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    • 54. 发明授权
    • Implantable multi-axis position and activity sensor
    • 可植入多轴位置和活动传感器
    • US5233984A
    • 1993-08-10
    • US677699
    • 1991-03-29
    • David L. Thompson
    • David L. Thompson
    • A61N1/365G01C9/06G01C9/18G01C9/20
    • A61N1/36542G01C9/06G01C9/20A61N1/36535G01C2009/068G01C2009/182
    • A multi-axis, multi-purpose sensor for use with implantable medical devices, and for simultaneously detecting the patient's posture and activity level. The sensor includes a hermetically sealed, fluid-tight, bio-compatible housing. The housing is formed of a plurality of adjacently secured sides, and a plurality of side electrodes coupled to the sides. A central electrode is disposed at the geometric center of symmetry of the housing, to allow measurement of voltage changes between the central electrode and the side electrodes. A non-toxic electrically conductive electrolyte fills about half the housing, and immerses part of the central electrode and the side electrodes. The sensor further includes a low frequency bandpass filter for passing low frequency signals indicative of the patient's posture, and a high frequency bandpass filter for passing high frequency signals indicative of the patient's activity.
    • 一种用于可植入医疗设备的多轴多用途传感器,并用于同时检测患者的姿势和活动水平。 该传感器包括密封的,流体密封的生物兼容的壳体。 壳体由多个相邻固定的侧面以及耦合到该侧面的多个侧面电极形成。 中心电极设置在壳体的几何对称中心处,以允许测量中心电极和侧电极之间的电压变化。 无毒的导电电解质填充了壳体的大约一半,并且将中心电极和侧电极的一部分浸渍。 传感器还包括用于传递指示患者姿势的低频信号的低频带通滤波器和用于通过表示患者活动的高频信号的高频带通滤波器。