Automatic adjustment of detection rate threshold in an implantable
antitachycardia therapy device
    1.
    发明授权
    Automatic adjustment of detection rate threshold in an implantable antitachycardia therapy device 失效
    在植入式抗心律失常治疗装置中自动调整检测率阈值

    公开(公告)号:US5882352A

    公开(公告)日:1999-03-16

    申请号:US449970

    申请日:1995-05-25

    IPC分类号: A61N1/362 A61N1/365 A61N1/39

    摘要: An antitachycardia stimulation device that automatically adjusts its detection rate threshold as a function of a sensed physiological parameter indicative of cardiac rate. The implantable antitachycardia stimulation device includes heart rate detection circuitry and antitachycardia therapy circuitry for applying a specific antitachycardia therapy in the event that the detected heart rate falls within at least one tachycardia rate zone. The tachycardia rate zone is defined by a lower threshold limit, and may also be defined by an upper threshold limit if more than one rate zone is used. The lower threshold limit is automatically adjusted as a function of an independently sensed physiological parameter that predicts a normal or natural change in the heart rate. If more then one rate zone is used, other threshold limits may also be adjusted automatically as a separate function of the same sensed physiological parameter. In one embodiment of the invention, the implantable stimulation device comprises a rate-responsive pacemaker, and the sensed physiological parameter used to adjust the rate threshold limit(s) is also used to define a sensor indicated rate signal to control the pacing rate of the pacemaker.

    摘要翻译: 一种抗心动过速刺激装置,其自动调整其检测率阈值作为指示心率的感测生理参数的函数。 可植入的抗心动过速刺激装置包括心率检测电路和用于在检测到的心率落入至少一个心动过速率区域的情况下应用特异性抗心动过速治疗的抗心动过速治疗电路。 心动过速速率区域由较低的阈值限制定义,如果使用多个速率区域,也可以通过上限阈值来定义。 根据预测心率正常或自然变化的独立感知的生理参数的函数自动调整下限阈值。 如果使用多于一个速率区域,则其他阈值限制也可以被自动调整为相同感测生理参数的分离函数。 在本发明的一个实施例中,可植入刺激装置包括速率响应起搏器,并且用于调整速率阈值极限的感测生理参数也用于定义传感器指示的速率信号,以控制起搏速率 起搏器。

    Selective potting for controlled failure and electronic devices employing the same
    2.
    发明授权
    Selective potting for controlled failure and electronic devices employing the same 有权
    用于控制故障的选择性灌封和采用其的电子设备

    公开(公告)号:US07187528B2

    公开(公告)日:2007-03-06

    申请号:US10815183

    申请日:2004-03-31

    IPC分类号: H02H7/00

    摘要: A selectively protected electrical system includes or operates with a power source, a load, a power driver circuit for controllably transferring power from the power source to the load, the power driver circuit being encapsulated in a potting material, and a controller for enabling and disabling the power driver circuit, the controller being un-encapsulated by the potting material. If a contaminant induced electrical fault occurs in the selectively protected electrical system, the electrical fault is more likely to occur in the un-encapsulated controller, such that the selectively protected electrical system is disabled. The contaminant is inhibited from contacting and inducing an electrical fault in the power driver circuit, thus providing for a controlled failure of the selectively protected electrical system.

    摘要翻译: 选择性保护的电气系统包括或操作电源,负载,用于从电源可控地传递电力到负载的功率驱动器电路,封装在封装材料中的功率驱动器电路以及用于启用和禁用的控制器 电源驱动器电路,控制器由灌封材料未封装。 如果在选择性保护的电气系统中发生污染物引起的电气故障,则在非封装控制器中更可能发生电气故障,使得有选择地受保护的电气系统被禁用。 污染物被禁止接触并引起电力驱动器电路中的电气故障,从而提供有选择地受保护的电气系统的受控故障。

    Methods, apparatuses, and uses for infusion pump fluid pressure and force detection
    3.
    发明授权
    Methods, apparatuses, and uses for infusion pump fluid pressure and force detection 有权
    输液泵流体压力和力检测的方法,装置和用途

    公开(公告)号:US06659980B2

    公开(公告)日:2003-12-09

    申请号:US10302002

    申请日:2002-11-22

    IPC分类号: A61M3700

    摘要: An occlusion detection system detects an occlusion in a fluid path of an infusion pump. The infusion pump is for delivering fluid to a user. The infusion pump includes a housing, a motor, a reservoir, one or more drive train components, a sensor, and an electronics system. The motor is contained within the housing. The reservoir contains the fluid to be delivered. The one or more drive train components react to stimulus from the motor to force the fluid from the reservoir into the user. The sensor is positioned to measure a parameter associated with the motor or a drive train component, and the sensor produces three or more output levels across a range of measurements. The electronics system processes the sensor output levels to declare when an occlusion exists.

    摘要翻译: 闭塞检测系统检测输液泵的流体路径中的阻塞。 输液泵用于向使用者输送流体。 输液泵包括壳体,马达,储存器,一个或多个传动系组件,传感器和电子系统。 电机包含在外壳内。 储存器包含待输送的流体。 一个或多个传动系部件对来自马达的刺激作用反应,以迫使流体从储存器进入使用者。 定位传感器以测量与电动机或传动系组件相关联的参数,并且传感器在一定范围的测量中产生三个或更多个输出电平。 电子系统处理传感器输出电平以声明当存在闭塞时。

    Implantable cardiac device having event recording capability with
compression
    5.
    发明授权
    Implantable cardiac device having event recording capability with compression 有权
    具有压缩事件记录能力的可植入心脏装置

    公开(公告)号:US6161043A

    公开(公告)日:2000-12-12

    申请号:US255140

    申请日:1999-02-22

    摘要: An implantable cardiac device is disclosed having a converter that provides a digital electrocardiogram signal to a controller which is stored in memory or transmitted via the telemetry circuit in an improved compressed fashion. The improved compression scheme comprises sampling the electrogram signal, transmitting the starting value in an uncompressed format followed by a plurality of delta signals in a compressed format. The delta signals may be determined by subtracting successive signals or by subtracting a predicted value from the current value. In either case, the delta signal is then transmitted in a truncated number of bits, e.g., 2 or 4 bits. When the delta signal is too large to be represented in the compressed number of bits, the controller then provides an indicator signal followed by the delta signal in the uncompressed format. In addition, whenever successive delta signals are below a minimum threshold (e.g., zero), they may be compressed into a count.

    摘要翻译: 公开了一种可植入心脏装置,其具有向控制器提供数字心电图信号的转换器,该控制器存储在存储器中或者以经改进的压缩方式通过遥测电路传输。 改进的压缩方案包括对电描记图信号进行采样,以未压缩格式发送起始值,然后以压缩格式传送多个delta信号。 Δ信号可以通过减去连续信号或从当前值减去预测值来确定。 在任一种情况下,然后以截断的位数(例如2或4位)发送增量信号。 当增量信号太大而不能在压缩位数中表示时,控制器随后以未压缩格式提供指示符信号,后跟增量信号。 此外,每当连续的delta信号低于最小阈值(例如,零)时,它们可以被压缩成计数。

    Control tabs for infusion devices and methods of using the same
    7.
    发明授权
    Control tabs for infusion devices and methods of using the same 有权
    输液装置的控制标签及其使用方法

    公开(公告)号:US08613726B2

    公开(公告)日:2013-12-24

    申请号:US12689887

    申请日:2010-01-19

    IPC分类号: A61M37/00

    摘要: An external infusion device that infuses a fluid into an individual's body includes a housing, a reservoir, a drive system, a power supply, electrical elements, and a tab. The reservoir contains the fluid, and the drive system forces the fluid from the reservoir. The electrical elements control the power to the drive system to regulate the rate that fluid is forced from the reservoir. The tab mates with the housing, and contains at least one electrical element. The tab is removable, and may be replaced with a different tab. The different tab may change the rate fluid is forced from the reservoir. A tab may be removed from one external infusion device and installed in a different external infusion device. The tab may be limited to use in a predetermined number of external infusion devices and may include a power supply.

    摘要翻译: 将流体注入个体的外部输注装置包括壳体,储存器,驱动系统,电源,电气元件和突片。 储存器包含流体,并且驱动系统迫使来自储存器的流体。 电气元件控制驱动系统的功率,以调节流体从储存器被迫的速率。 该卡舌与外壳配合,并且至少包含一个电气元件。 标签是可移动的,可以用不同的标签替换。 不同的标签可能会改变流体从储存器被迫的速率。 可以从一个外部输注装置移除翼片并将其安装在不同的外部输注装置中。 可以将突片限制为在预定数量的外部输注装置中使用,并且可以包括电源。

    Electronic device for controlled failure
    8.
    发明授权
    Electronic device for controlled failure 失效
    用于受控故障的电子设备

    公开(公告)号:US07760481B2

    公开(公告)日:2010-07-20

    申请号:US12166210

    申请日:2008-07-01

    IPC分类号: H02H7/00

    摘要: A selectively protected electrical system includes or operates with a power source, a load, a power driver circuit for controllably transferring power from the power source to the load, the power driver circuit being encapsulated in a potting material, and a controller for enabling and disabling the power driver circuit, the controller being un-encapsulated by the potting material. If a contaminant induced electrical fault occurs in the selectively protected electrical system, the electrical fault is more likely to occur in the un-encapsulated controller, such that the selectively protected electrical system is disabled. The contaminant is inhibited from contacting and inducing an electrical fault in the power driver circuit, thus providing for a controlled failure of the selectively protected electrical system.

    摘要翻译: 选择性保护的电气系统包括或操作电源,负载,用于从电源可控地传递电力到负载的功率驱动器电路,封装在封装材料中的功率驱动器电路以及用于启用和禁用的控制器 电源驱动器电路,控制器由灌封材料未封装。 如果在选择性保护的电气系统中发生污染物引起的电气故障,则在非封装控制器中更可能发生电气故障,使得有选择地受保护的电气系统被禁用。 污染物被禁止接触并引起电力驱动器电路中的电气故障,从而提供有选择地受保护的电气系统的受控故障。