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    Physiological waveform processor
    52.
    发明公开
    Physiological waveform processor 失效
    生理波形处理器

    公开(公告)号：EP0046643A3

    公开(公告)日：1982-03-17

    申请号：EP81303603

    申请日：1981-08-06

    Applicant: MEDTRONIC, INC.

    Inventor： Engle, William R. ,  Rockland, Ronald H.

    IPC: A61B05/04

    CPC classification number: A61B5/0456 ,  A61B5/7203 ,  A61B5/7239

    Abstract: Apparatus for processing waveform signals of physiological origin includes circuitry (18) for developing a signal representative of the peak-to-peak amplitude between each waveform signal peak and the next successive waveform signal peak as well as circuitry (21) for developing a signal representative of the slew rate of the waveform signal between successive waveform signal peaks. In a preferred embodiment, developed signals are stored in resettable memories, the memories being reset on the occurrence of a sign or polarity change in the slope of the waveform signal. Sampling circuitry is provided for establishing a maximum peak-to-peak amplitude within the waveform signal as well as its associated slew rate. Within the context of an ECG, the maximum peak-to-peak amplitude and associated slew rate represent the QRS complex and the apparatus of the present invention may be employed within a pacemaker as a sense amplifier. Alternatively, the apparatus of the present invention may be employed to determine whether or not a pacing lead is properly placed and the pacemaker is suitable for application to the patient.

    ECG apparatus
    53.
    发明公开
    ECG apparatus 失效
    心电图仪

    公开(公告)号：EP0280529A3

    公开(公告)日：1988-12-21

    申请号：EP88301582

    申请日：1988-02-24

    Applicant: Hewlett-Packard Company

    Inventor： Wang, Jyh-Yun ,  Shay, Mousa Noory

    IPC: A61B05/04

    CPC classification number: A61B5/0428

    Abstract: Apparatus for effectively eliminating pace pulses from an ECG wave without introducing distortion comprising means (8,10,14) for comparing the slope of the ECG wave with a threshold slope derived from the wave that is greater than the maximum slope produced in the wave by heart action alone and substituting (26) values for a portion of the wave between first and second points on either side of the place in the wave where its slope exceeds the threshold value, due to a pace pulse, noise or artifact, the substituted values being interpolations of the value of the ECG wave occurring at said points. In a preferred embodiment, means (22) are provided for preventing the substitution from occurring unless a pace pulse is detected within a given distance of the said place in the ECG wave and means (24) are also provided for setting said first point at a place in the ECG wave that occurs prior to a tail that precedes it.

    Electrode securement sheet
    56.
    发明公开
    Electrode securement sheet 失效
    电极固定片

    公开(公告)号：EP0189251A3

    公开(公告)日：1988-08-10

    申请号：EP86300106

    申请日：1986-01-08

    Applicant: FUKUDA DENSHI CO., LTD.

    Inventor： Inoue, Hirokatsu ,  Shimizu, Chuji

    IPC: A61B05/04

    CPC classification number: A61B5/0416 ,  A61B5/0408

    Abstract: An electrode securement sheet for securing to the skin surface M of a living body an electrode 7 held in close contact with the skin surface for deriving a weak current from the living body comprises: a substantially circular electrode securement section 1 which is to be secured to the skin surface M to cover the electrode 7; a lead securement section 2 which extends integrally from the electrode securement section 1 for securing to the skin surface a lead for leading the weak current extracted through the electrode to an electrocardiogram; and a lead securement piece 6 provided separately of the electrode securement section 1 and lead securement section 2, these sections being separably bonded to a cardboard.

    Abstract translation: 一种电极固定片，用于将与皮肤表面紧密接触并用于从生物体导出微弱电流的电极7固定到活体的皮肤表面M上，该电极固定片包括：大致圆形的电极固定部1， 皮肤表面M覆盖电极7; 引线固定部分2，其从电极固定部分1一体地延伸，用于将用于将通过电极提取的弱电流导向心电图的引线固定到皮肤表面; 以及与电极固定部1和引线固定部2分开设置的引线固定片6，这些部分可分离地结合到纸板上。

    Evoked potential autorefractometry system
    58.
    发明公开
    Evoked potential autorefractometry system 失效
    潜在的自动识别系统

    公开(公告)号：EP0199218A3

    公开(公告)日：1988-06-29

    申请号：EP86104990

    申请日：1986-04-11

    Applicant: WESTINGHOUSE ELECTRIC CORPORATION

    Inventor： Bernard, Thomas Edward ,  Roth, Emilie Matarasso ,  Mohan, Edwin Renner ,  Sherwin, Gary William ,  Zomp, John Michael

    IPC: A61B03/10 ,  A61B03/12 ,  A61B05/04

    CPC classification number: A61B5/6814 ,  A61B3/103 ,  A61B5/04085 ,  A61B5/0476 ,  A61B5/0484 ,  A61B2562/222

    Abstract: @ An evoked potential autorefractometry system includes a computer driving an alternating checkerboard mirror stimulus to project a stimulus pattern directly to a patient through a continuously variable focus lens controlled by the computer and maintaining a constant image size on the patient's retina. The evoked potentials produced by the patient are amplified and asynchronously filtered both in an analog and digital fashion to allow peak to peak detection of the evoked potentials to determine amplitude. The digital filter includes a 255 point running sum. The peak to peak amplitudes are asynchronously digitally filtered using a 16 point running sum to produce an amplitude measure of the evoked potentials. The lens is swept rapidly from one extreme of focus to the other extreme in relatively large steps to determine the area in which the peak amplitude occurs. The lens is then swept in smaller and smaller range sweeps using smaller and smaller steps around the peak amplitude until the peak in the amplitude is pinpointed within a desired diopter at which point the lens position is printed out on the printer as the patient's prescription.

    Signal conditioner for biological signals
    59.
    发明公开
    Signal conditioner for biological signals 失效
    生物信号信号调节器

    公开(公告)号：EP0147292A3

    公开(公告)日：1988-05-25

    申请号：EP84402583

    申请日：1984-12-13

    Applicant: OCG Technology, Inc.

    Inventor： Doherty, Richard F. ,  Pierry, Anthony

    IPC: A61B05/04 ,  G01R13/20 ,  H03G03/20

    CPC classification number: H03G3/20 ,  A61B5/04004 ,  G01R17/06

    Abstract: A signal conditioner (34) for use with cardiographic data and other biological signals includes a baseline shift circuit (42) and a variable gain amplifier (44). A feedback loop is provided for the output signal with a reference which designates the maximum value of the output signal. Within the baseline shifting circuit (42), there is provided circuitry which compares the amount of offset of the negative excursions of the waveform from a reference lead so as to introduce a feedback compensation signal which shifts the baseline and thereby compensates for drift in the baseline. Integration circuitry (50) in the form of counters of clock pulses are provided in the control of both amplifier gain and baseline shift. Timing circuitry (60) provides forthe interleaving of set-up intervals with data aquisition intervals, the gain adjustment and baseline adjustment being accomplished only during the set-up intervals. Sensing of temporal data by waveform analysis (58) is utilized for restarting the timing sequence (60) whenever the format of the sensed biological signal falls outside of the predetermined limits.

    Abstract translation: 用于心脏数据和其他生物信号的信号调节器包括基线移位电路和可变增益放大器。 为输出信号提供了一个反馈回路，该参考指定了输出信号的最大值。 在基线移位电路内，提供电路，其比较来自参考引线的波形的负偏移量的偏移量，以引入偏移基线的反馈补偿信号，从而补偿基线中的漂移。 在放大器增益和基线偏移两者的控制中提供了时钟脉冲计数器形式的积分电路。 定时电路提供了设置间隔与数据采集间隔的交错，增益调整和基线调整仅在设置间隔期间完成。 每当检测到的生物信号的格式超出预定限度时，通过波形分析对时间数据的感测被用于重新启动定时序列。

    Unit with a subcutaneous pick-up for continuously monitoring physiological cardiorespiratory variables
    60.
    发明公开
    Unit with a subcutaneous pick-up for continuously monitoring physiological cardiorespiratory variables 失效
    具有连续监测生理学心脏病变变量的独立采集单位

    公开(公告)号：EP0209804A3

    公开(公告)日：1987-06-16

    申请号：EP86109450

    申请日：1986-07-10

    Applicant: Rossi, Paolo

    Inventor： Rossi, Paolo

    IPC: A61B05/07 ,  A61B05/04 ,  A61B05/02

    CPC classification number: A61B5/0006 ,  A61B5/0031 ,  A61B5/03

    Abstract: Unit for continuously monitoring and detecting variations in physiological cardiorespiratory variables, such as electrocardiogram signals (ORS-T), heart rate, ventilation/minute (VE), breathing rate, systolic output (SO), cardiac output (CO) and arterial pressure (AP). The said unit comprises a first subcutaneous part (1) having means (6, 9, 12) for detecting first physiological parameters, such as the difference in potential between electrodes, transthoracic impedance and subcutaneous blood pressure, and means for handling first signals, depending on the said physiological parameters, and for transmitting them, by radio-frequency, to a second part (18) outside the body; the latter part having means for receiving the said physiological variables, which are then processed for detecting critical conditions and activating alarm means (35, 36).

    Abstract translation: 用于连续监测和检测心电图信号（QRS-T），心率，通气/分钟（VE），呼吸频率，收缩压（SO），心输出量（CO）和动脉压 AP）。 所述单元包括第一皮下部分（1），其具有用于检测第一生理参数的装置（6,9,12），例如电极之间的电位差，经胸阻抗和皮下血压，以及用于处理第一信号的装置，依赖 在所述生理参数上，并通过射频将它们发送到身体外部的第二部分（18）; 后一部分具有用于接收所述生理变量的装置，然后将其处理用于检测关键条件并激活报警装置（35,36）。

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