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    • 2. 发明授权
    • Thermometric vapor sensor with evaporation surface having micropores
    • 具有蒸发表面的微孔蒸气传感器具有微孔
    • US06202480B1
    • 2001-03-20
    • US09054852
    • 1998-04-02
    • Ganapati R. MauzeMichael GreensteinPaul LumHewlett E. Melton, Jr.
    • Ganapati R. MauzeMichael GreensteinPaul LumHewlett E. Melton, Jr.
    • G01N2562
    • G01N25/64
    • A sensor for sensing in a gas stream a vapor of a liquid. The sensor includes a micropore and a wet temperature sensor. The micropore has an evaporation end and has a lumen to conduct liquid from a supply of the liquid for evaporation at the evaporation end. The wet temperature sensor has a heat sensitive part in contact with the liquid in the micropore. The heat sensitive part circumscribes the micropore and forms part of the lumen. Heat loss due to evaporation of the liquid when the wet temperature sensor wet with the liquid is placed in the gas stream will result in the temperature sensed by the wet temperature sensor being lower than the non-evaporative temperature of the gas stream. This lowering in temperature can be measured to determine the concentration of the vapor in the gas stream. An example of such a sensor has a thermocouple junction having micropores passing through the thermocouple junction.
    • 一种传感器,用于在气流中检测液体的蒸汽。 该传感器包括微孔和湿温度传感器。 微孔具有蒸发端,并且具有内腔以在蒸发端从用于蒸发的液体供应源输送液体。 湿式温度传感器具有与微孔中的液体接触的热敏部分。 热敏部分围绕微孔并形成管腔的一部分。 将潮湿的温度传感器用液体湿润时液体的蒸发导致的热损失被放置在气流中将导致由湿式温度传感器感测到的温度低于气流的非蒸发温度。 可以测量这种温度降低以确定气流中的蒸气的浓度。 这种传感器的示例具有热电偶结,其具有穿过热电偶结的微孔。
    • 3. 发明授权
    • Telemedicine patient platform
    • 远程医疗病人平台
    • US6038465A
    • 2000-03-14
    • US170542
    • 1998-10-13
    • Hewlett E. Melton, Jr.
    • Hewlett E. Melton, Jr.
    • A61B5/107A61B5/117A61B8/08G01G19/50G01S7/539G01S15/02G01S15/88G06F19/00G06K9/00G07D7/00A61B10/00G06F17/00G01G19/40
    • G06K9/00362A61B5/107A61B5/117A61B8/0858G01G19/50G01G23/3728G01S15/88G01S7/539G06F19/3406G06F19/3418G01S15/025Y10S128/92Y10S128/922
    • A system and a method for remote monitoring of a designated user utilize an integrated scale that is able to measure the body weight of a current user and determine whether the current user is the designated user. The identification of the current user is accomplished by measuring a preselected length of the current user by reflecting sound waves at location(s) that defines the preselected length and comparing the measured length to a corresponding length of the designated user that is stored in the integrated scale. When the current user is identified as the designated user, the integrated scale transmits the measured body weight to a remote monitoring device. The preselected length may be the distance from the bottom of a foot to the knee joint. Alternatively, the preselected length may be the length of a tibia or femur, or the skeletal height. The integrated scale may include devices to measure the heart rate and the respiratory rate of the current user by transmitting sounds waves and recording reflected sound waves from the chest cavity and the heart chambers.
    • 用于远程监控指定用户的系统和方法利用能够测量当前用户的体重并且确定当前用户是否是指定用户的综合量表。 当前用户的识别是通过在定义预选长度的位置处反射声波来测量当前用户的预选长度并将测量长度与存储在集成中的指定用户的对应长度进行比较来实现的 规模。 当当前用户被识别为指定用户时,综合比例将测量的体重发送到远程监控设备。 预选长度可以是从脚的底部到膝关节的距离。 或者,预选长度可以是胫骨或股骨的长度或骨骼高度。 综合规模可以包括通过发射声波并记录来自胸腔和心室的反射声波来测量当前用户的心率和呼吸频率的装置。
    • 4. 发明授权
    • Ultrasonic frequency-domain system and method for sensing fluid flow
    • 超声频域系统和感应流体流的方法
    • US5375600A
    • 1994-12-27
    • US104309
    • 1993-08-09
    • Hewlett E. Melton, Jr.King-Wah W. YeungMichael Greenstein
    • Hewlett E. Melton, Jr.King-Wah W. YeungMichael Greenstein
    • A61B8/06G01P5/00G01P13/00G01S15/58
    • G01S15/8984A61B8/06A61B8/488G01S15/582
    • Pulses of ultrasound are focused in the patient's body to create an interrogation volume where a characteristic of blood flow is to be measured. The bandwidth of the back-scattered Doppler return signal is measured. In order to measure flow velocity independent of direction, the interrogation volume is generated substantially as a sphere in which the range dimension is set equal to the lateral dimensions (azimuth and elevation) of the interrogation signal. The Doppler bandwidth is then scaled to provide a direction-independent measurement of flow velocity. In order to determine the direction of flow, the interrogation volume is generated substantially as an ellipsoid. The long axis of the ellipsoidal interrogation volume is then rotated until the measured Doppler bandwidth is at a minimum, which is reached when the long axis is aligned with the flow direction. The interrogation volume is preferably rotated and translated using differential phasing of the ultrasonic signals from different transducer elements in a two-dimensional array.
    • 超声波的脉冲聚焦在患者的身体中以产生要测量血流特征的询问体积。 测量背散射多普勒返回信号的带宽。 为了独立于方向测量流速,询问体积基本上产生为范围尺寸设置为等于询问信号的横向尺寸(方位角和仰角)的球体。 然后缩放多普勒带宽以提供流速独立的方向测量。 为了确定流动的方向,询问体积基本上产生为椭圆体。 然后旋转椭圆询问体积的长轴直到测量的多普勒带宽处于最小值,当长轴与流动方向对准时达到最小。 询问体积优选地以二维阵列使用来自不同换能器元件的超声波信号的微分相位来旋转和平移。
    • 10. 发明授权
    • Phase imaging and myocardial performance
    • 相位成像和心肌表现
    • US5415171A
    • 1995-05-16
    • US104308
    • 1993-08-09
    • Christiana GohHewlett E. Melton, Jr.
    • Christiana GohHewlett E. Melton, Jr.
    • A61B5/055A61B8/08A61B8/00
    • A61B8/08
    • A method and system for monitoring performance of a heart includes forming a time series of frames of echocardiographic data. The time series may be for a systolic interval, but longer intervals are also possible. The frames of the time series have sets of corresponding data points with respect to specific sites of a patient's heart. For each set of corresponding data points, a time domain signal as a function of a selected scalar is determined, thereby yielding a time domain signal which varies with frame-to-frame variations of the selected scalar. The scalar has a physiological significance to the contractile state or the motion of the myocardium. Mean squared speed, root mean squared speed, mean squared rate of signal change, integrated backscatter, correlation area, and echocardiographic signal data magnitude are suitable scalars. For each time domain signal, a phase angle is obtained to assign a pixel value to an image data point. The pixel values are utilized to generate either a gray-scale two-dimensional image or a time series of cardiac performance.
    • 用于监测心脏性能的方法和系统包括形成超声心动图数据的时间序列。 时间序列可以是收缩期间隔,但是更长的间隔也是可能的。 时间序列的帧具有相对于患者心脏的特定部位的相应数据点的集合。 对于每组对应的数据点,确定作为所选标量的函数的时域信号,从而产生随所选标量的帧到帧变化而变化的时域信号。 标量对收缩状态或心肌的运动具有生理意义。 均方速度,均方根速度,信号变化的均方率,积分反向散射,相关面积和超声心动图信号数据幅度是适合的标量。 对于每个时域信号,获得相位角以将像素值分配给图像数据点。 像素值用于生成灰度二维图像或心脏性能的时间序列。