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    • 44. 发明授权
    • Pacing channel isolation in multi-site cardiac pacing systems
    • 多点心脏起搏系统起搏通道隔离
    • US06711437B2
    • 2004-03-23
    • US09918225
    • 2001-07-30
    • David L. Thompson
    • David L. Thompson
    • A61N108
    • A61N1/368A61N1/3704
    • Cardiac pacing systems are disclosed for providing multi-site pacing in a single heart chamber or multi-chamber pacing in two or more heart chambers employing N pacing channels and miniaturized electrical isolation circuitry in up to N−1 pacing channels to minimize the effects of leakage currents generated during delivery of a pacing pulse in any one pacing channel from affecting sense amplifiers in the other pacing channels. Isolation of a the pace/sense electrodes from leakage currents is effected employing monolithic isolation circuit means. An isolated current replicator employing giant magnetoresistive (GMR) sense elements in conjunction with isolated planar cells fabricated in monolithic form is incorporated into conventional VLSI circuitry. Or, the monolithic isolation circuit means is formed of a micro-mechanical fabricated (MEMS) isolation transformer comprising low-loss input and output coils separated by an insulation layer that isolates the input coil from the output coil.
    • 公开了心脏起搏系统,用于在单个心室或多室起搏中在两个或更多个心室中提供多部位起搏,其采用N个起搏通道和最多N-1个起搏通道的小型化电隔离电路,以最小化泄漏的影响 在任何一个起搏通道中递送起搏脉冲期间产生的电流影响另一个起搏通道中的感测放大器。 使用单片隔离电路装置实现了从漏电流分离步调/感测电极。 采用巨磁阻(GMR)感测元件和单片形式制造的隔离平面单元的隔离电流复制器被并入传统的VLSI电路中。 或者,单片隔离电路装置由微机械制造(MEMS)隔离变压器形成,该变压器包括由输入线圈与输出线圈隔离的绝缘层隔开的低损耗输入和输出线圈。
    • 46. 发明授权
    • Magnetic field sensor for an implantable medical device
    • 用于可植入医疗器械的磁场传感器
    • US06580947B1
    • 2003-06-17
    • US09523674
    • 2000-03-10
    • David L. Thompson
    • David L. Thompson
    • A61N140
    • A61N1/37211H01H1/0036H01H36/00H01H2036/0093
    • An implantable medical device (IMD) uses a solid-state sensor for detecting the application of an external magnetic field, the sensor comprises one or more magnetic field responsive microelectromechanical (MEM) switch fabricated in an IC coupled to a switch signal processing circuit of the IC that periodically determines the state of each MEM. The MEM switch comprises a moveable contact suspended over a fixed contact by a suspension member such that the MEM switch contacts are either normally open or normally closed. A ferromagnetic layer is formed on the suspension member, and the suspended contact is attracted or repelled toward or away from the fixed contact. The ferromagnetic layer, the characteristics of the suspension member, and the spacing of the switch contacts may be tailored to make the switch contacts close (or open) in response to a threshold magnetic field strength and/or polarity. A plurality of such magnetically actuated MEM switches are provided to cause the IMD to change operating mode or a parameter value and to enable or effect programming and uplink telemetry functions.
    • 可植入医疗装置(IMD)使用固态传感器来检测外部磁场的应用,该传感器包括一个或多个磁场响应微机电(MEM)开关,其在耦合到开关信号处理电路的IC中制造 定期确定每个MEM的状态的IC。 MEM开关包括通过悬挂构件悬挂在固定触点上的可移动触点,使得MEM开关触点是常开或常闭。 在悬挂构件上形成铁磁层,并且悬挂的触点朝向或远离固定触点被吸引或排斥。 铁磁层,悬挂构件的特性和开关触点的间隔可以被调整为使得开关触点响应于阈值磁场强度和/或极性而接近(或打开)。 提供多个这样的磁致动MEM开关以使得IMD改变操作模式或参数值,并且实现或实现编程和上行链路遥测功能。
    • 50. 发明授权
    • Implantable medical device using audible sound communication to provide
warnings
    • 可植入医疗器械采用声音通讯提供警告
    • US6067473A
    • 2000-05-23
    • US282594
    • 1999-03-31
    • Daniel R. GreeningerDavid L. ThompsonJerome T. Hartlaub
    • Daniel R. GreeningerDavid L. ThompsonJerome T. Hartlaub
    • A61N1/372A61N1/36
    • A61N1/37258
    • Methods and apparatus for interrogation of implantable medical device (IMD) information, including programmed parameter values, operating modes and programmed changes thereof and data stored in the IMD, by emission of audible sounds by the IMD are disclosed. The IMD includes an audio transducer that emits audible sounds including voiced statements or musical tones stored in analog memory correlated to a programming or interrogation operating algorithm or to a warning trigger event. The audible sounds can comprise the sole uplink transmission or may augment the contemporaneous uplink RF transmission of stored data, and/or programmed operating modes and parameters and/or device operations and states in an interrogation or during programming. To conserve energy, the audible sounds accompanying interrogation and programming of the IMD are at a low volume that preferably cannot be heard without use of an external audio amplifier or stethoscope. Voiced statements warning of battery energy depletion or imminent delivery of a therapy are emitted at a higher volume that is sufficient to be heard by the patient, so that the patient can take appropriate action. The volume of audible sounds confirming programmed changes made by a patient using a limited function programmer or magnet is also increased so that the patient can hear them.
    • 公开了通过IMD发出可听见的声音来询问可植入医疗装置(IMD)信息的方法和装置,其中包括编程参数值,操作模式及其编程改变以及存储在IMD中的数据。 IMD包括音频换能器,其发射可听声音,包括存储在与编程或询问操作算法相关的模拟存储器中的语音或音调,或者到警告触发事件。 可听见的声音可以包括唯一的上行链路传输,或者可以在询问中或在编程期间增加存储数据的同时期上行链路RF传输和/或编程的操作模式和参数和/或设备操作和状态。 为了节省能量,伴随着IMD的询问和编程的可听见的声音处于较低的音量,最好在不使用外部音频放大器或听诊器的情况下听不到声音。 电池能量消耗或治疗即将发送的声明声明以足以由患者听到的较高音量发出,以便患者能够采取适当的动作。 使用有限功能的编程器或磁铁确认病人进行的编程改变的可听见声音的音量也增加,以便患者可以听到它们的声音。