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    • 3. 发明申请
    • INTEGRATED CIRCUIT IMPLEMENTATION AND FAULT CONTROL SYSTEM, DEVICE, AND METHOD
    • 集成电路实现和故障控制系统,设备和方法
    • WO2009131749A3
    • 2010-01-07
    • PCT/US2009035586
    • 2009-02-27
    • PROTEUS BIOMEDICAL INCBI YAFEILI HAIFENGZDEBLICK MARKTHOMPSON TODDLEICHNER ROBERT
    • BI YAFEILI HAIFENGZDEBLICK MARKTHOMPSON TODDLEICHNER ROBERT
    • A61N1/372A61N1/36A61N1/365A61N1/375A61N1/378
    • A61N1/05A61N1/025A61N1/37A61N1/378
    • Apparatus and methods enable robust, reliable control for implantable medical devices, including cardiac pacemakers, defibrillators and cardiac resynchronization devices. Integrated circuits in the devices have minimized interfaces, can derive power from the interface signals, and have high voltage and latch-up protection. A device lead has a power generation circuit and a switching circuit using cascaded PMOS transistors for operating with a stable voltage despite fluctuations in the supplied voltage. The lead has control electronics that provide a very low impedance between an electrode and a lead conductor during most of the duration of a pacing pulse, but during a brief initial portion of the pacing pulse, provide a very high impedance to permit charging up a power supply that is local to the control electronics. A method of stabilizing the external impedance and a system for fault detection and fault recovery for an implantable device are also provided.
    • 装置和方法能够对可植入医疗装置(包括心脏起搏器,除颤器和心脏再同步装置)进行可靠的,可靠的控制。 器件中的集成电路具有最小化的接口,可以从接口信号中获取功率,并具有高电压和闭锁保护。 器件引线具有发电电路和使用级联PMOS晶体管的开关电路,用于尽管工作电压的波动,以稳定的电压工作。 引线具有控制电子学,其在起搏脉冲的大部分持续时间期间在电极和引线导体之间提供非常低的阻抗,但是在起搏脉冲的短暂初始部分期间,提供非常高的阻抗以允许充电电力 供应是本地控制电子产品。 还提供了稳定外部阻抗的方法和用于可植入装置的故障检测和故障恢复的系统。
    • 8. 发明申请
    • VOLUME SENSING
    • 体积感知
    • WO2010105250A3
    • 2011-01-13
    • PCT/US2010027261
    • 2010-03-13
    • PROTEUS BIOMEDICAL INCZDEBLICK MARK
    • ZDEBLICK MARK
    • A61B5/0295
    • A61B5/029A61B5/0535A61B5/0538A61B5/6846
    • Each sensor in one or more pairs of sensors is associated with a particular tissue, for example a first tissue location and a second tissue location respectively. Tissue at a particular tissue location may be solid, for example, muscle tissue, fat tissue, etc., or fluid, for example, blood, fluids associated with edema, etc. The area between the two tissue locations associated with a pair of sensors may comprise solid tissue, fluid tissue, an empty chamber, or combinations thereof. For each pair of sensors in the at least one pair of sensors, a first impedance measurement between the pair of sensors and associated with a first frequency is determined. For each pair of sensors in the at least one pair of sensors, a second impedance measurement between the pair of sensors and associated with a second frequency is determined. A comparison of a ratio of the first impedance measurement at a point in time to the second impedance measurement at a corresponding point in time may be made to determine a volume- related value associated with an area located between the first tissue location and the second tissue location.
    • 一对或多对传感器中的每个传感器分别与特定组织,例如第一组织位置和第二组织位置相关联。 在特定组织位置处的组织可以是实心的,例如肌肉组织,脂肪组织等,或流体,例如血液,与水肿相关的流体等。与一对传感器相关联的两个组织位置之间的区域 可以包括固体组织,流体组织,空腔或其组合。 对于至少一对传感器中的每对传感器,确定该对传感器之间并与第一频率相关联的第一阻抗测量。 对于至少一对传感器中的每对传感器,确定一对传感器之间并与第二频率相关联的第二阻抗测量。 可以对在相应时间点的时间点上的第一阻抗测量值与第二阻抗测量值的比率进行比较,以确定与位于第一组织位置和第二组织之间的区域相关联的体积相关值 位置。