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    31.
    发明专利
    未知

    公开(公告)号：DE69633063T2

    公开(公告)日：2005-09-01

    申请号：DE69633063

    申请日：1996-10-18

    Applicant: ASPECT MEDICAL SYSTEMS INC

    Inventor： DEVLIN H ,  CHAMOUN G ,  SHAMBROOM R ,  BRUCKNER E ,  MARCUS A

    IPC: A61B5/274 ,  A61B5/308 ,  A61B18/14 ,  H01R29/00 ,  A61B5/0428 ,  A61B5/0416 ,  A61B5/0478

    Abstract: Disclosed is a physiological electrical signal connector system which one connector connected to an electrode set and another connector connected to a digital signal convertor which leads to a patient monitor. Each type of electrode set has a specific code identified with it and when connected to the digital signal convertor, the connector code is recognized by the digital signal convertor. The connector code is then relayed to the monitor which will self-configure based on the identified code.

    34.
    发明专利
    未知

    公开(公告)号：BR0308878A

    公开(公告)日：2005-01-04

    申请号：BR0308878

    申请日：2003-04-01

    Applicant: ASPECT MEDICAL SYSTEMS INC

    Inventor： DAHAN ALBERT ,  GREENWALD SCOTT D

    IPC: A61B5/024 ,  A61B5/0285 ,  A61B5/11 ,  A61B5/145 ,  A61B5/1455 ,  A61B5/16 ,  A61B5/352 ,  A61B5/366 ,  A61M5/00 ,  A61M16/01 ,  A61M21/02

    Abstract: A PTT monitoring system for measuring arousal and responses to stress or pain during sedation or anesthesia. includes ECG electrodes and a PPG probe connected to a computer via signal conditioning and digitizing hardware. Lead I is typically used as the ECG lead while the PPG probe is typically placed on a finger. The ECG and PPG waveforms are continuously analyzed to update and display a current estimate of the subject's PPT from heart to hand. For each cardiac cycle, fiducial points are identified to indicate the pulse onset time (via QRS detection in the ECG) and pulse arrival time (via the point of steepest ascent in the PPG). The onset and arrival times for each cardiac cycle are paired, and the time difference is the interval estimate for that beat. An artifact post-processor (e.g., trim-mean filtering) excludes unlikely intervals from entering the averaged, current estimate of PTT. Finally, the current PTT estimate is displayed numerically and the trend of PTT is updated every second. Clinicians may interpret the instantaneous PTT value directly or in context of its recent trend. If there is a rapid decrease in PTT much less than the predetermined baseline value when the patient should be unconscious and free of stress and pain, then supplemental analgesics are administered to bring PTT greater than or equal to such baseline value.

    35.
    发明专利
    未知

    公开(公告)号：BR0210833A

    公开(公告)日：2004-06-22

    申请号：BR0210833

    申请日：2002-07-03

    Applicant: ASPECT MEDICAL SYSTEMS INC

    Inventor： SHAMBROOM JOHN R ,  SMITH CHARLES P

    IPC: A61B5/308 ,  A61B5/276 ,  A61B5/05 ,  A61B5/0476

    Abstract: A system for measuring bioelectric impedance in real time, in the presence of interference and noise is disclosed. A small electric current is injected into a biopotential electrode system, and then the measurement is tested for contamination by electrical interference or other noise sources.

    37.
    发明专利
    未知

    公开(公告)号：AT247419T

    公开(公告)日：2003-09-15

    申请号：AT97952570

    申请日：1997-12-19

    Applicant: ASPECT MEDICAL SYSTEMS INC

    Inventor： GREENWALD SCOTT D ,  SMITH CHARLES P

    IPC: A61B5/0476

    Abstract: The disclosed filter removes cardiac artifacts from signals representative of a patient's cerebral activity. The filter preferably replaces portions of the signal including artifacts with temporally adjacent artifact free portions.

    System and method for enhancing and separating biopotential signals
    40.
    发明专利
    System and method for enhancing and separating biopotential signals 未知

    公开(公告)号：AU757564B2

    公开(公告)日：2003-02-27

    申请号：AU2341499

    申请日：1999-01-25

    Applicant: ASPECT MEDICAL SYSTEMS INC

    Inventor： GREENWALD SCOTT D ,  DEVLIN PHILIP H ,  SMITH CHARLES P

    IPC: A61B5/0476 ,  A61B5/0478 ,  A61B5/0496

    Abstract: Disclosed is an electrode array (i.e., "sensor") and a method for separating near and far-field signals. In one embodiment a horizontal array is used, and in an alternate embodiment a vertical array is used. The electrode array consists of two well-separated pairs of closely spaced electrodes (and a separate ground element). In a typical application of collecting a channel of EEG, "sensing" electrodes are placed in standard locations (e.g., R and Ctr) with a ground electrode placed elsewhere on the head. The voltage measured between the well-separated sensing electrodes is the far-field dominant (i.e., EEG-dominant) channel. Additional electrodes are placed near each of the two sensing electrodes. (The additional electrodes are immediately lateral to the existing electrodes in the horizontal array, and are immediately above the existing electrodes in the vertical array.) The voltages measured between the pairs of closely spaced electrodes are near-field dominant (i.e., EMG/EOG-dominant) channels. The EEG, EMG and EOG signals can be enhanced by uncoupling them by combining information from all channels. The sensor is connected to a monitor via a patient interface cable (PIC). The sensor contains additional circuitry at the connection site that is used by the monitor to identify the presence and type of sensor, and to configure the monitor to invoke the appropriate software that will apply the method of the current invention to collect and uncouple the EEG, EMG and EOG.

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