端稳定结构84结合。通过导管54传送时,弯曲的臂280A、280B可以被折叠,如图23A所示,但可能会向径向向外延伸,以朝向彼此在各自的远端弯曲以使得弯曲的臂280A、280B越过瓣叶或在瓣叶之上延伸,并在瓣叶接合处之间重合。每个弯曲的臂280A、280B的远端部可限定一个或多个开口284,锁定缝合线或导线282可以被通过该开口传递以将臂彼此间固定。以这种方式,跨越瓣的臂的定位还可以提供整个瓣的稳定。
图23C示出用于固定两个或两个以上的介入装置的另一锁定机制的变化的俯视图。一对弯曲的稳定臂280A、280B可与远端稳定结构84结合以将一个介入装置固定至第二介入装置。当通过导管54传送时,弯曲的臂280A、280B可以被折叠,如图23A所示,但可径向向外延伸以符合稳定结构和/或原生瓣的臂的形状。稳定臂280A、280B的长度可以进行调节以超过远端臂的长度,从而延伸经过一个介入装置的远端臂的端部以重叠和/或连接到第二介入装置的远端臂。稳定臂280A、280B可能会放在穿过,如销,钩,垂片,导线,缝合线等任何沿第二介入装置的臂的位置。
图24A至24C示出了另一种变化的立体图和局部横截面测视图,该变化采用了上述图15D和15E所示的装置。围绕二尖瓣壁的一部分可见于图中以供参考。在血管内地推进可操纵的导管至,例如,位于左心房室内的二尖瓣之后,在从心房侧或心室侧的内侧或外侧的接合处,导管54可以被定位,以使得可拆卸的联接器253被定位至少部分地通过该瓣。近端开口251A和251B定位在左心房内的瓣之上以及远端开口部251C和251D定位在左心室内的瓣的下方,超环形臂构件255A和255B可从导管54内被推进到其展开配置的位置,例如,在环AN上的或在后部PML和前二尖瓣瓣叶AML的上表面之上的超环空间,以及瓣下臂构件257A和257B可以类似地从导管54内被推进到展开配置,例如,在环AN上的或在后部PML和前二尖瓣瓣叶AML的下表面之上的子环形空间,并置于它们各自的瓣上的臂构件。如上所述,臂构件可以相对于彼此在长度上是一致的,或者在长度上是非一致的,以及可部分地或完全地越过瓣或在瓣之上沿周向展开。
图24B示出了穿隔地定位在相对二尖瓣的上部位置中的导管54的局部横截面侧图。展开的臂构件可见于展开后及在环AN或瓣叶之上。由于臂构件的低轮廓,特别是瓣下定位的臂构件257A和257B,它们可能会被引入到左心室LV内的子环空间并通过周围的连接到瓣叶的腱索CT而不受抑制。
在保证足够的臂构件放置后,导管54的联接器253可稍后被从保持展开臂构件位置的导管54的轴断开连接。因为臂构件可以具有类似弹簧的质量,同时赋予下层瓣的压缩和/或径向力,他们可以起到在环水平稳定组装的作用。
装配可进一步提供植入瓣假体放置的平台,该假体可被固定到瓣而不需要缝合,如图24C的局部横截面侧视图所示。在具有二尖瓣反流患者的瓣替换的候选人的体内,装配可以被放置,如本文所述,当在荧光镜,超声心动图,以及其他成像引导之下时。臂构件的刚性可提供放置经导管瓣和/或无缝合假体的平台以使得替换瓣假体398可以被血管内地推进及被展开通过瓣,同时对着或沿着加固的瓣环和/或瓣叶或直接对着展开的臂构件锚定。
另一种方法是在直视下或手术下的装配放置。瓣接合处被识别以及导管54的前端放置在子环和超环形区域的交界处。装配还可以被经皮地,经心房地,穿隔地,经顶端地或直接地引入和植入。臂构件的通路继续到由到超环形空间的臂构件的通道跟随的子环空间。所描述的方法和本发明的装置也可以被用来提供在其他位置中的经导管的瓣和无缝合假体(例如,三尖瓣)的展开的稳定的,刚性或半刚性的环。
在另一种变化中,导管54可以以额外的导管54′被采用,其也可推进到相邻于第一导管54的心脏腔室或通过可选的路径以提高环刚性。不管进入路径,定位在关于瓣的第一位置的第一导管54,如在瓣接合处的第一位置,第二导管54′可以同时或依次定位在关于瓣的第二位置,如在相反瓣接合处的第二位置,如图24D的立体图所示。
臂构件255A和255B瓣上展开,以及臂构件257A和257B瓣下展开,附加的瓣上臂构件255A和255B′可能被瓣上展开以及附加的臂构件257A和257B可以被瓣下展开。第二导管54′的附加的臂构件可依次或同时地随着第一导管54的臂构件的展开而被展开。一旦每个臂构件已被展开,每个各自的连接器可以被拆卸以留下臂构件装配在瓣上被植入以及各自的导管54、54′可被撤。如前所述,臂构件稍后可以被左植入以为瓣提供结构支撑或者瓣假体可经过瓣利用臂构件被引入和植入以用于结构支撑。
介入装置的锁定机制的另一个变化被在的图25至27的侧视图中示出,其显示外导管290,该外导管可通过配件,例如,螺纹,具有释放导线的夹持元件,或其它合适的附连机制被暂时联接到介入装置10的近端节298。单独的内导管或导线292可通过外导管290并在腔296内被定义通过装置10至远端定位的内导管配件298,例如,螺纹,具有释放导线的夹持元件,或其它合适的附连机制。内导管或导线292可任选的预成形或配置以持有或保持预定的形状以用于支撑装配10在便于展开的所希望的形状或配置中。当然,内导管或导线292也可以被保持在拉直的和灵活的配置中,这可允许装配10将其自身自然地形成合适的曲线。
在传送期间和在装配扩展之前,内导管或金属丝292可保持在相对于外导管290的稳定的位置。内导管或导线292可被致动或相对外导管290拉紧以展开或延伸装置到其展开配置。为了固定横向伸长的配置,锁定装置的一个变化可以包括位于外导管290的远端的外导管附接螺钉308。附接螺钉308可以定义螺纹部分310,该螺纹部分可被旋转以啮合沿装置的内腔306定义的螺纹306,以使得螺钉308通过内腔306向远端推进直到锁定轴环312相对于装置10的远端固定装置10的近端,如图27所示。
为了从导管中释放装置10,一对或多对具有一个或多个突出300的啮合臂可以包括在内导管290的远端的内导管配件298。突出300可以被保持对着一个或多个沿着内腔296被定义的相应的锁定构件302。贯穿通过内导管292被定义的腔304被定位的释放线被拉紧以允许啮合臂从锁定构件302释放从而允许介入装置10从导管分离,如图26所示。
在介入装置的另一种变化中,图28示出另一种变化的侧视图,其中装置可包括一个或多个各自的沿臂构件的上表面或下表面定义的锁定机制320(例如,销,棘齿,等),以使得当被重新配置到展开的时,锁定机制320被接收到各自的接收通道322中或其他沿着并置臂构件定义的配合结构中。如前所述,拉紧线,缝合线,或导管324可被联接到远端环结构14,以使得当拉紧时,装置可折叠到其横向伸长配置。此外,由于臂构件压缩成横向伸长配置,锁定机制320可被配置成穿透瓣叶以及接收到它们各自的接收通道322中,并自动锁定以固定臂构件到其展开的配置。
可以结合稳定装配使用的不同类型的锁定机制320的实施例可见于图29A和29B的横截面侧视图。在这个例子中,棘齿330可以具有锥形锁332,其被合并到介入装置远端臂构件中。锥形锁332具有直径大于开口334的近端侧翼331。因为附加拉紧导线336被拉动,锥形锁定部分262可被拉动通过一个或多个沿着介入设备被定义的开口334,例如通过枢转机制,直到锥形锁定部分332被完全拉动通过装配以锁定装置在其展开的配置中,正如图29B。图30示出锁定棘齿338的另一种变化的横截面侧视图,但在侧翼331的位置,锥形部分可以定义一个或多个细齿或凸起340以啮合在开口334内的互补特征以增强锁定固定。
图30A和30B示出了另一个锁定机制的横截面侧视图,其可被拉动通过介入装置以锁定装置在其展开的配置中。在这种变化中,介入装置的远端可具有锁定构件342,如导线或缝合线,其被拉动通过介入装置并被卷曲或弄平以形成直接在构件342之上的扩大的夹持件344以防止其通过装配撤出。
图31A和31B示出了另一种锁定机制的横截面侧视图。在这个例子中,当压缩构件342被拉紧时,锁定构件342可通过介入装置被拉紧以及卷边轴环346可以被定位在构件342之上并在构件342之上被卷曲。
图32A至32C示出了另一个锁定机制的横截面侧视图,其中锁定构件342可以被拉紧以保持介入装置到其横向伸长的配置。近端定位的臂构件或近端啮合节32的一个可包括通过诸如弹簧的偏压元件350抵靠锁定构件342的锁定销。由于锁定构件342被向近端拉动通过介入装置,偏压销348可至少部分地,如图32B所示,或完全地,如图32C所示,被插入穿过开口或经构件342远端部分定义的槽352。锁定销348插入穿过开口或槽352,构件342的进一步运动相对于介入装置可能受到抑制,从而锁定装配的配置。
图33A示出了锁定机制的另一种变化的横截面侧视图,其中导线或杆354可以被拉紧以移动近端和远端稳定结构12,14到其扩展配置。当夹头356在开放的配置中时,单独的夹头356可沿导线或杆354滑动以使得一个或多个可移动的锁定构件358在夹头356内径向延伸为导线或杆354提供足够的空间自由移动通过,如图33B所示。一旦介入装置被预期地扩大,夹头356可以被沿着导线或杆354向远端径向向下拉动以及和锁定构件358径向向内移动以在导线或杆354上施加压力,如图33C所示,从而防止夹头356相对于导线354的运动,从而防止或抑制介入装置重新配置到其低轮廓形状。
图34示出了另一种锁定机制的横截面侧视图,其中具有沿其长度方向的螺纹364的紧固件362可以被简单旋转或拧入扩大的介入装置中以锁定近端和远端稳定结构12,14的配置。
图35A和35B示出了另一种锁定机制的横截面侧视图,其中一旦装配被重新配置到其展开配置时,具有可变形的轴环368的铆钉370可以被固定在介入装置上。单独按压366被带至承受变形的轴环368以使得轴环369径向变形以相对于臂构件锁定铆钉370的位置。以这种方式,近端和远端稳定结构12,14的扩大的配置可以被固定。
另一种锁定机制被在图36A和36B的主视图和细节视图中示出,其显示沿稳定结构12,14的近端和远端啮合节32、40的相对位置。在这种变体中,拉紧缝合线或导线372可通过介入装置并使远端和近端啮合节32、40彼此联接。随着缝合线或导线372固定到至少一个节,缝合线或导线372的剩余端可使用一个单向滑结被调节地固定到相对的节以允许介入装置可调节的锁定。缝合线或导线372的剩余端可以,例如,通过近端啮合节52的中央开口332然后向近端地通过第一横向偏移的近端开口376,然后交叉导线372至第二横向偏移近端开口374,它从该开口延伸到的远端啮合节32。在第一方向380上拉动缝合线或导线372,例如,朝向对置的节,可以允许近端和远端稳定结构12,14的拉紧调节同时缝合线或导线372在相对方向382上的滑动被阻止由于彼此啮合的缝合线或导线377的部分377之间的摩擦,从而锁定上部和下部臂构件。此配置还可以允许为结构作出调整以允许从一个特定配置的装置的释放以及装置的重新锁定,如果需要的话。例如,通过释放张力至缝合线或导线372的交叉部分377,将被允许在方向382上滑动以释放远端环结构。
图37的俯视图所示的另一种变化示出了一种变化,其中,联接机制例如滑动缝合线锁384可被推进越过导线或缝合线386,该导线或缝合线从多个装配的臂延伸以在瓣叶上在其横向伸长配置中创建各植入装配12、12′之间的刚性的或安全的连接。当远端和近端稳定结构被展开时是特别有用的,以使得它们相结合的周缘偏向瓣的一端,如图所示,例如,在图18F中。
IV瓣
在描述的任何介入装置的变化中,一个或多个装配可以被单独地或与植入的支架、台架或瓣植入物结合地使用。在图38A和38B的立体图中所示的变化中,被示出的一个例子显示自扩大瓣植入物或支架398如何相对于介入装置被展开。一旦一个或多个介入装置80、80′已经被沿着二尖瓣展开和扩展,导管54可以用从导管54延伸的一个或多个导线或缝合线392被重新定位在二尖瓣上以及被重新定位到一个或多个节52,52′。具有附加的瓣植入物或支架392的推进导管或轴390可从导管54推动,以通过位于沿着植入支架392的开口或环394推送植入物或支架398至其完全展开的形状,通过它可以绕到线或缝合线392延伸以帮助引导植入物398进入啮合装配80、80′的位置。植入物398可以具有被定位以配合瓣开口的腔396,以使得植入物398被固定在瓣的上面,下面,或穿过瓣。每一个节都可以包括一个或多个可伸缩的锁394,其允许开口或环394滑过,并迫使锁402的回缩,如图39中所示。直到开口或环394已清除锁402,在此之后他们可向外延伸以相对于介入装置80、80’锁定瓣398的位置。
为了帮助相对于瓣固定植入物398,一个或多个装配80、80′可包括一个或多个突出400,如前面所述,沿着臂构件面向瓣的中央区域,如在图40A和40B的立体图中所示。突出400可以从臂构件向内延伸并啮合植入物400的侧边或在其中的空隙以抵抗或抑制相对于瓣的植入物398之间的任何运动,如图40A所示。在这个例子中,植入物398将被保持在导管54之内直到定位在介入装置80之内然后被释放以扩大至其内壁的啮合。
相对于彼此固定介入装置80、80′的另一变化以及为任何潜在的在图41A的立体图中所示的植入物的啮合表面。随着一个或多个介入装置80、80′沿瓣展开,具有有一个或多个沿着圆周被定义的开口406的圆周结构的支撑环404可以被从导管54展开并通过穿过开口406延伸的导线或缝合线392被引导。导线或缝合线378可附连到各自的节52、52′,以使得开口406可以直接在节52、52′之上或越过节52、52′滑动。每一个节可包括一个或多个可伸缩的锁402,其允许开口406滑过并迫使锁402回缩,如图39所示直到开口406清零锁402之后,他们可向外延伸以相对于稳定结构80、80′锁定环404的位置。
虽然支撑环404可被包括作为限定经此穿过的开口408的简单的环,如图41C的俯视图所示,该环可被配置成可选的变化。一个例子被示于图41B的俯视图中,其中支撑环403可包括局部环,例如C形夹子,在该环中的夹的末端通过连接线或松紧带405被彼此联接,以使得开口407由结构进行定义。局部环也可以由彼此铰接和连接的独特的段401构成,以使得支撑环403可以符合介入装置80、80′的不同对齐方式或解剖结构中的变化而仍然提供结构支撑。另一变化被示于图41D的立体图中,其中支撑环404具有轴环410,该轴环沿轴向远离环404延伸并定义同时定义经此穿过的开口412。轴环410可以具有臂环404更圆的形状,更高的高度和更小的直径,以便提供圆柱状平台,在其中支架瓣可以被展开。
图42A至图42B示出了可附连到一个或多个介入装置80、80′的额外的环状结构的立体图。在一个变化中,超环形环420,如图42A所示,可包括从环周围向外延伸的多个凸起或突出422或者环或夹具元件424,如图42B所示。
在介入装置的另一种变化中,支撑环可与一个或多个夹持件而不是介入装置结合使用。图43A示出了随着近端和远端定位的夹持件450、450B血管内地传送,环452如何被轴向伸长并定位在导管54内的一个例子的横截面侧视图。图43B示出了展开的环装配的立体图,其中子环夹持件450A、450B在传送过程中可以被从低廓形状配置到展开的形状,夹持件的远端臂在展开的形状中延伸成曲形,弧形或半圆形配置以用于接触瓣叶的瓣下表面。因此,夹持件450A、450B可被由弹性材料,如形状记忆材料(如镍钛合金,形状记忆聚合物等)制成。锁定联轴器458A、458B可以被定位成向各自的夹持件450A、450B近端地延伸。
假体超环形环452的形状或尺寸类似于二尖瓣的外周和/或被配置为支撑植入的瓣。一个或多个开口454A、454B也可以被在环的任一端沿圆周被定义以为穿过每个各自的开口的导线或缝合线456A、456B提供引导。联轴器458A、458B可附连到各自的导线或缝合线456A、456B,以使得当每根到线或缝合线被拉紧,以相对于环452固定每个各自的夹持件450A、450B时,联接器可被在以锁定方式通过环452被定义的各自的开口454A、454B内被接收。联轴器458A、458B可以定义一个或多个锥形构件,其允许它们插入到和/或通过开口454A、454B并与凸缘457啮合以阻止它们的回缩或撤回以允许调节在二尖瓣环上的环452到夹持件450A、450B的固定,如图43C所示。可选地,可以使用各种其他机制,如棘齿,棘爪,球形锁定元件,钩/环构件等联接夹持件450A、450B至环452。
环装配如何被展开的一个例子被示于图44A至44F的局部横截面侧视图中。二尖瓣瓣叶仅为清除起见而未显示。如图44A和44B所示,导管54的远端可放置从左心室LV到左心房LA通过二建的第一接合处以及第一夹持件450A和联轴器458A可被从在瓣叶之下的子环空间中的导管展开以空间重新配置成展开的配置。导管54可被近端地撤出至于左心房LA,以及环452稍后可以从来自由于二尖瓣MV的左心房LA的导管54被逐出,以及随着系绳456A通过在环452中的开口保持连接到第一夹持件450A。导管54被用作环452的逆止器,系绳456A可以被拉紧和拉出以拖动联轴器458A至环开口,以锁定抵住瓣环AN和/或瓣叶的夹持件450A,如图44C和44D中所示。导管54远端稍后可被放置在相反的接合处穿过环452,以展开次于二尖瓣环AN并在左心室LV中的第二夹持件450B。如图44E中所示。系绳456B稍后可被拉紧以拖动第二夹持件450B抵住瓣环AN以及以锁定联轴器458B至环以相对于瓣固定环452的位置,如图44F所示。
在另一种变化中,图45A到45C示出另一个变化,该变化说明环452如何被在与远端稳定结构84的结合中展开。如图45A的横截面侧视图所示,环452可以沿轴向伸长到低轮廓的配置以用于定位在远端稳定结构84和可选的近端稳定结构84′之间的传送。远端稳定结构84可以被从导管54展开并固定在子环位置,如图45B所示。环452然后可被在超环形位置展开并被允许重新配置成其展开的形状。随着系绳456A、456B从导管54通过沿环452的各自的开口,推进导管460可以被展开以推送或推动各自的锁定夹持件462A、462B沿着各自的系绳456A、456B以相对于环452固定第一和第二稳定装配84、84′的位置,如图45C和45D所示,以使得瓣叶固定在其间。图45E示出了锁定夹持件462A的一个例子的横截面侧视图,该夹持件具有用于沿系绳456A(在一个例子中单向地)滑动的腔464,一对啮合系绳456A的成角度的棘爪和用于锁定至沿环452定义的开口的锥形部分。
在此描述的介入装置的任何变化,各种特征或凸起如销180、雉堞18、凸片184,或任何其他的凸起,突出,凸块或可能有助于啮合替换二尖瓣植入物的特征可以被沿一个或多个臂构件形成,如图46A和46B的立体图所示。这些特征可以沿面对二尖瓣的中央区域的臂构件的表面被定义,当被展开或在臂构件的任何其它表面上时,对于增强与假体二尖瓣的啮合可能是有用的。
应当注意的是上述与如图38-46有关的任何环构件,可被配置为接收单独的用于在其中展开的导管传送瓣,或可以具有在其中预先安装的临时或永久瓣。由于相对较长的一段时间内可能在假体瓣的锚定和植入的放置之间消逝,缝合入或以其他方式被固定至本发明的锚定结构中的临时瓣确保过渡期间中的调节。正如其名称所表示的,临时瓣不被打算长期使用,通常被要求使用从大约15分钟到几个小时或最多几天的时间。假体瓣被植入到临时瓣内或可能被在临时瓣被移除之后植入。
V.二尖瓣的血管内方法
在传送和展开一个或多个介入装置10的一个例子中,图47A到47K示出了心脏H内部的局部横截面侧视图以显示典型的顺行法。如图47A所示,导线9可通过使用任何数量的技术,例如,通过下腔静脉IVC或上腔静脉SVC(未示出)被血管内推进通过房间隔AS和进入右心房RA。导管54可以沿导线9被推进并进入右心房RA直到到达房间隔AS的前侧,如图47B所示。一旦导管54到达的心房中隔IAS的前侧,穿刺针和/或扩张器500可以被推进穿过导管以从右心房RA到左心房LA穿过房间隔AS,如图47C所示。在这一点上,导线9可转换为针70和撤回的导管鞘。导管54可被越过导线9推进并进入左心房LA以及进入在不正常的二尖瓣MV上方的位置,如图3D所示。
在一个典型的顺行法中,导管54的远端开口262可被推进至接近二尖瓣MV并可选地被通过二尖瓣后叶PML和二尖瓣前叶AML之间并至少部分地经过二尖瓣环的平面,如图47E所示。第一介入装置10被推进通过导管54至导管54的远端。远端稳定结构14,在其沿轴向的伸长的配置中,可稍后被从导管54向远端推进并在瓣叶之下,然后被展开以使得装配被重新配置到其横向伸长的配置而无需干扰左心室LV内的腱索CT或乳头肌PM,如图47F和47G所示。
随着远端稳定结构14在子环位置展开,导管54的远端被部分地撤回以进一步进入左心房LA以及近端稳定结构12然后可从导管54展开并在超环形位置处重新配置到其横向伸长形状,如图47H和471所示,以使得部分的二尖瓣前叶和后叶PML、AML被固定在稳定结构12、14的臂之间。致动构件504(例如,导线,缝合线,导管等)可被联接到介入装置10并被用于重新配置和/或锁定近端和远端稳定结构12,14到他们的横向伸长的配置,如前所述。
该过程可以被重复以在二尖瓣MV的第二端定位并展开第二介入装置10′,以使得瓣叶被固定在每一个的稳定装配12、14及12′、14′的臂构件之间。随着展开的臂构件压缩其间的瓣叶,展开装配的弯曲的或弧形的形状可以沿着的二尖瓣MV的周边或环形空间,以使得瓣的中央区域保持开放,以及二尖瓣前叶和后叶PML、AML可能充分接合。介入装置可能通过有效地缩短它们的长度和从心脏壁向内移动的它们的枢纽点进一步消除或减少的瓣叶下垂至左心房。
虽然一个或多个介入装置10、10′可以被单独使用,支架,台架,或替换瓣装配506可任选地与一个或多个装配合结合使用。图47J和47K显式了一个例子,其中替换瓣装配506可被进一步通过传送导线或导管508传送通过导管54并被定位在限定于稳定结构12、14和12′、14′之间中央区域中。瓣装配506然后可扩展到啮合稳定结构,以使得瓣装配506的在二尖瓣MV上方、下方,或完全通过二尖瓣MV延伸。预组装、经皮的假体心脏瓣的例子包括,例如,来自美敦力/核瓣有限公司(美国加利福尼亚州尔湾市)的CoreValve RevalvingTM系统,来自爱德华兹生命科学(美国加利福尼亚州尔湾市)的Edwards-Sapien。
图48A至48I示出了用于使用典型的逆行法传送和展开一个或多个介入装置的另一个变化。在这个例子中,导线9通过股动脉方法被血管内推进通过主动脉AO和主动脉瓣AV并进入心脏H的左心室LV,如图48A所示。导管54可沿导线9被推进,直到导管的远端定位在左心室LV内接近二尖瓣MV为止如图48B及48C所示。导管54的远端可选地被推进至少部分地通过二尖瓣MV并进入左心房LA,其中远端稳定结构14可从导管54被展开,如图48D所示,并被重新配置到其扩展的配置以用于接触二尖瓣前叶和后叶PML、AML的超环形表面,如图48E所示。随着远端稳定结构14被展开,导管54可以至少部分地被缩回至左心室LV,其中近端稳定结构12可从导管展开然后重新配置成其展开的配置,如图48F和48G所示。
第二介入装置10′可被展开。第二对近端和远端结构12′、14′可以被从导管54展开并使用相同的子环方法沿二尖瓣MV定位在相对于第一装配12、14的并置位置,如图4H所示。如前所述,支架,台架,或替换瓣装配506可被任选地传送通过导管54并定位通过限定在稳定装配12、14和12′、14′之间的中央区域之间限定并在其中展开,以使得瓣装配506在二尖瓣MV的上方、下方或通过二尖瓣MV延伸,如图48I所示。预组装、经皮的假体心脏瓣的例子包括,例如,来自美敦力/核瓣有限公司(美国加利福尼亚州尔湾市)的CoreValve RevalvingTM系统,或Edwards-Sapien系统。
在此所述的任何的变化和例子中,不同的特征取决于所需的装置和结果可以被各自组合中所述的实施例之间被组合。
上述所公开的发明的应用并不限定于一定的治疗或身体部位,但可包括任何数量的其他治疗和身体部位。上述实施本发明的方法和装置,以及本领域技术人员显而易见的各方面的变化的目的是在本公开的范围之内。此外,例子之间的各方面的变化组合也可以被考虑并被认为是在本公开的范围之内。
Claims (54)
1.一种影响二尖瓣条件的治疗系统,包括:
近端稳定结构,具有可枢转地联接到第二对臂构件的第一对臂构件;
远端稳定结构,具有可枢转地联接到第四对臂构件的第三对臂构件;
其中,所述远端和近端稳定结构通过至少一个节,被可枢转地联接以使得所述远端和近端稳定结构在轴向伸长的配置和横向伸长的配置之间是可配置的。
2.如权利要求1所述的系统,进一步包括导管,在所述导管内的所述装置在其沿轴向伸长的传送配置中是可定位的。
3.如权利要求1所述的系统,进一步包括支架、台架或可锚定至所述装置的瓣植入物。
4.如权利要求1所述的系统,进一步包括一个或多个沿着所述装置的用于固定所述装置的配置的锁定机制。
5.如权利要求1所述的系统,其中在所述远端稳定结构或所述近端稳定结构中的至少一个所述臂构件是由多个节或段构成。
6.如权利要求1所述的系统,其中至少一个的所述臂构件进一步包括一个或多个沿着所述臂构件的表面的凸起或突出。
7.如权利要求1所述的系统,其中所述第三和/或第四对臂构件的长度短于所述第一和/或第二对臂构件的长度。
8.如权利要求1所述的系统,其中所述近端和远端稳定结构彼此径向地偏移。
9.如权利要求1所述的系统,进一步包括附连至所述第一或第二对臂构件的延伸臂构件,所述延伸臂构件具有延伸超过所述第一或第二对臂构件的长度。
10.如权利要求1所述的系统,其中所述远端稳定结构包括至少一对伸缩臂构件,所述伸缩臂构件在轴向伸长的配置和延伸的配置之间是可被重新配置的。
11.如权利要求1所述的系统,进一步包括相对着或沿着所述远端和/或近端稳定结构可定位的瓣假体。
12.一种影响二尖瓣条件的治疗系统,包括:
近端稳定结构,具有可枢转地联接到第二对臂构件的第一对臂构件;以及
远端稳定结构,具有可枢转地联接到第四对臂构件的第三对臂构件;
其中,所述远端和近端稳定结构通过至少一个节,被可枢转地联接以使得所述远端和近端稳定结构在轴向伸长的配置和横向伸长的配置之间是可配置的;
其中在所述远端稳定结构或所述近端稳定结构中的至少一个所述臂构件是由多个节或段构成。
13.一种影响二尖瓣条件的治疗系统,包括:
近端稳定结构,具有可枢转地联接到第二对臂构件的第一对臂构件;以及
远端稳定结构,具有可枢转地联接到第四对臂构件的第三对臂构件;
其中,所述远端和近端稳定结构通过至少一个节,被可枢转地联接以使得所述远端和近端稳定结构在轴向伸长的配置和横向伸长的配置之间是可配置的;
其中至少一个的所述臂构件进一步包括一个或多个沿着所述臂构件的表面的凸起或突出。
14.一种影响二尖瓣条件的治疗系统,包括:
近端稳定结构,具有可枢转地联接到第二对臂构件的第一对臂构件;以及
远端稳定结构,具有可枢转地联接到第四对臂构件的第三对臂构件,其中所述第三和/或第四对臂构件的长度短于所述第一和/或第二对臂构件的长度;
其中,所述远端和近端稳定结构通过至少一个节,被可枢转地联接以使得所述远端和近端稳定结构在轴向伸长的配置和横向伸长的配置之间是可配置的。
15.一种影响二尖瓣条件的治疗系统,包括:
近端稳定结构,具有可枢转地联接到第二对臂构件的第一对臂构件;以及
远端稳定结构,具有可枢转地联接到第四对臂构件的第三对臂构件;
其中,所述远端和近端稳定结构通过至少一个节,被可枢转地联接以使得所述远端和近端稳定结构在轴向伸长的配置和横向伸长的配置之间是可配置的,其中所述第一和第二装配被从彼此径向地偏移。
16.一种影响二尖瓣条件的治疗系统,包括:
近端稳定结构,具有可枢转地联接到第二对臂构件的第一对臂构件;以及
远端稳定结构,具有可枢转地联接到第四对臂构件的第三对臂构件;以及
延伸臂,附连至所述第一或第二对臂构件,所述延伸臂构件具有延伸超过所述第一或第二对臂构件的长度;
其中,所述远端和近端稳定结构通过至少一个节,被可枢转地联接以使得所述远端和近端稳定结构在轴向伸长的配置和横向伸长的配置之间是可配置的。
17.一种影响二尖瓣条件的治疗系统,包括:
近端稳定结构,具有可枢转地联接到第二对臂构件的第一对臂构件;以及
远端稳定结构,具有至少一对伸缩臂构件,所述伸缩臂构件在轴向伸长的配置和延伸的配置之间是可被重新配置的;以及
其中,所述远端和近端稳定结构通过至少一个节的被可枢转地联接以使得所述远端和近端稳定结构在轴向伸长的配置和横向伸长的配置之间是可配置的。
18.一种影响二尖瓣条件的治疗系统,包括:
支撑环,可定位在所述二尖瓣的环之内或之上;
可重新配置的夹持件,可定位在所述二尖瓣的子环空间中;以及
联接机制,用于将所述夹持件联接至所述支撑环。
19.如权利要求18所述的系统,其中所述支撑环在用于在导管之内传送的低轮廓压缩配置和展开的扩展的配置之间是可被重新配置的。
20.如权利要求19所述的系统,其中当展开时,所述支撑环近似所述二尖瓣的形状。
21.如权利要求18所述的系统,其中所述可重新配置的夹持件具有远端稳定结构,所述远端稳定结构具有可枢转地联接到第二对臂构件的第一对臂构件,以使得所述装配在轴向伸长的配置和横向伸长的配置之间是可配置的。
22.如权利要求18所述的系统,其中所述联接机制被附连至所述夹持件的近端部分。
23.如权利要求22所述的系统,其中所述支撑环定义至少一个开口,所述开口的尺寸被设置为可以在锁定配置中接收所述联接构件。
24.如权利要求18所述的系统,其中所述联接机制包括单向地可连接到所述支撑环的锁定构件。
25.一种影响二尖瓣条件的治疗系统,包括:
支撑环,可定位在所述二尖瓣的环之内或之上;
远端稳定结构,具有可枢转地联接到第二对臂构件的第一对臂构件以使得所述装配在轴向伸长的配置和横向伸长的配置之间是可配置的。
26.一种影响二尖瓣条件的治疗系统,包括:
伸长的导管,所述导管在远端处具有可拆卸的连接器,所述连接器相对于彼此在所述连接器的圆周附近,定义两个或两个以上的并置的开口;
当被推进通过至少一个的所述开口时,第一对臂构件在拉直的用于传送的配置和弯曲的配置之间是可重新配置的,其中在所述拉直的配置中的所述第一对臂部件定义相对于导管的角度;以及
当被推进通过至少一个的所述开口时,第二对臂构件在拉直的用于传送的配置和弯曲的配置之间是可重新配置的,其中在所述拉直的配置中的所述第二对臂部件定义相对于导管并相邻于所述第一对臂构件的角度。
27.如权利要求26所述的系统,其中所述臂构件的每一个定义非创伤性远端。
28.如权利要求26所述的系统,其中所述臂构件是可充气的。
29.如权利要求26所述的系统,进一步包括内导管,所述内导管相对于所述导管可纵向转动,所述内导管具有定义两个或更多开口的第二可拆卸的连接器,所述第二对臂构件被推进通过所述开口。
30.一种影响二尖瓣条件的治疗方法,包括:
将具有可枢转地联接至第二对臂构件的第一对臂构件的第一装配,定位在子环位置中;
将所述第一装配从低轮廓传送配置重新配置至对着所述二尖瓣的子环表面的扩展的弯曲的配置;
将具有可枢转地联接至第四对臂构件的第三对臂构件的第二装配,定位在超环形位置中;以及
将所述第二装配从低轮廓传送配置重新配置至对着所述超环形瓣叶表面的扩展的弯曲的配置,以使得瓣叶和/或环在所述第一和第二装配之间被压缩。
31.如权利要求30所述的方法,其中定位第一装配包括将所述第一装配血管内地推进至左心房。
32.如权利要求30所述的方法,其中定位第一装配包括从导管腔内的低轮廓配置展开所述第一装配。
33.如权利要求30所述的方法,其中重新配置第一装配包括推动所述第一装配的远端近端地朝向所述第一装配的近端。
34.如权利要求30所述的方法,其中定位第二装配包括从导管腔内的低轮廓配置展开所述第二装配。
35.如权利要求30所述的方法,其中重新配置第二装配包括推动所述第二装配的远端朝向所述第二装配的近端。
36.如权利要求30所述的方法,进一步包括将所述第一和第二装配锁定在所述压缩的配置中。
37.如权利要求30所述的方法,还包括相对于所述第一和第二装配沿着所述二尖瓣,定位第三装配和联接到所述第三组装的第四装配成并置。
38.如权利要求30所述的方法,还包括对着或沿着所述第一和第二装配并穿过所述二尖瓣以锚定瓣假体。
39.一种影响二尖瓣条件的治疗方法,包括:
沿着子环位置定位将具有可枢转地联接至第二对臂构件的第一对臂构件的第一装配;
沿着超环形位置定位具有可枢转地联接至第四对臂构件的第三对臂构件;以及
将所述第一装配和第二装配从低轮廓传送配置重新配置至对着各自的子环和超环形瓣叶表面的扩展的弯曲的配置,以使得瓣叶和/或环在所述第一和第二装配之间被压缩。
40.一种用于治疗影响二尖瓣条件的医疗设备,包括:
至少有两个可定位在子环空间中并配置为在展开时啮合所述二尖瓣的子环表面的独立的可展开的稳定结构。
41.如权利要求40所述的设备,其中所述至少结构被定位在所述瓣的相对侧。
42.如权利要求40所述的枢纽,其中所述至少两个结构被定位在所述瓣接合处。
43.如权利要求40所述的设备,进一步包括互连结构,其中所述互连结构连接所述至少两个稳定结构。
44.如权利要求40所述的设备,进一步包括在所述至少两个结构之间可联接的假体瓣。
45.一种用于治疗影响二尖瓣条件的经皮装置,包括:
在第一配置和第二配置之间可移动的稳定结构;
其中在所述第一配置中的所述稳定结构在所述二尖瓣的瓣叶之间可被定位至子环空间;以及
其中在所述第二配置中的所述稳定结构啮合所述瓣的所述心室表面。
46.如权利要求45所述的装置,其中所述第一配置是线性的以及所述第二配置被弯曲以近似所述原生瓣环的形状。
47.如权利要求45所述的装置,其中所述第一配置是轴向伸长的以及所述第二配置是横向伸长的。
48.如权利要求45所述的装置,其中所述第二配置中的所述稳定结构啮合所述瓣叶的所述心室和心房表面。
49.如权利要求45所述的装置,进一步包括可联接到所述稳定结构的假体瓣。
50.一种心脏瓣治疗系统,包括:
可在所述心脏瓣的子环空间中独立地定位的第一和第二稳定结构;以及
联接至所述稳定结构的假体瓣。
51.一种用于治疗影响二尖瓣条件的医疗装置,包括:
可在子环空间中定位的第一部分;
可在超环形空间中定位的第二部分;以及
其中,所述第一部分和第二部分被配置为压缩二尖瓣瓣叶和/或其间的的环。
52.如权利要求51所述的装置,进一步包括联接至所述子环部分的灵活的系绳。
53.一种用于治疗影响二尖瓣条件的医疗装置,包括:
可在子环空间中定位的第一部分;
从所述第一部分分离的第二部分,其中所述第二部分是在超环形空间之内是可定位的;以及
当所述第二部分在所述子环空间中是可被定位的时候,用于在原生瓣部位联接所述第一部分至所述第二部分的联接机制。
54.如权利要求53所述的装置,进一步包括两个横向延伸的可在子环空间中定位的翼,其中所述横向延伸的翼能够压缩至线性的,灵活的配置,并且也是横向伸长的,刚性的配置。
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US61/499,630 | 2011-06-21 | ||
PCT/US2011/065627 WO2012087842A1 (en) | 2010-12-23 | 2011-12-16 | System for mitral valve repair and replacement |
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Also Published As
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WO2012087842A1 (en) | 2012-06-28 |
CN103491900B (zh) | 2017-03-01 |
US10517725B2 (en) | 2019-12-31 |
JP2018030028A (ja) | 2018-03-01 |
JP2014506166A (ja) | 2014-03-13 |
EP2654624A4 (en) | 2015-05-27 |
EP2654624A1 (en) | 2013-10-30 |
US20180008413A1 (en) | 2018-01-11 |
JP2016209695A (ja) | 2016-12-15 |
CA3035048A1 (en) | 2012-06-28 |
AU2016235012A1 (en) | 2016-10-27 |
JP6010545B2 (ja) | 2016-10-19 |
CA2822381C (en) | 2019-04-02 |
AU2016235012B2 (en) | 2017-12-07 |
US9770331B2 (en) | 2017-09-26 |
US20230172717A1 (en) | 2023-06-08 |
CA2822381A1 (en) | 2012-06-28 |
CA3035048C (en) | 2021-05-04 |
US20200078174A1 (en) | 2020-03-12 |
US9421098B2 (en) | 2016-08-23 |
EP2654624B1 (en) | 2023-10-04 |
US20160324640A1 (en) | 2016-11-10 |
AU2011349578B2 (en) | 2016-06-30 |
JP6275792B2 (ja) | 2018-02-07 |
AU2011349578A1 (en) | 2013-07-11 |
US20120165930A1 (en) | 2012-06-28 |
US11571303B2 (en) | 2023-02-07 |
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