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.

公开(公告)号：DE69924567T2

公开(公告)日：2006-02-16

申请号：DE69924567

申请日：1999-01-25

Applicant: ASPECT MEDICAL SYSTEMS INC

Inventor： GREENWALD D ,  DEVLIN H ,  SMITH 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.

公开(公告)号：DE69923680T2

公开(公告)日：2006-03-23

申请号：DE69923680

申请日：1999-06-18

Applicant: ASPECT MEDICAL SYSTEMS INC

Inventor： CORDERO M ,  DEVLIN H

IPC: A61B5/274

Abstract: An electrophysiological electrode includes multiple layers of materials to isolate liquid electrolytic gels from the conductive inks on the flexible circuit of the electrode substrate. Such an electrode has a much longer shelf life under normal storage conditions than other electrodes of such construction with high salt content liquid electrolytic gel, and is able to maintain acceptable impedance upon its eventual use.

公开(公告)号：DE69732790T2

公开(公告)日：2006-04-06

申请号：DE69732790

申请日：1997-10-10

Applicant: ASPECT MEDICAL SYSTEMS INC

Inventor： DEVLIN H ,  CORDERO M ,  CHAMOUN B ,  SHAMBROOM R ,  FENDROCK CHARLES ,  MCDANIEL L

IPC: A61B5/296 ,  A61B5/308

Abstract: An array of electrodes is constructed to allow the user to easily adjust to the correct size of the patient's head. The array is self-adhesive, pre-gelled and disposable. The array fits easily over the temple and forehead areas where EEG signals can be acquired by specially designed monitors for purposes of monitoring a number of bodily phenomena, including but not limited to, depth of anesthesia, and/or ischemia, and burst suppression. The array is connected to the monitor via a tab connector that is integral to the disposable device. The tab connector is insertible into a reusable connector that is part of a monitoring system.

公开(公告)号：DE69924567D1

公开(公告)日：2005-05-12

申请号：DE69924567

申请日：1999-01-25

Applicant: ASPECT MEDICAL SYSTEMS INC

Inventor： GREENWALD D ,  DEVLIN H ,  SMITH 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.

公开(公告)号：DE69732790D1

公开(公告)日：2005-04-21

申请号：DE69732790

申请日：1997-10-10

Applicant: ASPECT MEDICAL SYSTEMS INC

Inventor： DEVLIN H ,  CORDERO M ,  CHAMOUN B ,  SHAMBROOM R ,  FENDROCK CHARLES ,  MCDANIEL L

IPC: A61B5/296 ,  A61B5/308 ,  A61B5/0408 ,  A61B5/0428

Abstract: An array of electrodes is constructed to allow the user to easily adjust to the correct size of the patient's head. The array is self-adhesive, pre-gelled and disposable. The array fits easily over the temple and forehead areas where EEG signals can be acquired by specially designed monitors for purposes of monitoring a number of bodily phenomena, including but not limited to, depth of anesthesia, and/or ischemia, and burst suppression. The array is connected to the monitor via a tab connector that is integral to the disposable device. The tab connector is insertible into a reusable connector that is part of a monitoring system.

公开(公告)号：DE69923680D1

公开(公告)日：2005-03-17

申请号：DE69923680

申请日：1999-06-18

Applicant: ASPECT MEDICAL SYSTEMS INC

Inventor： CORDERO M ,  DEVLIN H

IPC: A61B5/274 ,  A61B5/0408

Abstract: An electrophysiological electrode includes multiple layers of materials to isolate liquid electrolytic gels from the conductive inks on the flexible circuit of the electrode substrate. Such an electrode has a much longer shelf life under normal storage conditions than other electrodes of such construction with high salt content liquid electrolytic gel, and is able to maintain acceptable impedance upon its eventual use.

公开(公告)号：DE69633063D1

公开(公告)日：2004-09-09

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.

公开(公告)号：DE69904836T2

公开(公告)日：2003-11-13

申请号：DE69904836

申请日：1999-08-04

Applicant: ASPECT MEDICAL SYSTEMS INC

Inventor： CHAMOUN G ,  DEVLIN H

IPC: A61B5/0452 ,  A61B5/0476 ,  A61B5/0488 ,  A61B10/00 ,  G06F17/14 ,  G06F17/00 ,  A61B5/00

Abstract: Disclosed is a system and method for providing information to the user of a medical monitoring or diagnostic device to aid in the clinical decision making process. The preferred embodiment uses two estimators or predictors of the same physiological quantity, with each of the estimators being designed to detect specific states or artifacts in the estimated parameter and thus operating at a different point on its respective ROC curve; one chosen to provide high sensitivity, the other chosen to provide high specificity. The divergence between the estimators is indicated by the use of a shaded region between their respective time trends. The use of 2 estimators of the same parameters with different performance characteristics allows the system and method of the present invention to derive additional information about the underlying physiologic process over and above that which would be available from a single estimator. The system and method of the present invention can derive information from not only the instantaneous values of the estimators and the difference between them, but also from the time trend of the difference.

公开(公告)号：DE69904836D1

公开(公告)日：2003-02-13

申请号：DE69904836

申请日：1999-08-04

Applicant: ASPECT MEDICAL SYSTEMS INC

Inventor： CHAMOUN G ,  DEVLIN H

IPC: A61B5/0452 ,  A61B5/0476 ,  A61B5/0488 ,  A61B10/00 ,  G06F17/14 ,  G06F17/00 ,  A61B5/00

Abstract: Disclosed is a system and method for providing information to the user of a medical monitoring or diagnostic device to aid in the clinical decision making process. The preferred embodiment uses two estimators or predictors of the same physiological quantity, with each of the estimators being designed to detect specific states or artifacts in the estimated parameter and thus operating at a different point on its respective ROC curve; one chosen to provide high sensitivity, the other chosen to provide high specificity. The divergence between the estimators is indicated by the use of a shaded region between their respective time trends. The use of 2 estimators of the same parameters with different performance characteristics allows the system and method of the present invention to derive additional information about the underlying physiologic process over and above that which would be available from a single estimator. The system and method of the present invention can derive information from not only the instantaneous values of the estimators and the difference between them, but also from the time trend of the difference.