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公开(公告)号：US5534018A
公开(公告)日：1996-07-09
申请号：US346661
申请日：1994-11-30
申请人： John D. Wahlstrand , Daniel J. Baxter , R. Michael Ecker , Daniel R. Greeninger , Charles G. Yerich
发明人： John D. Wahlstrand , Daniel J. Baxter , R. Michael Ecker , Daniel R. Greeninger , Charles G. Yerich
CPC分类号： A61N1/3706 , A61N2001/083
摘要： A method and apparatus for determining the availability of unipolar and/or bipolar pacing/sensing paths in a body-implantable cardiac pacing system. In one embodiment, a pacemaker system includes impedance monitoring circuitry for periodically measuring impedance between pairs of electrodes that are potentially available for pacing and/or sensing. This impedance monitoring circuitry includes circuitry for delivering excitation pulses between pairs of potentially available electrodes (including the pacemaker canister in the case of unipolar pacing or sensing), and for monitoring the current and voltage between those pairs of electrodes during delivery of an excitation pulse. Availability of a pair of electrodes for pacing and/or sensing is indicated if the impedance between a pair of electrodes is found to lie within a predetermined range. Detection of availability of a particular pair of electrodes is used initially as an indication that the pacing system has been implanted, and is also used to distinguish between unipolar and bipolar leads in the pacing system.
摘要翻译： 一种用于确定体内植入式心脏起搏系统中单极和/或双极起搏/感测路径的可用性的方法和装置。 在一个实施例中，起搏器系统包括用于周期性地测量潜在可用于起搏和/或感测的电极对之间的阻抗的阻抗监测电路。 该阻抗监测电路包括用于在潜在可用电极对（包括单极起搏或感测的情况下包括起搏器罐）之间传递激励脉冲的电路，以及用于在激励脉冲传送期间监测这些电极对之间的电流和电压。 如果发现一对电极之间的阻抗位于预定范围内，则指示用于起搏和/或感测的一对电极的可用性。 最初使用特定对电极的可用性的检测作为起搏系统已植入的指示，并且还用于区分起搏系统中的单极和双极引线。
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公开(公告)号：US5271395A
公开(公告)日：1993-12-21
申请号：US870062
申请日：1992-04-17
CPC分类号： A61N1/36585
摘要： A rate-responsive cardiac pacemaker comprising a minute ventilation circuit and an activity circuit. The minute ventilation circuit computes a first target pacing rate as a function of measurements of the patient's pleural blood impedance, and the activity circuit computes a second target pacing rate as a function of measured levels of patient activity. A rate control function establishes a rate-responsive pacing rate based on the first and second target pacing rates. The minute ventilation circuit delta-modulates an analog impedance waveform and maintains short-term and long-term weighted averages of delta-modulator output counts. Variations in the difference between the short-term and long-term weighted average values are determinative of the first target pacing rate. Variations in an activity sensor output signal are determinative of the second target pacing rate. Physician-programmable parameters for the pacemaker include selection of a rate-response setting, upper and lower pacing rate limits, and rate-smoothing attack and decay settings.
摘要翻译： 一种速率响应心脏起搏器，包括微通风回路和活动电路。 分钟通气电路根据患者胸膜血阻抗的测量值来计算第一目标起搏速率，并且活动电路根据测量的患者活动水平计算第二目标起搏速率。 速率控制功能基于第一和第二目标起搏速率建立速率响应起搏速率。 分钟通风电路对模拟阻抗波形进行delta调制，并维持Δ调制器输出计数的短期和长期加权平均值。 短期和长期加权平均值差异的变化是第一个目标起搏率的决定因素。 活动传感器输出信号的变化是第二目标起搏速率的决定因素。 心脏起搏器的医师可编程参数包括选择速率响应设置，上限和下限起搏速率限制以及速率平滑攻击和衰减设置。
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公开(公告)号：US5902325A
公开(公告)日：1999-05-11
申请号：US126469
申请日：1998-07-30
申请人： Catherine R. Condie , Daniel J. Baxter , William J. Combs , Daniel J. Greeninger , Karen J. Kleckner , H. Toby Markowitz , John C. Stroebel , John D. Wahlstrand
发明人： Catherine R. Condie , Daniel J. Baxter , William J. Combs , Daniel J. Greeninger , Karen J. Kleckner , H. Toby Markowitz , John C. Stroebel , John D. Wahlstrand
CPC分类号： A61N1/36521 , A61N1/3712 , A61N1/3714
摘要： A method and apparatus for automatic determination of a pacemaker patient's pacing stimulation threshold. Circuitry is provided in a pacemaker for obtaining a signal reflecting cardiac impedance, which is known to reliably reflect certain aspects of cardiac function. Circuitry is also provided for monitoring the cardiac impedance waveform during a predetermined capture detect window following delivery of stimulating pulses. One or more values are derived which characterize the morphology of the impedance waveform during the capture detect window associated with each stimulation pulse delivered. These values are compared to predetermined control values in order to assess whether a stimulation pulse has achieved cardiac capture. The assessment of whether cardiac capture has been achieved is also based partly upon the conventional sensing of atrial and/or ventricular cardiac signals occurring during the capture detect window. In one embodiment of the invention, the control values against which impedance waveform characterization values are compared are obtained by delivering a series of stimulation pulses having sufficient energy to ensure that capture is achieved, and by monitoring the impedance waveform during delivery of these pulses.
摘要翻译： 一种用于自动确定起搏器患者起搏刺激阈值的方法和装置。 在起搏器中提供电路以获得反映心脏阻抗的信号，这已知可靠地反映心脏功能的某些方面。 还提供电路用于在传送刺激脉冲之后的预定捕获检测窗口期间监测心脏阻抗波形。 导出一个或多个值，其表征在与递送的每个刺激脉冲相关联的捕获检测窗口期间阻抗波形的形态。 将这些值与预定的控制值进行比较，以便评估刺激脉冲是否已经实现心脏捕获。 是否已经实现心脏捕获的评估也部分地基于在捕获检测窗口期间发生的心房和/或心室心脏信号的常规感测。 在本发明的一个实施例中，通过递送具有足够能量的一系列刺激脉冲来确定阻抗波形表征值被比较的控制值，以确保实现捕获，并且通过在传送这些脉冲期间监视阻抗波形来获得。
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公开(公告)号：US5843137A
公开(公告)日：1998-12-01
申请号：US784687
申请日：1997-01-22
申请人： Catherine R. Condie , Daniel J. Baxter , William J. Combs , Daniel J. Greeninger , Karen J. Kleckner , H. Toby Markowitz , John C. Stroebel , John D. Wahlstrand
发明人： Catherine R. Condie , Daniel J. Baxter , William J. Combs , Daniel J. Greeninger , Karen J. Kleckner , H. Toby Markowitz , John C. Stroebel , John D. Wahlstrand
CPC分类号： A61N1/36521 , A61N1/3712 , A61N1/3714
摘要： A method and apparatus for automatic determination of a pacemaker patient's pacing stimulation threshold. Circuitry is provided in a pacemaker for obtaining a signal reflecting cardiac impedance, which is known to reliably reflect certain aspects of cardiac function. Circuitry is also provided for monitoring the cardiac impedance waveform during a predetermined capture detect window following delivery of stimulating pulses. One or more values are derived which characterize the morphology of the impedance waveform during the capture detect window associated with each stimulation pulse delivered. These values are compared to predetermined control values in order to assess whether a stimulation pulse has achieved cardiac capture. The assessment of whether cardiac capture has been achieved is also based partly upon the conventional sensing of atrial and/or ventricular cardiac signals occurring during the capture detect window. In one embodiment of the invention, the control values against which impedance waveform characterization values are compared are obtained by delivering a series of stimulation pulses having sufficient energy to ensure that capture is achieved, and by monitoring the impedance waveform during delivery of these pulses.
摘要翻译： 一种用于自动确定起搏器患者起搏刺激阈值的方法和装置。 在起搏器中提供电路以获得反映心脏阻抗的信号，这已知可靠地反映心脏功能的某些方面。 还提供电路用于在传送刺激脉冲之后的预定捕获检测窗口期间监测心脏阻抗波形。 导出一个或多个值，其表征在与递送的每个刺激脉冲相关联的捕获检测窗口期间阻抗波形的形态。 将这些值与预定的控制值进行比较，以便评估刺激脉冲是否已经实现心脏捕获。 是否已经实现心脏捕获的评估也部分地基于在捕获检测窗口期间发生的心房和/或心室心脏信号的常规感测。 在本发明的一个实施例中，通过递送具有足够能量的一系列刺激脉冲来确定阻抗波形表征值被比较的控制值，以确保实现捕获，并且通过在传送这些脉冲期间监视阻抗波形来获得。
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公开(公告)号：US5713933A
公开(公告)日：1998-02-03
申请号：US346815
申请日：1994-11-30
申请人： Catherine R. Condie , Daniel J. Baxter , William J. Combs , Daniel J. Greeninger , Karen J. Kleckner , H. Toby Markowitz , John C. Stroebel , John D. Wahlstrand
发明人： Catherine R. Condie , Daniel J. Baxter , William J. Combs , Daniel J. Greeninger , Karen J. Kleckner , H. Toby Markowitz , John C. Stroebel , John D. Wahlstrand
CPC分类号： A61N1/36521 , A61N1/3712 , A61N1/3714
摘要： A method and apparatus for automatic determination of a pacemaker patient's pacing stimulation threshold. Circuitry is provided in a pacemaker for obtaining a signal reflecting cardiac impedance, which is known to reliably reflect certain aspects of cardiac function. Circuitry is also provided for monitoring the cardiac impedance waveform during a predetermined capture detect window following delivery of stimulating pulses. One or more values are derived which characterize the morphology of the impedance waveform during the capture detect window associated with each stimulation pulse delivered. These values are compared to predetermined control values in order to assess whether a stimulation pulse has achieved cardiac capture. The assessment of whether cardiac capture has been achieved is also based partly upon the conventional sensing of atrial and/or ventricular cardiac signals occurring during the capture detect window. In one embodiment of the invention, the control values against which impedance waveform characterization values are compared are obtained by delivering a series of stimulation pulses having sufficient energy to ensure that capture is achieved, and by monitoring the impedance waveform during delivery of these pulses.
摘要翻译： 一种用于自动确定起搏器患者起搏刺激阈值的方法和装置。 在起搏器中提供电路以获得反映心脏阻抗的信号，这已知可靠地反映心脏功能的某些方面。 还提供电路用于在传送刺激脉冲之后的预定捕获检测窗口期间监测心脏阻抗波形。 导出一个或多个值，其表征在与递送的每个刺激脉冲相关联的捕获检测窗口期间阻抗波形的形态。 将这些值与预定的控制值进行比较，以便评估刺激脉冲是否已经实现心脏捕获。 是否已经实现心脏捕获的评估也部分地基于在捕获检测窗口期间发生的心房和/或心室心脏信号的常规感测。 在本发明的一个实施例中，通过递送具有足够能量的一系列刺激脉冲来确定阻抗波形表征值被比较的控制值，以确保实现捕获，并且通过在传送这些脉冲期间监视阻抗波形来获得。
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公开(公告)号：US5880579A
公开(公告)日：1999-03-09
申请号：US887487
申请日：1997-07-02
申请人： Shuran Wei , Daniel J. Baxter , Alan S. Fiedler
发明人： Shuran Wei , Daniel J. Baxter , Alan S. Fiedler
CPC分类号： H03L1/00 , G05F3/247 , H03K3/011 , H03K3/0231 , H03L7/0995 , H03L7/0891
摘要： A VCO supply voltage regulator includes a control voltage input, first and second supply voltage inputs, a regulated voltage output, a current source and an amplifier. The current source is coupled between the first voltage supply input and the regulated voltage output and has a bias input. The amplifier has an amplifier input coupled to the control voltage input, an amplifier output coupled to the bias input and a feedback input coupled to the regulated voltage output.
摘要翻译： VCO电源稳压器包括控制电压输入，第一和第二电源电压输入，稳压电压输出，电流源和放大器。 电流源耦合在第一电压源输入和调节电压输出之间并具有偏置输入。 放大器具有耦合到控制电压输入的放大器输入，耦合到偏置输入的放大器输出和耦合到稳压电压输出的反馈输入。
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公开(公告)号：US08616514B1
公开(公告)日：2013-12-31
申请号：US13114705
申请日：2011-05-24
申请人： Mason W. Baxter , Daniel J. Baxter
发明人： Mason W. Baxter , Daniel J. Baxter
IPC分类号： A45D19/04
CPC分类号： B25H1/0014 , B62H3/10
摘要： An off-road motorcycle stand is selectively adjustable between vertically-aligned and vertically-offset positions such that a user can drive a variety of motorcycles to the stand, lean the motorcycle onto the top plate and quickly park the motorcycle. Such a motorcycle stand preferably includes a base, a first support member connected to the base, and a second support member statically attached to the first support member such that the second support member is capable of engaging a portion of an existing motorcycle thereon. In this manner, the first support member may be selectively pivotal between vertically-aligned and vertically-offset positions relative to a centrally registered longitudinal axis of the base.
摘要翻译： 越野摩托车车架可以在垂直对准和垂直偏移位置之间选择性地调节，使得用户可以将各种摩托车驱动到车架上，将摩托车倾斜到顶板上并快速停放摩托车。 这种摩托车车架优选地包括基座，连接到基座的第一支撑构件和静态地附接到第一支撑构件的第二支撑构件，使得第二支撑构件能够接合现有摩托车的一部分。 以这种方式，第一支撑构件可以相对于基座的中心对准的纵向轴线在垂直对准和垂直偏移位置之间选择性地枢转。
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公开(公告)号：US5854575A
公开(公告)日：1998-12-29
申请号：US969100
申请日：1997-11-13
申请人： Alan S. Fiedler , Daniel J. Baxter
发明人： Alan S. Fiedler , Daniel J. Baxter
摘要： An integrated circuit phase-locked loop includes a phase/frequency detector, a charge pump, and a voltage-controlled oscillator (VCO) which are coupled together in series. The VCO has first and second VCO control inputs, and has a VCO output which is coupled to the phase/frequency detector. An off-chip loop filter input is coupled between the charge pump and the first VCO control input for coupling to an off-chip loop filter. An on-chip loop filter is coupled between the first VCO control input and the second VCO control input. The VCO has a lower voltage-to-frequency gain from the first VCO control input to the VCO output than from the second VCO control input to the VCO output.
摘要翻译： 集成电路锁相环包括串联耦合在一起的相/频检波器，电荷泵和压控振荡器（VCO）。 VCO具有第一和第二VCO控制输入，并且具有耦合到相位/频率检测器的VCO输出。 片外环路滤波器输入耦合在电荷泵和第一VCO控制输入端之间，用于耦合到片外环路滤波器。 片上环路滤波器耦合在第一VCO控制输入端和第二VCO控制输入端之间。 VCO从第一个VCO控制输入到VCO输出的电压 - 频率增益较低，而不是从VCO输出的第二个VCO控制输入。
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9.发明授权Flexible VLSI on-chip maintenance and test system with unit I/O cell design 失效灵活的VLSI片上维护和测试系统，具有单元I / O单元设计
公开(公告)号：US4912709A
公开(公告)日：1990-03-27
申请号：US112920
申请日：1987-10-23
申请人： Judy L. Teske , Daniel J. Baxter , Don A. Daane , Brian D. Borchers , David H. Allen , Michael F. Maas
发明人： Judy L. Teske , Daniel J. Baxter , Don A. Daane , Brian D. Borchers , David H. Allen , Michael F. Maas
IPC分类号： G01R31/28 , G01R31/3185 , G06F1/04 , H01L21/66 , H01L21/82 , H01L21/822 , H01L27/04
CPC分类号： G01R31/318538
摘要： This application describes a peripheral cell structure for VLSI chips that requires the use of standard cells having both input and output capability connected to nearly all of the signal carrying pins. The cells function is alterable (to input or output and to where the data input signals originate) by control signals which may originate with a control register. The clock input signal is split into two independent signals to selectively disable the input or output registers, thus allowing the control register to be changed without affecting the contents of the other two registers. An early signal is also provided to prepare for mode changes.
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公开(公告)号：US4860288A
公开(公告)日：1989-08-22
申请号：US112916
申请日：1987-10-23
IPC分类号： G01R31/28 , G01R31/3185 , G06F1/04 , H01L21/66 , H01L21/82 , H01L21/822 , H01L27/04
CPC分类号： G01R31/318552
摘要： This application teaches that more accurate measurements of clock skew can be had by providing a clock monitor pin directly connected to the clock bus internal to the VLSI chip.
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