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    • 4. 发明申请
    • System and method for determining optimal atrioventricular delay based on intrinsic conduction delays
    • 基于内在传导延迟确定最佳房室延迟的系统和方法
    • US20060047319A1
    • 2006-03-02
    • US10928586
    • 2004-08-27
    • Ken BruhnsXiaoyi MinPaul LevineEuljoon Park
    • Ken BruhnsXiaoyi MinPaul LevineEuljoon Park
    • A61N1/362
    • A61N1/3627A61N1/3682
    • Techniques are provided for estimating optimal atrioventricular delay values for use in pacing the ventricles. Both the intrinsic inter-atrial conduction delay and the intrinsic atrioventricular conduction delay are determined for the patient and then the preferred atrioventricular pacing delay is derived therefrom. By taking into account intrinsic inter-atrial delay along with intrinsic atrioventricular delay, it is believed that a more reliable estimate of the true optimal atrioventricular delay values for the patient can be achieved than with techniques that only take into account intrinsic atrioventricular delay values. In one example, the technique uses intracardiac electrogram (IEGM) signals and surface electrocardiogram (EKG) signals and hence can be performed by an external programmer without requiring Doppler echocardiography or other cardiac performance monitoring techniques. In another example, wherein the implanted device is equipped with a coronary sinus lead, the technique uses only IEGM signals and hence can be performed by the device itself.
    • 提供了用于估计用于起搏心室的最佳房室延迟值的技术。 对于患者确定内在的心房传导延迟和内在的房室传导延迟,然后从其导出优选的房室起搏延迟。 通过考虑内在的心房延迟以及内在房室延迟,相信可以实现比仅考虑固有房室延迟值的技术更可靠的估计患者的真正最佳房室延迟值。 在一个示例中,该技术使用心内电描记图(IEGM)信号和表面心电图(EKG)信号,因此可以由外部编程器执行,而不需要多普勒超声心动图或其他心脏监测技术。 在另一示例中,其中植入的装置配备有冠状窦引线,该技术仅使用IEGM信号,因此可以由装置本身执行。
    • 10. 发明申请
    • Optical system and element for detecting ice and water
    • 用于检测冰和水的光学系统和元件
    • US20070001861A1
    • 2007-01-04
    • US11168363
    • 2005-06-29
    • Paul Levine
    • Paul Levine
    • G08B19/02
    • G08B19/02
    • An optical system for detecting ice and water on the surface of an aircraft includes an elongated transparent optical element having first and second end portions. A light source and light detector are disposed in one end of the optical element and a reflective surface is disposed in the opposite end portion. The reflective surface defines a critical angle and reflects light from the light source to the light detector when the critical angle is in contact with air and refracts the light toward the external environment when the reflective surface is in contact with ice or water. The system may also incorporate an optical element wherein the reflective surface includes a continuous array of convex elements extending outwardly from and across one end of the optical element and wherein each of the convex elements defines a critical angle.
    • 用于检测飞机表面上的冰和水的光学系统包括具有第一和第二端部的细长透明光学元件。 光源和光检测器设置在光学元件的一端,并且反射表面设置在相对的端部。 当反射表面与冰或水接触时,当临界角与空气接触并且将光折射到外部环境时,反射表面限定临界角度并将来自光源的光反射到光检测器。 该系统还可以包括光学元件,其中反射表面包括从光学元件的一端向外延伸并穿过该光学元件的一端的连续阵列的凸起元件,并且其中每个凸起元件限定临界角。