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    • 1. 发明授权
    • Devices and methods for dynamic boring procedure reconfiguration
    • 动态钻孔程序重构的装置和方法
    • US08220564B2
    • 2012-07-17
    • US12229904
    • 2008-08-27
    • Randy Ray RunquistHans Kelpe
    • Randy Ray RunquistHans Kelpe
    • E21B7/10
    • E21B7/046E21B44/02
    • Various embodiments are directed to a method of switching horizontal directional drilling procedures during bore path turning. Such methods can include identifying a hierarchal arrangement of a plurality of different boring procedures utilizing different boring techniques, the hierarchy arrangement representing boring procedures of increasing ability to bore through harder soil while changing a trajectory of a boring tool. Such methods can further include boring a first leg of a curved bore path using a boring tool connected to a drill rig by a drill string, the first leg being bored using a first boring procedure of the plurality of different boring procedures. Such methods can further include monitoring a plurality of boring parameters during boring of the first leg, the plurality of boring parameters comprising: torsional pressure of the drill string, rotational travel of the drill string, hydraulic pressure, and axial displacement. Such methods can further include switching from boring the first leg of the curved bore path using the first boring procedure to boring a second leg using a second boring procedure of the plurality of boring procedures, the switch based on one or more of the boring parameters deviating past a threshold.
    • 各种实施例涉及在钻孔路径转动期间切换水平定向钻孔过程的方法。 这种方法可以包括使用不同的钻孔技术来识别多个不同钻孔程序的分层布置,层次结构表示在改变钻孔工具的轨迹的同时增加穿过较硬土壤的能力的钻孔程序。 这样的方法还可以包括使用钻孔工具连接到钻机的钻孔工具来钻出弯曲孔径的第一腿部,使用多个不同钻孔过程的第一钻孔过程来钻出第一腿部。 这种方法还可以包括在第一支腿钻孔期间监测多个钻孔参数,该多个钻孔参数包括:钻柱的扭转扭矩,钻柱的旋转行程,液压和轴向位移。 这样的方法还可以包括使用第一钻孔过程从弯曲孔道的第一腿钻孔,使用多个钻孔过程中的第二钻孔过程来钻孔第二腿,所述开关基于一个或多个钻孔参数偏离 超过一个门槛。
    • 5. 发明授权
    • Capture detection for multi-chamber pacing
    • 捕获检测多腔起搏
    • US08116870B2
    • 2012-02-14
    • US12214852
    • 2008-06-23
    • Yanting DongScott A. MeyerKevin John Stahlsberg
    • Yanting DongScott A. MeyerKevin John Stahlsberg
    • A61N1/368
    • A61N1/3712A61N1/3684
    • Multi-chamber pacing may result in capture of one chamber, capture of multiple chambers, fusion, or non-capture. Approaches for detecting various capture conditions during multi-chamber pacing are described. Pacing pulses are delivered to left and right heart chambers during a cardiac cycle. A cardiac electrogram signal is sensed following the delivery of the pacing pulses. Left chamber capture only, right chamber capture only, and bi-chamber capture may be distinguished based on characteristics of the cardiac electrogram signal. Multi-chamber capture detection may be implemented using detection windows having dimensions of time and amplitude. The detection windows are associated with expected features, such as expected signal peaks, under a particular capture condition. The cardiac electrogram signal features are compared to detection windows to determine the capture condition.
    • 多腔起搏可能导致一个腔室的捕获,多个腔室的捕获,融合或非捕获。 描述了在多室起搏期间检测各种捕获条件的方法。 在心动周期期间,起搏脉冲被传送到左心室和右心室。 在起搏脉冲输送之后感测心电图信号。 仅左室捕获,右室捕获,双室捕获可以基于心电图信号的特征来区分。 可以使用具有时间和幅度尺寸的检测窗来实现多室捕获检测。 检测窗口与特定捕获条件下的预期特征(例如期望的信号峰值)相关联。 将心电图信号特征与检测窗口进行比较以确定捕获条件。