Patents by Inventor Philip H. Devlin
Philip H. Devlin has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 8005534Abstract: 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).Type: GrantFiled: January 12, 2006Date of Patent: August 23, 2011Assignee: Nellcor Puritan Bennett LLCInventors: Scott D. Greenwald, Philip H. Devlin, Jeffrey C. Sigl
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Patent number: 7809434Abstract: The invention provides a method of estimating cerebral sources of electrical activity from a small subset of EEG channels utilizing existing methods to provide a 3-dimensional, discrete, distributed, linear solution to the inverse problem using inputs consisting of a small number of EEG channels (e.g., 4 channels) augmented with synthetic EEG data for the other channels. The resultant image of cerebral electrical activity in the region of the EEG channels from which data is recorded is of comparable spatial resolution in the corresponding region to images of cerebral electrical activity obtained using a complete set of EEG channels (e.g., using 24 channels).Type: GrantFiled: December 5, 2005Date of Patent: October 5, 2010Assignee: Nellcor Puritan Bennett LLCInventors: Tim Kofol, Scott D. Greenwald, Philip H. Devlin
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System and method of prediction of response to neurological treatment using the electroencephalogram
Patent number: 7706871Abstract: Disclosed is a system and method of assessing the efficacy of and predicting response to treatment of neurological or psychological disorders. The preferred embodiment uses at least two surface electrodes to acquire EEG signals from the surface of a patient's body, a processor for computing from the EEG signals various features and indices that are representative of the patient's neurological or psychological state. Pretreatment indices represent a patient's neurological or psychological state and therefore may be used to predict the response to treatment. Changes in these parameters may be used to assess the efficacy of treatment and to modify the treatment to optimize the resultant patient state.Type: GrantFiled: February 18, 2005Date of Patent: April 27, 2010Assignee: Nellcor Puritan Bennett LLCInventors: Philip H. Devlin, Scott D. Greenwald -
Patent number: 7418290Abstract: Disclosed is a system and method of assessing the efficacy of treatment of neurological or psychological disorders. The preferred embodiment uses at least two surface electrodes to acquire EEG signals from the surface of a patient's body, a processor for computing from the EEG signals various features and indices that are representative of the patient's neurological or psychological state. Changes in these parameters may be used to assess the efficacy of treatment and to modify the treatment to optimize the resultant patient state.Type: GrantFiled: May 6, 2004Date of Patent: August 26, 2008Assignee: Aspect Medical Systems, Inc.Inventors: Philip H. Devlin, Scott D. Greenwald
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Patent number: 7231245Abstract: The present invention is a system and method that produces features and indices that indicate the presence or absence of a disease or condition, or of the progression of a disease or condition. The system and method of the present invention also produce features and indices that predict responsiveness to medication from a premedication baseline. The system and method of the present invention further incorporates a testing methodology to improve the performance characteristics of the features or indices. To obtain such features and indices, time domain, power spectrum, bispectrum and higher order spectrum values are derived from biopotential signals taken from the subject being tested.Type: GrantFiled: January 6, 2003Date of Patent: June 12, 2007Assignee: Aspect Medical Systems, Inc.Inventors: Scott D. Greenwald, Charles P. Smith, Jeffrey C. Sigl, Philip H. Devlin
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Patent number: 6654626Abstract: 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.Type: GrantFiled: May 28, 2002Date of Patent: November 25, 2003Assignee: Aspect Medical Systems, Inc.Inventors: Philip H. Devlin, Rafael M. Cordero, Nassib G. Chamoun, John R. Shambroom, Charles Fendrock, Terrie L. McDaniel
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Publication number: 20030181821Abstract: The present invention is a system and method that produces features and indices that indicate the presence or absence of a disease or condition, or of the progression of a disease or condition. The system and method of the present invention also produce features and indices that predict responsiveness to medication from a premedication baseline. The system and method of the present invention further incorporates a testing methodology to improve the performance characteristics of the features or indices. To obtain such features and indices, time domain, power spectrum, bispectrum and higher order spectrum values are derived from biopotential signals taken from the subject being tested.Type: ApplicationFiled: January 6, 2003Publication date: September 25, 2003Applicant: Aspect Medical Systems, Inc.Inventors: Scott D. Greenwald, Charles P. Smith, Jeffrey C. Sigl, Philip H. Devlin
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Publication number: 20020183605Abstract: 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.Type: ApplicationFiled: May 28, 2002Publication date: December 5, 2002Inventors: Philip H. Devlin, Rafael M. Cordero, Nassib G. Chamoun, John R. Shambroom, Charles Fendrock, Terrie L. McDaniel
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Patent number: 6434410Abstract: 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.Type: GrantFiled: June 19, 1998Date of Patent: August 13, 2002Assignee: Aspect Medical Systems, Inc.Inventors: Rafael M. Cordero, Philip H. Devlin
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Patent number: 6394953Abstract: 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.Type: GrantFiled: February 25, 2000Date of Patent: May 28, 2002Assignee: Aspect Medical Systems, Inc.Inventors: Philip H. Devlin, Rafael M. Cordero, Nassib G. Chamoun, John R. Shambroom, Charles Fendrock, Terrie L. McDaniel
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Patent number: 6338713Abstract: 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.Type: GrantFiled: August 18, 1998Date of Patent: January 15, 2002Assignee: Aspect Medical Systems, Inc.Inventors: Nassib G. Chamoun, Philip H. Devlin
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Patent number: 6298255Abstract: A sensor system which includes a biopotential signal monitor, a smart sensor and the accompanying hardware and software interface which authenticates the source and validity of the smart sensor and also verifies that the smart sensor meets various criteria for use.Type: GrantFiled: June 9, 1999Date of Patent: October 2, 2001Assignee: Aspect Medical Systems, Inc.Inventors: Rafael M. Cordero, Philip H. Devlin, Nassib G. Chamoun, John R. Shambroom, Edwin B. Merrick, Joao Melo
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Patent number: 6236874Abstract: 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.Type: GrantFiled: September 28, 1998Date of Patent: May 22, 2001Assignee: Aspect Medical Systems, Inc.Inventors: Philip H. Devlin, Nassib G. Chamoun, John R. Shambroom, Mark E. Bruckner, Todd A. Marcus
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Patent number: 6032064Abstract: 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.Type: GrantFiled: October 11, 1996Date of Patent: February 29, 2000Assignee: Aspect Medical Systems, Inc.Inventors: Philip H. Devlin, Rafael M. Cordero, Nassib G. Chamoun, John R. Shambroom, Charles Fendrock, Terrie L. McDaniel
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Patent number: 6032072Abstract: 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.Type: GrantFiled: January 30, 1998Date of Patent: February 29, 2000Assignee: Aspect Medical Systems, Inc.Inventors: Scott D. Greenwald, Philip H. Devlin, Charles P. Smith
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Patent number: 5813404Abstract: 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.Type: GrantFiled: October 20, 1995Date of Patent: September 29, 1998Assignee: Aspect Medical Systems, Inc.Inventors: Philip H. Devlin, Nassib G. Chamoun, John R. Shambroom, Mark E. Bruckner, Todd A. Marcus
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Patent number: 5128979Abstract: A personal emergency response system (PERS) is disclosed which includes a method and apparatus for monitoring alarm signals to provide improved emergency response capabilities and enhanced system operability. The system includes a local response center for relaying alarm signals received from subscribers to mobile on-site field personnel via individual paging units. The system is also capable of retransmitting an alarm signal in the event that a response to the original alarm signal has not been registered within a predetermined period of time. The system is also provided with redundant communications paths to minimize the possibility of a missed alarm message from a subscriber, and self-test capabilities for detecting system faults and transmitting fault messages to the individual paging units of the system.Type: GrantFiled: February 6, 1991Date of Patent: July 7, 1992Assignee: Lifeline Systems Inc.Inventors: Richard M. Reich, Philip H. Devlin
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Patent number: 4760593Abstract: A personal alarm system is disclosed which incorporates a speakerphone so as to permit substantially handsfree operation and remote activation. The system includes a speakerphone which interfaces to a subscriber station. The subscriber station in turn interfaces over a communications link to a central monitoring station which is operative to receive and analyze messages transmitted to the central monitoring station by the subscriber station. Following transmission of a message from the subscriber station to the central monitoring station, the central monitoring station may transmit a control signal to the subscriber station which causes the subscriber station to activate the speakerphone to permit verbal communication with a subscriber who may be immobilized and/or physically unable to initiate a telephone call or answer a telephone.Type: GrantFiled: October 17, 1986Date of Patent: July 26, 1988Assignee: Lifeline Systems, Inc.Inventors: L. Dennis Shapiro, Robert M. Armington, Theodore Bially, Philip H. Devlin