Methods and apparatus for reducing spurious signals in implantable medical devices caused by x-ray radiation
    1.
    发明授权
    Methods and apparatus for reducing spurious signals in implantable medical devices caused by x-ray radiation 失效
    用于减少由X射线辐射引起的可植入医疗器械中的寄生信号的方法和装置

    公开(公告)号:US08706222B2

    公开(公告)日:2014-04-22

    申请号:US12759443

    申请日:2010-04-13

    IPC分类号: A61N1/00

    摘要: An implantable medical device (IMD) includes a detector for detecting the presence of x-ray radiation, where the presence of x-ray radiation is detected in response to the strength of the x-ray radiation exceeding a first threshold. In one embodiment, the IMD includes a processor for adjusting a cardiac stimulation rate IMD in response to determining that the strength of the detected x-ray radiation exceeds a second threshold. The second pre-selected x-ray radiation threshold is greater than the first pre-selected x-ray radiation threshold. In another embodiment, the implantable device includes a detector for detecting the presence of any amount x-ray radiation and a processor for adjusting a stimulation rate provided by the IMD in response to detected x-ray radiation to reduce the chance of over-sampling artifacts or inappropriate therapy delivery.

    摘要翻译: 可植入医疗装置(IMD)包括用于检测X射线辐射的存在的检测器,其中响应于x射线辐射的强度超过第一阈值检测x射线辐射的存在。 在一个实施例中,IMD包括用于响应于确定检测到的X射线辐射的强度超过第二阈值来调整心脏刺激速率IMD的处理器。 第二预选x射线辐射阈值大于第一预选x射线辐射阈值。 在另一个实施例中,可植入装置包括用于检测任何量X射线辐射的存在的检测器和用于响应于检测到的X射线辐射来调整由IMD提供的刺激速率的处理器,以减少过度采样伪像的机会 或不适当的治疗递送。

    Radiation-based timer for implantable medical devices
    2.
    发明授权
    Radiation-based timer for implantable medical devices 有权
    用于可植入医疗器械的基于辐射的计时器

    公开(公告)号:US07935935B2

    公开(公告)日:2011-05-03

    申请号:US12394179

    申请日:2009-02-27

    IPC分类号: G01J1/42

    摘要: A radiation-based timer for use in an implantable medical device (IMD) includes a radiation source and a radiation detection circuit. The radiation source emits radiation particles during a process referred to as radioactive decay. The radiation detection circuit detects the radiation particles emitted during the decay process and tracks the number of radiation particles detected. When the number of radiation particles detected reaches a threshold value, a timer signal is generated. In this manner, the radiation-based timer generates a timer signal as a function of the radioactive decay of the radiation source. The timer signal may be used by one or more components of the IMD for any of a number of functions, including as a wakeup trigger for a communications and/or a sensor event.

    摘要翻译: 用于可植入医疗装置(IMD)的基于辐射的定时器包括辐射源和放射线检测电路。 辐射源在被称为放射性衰变的过程中发射辐射粒子。 辐射检测电路检测在衰变过程中发射的辐射粒子,并跟踪检测到的辐射粒子的数量。 当检测到的辐射粒子的数量达到阈值时,产生定时器信号。 以这种方式,基于辐射的定时器产生作为辐射源的放射性衰减的函数的定时器信号。 定时器信号可以由IMD的一个或多个组件用于多个功能中的任何一个,包括用于通信和/或传感器事件的唤醒触发。

    Methods and apparatus for reducing spurious signals in implantable medical devices caused by x-ray radiation
    3.
    发明授权
    Methods and apparatus for reducing spurious signals in implantable medical devices caused by x-ray radiation 失效
    用于减少由X射线辐射引起的可植入医疗器械中的寄生信号的方法和装置

    公开(公告)号:US07697988B2

    公开(公告)日:2010-04-13

    申请号:US11096671

    申请日:2005-03-31

    IPC分类号: A61N1/00

    摘要: An implantable medical device (IMD) includes a detector for detecting the presence of x-ray radiation, where the presence of x-ray radiation is detected in response to the strength of the x-ray radiation exceeding a first threshold. In one embodiment, the IMD includes a processor for adjusting a cardiac stimulation rate IMD in response to determining that the strength of the detected x-ray radiation exceeds a second threshold. The second pre-selected x-ray radiation threshold is greater than the first pre-selected x-ray radiation threshold. In another embodiment, the implantable device includes a detector for detecting the presence of any amount x-ray radiation and a processor for adjusting a stimulation rate provided by the IMD in response to detected x-ray radiation to reduce the chance of over-sampling artifacts or inappropriate therapy delivery.

    摘要翻译: 可植入医疗装置(IMD)包括用于检测X射线辐射的存在的检测器,其中响应于x射线辐射的强度超过第一阈值检测x射线辐射的存在。 在一个实施例中,IMD包括用于响应于确定检测到的X射线辐射的强度超过第二阈值来调整心脏刺激速率IMD的处理器。 第二预选x射线辐射阈值大于第一预选x射线辐射阈值。 在另一个实施例中,可植入装置包括用于检测任何量X射线辐射的存在的检测器和用于响应于检测到的X射线辐射来调整由IMD提供的刺激速率的处理器,以减少过度采样伪像的机会 或不适当的治疗递送。

    Apparatus and method for shunting induced currents in an electrical lead
    4.
    发明授权
    Apparatus and method for shunting induced currents in an electrical lead 有权
    用于在电引线中分流感应电流的装置和方法

    公开(公告)号:US06871091B2

    公开(公告)日:2005-03-22

    申请号:US09999381

    申请日:2001-10-31

    CPC分类号: A61N1/056 A61N1/086

    摘要: An electrical lead includes an elongate body having a proximal end portion and a distal end portion, a first electrode disposed adjacent and joined to the distal end portion of the elongate body, and a first conductor extending between the proximal end portion and the distal end portion of the elongate body and being electrically coupled to the first electrode. The medical electrical lead further comprises a second electrode disposed adjacent the first electrode and joined to the elongate body and a capacitive device electrically coupled to the first conductor and the second electrode.

    摘要翻译: 电引线包括具有近端部分和远端部分的细长主体,与细长主体的远端部分相邻并连接的第一电极,以及在近端部分和远端部分之间延伸的第一导体 并且电耦合到第一电极。 医疗电引线还包括邻近第一电极设置并连接到细长主体的第二电极和电耦合到第一导体和第二电极的电容性装置。

    Interruptable multiply and/or divide operations for use with an interrupt in a medical device processor
    5.
    发明授权
    Interruptable multiply and/or divide operations for use with an interrupt in a medical device processor 失效
    用于医疗设备处理器中断的可中断乘法和/或除法操作

    公开(公告)号:US06286346B1

    公开(公告)日:2001-09-11

    申请号:US09070407

    申请日:1998-04-30

    IPC分类号: G06F9302

    摘要: A method and apparatus including conditional add and conditional add/subtract instructions are provided for use in the instruction set of a medical device instruction processor. More specifically, the conditional add and add/subtract instructions are provided to add two operands if a predetermined condition is satisfied within the instruction processor hardware. Additionally, the conditional add/subtract instruction may be used to subtract one operand from another operand if the predetermined condition is not satisfied. These instructions are adapted for use in implementing an efficient, interruptible, firmware-controlled multiplication or division mechanism. The inventive system allows multiplication or division operations to be interrupted at various intermediate points during the multiplication or division operation to thereby reducing interrupt latency.

    摘要翻译: 提供了一种包括条件加法和条件加法/减法指令的方法和装置,用于医疗器械指令处理器的指令集。 更具体地,如果在指令处理器硬件内满足预定条件,则提供条件加法和减法指令以添加两个操作数。 此外,如果不满足预定条件,则可以使用条件加法/减法指令从另一个操作数中减去一个操作数。 这些指令适用于实现高效,可中断的固件控制的乘法或除法机制。 本发明的系统允许在乘法或除法操作期间在各个中间点中断乘法或除法运算,从而减少中断等待时间。

    RADIATION-BASED TIMER FOR IMPLANTABLE MEDICAL DEVICES
    6.
    发明申请
    RADIATION-BASED TIMER FOR IMPLANTABLE MEDICAL DEVICES 有权
    用于可植入医疗器械的基于辐射的定时器

    公开(公告)号:US20100219351A1

    公开(公告)日:2010-09-02

    申请号:US12394179

    申请日:2009-02-27

    IPC分类号: G01J1/42 G04B47/00

    摘要: A radiation-based timer for use in an implantable medical device (IMD) includes a radiation source and a radiation detection circuit. The radiation source emits radiation particles during a process referred to as radioactive decay. The radiation detection circuit detects the radiation particles emitted during the decay process and tracks the number of radiation particles detected. When the number of radiation particles detected reaches a threshold value, a timer signal is generated. In this manner, the radiation-based timer generates a timer signal as a function of the radioactive decay of the radiation source. The timer signal may be used by one or more components of the IMD for any of a number of functions, including as a wakeup trigger for a communications and/or a sensor event.

    摘要翻译: 用于可植入医疗装置(IMD)的基于辐射的定时器包括辐射源和放射线检测电路。 辐射源在被称为放射性衰变的过程中发射辐射粒子。 辐射检测电路检测在衰变过程中发射的辐射粒子,并跟踪检测到的辐射粒子的数量。 当检测到的辐射粒子的数量达到阈值时,产生定时器信号。 以这种方式,基于辐射的定时器产生作为辐射源的放射性衰减的函数的定时器信号。 定时器信号可以由IMD的一个或多个组件用于多个功能中的任何一个,包括用于通信和/或传感器事件的唤醒触发。

    METHODS AND APPARATUS FOR REDUCING SPURIOUS SIGNALS IN IMPLANTABLE MEDICAL DEVICES CAUSED BY X-RAY RADIATION
    7.
    发明申请
    METHODS AND APPARATUS FOR REDUCING SPURIOUS SIGNALS IN IMPLANTABLE MEDICAL DEVICES CAUSED BY X-RAY RADIATION 失效
    用于减少由X射线辐射引起的可植入医疗器械中的SPURIOUS信号的方法和装置

    公开(公告)号:US20100204743A1

    公开(公告)日:2010-08-12

    申请号:US12759443

    申请日:2010-04-13

    IPC分类号: A61N1/37

    摘要: An implantable medical device (IMD) includes a detector for detecting the presence of x-ray radiation, where the presence of x-ray radiation is detected in response to the strength of the x-ray radiation exceeding a first threshold. In one embodiment, the IMD includes a processor for adjusting a cardiac stimulation rate IMD in response to determining that the strength of the detected x-ray radiation exceeds a second threshold. The second pre-selected x-ray radiation threshold is greater than the first pre-selected x-ray radiation threshold. In another embodiment, the implantable device includes a detector for detecting the presence of any amount x-ray radiation and a processor for adjusting a stimulation rate provided by the IMD in response to detected x-ray radiation to reduce the chance of over-sampling artifacts or inappropriate therapy delivery.

    摘要翻译: 可植入医疗装置(IMD)包括用于检测X射线辐射的存在的检测器,其中响应于x射线辐射的强度超过第一阈值检测x射线辐射的存在。 在一个实施例中,IMD包括用于响应于确定检测到的X射线辐射的强度超过第二阈值来调整心脏刺激速率IMD的处理器。 第二预选x射线辐射阈值大于第一预选x射线辐射阈值。 在另一个实施例中,可植入装置包括用于检测任何量X射线辐射的存在的检测器和用于响应于检测到的X射线辐射来调整由IMD提供的刺激速率的处理器,以减少过度采样伪像的机会 或不适当的治疗递送。

    Cyclic redundancy calculation circuitry for use in medical devices and methods regarding same
    10.
    发明授权
    Cyclic redundancy calculation circuitry for use in medical devices and methods regarding same 有权
    用于医疗器械的循环冗余计算电路及其相关方法

    公开(公告)号:US06456875B1

    公开(公告)日:2002-09-24

    申请号:US09416667

    申请日:1999-10-12

    IPC分类号: H03M1309

    CPC分类号: H03M13/091

    摘要: Cyclic redundancy calculations are provided by operating on a data stream, e.g., a data stream in an implantable medical device, to perform a polynomial division thereon using one of a first cyclic redundancy code generator polynomial and a second cyclic redundancy code generator polynomial. The first cyclic redundancy code generator polynomial is a higher order polynomial than the second cyclic redundancy code generator polynomial and contains all terms of the second cyclic redundancy code generator polynomial. The polynomial division may be implemented using linear feedback shift register circuitry and circuitry to select between the use of the first or second cyclic redundancy code generator polynomial.

    摘要翻译: 通过对数据流(例如可植入医疗装置中的数据流)进行操作,使用第一循环冗余码生成多项式和第二循环冗余码生成多项式之一对其执行多项式除法来提供循环冗余计算。 第一循环冗余码生成多项式是比第二循环冗余码生成多项式更高阶的多项式,并且包含第二循环冗余码生成多项式的所有项。 可以使用线性反馈移位寄存器电路和电路来实现多项式除法,以在使用第一或第二循环冗余码生成多项式之间进行选择。