CN101389371A - 双腔抽吸导管系统 - Google Patents

双腔抽吸导管系统 Download PDF

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CN101389371A
CN101389371A CNA2007800066350A CN200780006635A CN101389371A CN 101389371 A CN101389371 A CN 101389371A CN A2007800066350 A CNA2007800066350 A CN A2007800066350A CN 200780006635 A CN200780006635 A CN 200780006635A CN 101389371 A CN101389371 A CN 101389371A
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barrel portion
flexible
tube
hub
loculus
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CN101389371B (zh
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H·V·李
M·P·斯考罗姆
D·L·王
K·R·玛特森
D·A·斯旺森
K·C·格兰特
J·T·克里
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Boston Scientific Ltd Barbados
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Possis Medical Inc
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    • 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
    • A61M25/0067Catheters; Hollow probes characterised by the distal end, e.g. tips
    • A61M25/008Strength or flexibility characteristics of the catheter tip
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/22Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for
    • 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
    • A61M25/0067Catheters; Hollow probes characterised by the distal end, e.g. tips
    • A61M25/008Strength or flexibility characteristics of the catheter tip
    • A61M2025/0081Soft tip
    • 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
    • A61M2025/0098Catheters; Hollow probes having a strain relief at the proximal end, e.g. sleeve
    • 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
    • A61M25/0067Catheters; Hollow probes characterised by the distal end, e.g. tips
    • A61M25/0068Static characteristics of the catheter tip, e.g. shape, atraumatic tip, curved tip or tip structure

Abstract

一种双腔抽吸导管系统具有抽吸导管、毂和柔性应变释放装置、以及吸入组件。抽吸导管包括多个依次连接的柔性管形部件,各管形部件沿远端方向增加相对柔性,最近端的管形部件连接地从毂延伸并通过柔性应变释放装置。以从近端到远端的顺序,抽吸导管的管形部件依次包括复合管、中间管、双腔管和柔性末端管。双腔管包括偏心地协同定位的大管形部分和小管形部分,它们形成偏心地协同定位的大腔和小腔,以提供最小的横截面。双腔管的远端包括凸出的斜面边缘。当沿着曲折的脉管路径推进时,凸出的斜面边缘和柔性末端管单独地或组合地与血管壁有最小创伤的接触。

Description

双腔抽吸导管系统
技术领域
本发明涉及导管领域,具体来说,涉及具有双腔管的抽吸导管系统,其中,小腔同处于大腔内并偏心于大腔,其中,凸出的斜面边缘和柔性末端管位于双腔管的远端处。
背景技术
现有技术的系统或装置提供了包括一个以上内腔的抽吸导管。一般来说,小腔通常用来通过导向丝,小腔的位置附连地位于大腔外面。如此一结构增加了导管装置的全部横截面,由此,限制了装置通过较小尺寸的血管。形成相邻大腔和小腔的一件式挤压成型件所含有的其它材料增加了装置的体积,由此,不利地限制了抽吸导管的柔性,尤其是在远端部分。
其它系统包括沿着长度具有相同的柔性的管状截面,由此限制了在曲折路径中的柔性。双腔导管远端部分处的形状常常对于容易地和最小创伤地沿着血管或静脉通过不利,且常发生通道磨损。本发明克服使用现有技术的抽吸导管或抽吸导管系统中所遇到的各种困难。
发明内容
本发明总的目的是提供一种双腔抽吸导管系统。
根据本发明一实施例,提供一种双腔抽吸导管系统,其包括毂、柔性应变释放装置、抽吸导管和吸入组件,吸入组件附连到抽吸导管并与抽吸导管连通。抽吸导管包括多个依次连接的柔性管形部件,各管形部件沿远端方向增加相对柔性,最近端的管形部件连接地从毂延伸并通过柔性应变释放装置。以从近端到远端的顺序,抽吸导管的管形部件依次包括中间管、双腔管和柔性末端管,每个管形部件具有一个或多个与其相关的内腔。双腔管包括大半径管形部分和小半径管形部分,大半径管形部分和小半径管形部分偏心地协同定位,由此,分别勾画出大腔和小腔,其中,小腔偏心于大腔,并基本上位于大腔的总的轮廓之内。双腔管包括具有凸出的斜面边缘的远端。凸出的斜面边缘和柔性末端管可单独地或组合地便于抽吸导管通过血管、静脉等的曲折路径。柔性末端管在邻近于凸出的斜面边缘并部分地被其包围的位置处,固定到双腔管的小半径管形部分以便与小腔连通。小腔包括位于近端的出口端。柔性末端管和小腔形成用于容纳导向丝的路径,由此,导向丝可在远端处进入柔性末端管腔中,并在位于近端的出口端处伸出小腔。大半径管形部分的大腔用来与吸入组件合作从血管、静脉等中抽出松散的物质。荧光镜检查环或标记带围绕小半径管形部分的远端定位。吸入组件包括注射器、旋塞阀、延伸管和连接器,以提供低压源来通过毂和抽吸导管抽出碎片、血栓、栓子等。
本发明的一个重要方面和特征是,双腔抽吸导管系统具有吸入组件、毂和应变释放装置、以及抽吸导管。
本发明的另一个重要方面和特征是,抽吸导管沿着其长度部分从近端到远端不断增加柔性。
本发明的还有另一个重要方面和特征是使用一种抽吸导管,该抽吸导管具有大半径管形部分和相交的小半径管形部分,它们共同地和偏心地协同定位,由此,勾画出大腔和小腔。
本发明的还有一个重要方面和特征是使用具有共同地和偏心地协同定位的大腔和小腔的抽吸导管,其中,小腔偏心于大腔并基本上位于大腔总轮廓之内。
本发明的另一个重要方面和特征是使用偏心地协同定位的大的和小的管形部分,以提供最小横截面的抽吸导管。
本发明的还有另一个重要方面和特征是,双腔管具有凸出的斜面边缘远端,其有益于容易地和最小创伤地通过曲折路径的血管或静脉。
本发明的还有另一个重要方面和特征是使用柔性末端管,在邻近于凸出的斜面边缘并部分地被凸出的斜面边缘包围的某一位置处,该末端管在双腔管的远端部分处固定在小半径管形部分上并围绕小半径管形部分,以与小半径管形部分的小腔连通。
本发明的还有另一个重要方面和特征是使用小半径管形部分和相连的柔性末端管,以容纳和通过导向丝。
本发明的还有另一个重要方面和特征是使用双腔管的近端的扩口部分,以容纳中间管的远端。
在简要描述了本发明的一个实施例和提及了本发明的某些重要方面和特征后,本发明的主要目的是提供一种双腔抽吸导管系统。
附图说明
参照以下的详细描述并结合附图进行考虑,将会容易地认识到本发明其它的目的和许多相随的优点,并更好地理解它们,在全部的附图中,相同的附图标记表示相同的部件,其中:
图1是根据本发明的双腔抽吸导管系统的平面图;
图2是双腔抽吸导管系统的抽吸导管、毂和应变释放装置的分解的立体图;
图3是双腔抽吸导管系统的毂和应变释放装置的分解的剖视图;
图4是双腔抽吸导管系统的毂和应变释放装置的组装的剖视图;
图5是双腔管的远端和与其组合一起使用的相关部件的分解的立体图;
图6是沿图1中线6-6截取的双腔管远端的剖视图;
图7是沿图1中线7-7截取的放大的剖视图;
图8是沿图7中线8-8截取的双腔管的剖视图;
图9是沿图7中线9-9截取的中间管的剖视图;
图10是图7中部件的组装剖视图;
图11示出导向丝通过双腔管的路径;以及
图12示出具有曲折路径的血管和柔性末端管以及双腔管远端部分处凸出的斜面边缘,它们位于过剩的碎片、血栓、栓子等部位处。
具体实施方式
图1是根据本发明的双腔抽吸导管系统10的平面图,其包括毂12、应变释放装置14、抽吸导管16以及吸入组件18。抽吸导管16包括复合管20、诸如佩拜克斯(Pebax)那样的热塑性或其它合适材料的中间管22、柔性的双腔管24(较佳地是诸如Pebax那样的热塑性或其它合适材料)、以及柔性的末端管26。复合管20的近端延伸通过应变释放装置14并固定到毂12上,而复合管20的远端连接到中间管22的近端并与其连通。复合管20可由层间放置平的编织不锈钢丝的多层聚酰亚胺制成,并设计成具有薄壁或最大内腔以使抽空注射器达到最大的抽空力。复合管20包括编织的结构以提高强度和扭转强度,但也可有效地用其它方式形成,例如,使用诸如纤维、绞股线、环、缠绕线的加强部件,或它们组合的加强部件。双腔管24的近端包括扩口部分28以便容纳中间管22的远端。双腔管24的远端包括远端,其连接到柔性末端管26并部分地与末端管连通。双腔管24的远端部分还包括凸出的斜面边缘32。吸入组件18提供低压以通过抽吸导管16抽出碎片、血栓、栓子等,吸入组件18包括可锁定的注射器34、连接到注射器34一端上的旋塞阀36、将延伸管40一端连接到旋塞阀36上的连接器38、以及将延伸管40一端连接到毂12近端的连接器42。
抽吸导管16的设计中包含有不同的刚度和柔度,其中,部件沿远端方向变得更加柔性。为了示例和加以说明,复合管20长度可以是80-120厘米,且复合管20是抽吸导管16的最刚的部件。中间管22的长度可在15-25厘米范围内,并且可由硬度为72的Pebax构成,其比复合管20更柔软。双腔管24长度可以是25厘米,并且可由硬度为63的Pebax构成,其比中间管22更柔软。柔性末端管26可以是硬度为25-55较软的Pebax构成,其中,当进入到机能障碍的目标位时,可减小创伤。
图2是双腔抽吸导管系统10的抽吸导管16、毂12和应变释放装置14的分解的立体图;而图3是双腔抽吸导管系统10的毂12和应变释放装置14的分解的剖视图。现描述图2和3中所示的毂12和应变释放装置14。毂12一般呈圆柱形,较佳地用塑料或其它合适材料加工而成,其包括从主体46延伸出来的锥形延伸部分44。内腔48沿着毂12中心线延伸,延伸通过锥形延伸部分44和主体46而相交和连通于空腔50,所述空腔50可以是锥形,位于毂12的相对端处,那里,空腔50也沿毂12中心线延伸。连接凸缘52位于毂12主体46的一端。孔54延伸通过锥形延伸部分44相交于毂12的内腔48,以提供让粘结剂通过和/或保留粘结剂的通道,从而接触和固定复合管20的近端,该复合管20的近端也延伸通过应变释放装置14的内腔56,延伸到和部分地容纳在毂12内腔48内,如图4所示。应变释放装置14由柔性塑料或其它合适材料构成,其包括沿应变释放装置14中心线延伸的内腔56,以相交于也沿应变释放装置14中心线延伸的锥形的延伸插口58。锥形的延伸插口58的形状与毂12的锥形延伸部分44的形状互补,以确保合适的互配,如图4所示。可使用粘结剂或其它合适的方法,将毂12的锥形延伸部分44附连在锥形的延伸插口58内。握持突片60和62从毂主体46的外围向外延伸,以有助于抽吸导管16的操纵。
图4是双腔抽吸导管系统10的毂12和应变释放装置14的组装的剖视图。特别显示出的是,复合管20与组装的毂12和应变释放装置14的相互关系。
图5是双腔管24的远端和与其组合一起使用的相关部件的分解的立体图。双腔管24最好是挤压成型结构,其包括大半径的管形部分64和相交的小半径管形部分66。管形部分64和66共同地和偏心地协同定位,由此,分别勾画出大腔68和小腔70。小半径管形部分66形成圆形的小腔70。大半径的管形部分64的壁与小半径管形部分66的壁相交而具有共同的结构,其中,大半径的管形部分64内表面的较大部分和小半径管形部分66外表面的较大部分的组合形成勾画出大腔68的结构。大半径的管形部分64和小半径管形部分66在各远端处被截头。大腔68的截面大小是大半径的管形部分64内表面和小半径管形部分66外表面之间的差。小腔70偏心于大腔68并基本上位于大腔68的轮廓之内。双腔管24的剖视图显示在图8中。双腔管24的远端部分,具体来说是大半径的管形部分64,包括凸出的斜面边缘32,以便于沿着具有曲折路径的血管、静脉等通过。在邻近于凸出的斜面边缘32并部分地被凸出的斜面边缘32包围的位置处,包括内腔72的柔性末端管26固定和邻接双腔管24远端部分处的小半径管形部分66,以与小半径管形部分66的小腔70相连通。纵向定向的狭槽74和76形成在小半径管形部分66外表面和大半径的管形部分64内表面之间,以便容纳辐射透不过的标记带78和在小半径管形部分66上和围绕小半径管形部分66的柔性末端管26。
图6是沿图1中线6-6截取的剖视图,显示出柔性末端管26和连接到小半径管形部分66远端部分上的辐射透不过的标记带78之间的关系。辐射透不过的标记带78对准并固定在小半径管形部分66上和围绕小半径管形部分66。柔性末端管26对准并固定在辐射透不过的标记带78和小半径管形部分66的远端部分上和围绕着两者,由此,提供柔性末端管26内腔72与小半径管形部分66小腔70的连通,因此,形成让导向丝通过其中的方便的导管。图中还示出大半径管形部分64在双腔管24远端处的凸出的斜面边缘32的轮廓。凸出的斜面边缘32包括位于假想平面各侧上的凸出的斜面边缘部分32a和32b(图5),所述假想平面垂直地沿着双腔管24的纵向轴线并通过该轴线延伸。小半径管形部分66的最远端较佳地包括凸出的斜面边缘部分32c,其较佳地与与曲率一致和等于该曲率,即,凸出的斜面边缘32的凸出的斜面边缘部分32a和32b的斜面的半径。双腔管24的凸出斜面边缘部分32a和32b促使双腔管24远端最小创伤地通过脉管系统,因为其有凸出的结构。小半径管形部分66的凸出的斜面边缘部分32c还有利于导向丝进入通过小半径管形部分66远端和柔性末端管26之间重叠的共同部分的起始点。
图7是沿图1中线7-7截取的放大的剖视图,显示出双腔管24近端处的扩口部分28和中间管22的远端。双腔管24近端处的扩口部分28容纳中间管22的远端。
图8是沿图7中线8-8截取的双腔管24的剖视图,显示出形成小腔70的小半径管形部分66与形成大腔68的大半径的管形部分64的相互关系。
图9是沿图7中线9-9截取的中间管22的剖视图。
图10是图7中部件的组装剖视图,其中,中间管22的远端被容纳在双腔管24的扩口部分28内。为了示例和说明,导向丝82显示为延伸通过并从小半径管形部分66的小腔70中伸出。
图11示出导向丝82通过双腔管24的路径,其中,导向丝82通过柔性末端管26的内腔72并通过双腔管24的小半径管形部分66的小腔70,而在紧靠中间管22的双腔管24的近端部分伸出,如放大的图10中所示。
图12示出柔性末端管26和双腔管24远端部分处的凸出的斜面边缘32,它们在靠近过剩的碎片、血栓、栓子(诸如颗粒86所表示)等部位处沿着血管84的内壁柔性地接合曲折的路径。在外形轮廓形式中还示出伸出的现有技术抽吸导管装置的远端的外形,其具有简单斜面端88或直切端90。由于所述的如此装置的几何形状,可致使如此伸出的几何形状接触到血管84的壁,且可不幸地导致与血管84的壁磨损和创伤性地撞击。
操作模式
现将具体地参照图10、11和12,并总的参照所有的图,来描述本发明的操作模式。
例如利用传统的引入器将诸如导向丝82的合适规格导向丝插入到脉管内(诸如用血管84代表),并合适地前进到或超过碎片、血栓、栓子等的区域(诸如颗粒86所表示)。抽吸导管16本身或带有连接在其上的吸入组件18的抽吸导管16,连同使用传统的引入器进行操纵,而造成与导向丝82近端接合,由此,导向丝82的近端进入并被柔性末端管26的内腔72所容纳,其中,柔性末端管26通过并围绕导向丝82。导向丝82的近端然后被小半径管形部分66的小腔70所容纳。导向丝82直接地被双腔管24的小半径管形部分66容纳,而间接地被双腔管24内部容纳,因为小半径管形部分66基本上位于双腔管24的大半径管形部分64内。当包括双腔管24、中间管22以及复合管20的抽吸导管16向远端推进时,导向丝82的近端在中间管22远端附近处伸出小半径管形部分66的近端。当抽吸导管16沿血管84内的曲折路径向远端推进时,包括沿导向丝82导向双腔管24的小半径管形部分66,柔软和小轮廓的柔性末端管26轻轻地和柔性地以最小创伤接触曲折路径的血管84的壁。双腔管24的凸出的斜面边缘32的凸出的斜面边缘部分32a和32b可轻轻地和以最小创伤接触曲折路径的血管84的壁。
柔性末端管26和双腔管24的流线型凸出的斜面边缘32的组合,提供双腔管24远端通过具有曲折路径的血管84时最小创伤的通道。这种与双腔管24紧凑轮廓的关联性提供高度柔性和操纵性的抽吸装置。
注射器34和旋塞阀36以及吸入组件18的其它部件的结合,对毂12和抽吸导管16提供了有控制的真空,以便从脉管部位中抽去碎片、血栓、栓子等物。
部件清单
10    双腔抽吸导管系统
12    毂
14    应变释放装置
16    抽吸导管
18    吸入组件
20    复合管
22    中间管
24    双腔管
26    柔性末端管
28    扩口部分
32      凸出的斜面边缘
32a-c   凸出的斜面边缘部分
34      注射器
36      旋塞阀
38      连接器
40      延伸管
42      连接器
44      锥形延伸部分
46      主体
48      内腔
50      空腔
52      连接凸缘
54      孔
56      内腔
58      锥形延伸插口
60      握持突片
62      握持突片
64      大半径管形部分
66      小半径管形部分
68      大腔
70      小腔
72      内腔
74      狭槽
76      狭槽
78      辐射透不过的标记带
80      内腔
82      导向丝
84      血管
86      颗粒
88        简单斜面端
90        直切端
对本发明可作出各种修改而不脱离本发明的明显范围。

Claims (4)

1.一种双腔抽吸导管系统,包括:
a.毂和柔性应变释放装置;
b.抽吸导管和吸入组件,所述吸入组件附连到所述抽吸导管并与所述抽吸导管连通;
c.所述抽吸导管包括多个依次连接的柔性管形部件,各管形部件沿远端方向增加相对柔性,最近端的管形部件连接地从所述毂延伸并通过所述柔性应变释放装置;
d.以从近端到远端的顺序,所述抽吸导管的所述管形部件依次包括复合管、中间管、双腔管和柔性末端管,每个管形部件具有一个或多个与其相关的内腔;以及
e.所述双腔管包括大半径管形部分和小半径管形部分,所述大半径管形部分和小半径管形部分偏心地协同定位,由此,分别勾画出大腔和小腔,其中,所述小腔偏心于所述大腔,并基本上位于所述大腔的总的轮廓之内,所述双腔管的远端具有凸出的斜面边缘,所述凸出的斜面边缘和所述柔性末端管单独地或组合地用来便于通过血管、静脉等的曲折路径。
2.如权利要求1所述的系统,其特征在于,所述柔性末端管在邻近于所述凸出的斜面边缘并部分地被所述凸出的斜面边缘包围的位置处,固定到所述小半径管形部分以便与所述小腔连通,所述小腔包括位于近端的出口端,由此,所述柔性末端管和所述小腔形成用于容纳导向丝的路径,所述导向丝进入柔性末端管腔中,并在所述位于近端的出口端处伸出,所述大半径管形部分的所述大腔用来与所述吸入组件合作从血管、静脉等中抽出松散的物质。
3.如权利要求1所述的系统,其特征在于,荧光镜检查环或标记带围绕所述小半径管形部分的远端定位。
4.如权利要求1所述的系统,其特征在于,所述吸入组件包括注射器、旋塞阀、延伸管和连接器,以提供低压源来通过所述毂和抽吸导管抽出碎片、血栓、或栓子。
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EP1986728A4 (en) 2011-01-05
EP1986728A2 (en) 2008-11-05
CN101389371B (zh) 2012-02-29
WO2007100585A2 (en) 2007-09-07
WO2007100585A3 (en) 2008-05-02
EP1986728B1 (en) 2012-04-11
ATE552877T1 (de) 2012-04-15
JP3156227U (ja) 2009-12-24
US7608063B2 (en) 2009-10-27

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