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    APPAREIL DE MESURE ET DE TRAITEMENT DE SIGNAUX PHYSIOLOGIQUES ET PROCEDE AUTOMATIQUE MIS EN UVRE PAR LEDIT APPAREIL
    81.
    发明公开
    APPAREIL DE MESURE ET DE TRAITEMENT DE SIGNAUX PHYSIOLOGIQUES ET PROCEDE AUTOMATIQUE MIS EN UVRE PAR LEDIT APPAREIL 失效
    设备和方法测量和处理生理信号

    公开(公告)号：EP0710086A1

    公开(公告)日：1996-05-08

    申请号：EP94922303.0

    申请日：1994-07-25

    申请人： Bour, Jean ,  Bour, Frank

    发明人： BOUR, Jean ,  BOUR, Frank ,  SCHANG, Daniel ,  NOTTON, Philippe

    IPC分类号： A61B5 ,  G06F17 ,  G06F19

    CPC分类号： A61B5/0535 ,  A61B5/7232 ,  A61B5/7239

    摘要： An apparatus for measuring and processing physiological signals and an automatic method therefor are disclosed. The preferably portable apparatus is characterised in that it mainly consists of devices for continuously acquiring (3, 3'), shaping (4, 4') and digitising (5) at least one electrocardiographic signal and a signal representative of changes in the impedance of a predetermined volume (V) in the body (6) of a patient, as well as a digital preprocessing unit (7) interacting with a controller (8), a display (9) and a removable device (10) for storing digitised signals or values derived from significant parameters. The apparatus further consists of a central digital processing device (12) for collecting and storing successive transfers of data from the storage device (10), and comparing said data.

    METHOD AND APPARATUS FOR MEASURING FLOW USING FREQUENCY-DISPERSIVE TECHNIQUES
    82.
    发明公开
    METHOD AND APPARATUS FOR MEASURING FLOW USING FREQUENCY-DISPERSIVE TECHNIQUES 失效
    方法和装置用于测量使用频技术的FLOW

    公开(公告)号：EP0701413A1

    公开(公告)日：1996-03-20

    申请号：EP94919305.0

    申请日：1994-05-31

    申请人： BAXTER INTERNATIONAL INC.

    发明人： DIXON, Robert, C. ,  LAPP, Theodore, R. ,  BOBO, Donald, E., Jr.

    IPC分类号： A61B5

    CPC分类号： A61B5/028 ,  A61B5/7232 ,  A61B5/7257

    摘要： A system for measuring fluid flwo within a conduit (10), such as blood flow from the heart, includes a heating element (12) that is driven so as to apply heat to the fluid at an upstream position as a series of periodic heat signal. A temperature sensor (14) located downstream measures a local temperature of the fluid and generates an electrical fluid temperature signal corresponding to the local temperature. This signal is then applied to a dispersive filter (22), which outputs a pulse-like signal in the presence of each periodic heat signal. Fluid flow is then calculated by a processor (18) as a function of the area under an estimated impulse response curve for the channel in which the fluid flows. Each periodic heat signal is preferably sinusoidal and has an instantaneous frequency that varies substantially continuously between a first frequency and a second frequency over a predetermined active input signal period. In a preferred embodiment, the frequency varies linearly between a first and a second frequency over a predetermined time period. The output signal from the filter (22), which is itself an estimate of the channel impulse response, is preferably integrated in order to provide a parameter estimate that is inversely proportional to flow. The corresponding method of measuring fluid flow using a frequency-swept input heat signal and matched dispersive filtering is included.

    Signal averaging of cardiac electrical signals using temporal data compression and scanning correlation
    84.
    发明公开
    Signal averaging of cardiac electrical signals using temporal data compression and scanning correlation 失效
    使用时间数据压缩和扫描相关来信号平均心脏电信号

    公开(公告)号：EP0526973A3

    公开(公告)日：1994-02-23

    申请号：EP92305251.8

    申请日：1992-06-08

    申请人： TELECTRONICS N.V.

    发明人： Steinhaus, Bruce M. ,  Wells, Randy T.

    IPC分类号： G06F15/20

    CPC分类号： A61B5/04525 ,  A61B5/0428 ,  A61B5/7232

    摘要： A method and apparatus for aligning periodic cardiac signal waveforms for the purpose of signal averaging over a number of cardiac cycles. The aligning method and apparatus sense cardiac electrical signals over a number of cardiac cycles, store a template characterizing these signals, reduce the data rate of the same sensed signals by temporal data compression, and store a compressed template sequence. Subsequently, the method and apparatus perform signal averaging by monitoring cardiac electrical signals, storing samples of these signals, temporally compressing these samples and scan correlating the compressed samples with the previously stored compressed template sequence to derive correlation coefficients. Thereafter, the method and apparatus utilize the maximum correlation coefficient to roughly align the monitored waveform with the averaged signal, and then they scan correlate a portion of the noncompressed monitored waveform adjacent to the maximum correlation coefficient with a corresponding portion of the noncompressed template to provide precise alignment of the monitored waveform with the averaged signal.

    摘要翻译： 一种用于对齐周期性心脏信号波形的方法和装置，用于在多个心动周期内进行信号平均。 对准方法和装置在多个心动周期内感测心脏电信号，存储表征这些信号的模板，通过时间数据压缩来降低相同感测信号的数据速率，并存储压缩的模板序列。 随后，该方法和设备通过监测心电信号，存储这些信号的采样，对这些采样进行时间压缩以及将压缩采样与先前存储的压缩模板序列进行扫描相关以导出相关系数来执行信号平均。 此后，该方法和设备利用最大相关系数将监测波形与平均信号大致对准，然后它们扫描将与最大相关系数相邻的非压缩监测波形的一部分与非压缩模板的相应部分相关以提供 监测波形与平均信号的精确对准。

    Physiological signals processing system
    87.
    发明公开
    Physiological signals processing system 失效
    生理信号处理系统

    公开(公告)号：EP0129981A3

    公开(公告)日：1987-01-14

    申请号：EP84303460

    申请日：1984-05-22

    申请人： KABUSHIKI KAISYA ADVANCE KAIHATSU KENKYUJO

    发明人： Imai, Hideki Yokohama Park Town ,  Sasaki, Minoru

    IPC分类号： G06F15/20

    CPC分类号： A61B5/0452 ,  A61B5/7232

    摘要： In a physiological signals processing system including (a) a A/D conversion means for converting physiological signals into digital signals and (b) a data compression means for reducing the number of data points sampled from said digital signals, the improvement which comprises: said data compression means being provided with a first sampling means for sampling a pair of combined peak points from said digital signals by applying the second order differential conversion to said digital signals, and a second sampling means for sampling level points by the level detection of said digital signals in the portion where adjacent peak points are not combined.

    Recording system for time-compressed ECG waveforms
    88.
    发明公开
    Recording system for time-compressed ECG waveforms 失效
    对于打褶时间的ECG信号的记录装置。

    公开(公告)号：EP0149094A2

    公开(公告)日：1985-07-24

    申请号：EP84114675.6

    申请日：1984-12-04

    申请人： International Business Machines Corporation

    发明人： Curtis, Huntington Woodman ,  Dodge, Frederick Arthur ,  Feancis, David Bruce ,  Mizzi, John Vincent

    IPC分类号： G01D1/12 ,  G01D9/02 ,  A61B5/04

    CPC分类号： A61B5/0432 ,  A61B5/7232

    摘要： A method of printing an analog waveform having a time variable, such as an ECG by first converting the analog waveform into a time sequence of digitally expressed values, forming predetermined groups of digital data and then determining maximum and minimum amplitude values of the digital data within the groups. These values are stored in a line buffer memory. A recording medium advances past a transversely oriented a linear array of discrete recording elements, such as linear array dot printhead. The serial stored values are read out in parallel to each of the recording elements, with the elements actuated in parallel by the stored values at an initial time and for time durations for each element that is a function of the stored maximum and minimum amplitude values for that element. The waveform is recorded as a series of appropriately placed short parallel longitudinal lines to form in aggregate a transverse waveform display on the recording medium.