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    • 37. 发明申请
    • System for the controlled delivery of stents and grafts
    • 用于支架和移植物受控输送的系统
    • US20060253184A1
    • 2006-11-09
    • US11121386
    • 2005-05-04
    • Kurt Amplatz
    • Kurt Amplatz
    • A61F2/06
    • A61F2/95
    • The present invention provides a delivery mechanism for percutaneously routing a stent or graft through the vascular system and procedures for addressing an aneurysm or an otherwise damaged vessel. The delivery system includes an outer tubular guide catheter 20, an inner tubular delivery (pusher) catheter 14 coaxially disposed and slidable relative to the outer guide catheter and an elongated flexible wire or cable 26 that is coaxially insertable through the lumen of the inner tubular catheter and that has a frusto-conical bead affixed at the distal end thereof which is sized to at least partially fit within the lumen of the inner pusher catheter when a proximally directed tension force is applied between the elongated flexible wire or cable 26 with respect to the pusher catheter 14. By inserting a compressed coil spring between a proximal end portion of the pusher catheter 14 and the proximal end portion of the cable 26, the requisite clamping force is maintained to secure the stent or graft to the distal end of the pusher catheter until the compression spring force is removed. With the stent or graft clamped to the distal end of the inner pusher catheter, it can be drawn within the lumen of the outer guide catheter for delivery therewith to the target site.
    • 本发明提供一种用于经皮穿透支架或移植物穿过血管系统的递送机制以及用于解决动脉瘤或另外受损的血管的程序。 输送系统包括外部管状引导导管20,相对于外部引导导管同轴地设置和滑动的内部管状输送(推动器)导管14和可同轴插入穿过内部管状导管的内腔的细长柔性线或电缆26 并且其具有固定在其远端处的截头圆锥形珠,其尺寸设计成至少部分地配合在内部推动器导管的内腔内时,当在细长柔性线或电缆26之间相对于 推动导管14.通过在推动器导管14的近端部分和电缆26的近端部分之间插入压缩的螺旋弹簧,维持必要的夹持力以将支架或移植物固定到推动导管的远端 直到压缩弹簧力被去除。 当将支架或移植物夹持到内部推动器导管的远端时,其可以在外导向导管的内腔中被拉伸以便与其一起输送到目标部位。
    • 39. 发明授权
    • Sizing catheter for measuring cardiovascular structures
    • 用于测量心血管结构的尺寸导管
    • US06210338B1
    • 2001-04-03
    • US09450240
    • 1999-11-29
    • Michael AfremovKurt Amplatz
    • Michael AfremovKurt Amplatz
    • A61B502
    • A61B5/1076A61M25/10
    • A sizing catheter and method of measuring a preselected internal opening within a patient to provide a rapid and precise determination of first and second stretched diameters of the preselected internal opening. The sizing catheter includes a dilation balloon constructed of a thin expandable plastic, which is inflatable and is utilized to determine a size of the preselected opening. The dilation balloon is inflated to an inflation threshold wherein the dilation balloon deforms about the preselected opening and the size of the dilation balloon adjacent the preselected opening approximates the first stretched diameter of the preselected opening. The sizing catheter and method may be utilized to determine an appropriate sized device to be positioned within the preselected opening.
    • 尺寸导管和测量患者内的预选内部开口的方法,以快速和精确地确定预先选择的内部开口的第一和第二拉伸直径。 定径导管包括由薄的可膨胀塑料构成的扩张气囊,其是可充气的并且用于确定预选开口的尺寸。 膨胀气囊膨胀至充气阈值,其中扩张气囊围绕预选开口变形,并且与预选开口相邻的扩张球囊的尺寸近似于预选开口的第一拉伸直径。 定径导管和方法可以用于确定要放置在预选开口内的合适尺寸的装置。
    • 40. 发明授权
    • Medical introducer and valve assembly
    • 医疗导引器和阀组件
    • US5098393A
    • 1992-03-24
    • US200662
    • 1988-05-31
    • Kurt AmplatzFrank Kotula
    • Kurt AmplatzFrank Kotula
    • A61M25/06A61M39/06
    • A61M25/0606A61M39/0606A61M2025/0687A61M2039/062A61M2039/0633A61M2039/0686
    • A medical catheter introducer and hemostasis valve assembly consists of a sheath having an elongated tube defining a conduit, a housing disposed at the proximal end of the sheath and further defining a conduit and an orifice, and a flexible elongated dilator sized for insertion through the hub and sheath conduit. The dilator has a tapered distal tip end and defines an axial conduit and an annular ridge having distally- and proximally-directed inclined surfaces. The sheath, when assembled with the dilator, has its distal end immediately adjacent the proximally-directed inclined surface of the ridge. A hemostasis valve for sealing the conduit is disposed in alignment with the conduit, and defines an aperture for passage of dilator and ridge therethrough in sealing engagement, into the conduit, and seals when the dilator is removed. The valve has a housing defining an orifice of a first diameter, and a valve element of a second diameter, greater than the first diameter. The valve is disposed within the orifice and is subject to externally-applied, radially directed forces that cause the valve to assume a dome-shape formation, with a convex surface disposed against the pressure of fluids within the body. As the introducer assembly is introduced into a body over a guidewire extending via a puncture opening into a vessel, the dilator and sheath flex to follow the guidewire, and the tapered end of the dilator and the distally-directed inclined surface of the ridge act to dilate the flesh about the opening to facilitate passage of the sheath. The introducer and valve may be used alone, or respectively with valves or introducers of other design. A base for attachment of the introducer to the patient is also described.
    • 医疗导管导引器和止血阀组件包括具有限定导管的细长管的护套,设置在护套的近端处并进一步限定导管和孔的壳体,以及尺寸适于插入穿过毂的柔性细长扩张器 和鞘导管。 扩张器具有锥形的远端尖端并且限定轴向导管和具有远侧和近侧定向的倾斜表面的环形脊。 当与扩张器组装时,护套的远端紧邻脊的向近侧倾斜的表面。 用于密封导管的止血阀设置成与管道对准,并且在密封接合时限定了用于使膨胀器和脊通过的孔,用于密封接合,并且当扩张器被移除时密封。 阀具有限定第一直径的孔的壳体和大于第一直径的第二直径的阀元件。 阀设置在孔内并且受到外部施加的径向力的作用,使得阀呈现穹顶形状,其中凸表面抵抗体内流体的压力设置。 当导引器组件被引入到穿过穿刺孔延伸到血管中的导丝上的主体中时,扩张器和皮肤弯曲以跟随导丝,并且扩张器的锥形端和脊的远侧倾斜的表面作用到 扩大围绕开口的肉体,以方便鞘的通过。 导引器和阀可以单独使用,也可以分别用于其他设计的阀门或导引器。 还描述了用于将导引器附接到患者的基部。