CN1600281A - 带有一体的可移动定位件的皮下自连接注射口 - Google Patents

带有一体的可移动定位件的皮下自连接注射口 Download PDF

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CN1600281A
CN1600281A CN 200410069447 CN200410069447A CN1600281A CN 1600281 A CN1600281 A CN 1600281A CN 200410069447 CN200410069447 CN 200410069447 CN 200410069447 A CN200410069447 A CN 200410069447A CN 1600281 A CN1600281 A CN 1600281A
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injection port
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housing
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fixture
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CN100418495C (zh
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S·P·康伦
R·P·纳古尔斯
J·V·亨特
R·T·拜拉姆
D·舒尔策
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Ethicon Endo Surgery 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
    • A61M39/00Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
    • A61M39/02Access sites
    • A61M39/0208Subcutaneous access sites for injecting or removing fluids
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F5/00Orthopaedic methods or devices for non-surgical treatment of bones or joints; Nursing devices; Anti-rape devices
    • A61F5/0003Apparatus for the treatment of obesity; Anti-eating devices
    • A61F5/0013Implantable devices or invasive measures
    • A61F5/005Gastric bands
    • A61F5/0053Gastric bands remotely adjustable
    • A61F5/0056Gastric bands remotely adjustable using injection ports
    • 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
    • A61M39/00Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
    • A61M39/02Access sites
    • A61M39/0208Subcutaneous access sites for injecting or removing fluids
    • A61M2039/0223Subcutaneous access sites for injecting or removing fluids having means for anchoring the subcutaneous access site

Abstract

一种自连接注射口,带有一体的可移动的定位件,其可从未展开状态移动到与组织结合的展开状态。定位件可径向或切向地布置,并转动刺入筋膜。定位件可以是刚性的或是可弹性变形的。

Description

带有一体的可移动定位件的皮下自连接注射口
相关申请
本申请要求享有2003年6月16提出的题目为“可调节胃束带的流体注射口”的临时专利申请No.60/478,763的优先权,本文参考引用其内容。本申请还参考引用了下列共同未决的同日提出申请的美国专利,即2003年12月19日提交的申请号为No.10/741,127的专利(题目为:带有外加定位件的皮下注射口,发明人为Conlon和Hunt);和2003年12月19日提交的申请号为10/741,868的专利(题目为:带有一体的定位件的皮下自连接注射口,发明人为Conlon和Kolata)。
技术领域
本发明总体上涉及一种可手术植入的流体注射口,具体涉及到定位皮下周围连接的注射口的固定件和方法。本发明特别涉及用于可调节胃束带的注射口,虽然本发明的固定件可用于许多不同的皮下连接器件,包括用于刺入血管如注射药物和抽血的注射口。
背景技术
注射口置于身体皮下,用来将流体注入身体,如注入药物,抽血和许多其他应用,这些应用包括可调节的胃束带。从20世纪80年代早期,就已经应用胃束带来有效地替代病态肥胖症的胃旁路和其他不可逆转的手术减体重治疗。胃束带围绕患者胃的上部,限制食物通过胃的上部到达胃的下部。当胃的尺寸适当时,保留在胃上部的食物可提供饱的感觉,不鼓励过度进食。但是,如果初始调节不当或胃随时间过去出现变化可导致胃出现不当尺寸,这就要求调整胃束带。否则,当胃过小不能正常通过食物时患者将产生呕吐和感到不舒服。在另一极端情况,胃可能过大不能减缓食物在胃上部的移动,导致胃束带的目的不能实现。
胃束带能够锁定位置以设定胃束带的外径,胃束带的可调节性通过向内充气的气囊来实现,类似于血压计套,但通过流体注入口注入气囊中的是如盐水这样的流体,以得到希望的直径。由于可调节的胃束带可长时间地保留在病人身体内,流体注射口一般置于皮下以防止感染,例如位于胸骨的前面。对可调节的胃束带的流体量进行调节则是插入Huber针头通过皮肤进入注射口的硅隔膜来实现。一旦拔出针头,隔膜产生的压载荷使隔膜密封住孔。通过柔性通道连通注射口和可调节的胃束带。
传统的对用于血管的流体注射口进行固定的手术技术要对绕底凸缘周边间隔设置的孔进行缝合。尽管总的来说是有效的,但已证明缝合常常是困难和耗时的,对用于病态肥胖症的可调节胃束带的注射口更是这样。厚度很大的脂肪组织位于皮下,使得手术人员试图对深度凹下的组织(如5到10厘米)进行缝合固定注射口时难以实施,通常要求10到15分钟才能完成。此外,如果注射口未能适当固定,注射口可能出现翻动,使后续的注射难以进行或不能进行。
近来,Pier的德国专利申请No.197 51 791.9介绍了一种手术钉合器,其中帽状的注射口包括绕周边间隔设置的切向对齐的线性槽。各线性槽的两个孔容纳传统的弯曲金属丝钉。钉合器可使钉保持在适当位置,并设有向下运动的形成件,可压在各个钉的肩部。由于线性槽中孔的位置,使得钉的尖端向内变形将下面的组织抓牢。
Pier的钉合器通过变形使钉进行连接,如果初始位置不对或要取出胃束带,已经证明了这样使释放难以进行。此外,因为该装置要永久变形多种式样的不锈钢或钛钉,要求有更复杂的机构,以能够向外科医生提供足够的优越机械性能,使钉容易成型。Pier的注射口还要求定制的钉合器把手,该把手不能用于其他目的。对于许多外科医生这可能是不必要的费用,这些外科医生不会进行许多的Pier注射口设置手术。
尽管定制的注射口钉合器相对缝合有优越性,比如在完成连接所用的时间上,相信其他连接注射口的方法会具有其他的优点或特点,这些优点或特点可能是传统的缝合或使用弯曲金属线钉的钉合器不具有的。
因而,存在着对适合皮下连接的并能够快速连接和长期固定的流体注射口的很大需求。
发明内容
如本文所介绍的,本发明提供了一种注射流体到体内的注射口。所述注射口包括可置于皮肤之下的壳体,还包括接受针头的机构。至少一个定位件一体地连接到所述壳体并可相对壳体移动。当定位件位于相对壳体的第一位置时处于未展开状态,位于相对壳体的第二位置时处于展开状态,可与壳体附近的组织结合。
附图说明
与本说明书结合并构成其中一部分的附图显示了本发明的许多方面,并同说明书一起介绍了本发明的原理。附图中:
图1是显示连接到缠绕在胃上部的可调节胃束带的根据本发明的注射口的示意图;
图2是图1所示的注射口的透视图;
图3是沿图2的垂直剖面3-3的放大剖视图;
图4是可转动的定位件的透视图;
图5是注射口连接组件的透视图,图1所示的注射口安装到施加器;
图6是图5的注射口连接组件的分解图;
图7是沿图6的剖面7-7的基体剖视图;
图8是图5的施加器组件的基体的透视图;
图9是图5的施加器组件的柱塞的透视图;
图10是图5的施加器组件沿图9中的剖面10-10的剖视图;
图11是图5所示的注射口连接组件在植入前的侧视图;
图12是图5所示的注射口连接组件在植入后和将注射口从施加器组件释放之前的侧视图;
图13是沿图12的剖面13-13的注射口连接组件的剖面图;
图14是图13的局部放大剖视图,显示了弹性的定位件和注射口;
图15是显示促动斜面和弹性定位件促动件的局部放大剖视图;
图16是根据本发明的注射口连接组件的可选择实施例的侧视图;
图17是图16的施加器组件的柱塞的透视图;
图18是图16所示注射口连接组件的连接端的部分侧视图;
图19是图16的施加器组件的端面视图;
图20是图16的施加器组件的连接端的部分放大剖视图;
图21是根据本发明的自连接注射口的可选择实施例和与其相连的施加器的透视图;
图22是图21的注射口的放大侧视图,部分剖开显示出可转动的定位件;
图23是沿图21的剖面23-23的施加器的部分剖视图;
图24是图21的注射口连接组件和施加器在植入前的侧视图,部分剖开以显示可转动的定位件;
图25是与图24类似的侧视图,施加器稍微转动,显示植入开始;
图26是与图25类似的侧视图,施加器进一步转动,显示植入完成;
图27是注射口的另一实施例的侧视部分剖视图,带有一体的可移动定位件;
图28是用于植入图27所示注射口的施加器的外管的侧视剖视图;
图29是图28的施加器的端部视图;
图30显示了就要进行植入的位于图29施加器的图28的注射口;
图31显示了收回植入的图30的注射口和施加器;
图32是带有一体的可移动定位件的注射口的另一实施例的透视图;
图33是图32的注射口定位件的部分侧视图;
图34是带有处于展开位置的定位件的图32的注射口的侧视图;
现在详细参阅本发明的优选实施例,其示例在附图显示。
具体实施方式
现在详细参考附图,其中类似的数字在各附图中表示相同元件,图1显示出可调节胃束带10围绕胃12的上部,其保持在适当位置是通过两端连接到一起和胃12的部分14通过缝合连接到胃上而在可调节的胃束带10上延伸。柔性管路16的一端与气囊(未显示)内腔流体连通,另一端与注射口1 8的内腔流体连通。在可调节胃束带10绕一部分胃植入时,相距一定距离的注射口18也植入适当位置,一般是位于直肌鞘(rectus sheath),以便通过Huber针头进行皮下注入。
参考图2和3,如已经知道的,注射口18包括壳体20,其带有从一端向外延伸的环形凸缘22。短管24与壳体20形成的内腔26流体连通,柔性管路16在手术过程的某些点与短管连接,一般在注射口18植入后。流体施加到内腔26或从内腔抽出是通过插入Huber针头经过皮肤进入到注射口18的硅隔膜28。虽然隔膜28用硅制造,注射口的接收针头的机构包括任何能够在用无心针(non-coringneedle)刺穿后自密封的结构。
虽然本文公开了注射口18的具体结构。但是存在着许多适合用于本发明的结构。
如图2和3所示,注射口18包括3个一体的沿周边间隔开的可转动的定位件/固定件30。各定位件可转动地支承于各自的销32。各个固定件30设置成可在各自径向平面上绕各自切向轴线转动。各个销32支承于各自的固定支撑件34,支撑件34支承于凸缘22。对于各个固定支撑件34,凸缘22的部分22a一般沿径向向外延伸,并带有2个间隔设置的位于槽36的两边附近的直立凸缘34a和34b,其间形成间隙,直立凸缘从凸缘部分22a的顶表面22b向上延伸。需要时,凹进部分36a在壳体20的侧面形成,以提供可转动的定位件30的转动空间。固定支撑件34可与凸缘22形成单体结构,或通过适当的方式固定其上。
各个凸缘34a和34b包括互相对准的孔,销32通过静配合压入孔中可将销固定到孔中。在图示的实施例中,肋部38a和38b在凸缘34a和34b的互相面对的内表面延伸,支撑固定件30使其不能自由转动,保持固定件30处于非展开状态直到进行植入。
凸缘22包括2个沿圆周间隔设置的凹进部分40(图2中只示出其中一个)。凸缘22包括位于凹进部分40之上的台阶/凸起部分22c。应当注意到凹进部分40可在凸缘22形成,但没有凸起部分22c。
本发明可通过任何适当的注射口结构来实现,比如设置小一些的凸缘或不连续的凸缘。3个固定件30可有效地防止注射口18在植入后翻动,比如由于患者的被动或感应动作造成的翻动。但是本发明并不限于使用3个定位件,可使用一个或更多个定位件。
参考图4,可转动的定位件30形成钩状,带有从基部30b延伸到圆弧部30c的臂部30a。圆弧部30c端接到尖端30d,尖端足够锋利可刺入组织。
图5和6显示了安装到施放器组件44的带有注射口18的注射口组件42。施放器组件44包括基体46和柱塞48。
参考图7、8和9,基体46包括把手部分50,其可具有任何适当的形状,和管状的壳体部分52。端部54包括凹进部分56,其尺寸和形状可容纳固定支撑件34和部分22a。各凹进部分包括槽56a,提供了可转动的定位件30的空间。端部54还包括凹进部分58,当注射口18安装到施放器组件44时,可提供短管24所需的空间。
基体46包括两个沿周边间隔设置的弹性的定位件60,分别由两个细长槽62a和62b形成。两个细长槽62a和62b沿圆周边间隔一定距离,使得定位件60成为悬臂弹性件,可向外移动而释放注射口18,如将在下面所作的介绍。在各个定位件60的纵向边上靠近端部60a的位置延伸出定位件促动件64a、64b。端部60a包括向内延伸的唇部60b。凹进部分40的弧宽、高度和深度与唇部60b的对应尺寸互补,可使唇部60b与凹进部分40接合,将注射口18固定到基体42的端部54。
如图6所示,柱塞48包括轴部分66和圆柱部分68,这两部分的形状和尺寸与基体46的对应部分互补,可轴向移动地容纳其中。圆柱部分68的端部70可与凸缘22互补接合,其包括与凸起部分22c对齐的轴向凹进部分72a和72b。端部70还可以是平的,如果受到凸缘22结构的限制。圆柱部分68形成有内腔74,其形状可容纳注射口18,不会干涉端部70和凸缘22之间形成希望的接合。
圆柱部分68包括两个间隔开的向外延伸的促动件76a和76b。促动件76a和76b显示出是斜面,具有倾斜的前沿面78a和78b以及后倾斜的后表面80a和80b。当柱塞48位于基体46中,各个促动件76a和76b位于槽62a和62b。如下面将介绍的,柱塞朝端部54压迫前端70时,促动件76a和76b分别接合弹性件促动件64a和64b,并向外推,使弹性件60向外移动,最终移动唇部60b离开各自的凹进部分22c,从施加器组件44释放出注射口18。
图10显示了施加器组件44的截面。基体46包括孔82,轴部分66可滑动地设置在孔中。通过将销84安装到基体46并延伸到轴部分66的纵向槽86,柱塞48固定到基体46。
参考图5和11,注射口组件42显示出具有安装到施加器组件44的注射口18。固定件30处于未展开状态的收缩位置。轴66的端部66a如图所示延伸超过把手部分50。为将注射口18安装到施加器组件44,固定支撑件34与开口56对准,卡到适当位置,使唇部60b与凹进部分22c接合。为保持柱塞48于适当位置,定位夹88与轴部分66上的环形槽90接合。进行植入注射口18,先取下定位夹88,轴部分66前进穿过孔82,接触固定件30,使其转动到展开状态,位于刺入和与筋膜层92接合的位置,如图12所示。轴部分66的进一步前进将使注射口18脱离施加器组件44,如下面所作介绍。
图13是注射口连接组件沿图12的剖面13-13的剖视图。在这个位置,通过初步接触位于收缩位置最上点的固定件30,端部70已经使可转动的定位件/固定件30从未展开状态的收缩位置转动大约90°。形成了绕销32的力矩,使固定件30转动,并传递足够的力刺入筋膜层。图13显示了固定件30完全转动到展开状态。虽然在这个位置端部70尚未触底碰到凸缘22的上表面。
参考图14,图14是图13一部分的放大图,显示了弹性定位件60仍使得唇部60b位于凹进部分40中。参考图15,在图13所显示的位置,斜面促动件76a和76b与定位件促动件62a和62b接触(图15中未显示62b和76b)。柱塞66沿纵向前进使定位件促动件62a和62b越过斜面78a和78b,推动弹性定位件60向外移动。当柱塞66前进,使端部70的许多部分接合凸缘22,开始推动注射口18轴向离开。当斜面78a和78b已经使定位件60向外移动足够多时,唇部60b离开凹进部分40,释放注射口18。柱塞66的进一步移动推动凸缘22通过壳体52的端部54。槽86底部接触销84,阻止柱塞66的进一步移动。
图16是根据本发明的注射口连接组件的可选择实施例的侧视图。注射口连接组件94包括把手部分96,可相对圆柱部分98转动。把手部分96包括连接到轴102的手柄100。除了把手部分的结构,注射口连接组件94与注射口连接组件42不同的地方在于有4个沿周边相等间隔的可转动的定位件104(见图18),以及定位件促动件和促动斜面的结构。
参考图17,柱塞106包括两个沿径向相对的弹性定位件促动件108。弹性定位件110分别设置在径向相对的位置,因为有4个可转动的定位件104。如果只有3个定位件,弹性定位件将如上面所示进行设置。参考图20,弹性定位件110包括斜面促动件112。当柱塞106前进时,促动件108与斜面112接合,推动弹性定位件110向外移动,与注射口脱离接触。
应当注意到,在图16到20的实施例中,在与弹性定位件脱离后柱塞106降至最低点,不将注射口推出。到目前为止所介绍的各实施例设置成在柱塞行程结束时推动或不推动注射口离开。
参考图21,其显示了根据本发明的另一注射口的实施例。在这个实施例中,注射口114包括多个可转动的定位件/固定件116,分别设置成沿切向平面转动。可转动的固定件116可转动地支承于各自的销118,销沿径向压入凸缘120。
参考图22,显示了可转动的定位件/固定件116a的另外结构。固定件116a具有一般为圆形的截面,并包括圆弧部分122,其延伸高过臂124的端部124a。固定件116和116a的操作是相同的。
如图21和22所示,施加器126包括轴128和圆柱端部130。空腔132在圆柱端部130的中心形成,提供了注射口114的空间。圆柱端部130包括沿圆周边间隔设置的开口132,其尺寸和间距与可转动的定位件116对应。
参考图24、25和26,注射口114通过将其放到筋膜层134进行植入,固定件116处于未展开状态的收缩位置。施加器126的端部130a与凸缘120接触,开口132与固定件116对齐。轴128转动,在足够轴向力的作用下,推动边132a靠到固定件116,使固定件转动和刺入筋膜层134。边132a包括过渡到端部130a的圆整部分,以便平滑地与固定件116接合。如图26所示,当施加器126的凹进部分132转动到展开状态的图示位置,注射口114植入。
参考图27,其显示了带有一体的可移动固定件的注射口的另一实施例。注射口136包括8个沿圆周边间隔设置的固定件138(在图27中显示了4个),其可径向向外延伸。本发明的实施例并不限于使用8个固定件,可使用一个或多个固定件。固定件138以任何适当方式从注射口136的远端的底表面136a开始延伸并固定到底表面,比如其一端138a可通过压入、焊接、环氧树脂粘结或其他方式固定到底表面136a上的盲孔。远端138b锋利可刺入组织。
如图所示,固定件138在未变形的展开状态是单个圈,具有钩状,其远端138b接触或靠到注射口136的壳体140的侧面。应当注意到,壳体140的侧面和远端138b的相对位置使得固定件138处于一定的变形状态,带有应力和应变。固定件138,也可称作径向件,是柔性的,可用任何适当的材料制成。材料要求有很高的弹性,如镍钛合金的镍钛诺丝。
固定件138可具有任何适当的尺寸。在一个示例中,镍钛诺丝的直径范围在0.020到0.080毫米之间,形成直径为大约4到8毫米的圈。
参考图28到31,植入注射口136可通过使用施加器142来实现。施加器142包括可在管146内轴向往复运动的柱塞144。端部144a的形状与柱塞144的壳体140互补。管146的端部146a包括多个沿圆周边间隔设置的槽148,所在位置与固定件138的间隔互补。管146可包括槽,以容纳从注射口136延伸的短管。
如图28所示,注射口44初始设置在管146的内部,与端部146a间隔的距离足以使固定件138处于未展开状态的位置,使尖端138b分别置于槽148中,未延伸到管146直径的外面。管146在端部146a的壁厚要能提供适当的长度,使尖端138b保持设置其中,不会延伸超过管146的外径。管146的厚度沿其整个长度可以是均匀的,或沿其长度是薄壁但在端部146a具有较厚的壁部分,如围绕端部146a设置的环形件(未显示)造成的后壁部分,以便为槽148提供希望的径向厚度。
虽然图28显示出柔性固定件138在槽148和底表面136a之间直线延伸,固定件138可形成圆弧形状,圆弧的形状由特定的物理性质及槽148和底表面136a之间距离来确定。槽148设置成可保持固定件138处于适当的方位和结构,以通过槽148输送,如下面所介绍的。管146可用任何适当的材料制造,比如不锈钢或塑料。
注射口136可通过任何适当的方式可释放地保持在管146内的适当位置。例如,可使销延伸通过管146的孔以限制注射口136越过底面136a,直到进行植入。注射口136和管146内侧之间要有足够的摩擦配合,最紧的配合位于管146内的注射口136的最高位置处。端部144a可释放地接合注射口136,柱塞144保留在管146内。
可以想到,但不一定要求,施加器142可预先将注射口136安装到管144内作为已灭菌的组件提供给手术医生。自连接注射口136实现植入是通过使端部146a压到筋膜层150上并轻微地压迫组织表面使组织突起,使固定件138可刺入组织。手术医生然后推动凸缘144使固定件138展开,收回管146。锋利的尖端138a刺入并从筋膜层150旋转回来,靠到壳体140的侧面以保护尖端138b。在展开状态下,固定件138处于“松弛”结构,具有很少的变形,因此与预连接的变形状态相比应力应变很小。
可变形固定件138的尺寸要能提供类似于缝合的保持强度,固定件138的柔性允许取出注射口且不会使组织撕裂。例如,连接后,注射口可通过握牢注射口136并向上拉,在这个过程中不必转动固定件138,以重新进行定位。然后可以重新插入施加器142和重新进行植入。施加器142还可用于取出注射口136,如通过向组织推动管146,使端部150a与要拉出的注射口136接合。在这种情况下,最好提供可指示柱塞144相对注射口136和槽148位置的结构。
虽然柔性固定件138显示出从底表面136a延伸,本发明的这方面可通过固定件14从注射口136沿另外的方向延伸,如从侧面延伸,来实现。应当了解,可以对施加器142进行改进,比如设置较大的直径来配合与植入的注射口136的圆周连接。应注意到,当柔性连接件138从底面136a延伸,尖端138a位于未展开状态的朝下位置,准备从上到下刺入组织,这样与固定件从侧面向外延伸相比,需要的直径较小。较小直径的施加器可减小切口的尺寸和较小的切开。
参考图32,所显示的注射口的另一实施例具有一体的可移动的定位件。注射口152包括壳体154,其带有从壳体154的下远端向外延伸的环形凸缘156。环形凸缘156包括上表面156a和下表面156b。
铰链158支承于环形凸缘156,可移动地连接定位件/固定件160到凸缘156。铰链158可具有任何形状的结构,可允许保持件/固定件160和凸缘156之间必要的相对移动。
参考图33,保持件160包括上表面160a和下表面160b。锁定件162从上表面160a向上延伸,其包括远端162a,其形状可刺入组织。锁定件162还包括锁定结构162b,其形状可与环形凸缘156接合,将定位件160锁定到展开位置,如下面将介绍的。如图所示,锁定结构162b包括台阶162c和斜坡/斜面162d。
在图示的实施例中,凸缘156包括开口164,其形状与锁定件162互补,可容纳锁定件162和接合台阶162c以保持锁定件162和定位件/固定件160处于未展开状态。锁定件162具有足够的柔性,当斜面162d沿开口164的对应边164a接合和前进时,允许锁定件162向外运动。一旦锁定件162已经插入开口164足够远使斜面162d脱离对应的边164a时,台阶162c离开上表面156a,锁定件162向内移动,台阶162c与上表面156c接合抵抗锁定件162从开口164抽出。
或者,开口164可开在凸缘156的外边156c,甚至可以取消,而锁定件162设置成可使斜面162d与外边156c接合和沿其前进。
锁定件162可用任何适当的可提供必要柔性的材料制成,包括塑料。锁定件162不限于所示的形状,可以是任何具有保留定位件162于所示展开状态位置功能的形状。锁定件162和凸缘156设置成可使远端162a不能延伸超过上表面154a或超过许多。例如,锁定件162可包括止动表面,其可与环形凸缘156接合以限制远端162a相对上表面156a的位置。
定位件160可以用任何适当的材料包括塑料来制造。
图32显示了处于未展开状态的定位件160。铰链158可包括制动件以保持定位件160处于相对壳体154的特定的未展开状态位置。为植入注射口152,定位件160插入筋膜组织下,注射口152位于上方。如果必要,在组织上开口使其足以插入定位件160。定位件160可相对壳体154和凸缘156移动进入展开状态,远端162a刺入组织并与开口164接合,如图34所示。
图34显示了固定到位的注射口152,组织166位于凸缘156和定位件/固定件160之间。从图34可看出,铰链158可保持凸缘156和定位件160处于间隔开的关系,形成组织166可夹在其中的间隙。或者,如果凸缘156或定位件160具有足够的柔性可不损害地夹住组织166,间隙也可省略。
虽然定位件/固定件160显示出形状与凸缘156互补,定位件/固定件160不必与凸缘156有相同的形状。例如,定位件/固定件160可以是条带。此外,壳体154不必包括凸缘156。凸缘156可省略,铰链158直接连接到壳体154远端的边。定位件160的旋转轴线可设置成相对壳体154和壳体154的底表面156b是垂直的。
总之,已经介绍了本发明概念所具有的众多优点。介绍前面的本发明的一个或多个实施例的目的是进行说明和介绍。而不是用于排除其他可能或限制本发明于所介绍的具体形式。在了解上述内容后可进行明显的改进或变化。所选择和介绍的一个或多个实施例是为了更好地说明本发明的原理和其实际应用,使得所属领域的技术人员更好地利用本发明的各种实施例和各种改进,以便使其适合于所考虑的具体应用。本发明的范围由所附权利要求限定。

Claims (10)

1.一种注射流体到体内的注射口,所述注射口包括:
a.壳体,可置于身体皮肤之下,所述壳体包括接受针头的机构;
b.至少一个定位件,可一体地连接到所述壳体,所述至少一个定位件当位于相对所述壳体的第一位置时处于未展开状态,位于相对所述壳体的第二位置时处于与所述壳体附近的组织结合的展开状态。
2.根据权利要求1所述的注射口,其特征在于,所述至少一个定位件设置成可从所述第一位置无变形地移动到所述第二位置。
3.根据权利要求2所述的注射口,其特征在于,当所述定位件从所述第一位置移动到所述第二位置时,所述至少一个定位件可绕各自轴线转动。
4.根据权利要求3所述的注射口,其特征在于,所述轴线沿径向延伸。
5.根据权利要求3所述的注射口,其特征在于,所述轴线沿切线方向延伸。
6.根据权利要求5所述的注射口,其特征在于,所述定位件包括远距所述轴线的锁定件,所述锁定件可与所述壳体接合以保持所述定位件处于所述展开状态。
7.根据权利要求3所述的注射口,其特征在于,所述至少一个定位件包括圆弧部分。
8.根据权利要求7所述的注射口,其特征在于,所述圆弧部分端接可刺入组织的尖部。
9.根据权利要求1所述的注射口,其特征在于,所述至少一个定位件当处于所述第一位置时可弹性变形,当从所述第一位置移动到所述第二位置时,恢复到其自然的无变形状态。
10.根据权利要求9所述的注射口,其特征在于,所述至少一个定位件当位于所述第二位置时处于自然的无变形状态。
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US20040254537A1 (en) 2004-12-16
MXPA04005756A (es) 2005-07-05
EP1488824B1 (en) 2018-07-25
US20110082426A1 (en) 2011-04-07
AU2011200887B2 (en) 2012-02-23
CA2471185C (en) 2012-11-06
US7862546B2 (en) 2011-01-04
AU2004202549A1 (en) 2005-01-06
CN100418495C (zh) 2008-09-17
JP2005007171A (ja) 2005-01-13
US8864717B2 (en) 2014-10-21
EP1488824A1 (en) 2004-12-22
JP4884659B2 (ja) 2012-02-29
EP2332609B1 (en) 2019-01-02

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