公开(公告)号：AU5370294A

公开(公告)日：1994-05-09

申请号：AU5370294

申请日：1993-10-13

Applicant: ASPECT MEDICAL SYSTEMS INC

Inventor： SHAMBROOM JOHN R

IPC: A61B5/00 ,  A61B5/0476 ,  G06F17/00 ,  G06F19/00 ,  A61B5/04

Abstract: An EEG monitor utilizes a portable acquisition module (14) and a substantially stationary processing module (12). The EEG signals are acquired and converted to an oversampled stream of digital signals by a sigma-delta modulator (64) located in the data acquisition module. The signals are then filtered by a decimation filter (62) located in the processing module. Additional means are also provided to monitor the electrode leads to detect when the leads become unplugged. The monitor provides all power to the data acquisition module over a single twisted line (82) which transmits data as well.

公开(公告)号：CA2146979A1

公开(公告)日：1994-04-28

申请号：CA2146979

申请日：1993-10-13

Applicant: ASPECT MEDICAL SYSTEMS INC

Inventor： SHAMBROOM JOHN R

IPC: A61B5/00 ,  A61B5/0476 ,  G06F17/00 ,  G06F19/00 ,  A61B5/04

Abstract: An EEG monitor utilizes a portable acquisition module (14) and a substantially stationary processing module (12). The EEG signals are acquired and converted to an oversampled stream of digital signals by a sigma-delta modulator (64) located in the data acquisition module. The signals are then filtered by a decimation filter (62) located in the processing module. Additional means are also provided to monitor the electrode leads to detect when the leads become unplugged. The monitor provides all power to the data acquisition module over a single twisted line which transmits data as well.

公开(公告)号：CA2434275A1

公开(公告)日：1993-04-29

申请号：CA2434275

申请日：1992-10-23

Applicant: ASPECT MEDICAL SYSTEMS INC

Inventor： CHAMOUN NASSIB G ,  MEAD PETER A ,  CHIANG HSING-HSING ,  SAINI VIKAS

IPC: A61B5/16 ,  A61B5/374 ,  G06F17/00 ,  G06F19/00 ,  A61B5/0476

Abstract: A method of generating a diagnostic index for quantifying the presence or absence of a phenomena which is represented by spectral values generated from acquired electrical signals of the phenomena, comprises the steps of: sorting said spectral values into predetermined bins of ranges of spectral values; summing all of the spectral values in each bin; multiplying the sum of spectral values in each bin by a predetermined coefficient to obtain a bin product; summing said bin products to obtain a diagnostic index which represents a degree of presence or absence of said phenomena.

公开(公告)号：CA2064791A1

公开(公告)日：1991-02-23

申请号：CA2064791

申请日：1990-03-13

Applicant: ASPECT MEDICAL SYSTEMS INC

Inventor： CHAMOUN NASSIB G

IPC: A61B5/0452 ,  A61B10/00 ,  G06F17/00

Abstract: Disclosed is a cardiac biopotential analysis system and method for detecting and quantifying in a noninvasive manner nonlinear dynamic patterns of depolarization and repolarization on a beat to beat basis in real time using bispectral analysis. A suitable body surface electrode acquires the signal from a region of interest. The signal is then amplified, digitized, and transmitted to a host microcomputer where an arrhythmia-free QRST complex is chosen interactively. Using standard cross-correlation methods a suitable number of complexes are extracted from the record. The extracted complexes are used to compute bispectral parameters using a frequency domain or a parametric based approach. A reference clinical database is used to identify frequency pairs most sensitive to particular interventions or diagnostic states of interest. The values at these frequency pairs are then extracted from the patient's bispectral arrays. The ensemble of values for the particular diagnostic determination under consideration is used to compute a single value index which serves as the diagnostic criterion by which the patient's state is judged. In this way the quantification of nonlinear dynamic properties of the frequency structure of the QRST yields information about the presence and extent of coronary artery disease (CAD), myocardial ischemia, cardiac electrical stability, risk of malignant ventricular arrhydthmia, site(s) of origin of malignant arrhythmias, extent of malignancy of arrhythmias, degree of antiarrhythmic drug efficacy, neural and humoral inputs to the heart, pump function/ejection fraction, and ongoing organ rejection in cardiac transplant patients.

公开(公告)号：CA2554407C

公开(公告)日：2015-11-24

申请号：CA2554407

申请日：2005-01-27

Applicant: ASPECT MEDICAL SYSTEMS INC

Inventor： STRUYS MICHEL MRF ,  DE SMET TOM ,  SHAFER STEVEN L

IPC: A61M5/00 ,  A61M5/172 ,  A61M15/00

Abstract: The present invention provides a system and method for determining and maintaining a concentration level of medication in a patient sufficient to achieve and maintain a desired effect on that patient. Generally speaking, in accordance with one embodiment of the invention, a medication delivery controller uses a patient response profile to determine a concentration of medication in the patient that will achieve the desired effect on the patient. The patient response profile is a graphical, tabular or analytical expression of the relationship between the concentration of a medication and the effect of the medication at the specific concentration. Using this information, the medication delivery controller provides instructions to a medication delivery unit such as, for example, an infusion pump or inhalation device, to deliver the medication to the patient at a rate that will achieve the desired concentration level of the medication in the patient.

公开(公告)号：BRPI0719527A2

公开(公告)日：2014-10-07

申请号：BRPI0719527

申请日：2007-10-12

Applicant: ASPECT MEDICAL SYSTEMS INC

Inventor： BRUMER REBECCA ,  CHAMOUN NASSIB G ,  CORDERO RAFAEL M ,  DAVIDSON MARC ,  KIELY JAMES P

IPC: A61B5/308 ,  H01Q1/22

Abstract: This invention relates to a physiological sensor which acquires pre-programmed data from an electrode or an electrode array using Radio Frequency Identification (RFID) technology. The source of the sensor may be authenticated by means of a wireless interface between an RFID transponder affixed to the electrode array, and an RFID interrogator embedded in the patient interface cable. The criteria for use are then verified to ensure that they are met by the electrode array before beginning signal acquisition. If the criteria are not met, a message is provided to the user via the monitor.

公开(公告)号：BRPI0719524A2

公开(公告)日：2014-06-03

申请号：BRPI0719524

申请日：2007-10-12

Applicant: ASPECT MEDICAL SYSTEMS INC

Inventor： BRUMER REBECCA ,  CHAMOUN NASSIB G ,  CORDERO RAFAEL M ,  DAVIDSON MARC ,  KIELY JAMES P

IPC: G06K7/00 ,  A61B5/308 ,  G06K19/077

Abstract: This invention relates to a physiological sensor which acquires pre-programmed data from an electrode or an electrode array using Radio Frequency Identification (RFID) technology. The source of the sensor may be authenticated by means of a wireless interface between an RFID transponder affixed to the electrode array, and an RFID interrogator embedded in the patient interface cable. The criteria for use are then verified to ensure that they are met by the electrode array before beginning signal acquisition. If the criteria are not met, a message is provided to the user via the monitor.

公开(公告)号：CA2594456C

公开(公告)日：2014-04-29

申请号：CA2594456

申请日：2006-01-12

Applicant: ASPECT MEDICAL SYSTEMS INC

Inventor： GREENWALD SCOTT D ,  DEVLIN PHILIP H ,  SIGL JEFFREY C

IPC: A61B5/16 ,  A61B5/0476 ,  G06F19/00

Abstract: The present invention is a system and method of deriving and computing features and indices that predict the likelihood of psychological and neurological adverse events such as suicidal thoughts and/or actions. The method of the present invention further predicts the likelihood of suicidal thoughts and/or actions prior to and/or during treatment for psychological disease. To obtain such features and indices, power spectrum and time domain values are derived from biopotential signals acquired from the subject being tested. The system and method identify people who are likely to experience changing, especially worsening, symptoms of psychological and neurological adverse events such as suicidal thoughts or actions and who therefore may be at risk (e.g. suicide).

公开(公告)号：AU2007313908B2

公开(公告)日：2011-10-20

申请号：AU2007313908

申请日：2007-10-12

Applicant: ASPECT MEDICAL SYSTEMS INC

Inventor： KIELY JAMES P ,  REBECCA BRUMER ,  CORDERO RAFAEL M ,  MARC DAVIDSON ,  CHAMOUN NASSIB G

IPC: G06K7/00 ,  A61B5/308 ,  G06K19/077

Abstract: This invention relates to a system of communicating with a radio frequency identification (RFID) transponder microchip (IC) for the purpose of accessing pre¬ programmed data. Such system involves direct electrical contact between the system reading the data from the memory in the transponder IC and the IC itself via two mechanical contact points. This system provides an interface with a transponder IC in order to energize the IC. Once the presence of the transponder IC is detected, the host system can read or write to and process preprogrammed data stored in the IC.

公开(公告)号：AT506006T

公开(公告)日：2011-05-15

申请号：AT02746642

申请日：2002-06-21

Applicant: ASPECT MEDICAL SYSTEMS INC

Inventor： SHAMBROOM JOHN ,  SMITH CHARLES ,  CAI HONGMEI ,  MERRICK EDWIN

IPC: A61B5/308

Abstract: A system and method of identifying and removing artifact from radio frequency noise from biopotentials identifies epochs contaminated with radio frequency noise. Contaminated epochs are then replaced with recent uncontaminated epochs stored in a buffer, depending on the current level of artifact and the availability of suitable data. Discontinuities arising at the beginning of the replaced epochs are smoothed by means of a windowing function.