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    • 37. 发明申请
    • METHOD AND APPARATUS FOR REMOVING BASELINE WANDER FROM AN ECG SIGNAL
    • 从ECG信号中去除基线WANDER的方法和设备
    • WO2007044125A3
    • 2007-06-21
    • PCT/US2006032084
    • 2006-08-16
    • WELCH ALLYN INCHOLLAND ALEXANDER
    • HOLLAND ALEXANDER
    • A61B5/04
    • A61B5/04017G06K9/00503
    • According to one aspect of the invention, an improved ECG monitor includes a plurality of electrodes to be affixed to a patient's body to pick up ECG signals in an ECG signal band. The electrodes are electrically coupled to a plurality of input amplifiers. At least one analog to digital converter ("ADC") is electrically coupled to the input amplifiers to digitize the ECG signals. A digital baseline wander filter has an internal finite impulse response ("FIR") low pass filter characterized by a substantially trapezoidal impulse response. The baseline wander filter substantially removes a baseline wander signal component having a range of frequency components below the ECG signal band. The ECG waveform output signal is a baseline filtered ECG waveform representing the one or more of the ECG signals. The ECG waveform output signal from the improved ECG monitor is delayed less than 2 seconds from the ECG signals.
    • 根据本发明的一个方面,一种改进的ECG监视器包括多个电极,所述多个电极被附加到患者的身体上以拾取ECG信号带中的ECG信号。 电极电耦合到多个输入放大器。 至少一个模数转换器(“ADC”)电耦合到输入放大器以数字化ECG信号。 数字基线漂移滤波器具有以基本上梯形的脉冲响应为特征的内部有限脉冲响应(“FIR”)低通滤波器。 基线漂移滤波器基本去除具有低于ECG信号频带的频率分量范围的基线漂移信号分量。 ECG波形输出信号是代表一个或多个ECG信号的基线滤波ECG波形。 来自改进的ECG监控器的ECG波形输出信号从ECG信号延迟少于2秒。
    • 38. 发明申请
    • BLOOD PRESSURE BLEED VALVE ASSEMBLY
    • 血压压力阀组件
    • WO2007033074A3
    • 2007-05-24
    • PCT/US2006035302
    • 2006-09-12
    • WELCH ALLYN INCKRAUTER ALLAN I
    • KRAUTER ALLAN I
    • A61B5/02F16K5/00F16K51/00
    • A61B5/0235
    • A bleed flow valve assembly for venting air from a blood pressure cuff at relatively constant pressure decrease rate irrespective of cuff size includes a multiple chamber bleed valve and a multiple position control valve operatively associated therewith. A first end chamber is connected in pneumatic communication with the cuff and pneumatically sealed from a second central chamber by a first flexible diaphragm. A third end chamber is separated from the central chamber by a second flexible diaphragm. A variable flow area opening through the second diaphragm provides a flow path for controllably venting air from the second chamber to ambient pressure when the control valve is selectively positioned to connect the third chamber in pneumatic communication with ambient pressure. Air is vented from the cuff through the first chamber in regulated response to the pressure differential between the first chamber and the second chamber acting upon the first flexible diaphragm.
    • 用于以相对恒定的压力降低速率从血压套管排出空气的排泄流量阀组件不管袖口尺寸如何,包括多室放气阀和与其可操作地相关联的多位置控制阀。 第一端室与袖带气动连通地连接并且通过第一柔性隔膜从第二中心室气密地密封。 第三端室通过第二柔性隔膜与中心室分离。 通过第二隔膜开口的可变流动面积提供了一个流动路径,用于当控制阀选择性地定位成将第三室与环境压力气动连通时,可控制地将空气从第二室排出到环境压力。 响应于第一腔室和第二腔室之间的作用在第一柔性膜片上的压力差,空气从袖带排出第一腔室。