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    Tube occluder and method for occluding collapsible tubes
    4.
    发明授权
    Tube occluder and method for occluding collapsible tubes 有权
    管闭塞器和封闭可收缩管的方法

    公开(公告)号：US06877713B1

    公开(公告)日：2005-04-12

    申请号：US09357645

    申请日：1999-07-20

    申请人： Lawrence B. Gray ,  Richard J. Lanigan

    发明人： Lawrence B. Gray ,  Richard J. Lanigan

    IPC分类号： A61M5/142 ,  A61M5/145 ,  A61M39/22 ,  F04B43/067 ,  F04B49/06 ,  F16K7/04

    CPC分类号： F04B45/06 ,  A61M1/1649 ,  A61M1/267 ,  A61M1/367 ,  A61M5/14 ,  A61M5/14224 ,  A61M5/14593 ,  A61M5/172 ,  A61M39/228 ,  A61M2205/12 ,  A61M2209/02 ,  F04B43/02 ,  F04B43/067 ,  F04B45/00 ,  F04B45/02 ,  F04B49/065 ,  F04B49/12 ,  F04B53/10 ,  F04B53/16 ,  G01M3/26 ,  G01M3/32 ,  G05D16/20

    摘要： The present invention involves, in some embodiments, mechanisms and methods of occluding collapsible tubing with an occluder to prevent fluid flow therethrough. In some embodiments, a tube occluding mechanism is disclosed that includes a bendable occluding member for creating a force that can be applied to a collapsible tube to occlude the tube. In some embodiments, the collapsible tube can be an inlet/outlet tube on a removable pumping cartridge that is coupled to a reusable pump drive component when the system is in operation. In such embodiments, the occluding mechanism can be attached to the reusable component and can be used to block fluid flow to and from the pumping cartridge. In some embodiments, the occluding member can comprises a spring plate which can create a force to occlude tubing when in a relaxed, unbent configuration, and which can be bent to unocclude the tubing. In some preferred embodiments, in a default configuration of the tube occluder mechanism (when no external force is applied to the occluding member) the tubes are occluded, so that the tube occluder mechanism provides a fail-safe configuration preventing fluid flow to and from a pumping cartridge to which the tubes can be connected.

    摘要翻译： 在一些实施例中，本发明涉及用闭塞器封闭可收缩管道以防止流体流过其中的机构和方法。 在一些实施例中，公开了一种管闭塞机构，其包括用于产生能够施加到可收缩管以封闭管的力的可弯曲闭塞构件。 在一些实施例中，可折叠管可以是可拆卸泵筒上的入口/出口管，其在系统运行时与可重复使用的泵驱动部件联接。 在这样的实施例中，闭塞机构可以附接到可重复使用的部件，并且可以用于阻止流入和流出泵送的流体。 在一些实施例中，闭塞构件可以包括弹簧板，弹簧板可以在处于松弛的，未弯曲的构造中时产生阻塞管道的力，并且可以弯曲以排除管道。 在一些优选实施例中，在管堵塞机构的默认配置（当外力不对阻塞构件施加时）管被封闭，使得管封堵器机构提供故障安全配置，防止流体流入和流出 泵可以连接到管道上。

    Methods and systems for detecting the presence of a gas in a pump and preventing a gas from being pumped from a pump
    5.
    发明授权
    Methods and systems for detecting the presence of a gas in a pump and preventing a gas from being pumped from a pump 有权
    用于检测泵中气体的存在并防止气体从泵泵送的方法和系统

    公开(公告)号：US06302653B1

    公开(公告)日：2001-10-16

    申请号：US09357615

    申请日：1999-07-20

    申请人： Robert J. Bryant ,  Lawrence B. Gray ,  Geoff P. Spencer

    发明人： Robert J. Bryant ,  Lawrence B. Gray ,  Geoff P. Spencer

    IPC分类号： F04B908

    CPC分类号： F04B51/00 ,  F04B2205/503

    摘要： A method and system are disclosed for detecting the presence of a gas in a pump chamber of a pumping system. The methods, and systems employing the methods, involve isolating a pump chamber from its surroundings, for example by closing an inlet and outlet valve on lines to and from the chamber, and determining the volume of the pump chamber with a force applied to a moveable or flexible surface of the pump chamber. The volume of the pump chamber is then redetermined in a similar fashion but with a second, different level of force applied to the surface of the pump chamber. The volumes thus determined can then be compared to detect the presence of a gas in the pump chamber.

    摘要翻译： 公开了一种用于检测在泵送系统的泵室中存在气体的方法和系统。 采用这些方法的方法和系统涉及将泵室与其周围隔离，例如通过在通向和离开室的管线上关闭入口和出口阀，并且以施加到可移动的方式确定泵室的体积 或泵室的柔性表面。 然后以类似的方式重新确定泵室的体积，但是具有施加到泵室表面的第二不同水平的力。 然后可以比较如此确定的容积以检测泵室中的气体的存在。

    Pump chamber having at least one spacer for inhibiting the pumping of a gas
    7.
    发明授权
    Pump chamber having at least one spacer for inhibiting the pumping of a gas 有权

    公开(公告)号：US06663359B2

    公开(公告)日：2003-12-16

    申请号：US10141529

    申请日：2002-05-07

    申请人： Lawrence B. Gray

    发明人： Lawrence B. Gray

    IPC分类号： F04B3502

    CPC分类号： F04B49/065 ,  F04B43/0081 ,  F04B2205/503

    摘要： Pump chambers are disclosed that include at least one spacer element therein to prevent any gas in the pump chamber from being pumped from the pump chamber during pumping. In some embodiments, the pump chambers are included in removable pumping cartridges that are constructed and configured for coupling with reusable pump drives. Some embodiments of pump chambers including spacer elements therein comprise a substantially rigid component forming a wall of the pump chamber with a flexible or movable membrane disposed on the wall to form the chamber. Spacer elements in such pump chambers are, in some embodiments, attached to a wall of the substantially rigid component so as to prevent the movable/flexible membrane from contacting the wall during pumping.

    Pump chamber having at least one spacer for inhibiting the pumping of a gas
    8.
    发明授权
    Pump chamber having at least one spacer for inhibiting the pumping of a gas 有权

    公开(公告)号：US06382923B1

    公开(公告)日：2002-05-07

    申请号：US09357644

    申请日：1999-07-20

    申请人： Lawrence B. Gray

    发明人： Lawrence B. Gray

    IPC分类号： F04B1924

    CPC分类号： F04B49/065 ,  F04B43/0081 ,  F04B2205/503

    摘要： Pump chambers are disclosed that include at least one spacer element therein to prevent any gas in the pump chamber from being pumped from the pump chamber during pumping. In some embodiments, the pump chambers are included in removable pumping cartridges that are constructed and configured for coupling with reusable pump drives. Some embodiments of pump chambers including spacer elements therein comprise a substantially rigid component forming a wall of the pump chamber with a flexible or movable membrane disposed on the wall to form the chamber. Spacer elements in such pump chambers are, in some embodiments, attached to a wall of the substantially rigid component so as to prevent the movable/flexible membrane from contacting the wall during pumping.