Surface wave distributed actuator systems
    1.
    发明授权
    Surface wave distributed actuator systems 失效
    表面波分布式执行器系统

    公开(公告)号:US5953773A

    公开(公告)日:1999-09-21

    申请号:US35235

    申请日:1998-03-05

    摘要: An apparatus for positioning a human subject on a surface and for transferring a subject from one surface to another. The subject is situated on the top surface of a fluid enclosure and an actuator mechanism causes local deformations of the top surface in such a manner as to create traveling waves whereby a force tangential to the top surface is exerted on the subject for moving the subject with respect to the surface. The actuator mechanism may be a motor driver and may be a plurality of linear actuators configured so as to cause local deformations of the top surface in a direction having a vertical and/or horizontal component. The linear actuators may be shape memory fibers.

    摘要翻译: 一种用于将人类对象定位在表面上并用于将受试者从一个表面转移到另一个表面的装置。 受试者位于流体外壳的顶表面上,并且致动器机构以这样的方式引起顶表面的局部变形,以便产生行波,从而使与顶表面相切的力施加在受试者上,以使受试者与 尊重表面。 致动器机构可以是电机驱动器,并且可以是多个线性致动器,其被构造成使得顶表面在具有垂直和/或水平分量的方向上的局部变形。 线性致动器可以是形状记忆纤维。

    Reconfigurable footprint mechanism for omnidirectional vehicles
    3.
    发明授权
    Reconfigurable footprint mechanism for omnidirectional vehicles 失效
    全方位车辆可重构足迹机制

    公开(公告)号:US5927423A

    公开(公告)日:1999-07-27

    申请号:US35626

    申请日:1998-03-05

    摘要: A reconfigurable mechanism for varying the footprint of a wheeled omnidirectional vehicle. The variable footprint mechanism consists of a pair of beams intersecting at a pivotal point in the middle. Two pairs of ball wheels at the diagonal positions of the vehicle chassis are mounted, respectively, on the two beams intersecting in the middle. The angle between the two beams varies actively so that the ratio of the wheel base to the tread may change. Independent servomotors driving the ball wheels allow the vehicle to move in an arbitrary direction from an arbitrary configuration as well as to change the angle between the two beams and thereby change the footprint. By controlling the beam angle, static stability may be augmented, the width of the vehicle may be reduced, and the effective transmission ratio relating the vehicle speed to individual actuator speeds may be varied in a continuous manner.

    摘要翻译: 用于改变轮式全向车辆的占地面积的可重构机构。 可变占位面积机构由在中间的枢转点处相交的一对梁组成。 在车辆底盘对角位置的两对球轮分别安装在与中间相交的两个梁上。 两个梁之间的角度主动变化,使得轮基与胎面的比可能改变。 驱动球轮的独立伺服马达允许车辆从任意构型沿任意方向移动,并且改变两个梁之间的角度,从而改变占地面积。 通过控制光束角度,可以增加静态稳定性,可以减小车辆的宽度,并且可以连续地改变将车速与各个致动器速度相关联的有效传动比。

    Wearable pulse wave velocity blood pressure sensor and methods of calibration thereof
    4.
    发明授权
    Wearable pulse wave velocity blood pressure sensor and methods of calibration thereof 有权
    穿戴式脉搏波速度血压传感器及其校准方法

    公开(公告)号:US07674231B2

    公开(公告)日:2010-03-09

    申请号:US11840654

    申请日:2007-08-17

    IPC分类号: A61B5/02

    摘要: An apparatus and methods for performing a circulatory measurement on an extremity, such as a hand, of a subject. The circulatory measurement results in the derivation of an output circulatory metric that may encompass blood pressure or various other circulatory metrics. An indicator of an input circulatory metric at a locus on the extremity is measured, such as a pulse transit time, and calibrated to account for the hydrostatic component of blood pressure arising due to vertical displacement of the extremity with respect to the heart.

    摘要翻译: 用于对受试者的肢体(例如手)进行循环测量的装置和方法。 循环测量结果导出可包含血压或各种其他循环指标的输出循环指标。 测量在肢体上的轨迹上的输入循环度量的指标,例如脉冲传播时间,并且被校准以考虑由于肢体相对于心脏的垂直位移而产生的血压的静水分量。

    Estimating Aortic Blood Pressure from Non-Invasive Extremity Blood Pressure
    5.
    发明申请
    Estimating Aortic Blood Pressure from Non-Invasive Extremity Blood Pressure 审中-公开
    估计非侵入性血压的主动脉血压

    公开(公告)号:US20100016736A1

    公开(公告)日:2010-01-21

    申请号:US12501569

    申请日:2009-07-13

    IPC分类号: A61B5/021

    摘要: Methods and a computer program product for using a circulatory measurement on an extremity of a particular subject to derive an aortic blood pressure for that subject. A model is constructed that maps a peripheral cardiovascular waveform to a central cardiovascular waveform on the basis of a plurality of model parameters. A time record is obtained using a non-invasive blood pressure sensor disposed at a solitary position periphery of the cardiovascular system of a subject. The time record is then transformed to obtain a plurality of test central blood pressure waves, with a single test central blood pressure wave is based on each of a plurality of sets of values of the model parameters. An optimum set of values of the model parameters is then selected, based on a specified criterion applied to the plurality of test central blood pressure waves, so that the aortic circulatory waveform of the subject can be obtained.

    摘要翻译: 用于在特定受试者的肢体上使用循环测量的方法和计算机程序产品为该受试者导出主动脉血压。 构建了基于多个模型参数将周围心血管波形映射到中心心血管波形的模型。 使用设置在受试者的心血管系统的孤立位置周围的非侵入性血压传感器获得时间记录。 然后将时间记录转换以获得多个测试中心血压波,单个测试中心血压波基于模型参数的多组值中的每一个。 然后根据应用于多个测试中心血压波的规定标准来选择模型参数的最佳值,从而可以获得受试者的主动脉循环波形。

    Wearable blood pressure sensor and method of calibration
    6.
    发明授权
    Wearable blood pressure sensor and method of calibration 有权
    可佩戴的血压传感器和校准方法

    公开(公告)号:US07641614B2

    公开(公告)日:2010-01-05

    申请号:US11508123

    申请日:2006-08-22

    IPC分类号: A61B5/00

    摘要: Methods and apparatus for measuring arterial blood pressure at an extremity of a subject. Arterial blood pressure is derived from a circulatory measurement performed on an extremity of a subject and the circulatory measurement is normalized to account for the instantaneous vertical displacement of the extremity. The vertical displacement of the extremity relative to the heart of the subject is obtained using the angular orientation of the subject's extremity. An improved photoplethysmograph can discriminate light traversing the extremity from ambient light on the basis of differential response. The apparatus may have a conducting polymer actuator for applying pressure to the extremity of the subject. A pulsatile waveform from the photoplethysmographic signal may be obtained at a plurality of externally applied pressures to calibrate the photoplethysmograph.

    摘要翻译: 用于测量受试者末端动脉血压的方法和装置。 动脉血压来源于在受试者的肢体上进行的循环测量,循环测量被归一化以考虑肢体的瞬时垂直位移。 使用受试者肢体的角度取向获得肢体相对于受试者心脏的垂直位移。 改进的光电容积法可以根据差异响应来区分穿过末端的光与环境光。 该装置可以具有用于向受试者的末端施加压力的导电聚合物致动器。 可以在多个外部施加的压力下获得来自光电体积描记信号的脉动波形,以校准光谱体积描记器。

    Power-efficient communication protocol
    7.
    发明授权
    Power-efficient communication protocol 失效
    高效通信协议

    公开(公告)号:US06553535B1

    公开(公告)日:2003-04-22

    申请号:US09378411

    申请日:1999-08-20

    IPC分类号: G11C2900

    摘要: A method and apparatus for telemetering data on a channel having a maximum data rate by utilizing a power efficient communication protocol is provided. The data to be telemetered comprises a number of source symbols where each source symbol is characterized by a probability of occurrence. A sequence of signals forming codewords having an energy and a length is produced. The length for the codewords is based at least on the number of symbols to be coded. Each codeword signifies a specified source symbol on the basis of a mapping between source symbols and codewords. The mapping is such that each source symbol of lower probability of occurrence is associated with a codeword of at least equal energy.

    摘要翻译: 提供了一种用于通过利用功率有效的通信协议对具有最大数据速率的信道进行数据遥测的方法和装置。 要遥测的数据包括多个源符号,其中每个源符号的特征在于出现概率。 产生形成具有能量和长度的码字的信号序列。 码字的长度至少基于要编码的符号的数量。 每个码字基于源符号和码字之间的映射来表示指定的源符号。 映射使得发生概率较低的每个源符号与至少相等能量的码字相关联。

    Robot having obstacle avoidance mechanism
    8.
    发明申请
    Robot having obstacle avoidance mechanism 有权
    机器人避障机制

    公开(公告)号:US20120272505A1

    公开(公告)日:2012-11-01

    申请号:US13214143

    申请日:2011-08-19

    摘要: A robot is placed on a first surface of a panel. The robot includes a body and first and second feet connected to the body via joints. A flux conducting device is positioned on an opposing second surface of the panel, opposite the robot, so that each foot of the robot is magnetically coupled to the flux conducting device. The flux conducting device is moved along the exterior surface to pull the robot along the interior surface until an obstacle on the first surface is encountered. The robot decouples one of the feet from the flux conducting device, lifts the decoupled foot above the obstacle, and moves the decoupled foot past the obstacle.

    摘要翻译: 机器人被放置在面板的第一表面上。 机器人包括主体,第一和第二脚通过接头连接到身体。 助焊剂传导装置定位在与机器人相对的面板的相对的第二表面上,使得机器人的每个脚都与磁通传导装置磁耦合。 助焊剂传导装置沿着外表面移动以沿着内表面拉动机器人,直到遇到第一表面上的障碍物。 机器人将一个脚与通量传导装置分离,将解耦的脚提升到障碍物上方,并使解耦的脚移动通过障碍物。

    Cuffless continuous blood pressure monitor
    9.
    发明授权
    Cuffless continuous blood pressure monitor 有权
    无袖连续血压计

    公开(公告)号:US06413223B1

    公开(公告)日:2002-07-02

    申请号:US09585382

    申请日:2000-06-01

    IPC分类号: A61B502

    摘要: A device for noninvasive, continuous monitoring of arterial blood pressure for advanced cardiovascular diagnoses. Most of the current noninvasive, continuous blood pressure measurement devices are mechanically intrusive and, therefore, cannot be used for long-term ambulatory monitoring. This new approach requires only simple, noninvasive monitoring devices such as finger photoplethysmographs and an electrical impedance photoplethysmograph (EIP) to monitor the dynamic behavior of the arterial blood flow. In this approach, measured signals from these noninvasive sensors on an arterial segment are integrated to estimate the blood pressure in the segment based on a hemodynamic model. A mathematical model of the arterial blood flow is derived and transformed into a state-space representation. In the modeling, a precise hemodynamic model for the arterial segment on which sensors are located is derived, and combined with relatively simplified models of the upstream and the downstream arterial flows to represent an entire arterial stream. Then, a Kalman filter is designed based on the model and it is shown that the internal variables such as the arterial blood pressure in the arterial segment can be estimated based on the measurements, even though the observability condition of the system may not be met. Simulation results indicate that the approach can generate an accurate estimation of the arterial blood pressure in real-time even from noisy sensor signals.

    摘要翻译: 用于无创,连续监测动脉血压用于晚期心血管诊断的装置。 目前大多数无创连续血压测量装置是机械性的,因此不能用于长期的动态监测。 这种新方法仅需要简单的无创监测装置,例如手指光电容积法和电阻抗光电容积法(EIP)来监测动脉血流的动态行为。 在这种方法中,来自这些无创传感器在动脉段上的测量信号被整合以基于血液动力学模型估计段中的血压。 导出动脉血流的数学模型,并将其转化为状态空间表示。 在建模中,导出了传感器位于其上的动脉段的精确血液动力学模型,并与上游和下游动脉血流的相对简化的模型结合以代表整个动脉血流。 然后,基于该模型设计卡尔曼滤波器,并且显示内部变量例如动脉段中的动脉血压可以基于测量来估计,即使可能不能满足系统的可观察性状况。 模拟结果表明,该方法即使从噪声传感器信号中也可实时产生动态血压的准确估计。

    Isolating ring sensor design
    10.
    发明授权
    Isolating ring sensor design 失效
    隔离环传感器设计

    公开(公告)号:US06402690B1

    公开(公告)日:2002-06-11

    申请号:US09552185

    申请日:2000-04-18

    IPC分类号: A61B500

    摘要: A monitoring system for monitoring the health status of a patient by performing measurements such as skin temperature, blood flow, blood constituent concentration, and pulse rate at the finger of the patient. The monitoring system has an inner ring proximate to the finger as well as an outer ring, mechanically decoupled from the inner ring, that shields the inner ring from external loads. Measurements are performed in accordance with a protocol that may be preprogrammed, or may be modified on the basis of real-time data or by command from a remotely located medical professional.

    摘要翻译: 一种监测系统,用于通过执行诸如皮肤温度,血流量,血液成分浓度和患者手指处的脉搏率的测量来监测患者的健康状况。 监控系统具有靠近手指的内环以及与内圈机械分离的外环,其将内环屏蔽外部负载。 测量根据可以被预编程的协议执行,或者可以基于实时数据或来自远程医疗专业人员的命令进行修改。