Prestressed column
    3.
    发明授权
    Prestressed column 失效
    预应力柱

    公开(公告)号:US5195991A

    公开(公告)日:1993-03-23

    申请号:US871841

    申请日:1992-04-20

    申请人: Kelly A. Pike

    发明人: Kelly A. Pike

    IPC分类号: A61M25/00 B29C63/18

    摘要: A catheter includes a spring having a plurality of convolutions disposed along a longitudinal axis, and a first modulus. A sheath overlying the spring engages the convolutions of the spring and imparts to the spring axial compressive stresses which increase the modulus of the spring. The catheter can be manufactured by inserting the spring into a tube of Hytrel.RTM. material, stretching the tube at a transition region which advances along the tube causing the tube to neck down onto the spring. The stretching develops internal stresses which are ultimately imparted to the spring thereby increasing the modulus of the catheter.

    摘要翻译: 导管包括具有沿着纵向轴线设置的多个卷积的弹簧和第一模量。 覆盖弹簧的护套与弹簧的螺旋接合,并赋予弹簧轴向压应力,从而增加弹簧的弹性模量。 可以通过将弹簧插入Hytrel TM材料管中来制造导管,该管在沿着管前进的过渡区域处拉伸以使管颈向下伸到弹簧上。 拉伸产生最终赋予弹簧的内应力,从而增加导管的模量。

    Fluid flow control
    4.
    发明授权
    Fluid flow control 失效
    流体流量控制

    公开(公告)号:US5009251A

    公开(公告)日:1991-04-23

    申请号:US271730

    申请日:1988-11-15

    IPC分类号: A61M5/14 A61M5/168

    摘要: Disclosed is a variable fluid flow controller for regulating the rate of flow from a source of fluid under pressure, comprising a plurality of unique flow restriction passagways, a valve associated with each passageway, and a rotatable cam for selectively opening any one of the valves while maintaining the remaining valves closed. The flow restriction passageway preferably comprises a channel etched on the surface of a first silicon wafer and enclosed by a second wafer to form a fluid flow passageway, one of the first or second wafers having a plurality of apertures therethrough for intersecting the passageway at various distances along its length.

    METHODS FOR MANUFACTURING AN ENDOPROSTHESIS
    6.
    发明申请
    METHODS FOR MANUFACTURING AN ENDOPROSTHESIS 审中-公开
    制造内毒素的方法

    公开(公告)号:US20100299911A1

    公开(公告)日:2010-12-02

    申请号:US12778589

    申请日:2010-05-12

    IPC分类号: B23P17/04

    摘要: Method for manufacturing an endoprosthesis are described. The method may include selecting an indication range based on a range of inner diameters of a body lumen. A nominal diameter of the endoprosthesis may be selected. A range of chronic outward force, a range of radial force, a range of safety factors, or combinations thereof may be selected. A design characteristic may be determined based on the indication range, the nominal diameter, and at least one of the range of chronic outward force, the range of radial force, and the range of safety factors. The endoprosthesis may be manufactured based on the determined design characteristic.

    摘要翻译: 描述制造内置假体的方法。 该方法可以包括基于体腔内径的范围来选择指示范围。 可以选择内置假体的公称直径。 可以选择一系列慢性向外力,一定范围的径向力,一系列安全系数或其组合。 可以基于指示范围,公称直径以及慢性向外力的范围,径向力范围和安全系数范围中的至少一个来确定设计特征。 内置假体可以基于所确定的设计特征来制造。

    Method for making prestressed column
    7.
    发明授权
    Method for making prestressed column 失效
    制备预应力柱的方法

    公开(公告)号:US5121536A

    公开(公告)日:1992-06-16

    申请号:US643525

    申请日:1991-01-18

    申请人: Kelly A. Pike

    发明人: Kelly A. Pike

    IPC分类号: A61M25/00 B29C63/18

    摘要: A catheter includes a spring having a plurality of convolutions disposed along a longitudinal axis, and a first modulus. A sheath overlying the spring engages the convolutions of the spring and imparts to the spring axial compressive stresses which increase the modulus of the spring. The catheter can be manufactured by inserting the spring into a tube of Hytrel.RTM. material, stretching the tube at a transition region which advances along thhe tube causing the tube to neck down onto the spring. The stretching develops internal stresses which are utimately imparted to the spring thereby increasing the modulus of the catheter.

    摘要翻译: 导管包括具有沿着纵向轴线设置的多个卷积的弹簧和第一模量。 覆盖弹簧的护套与弹簧的螺旋接合,并赋予弹簧轴向压应力,从而增加弹簧的弹性模量。 可以通过将弹簧插入Hytrel TM材料管中来制造导管,该管在沿着管道前进的过渡区域处拉伸以使管子颈缩到弹簧上。 拉伸产生内应力,这些内应力通常被赋予弹簧,从而增加导管的模量。

    Apparatus for controlling flow and pressure measurement
    8.
    发明授权
    Apparatus for controlling flow and pressure measurement 失效
    用于控制流量和压力测量的装置

    公开(公告)号:US4648868A

    公开(公告)日:1987-03-10

    申请号:US782032

    申请日:1985-09-30

    IPC分类号: A61B5/0215 A61B5/02 F16K21/00

    CPC分类号: A61B5/0215 Y10T137/86549

    摘要: An apparatus comprising a valve body having first, second and vent ports and a generally tubular valve element having a peripheral wall with first, second and vent openings in the peripheral wall leading to the interior of the tubular valve element. The valve element is mounted in the valve body for rotational movement between first and second rotational positions and for axial movement between first and second axial positions. A pressure sensor is exposed to the fluid pressure within the valve body. In the first rotational position of the valve element, drip flow is provided between the first and second ports, and in the second rotational position, the vent port is open to provide communication between the pressure sensor and the atmosphere. To provide flush flow between the first and second ports, the valve element is moved to the second axial position.

    摘要翻译: 一种装置,包括具有第一,第二和排气口的阀体以及具有周壁的大体上管状的阀元件,所述外围壁在周壁上具有通向管状阀元件内部的第一,第二和排气开口。 阀元件安装在阀体中用于在第一和第二旋转位置之间旋转运动并且用于在第一和第二轴向位置之间的轴向运动。 压力传感器暴露于阀体内的流体压力。 在阀元件的第一旋转位置,在第一和第二端口之间设置滴流,并且在第二旋转位置,排气口打开以在压力传感器和大气之间提供连通。 为了在第一和第二端口之间提供冲洗流动,阀元件移动到第二轴向位置。