Patents by Inventor Guy DUMONT
Guy DUMONT 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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Publication number: 20240216610Abstract: A control system for administration of a drug comprises a drug administration actuator for administering the drug to a patient at a controllable dosage; a monitor for measuring an effect of the drug on the patient; and a controller configured to determine a control signal to the drug administration actuator; wherein the controller is configured to implement a closed loop model-predictive control scheme comprising, for each of a series of time steps, minimizing a cost function subject to one or more constraints to determine the control signal, the cost function based at least in part on a reference level and the monitor measurement; wherein the control signal is used as an input to an auxiliary model to estimate at least one concentration level of the drug in the patient; and wherein the constraints comprise at least one constraint on the estimate of the concentration level of the drug.Type: ApplicationFiled: December 15, 2023Publication date: July 4, 2024Applicant: The University of British ColumbiaInventors: Guy Dumont, Mark Ansermino, Sara Khosravi, Nicholas West
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Patent number: 11883631Abstract: A control system for administration of a drug comprises a drug administration actuator for administering the drug to a patient at a controllable dosage; a monitor for measuring an effect of the drug on the patient; and a controller configured to determine a control signal to the drug administration actuator; wherein the controller is configured to implement a closed loop model-predictive control scheme comprising, for each of a series of time steps, minimizing a cost function subject to one or more constraints to determine the control signal, the cost function based at least in part on a reference level and the monitor measurement; wherein the control signal is used as an input to an auxiliary model to estimate at least one concentration level of the drug in the patient; and wherein the constraints comprise at least one constraint on the estimate of the concentration level of the drug.Type: GrantFiled: February 1, 2022Date of Patent: January 30, 2024Assignee: The University of British ColumbiaInventors: Guy Dumont, Mark Ansermino, Sara Khosravi, Nicholas West
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Publication number: 20220211943Abstract: A control system for administration of a drug comprises a drug administration actuator for administering the drug to a patient at a controllable dosage; a monitor for measuring an effect of the drug on the patient; and a controller configured to determine a control signal to the drug administration actuator; wherein the controller is configured to implement a closed loop model-predictive control scheme comprising, for each of a series of time steps, minimizing a cost function subject to one or more constraints to determine the control signal, the cost function based at least in part on a reference level and the monitor measurement; wherein the control signal is used as an input to an auxiliary model to estimate at least one concentration level of the drug in the patient; and wherein the constraints comprise at least one constraint on the estimate of the concentration level of the drug.Type: ApplicationFiled: February 1, 2022Publication date: July 7, 2022Applicant: The University of British ColumbiaInventors: Guy Dumont, Mark Ansermino, Sara Khosravi, Nicholas West
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Patent number: 11266780Abstract: A control system for administration of a drug comprises a drug administration actuator for administering the drug to a patient at a controllable dosage; a monitor for measuring an effect of the drug on the patient; and a controller configured to determine a control signal to the drug administration actuator; wherein the controller is configured to implement a closed loop model-predictive control scheme comprising, for each of a series of time steps, minimizing a cost function subject to one or more constraints to determine the control signal, the cost function based at least in part on a reference level and the monitor measurement; wherein the control signal is used as an input to an auxiliary model to estimate at least one concentration level of the drug in the patient; and wherein the constraints comprise at least one constraint on the estimate of the concentration level of the drug.Type: GrantFiled: November 23, 2016Date of Patent: March 8, 2022Assignee: University of British ColumbiaInventors: Guy Dumont, Mark Ansermino, Sara Khosravi, Nicholas West
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Publication number: 20220031945Abstract: The invention relates to administration of clinical anesthesia. Particular embodiments provide systems and methods for controlled delivery of a combination of an analgesic agent and a hypnotic agent. More specifically, the invention relates to closed-loop control systems/methods for automatically controlling the administration of a combination of a hypnotic agent and an analgesic agent in a clinical anesthesia setting which incorporate feedback based on one or more indirect measures/indicia of analgesia. The invention further relates to such control systems/methods that account for limitations of such indirect measures/indicia of analgesia.Type: ApplicationFiled: August 10, 2021Publication date: February 3, 2022Applicant: The University of British ColumbiaInventors: Guy Dumont, Klaske Van Heusden, Mark Ansermino
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Patent number: 11116897Abstract: The invention relates to administration of clinical anesthesia. Particular embodiments provide systems and methods for controlled delivery of a combination of an analgesic agent and a hypnotic agent. More specifically, the invention relates to closed-loop control systems/methods for automatically controlling the administration of a combination of a hypnotic agent and an analgesic agent in a clinical anesthesia setting which incorporate feedback based on one or more indirect measures/indicia of analgesia. The invention further relates to such control systems/methods that account for limitations of such indirect measures/indicia of analgesia.Type: GrantFiled: April 12, 2017Date of Patent: September 14, 2021Assignee: The University of British ColumbiaInventors: Guy Dumont, Klaske Van Heusden, Mark Ansermino
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Publication number: 20200121206Abstract: There is described are electroencephalography (EEG) device. The EEG device comprises one or more inputs for connecting via electrodes to a subject, and one or more DC/AC EEG amplifiers for amplifying electric potential signals from a subject. Each DC/AC EEG amplifier comprises a preamplifier connected to the one or more inputs and configured to amplify a signal received at the one or more inputs, the preamplifier having a differential gain set so as to have a common mode rejection ratio (CMRR) of at least 100 dB. Each DC/AC EEG amplifier further comprises an amplifier circuit connected to the preamplifier and configured to further amplify the signal, and, based thereon, output an output signal comprising a DC component having a frequency of less than 0.02 Hz.Type: ApplicationFiled: June 26, 2018Publication date: April 23, 2020Inventors: Guy Dumont, Shahbaz Askari, Zoya Jafaryrabanybastany
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Patent number: 10459428Abstract: Sheetmaking cross-directional (CD) control requires a sophisticated model-based controller whose operation requires an accurate model of process behavior, but due to the complexity of the process, identifying these process models is challenging. Current techniques rely on open-loop process experimentation. Using non-causal scalar transfer functions for the steady-state CD process model and controller model avoid the problem of large dimensions associated with the CD process. These non-causal transfer functions can be represented by causal transfer functions that are equivalent to the non-causal ones in the sense of the output spectrum. A closed-loop optimal input design framework is proposed based on these causal equivalent models. CD actuators have responses in both sides along the cross direction which can be viewed as a non-causal behavior.Type: GrantFiled: September 23, 2016Date of Patent: October 29, 2019Assignee: Honeywell LimitedInventors: Qiugang Lu, Bhusban Gopaluni, Michael Forbes, Philip Loewen, Johan Backstrom, Guy Dumont
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Publication number: 20190143036Abstract: The invention relates to administration of clinical anesthesia. Particular embodiments provide systems and methods for controlled delivery of a combination of an analgesic agent and a hypnotic agent. More specifically, the invention relates to closed-loop control systems/methods for automatically controlling the administration of a combination of a hypnotic agent and an analgesic agent in a clinical anesthesia setting which incorporate feedback based on one or more indirect measures/indicia of analgesia. The invention further relates to such control systems/methods that account for limitations of such indirect measures/indicia of analgesia.Type: ApplicationFiled: April 12, 2017Publication date: May 16, 2019Applicant: The University of British ColumbiaInventors: Guy Dumont, Klaske Van Heusden, Mark Ansermino
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Patent number: 10219751Abstract: Methods, systems and related apparatus are provided to enable an electronic device to operate an external sensor comprising one or more emitters for emitting electromagnetic radiation of two different wavelengths and a detector for generating a response signal based on received electromagnetic radiation of the two different wavelengths connectable to an audio interface by applying a harmonic driving signal to a first contact and a second contact of the audio interface for driving the emitters of the external sensor, receiving the response signal at a third contact of the audio interface, demodulating and demultiplexing the response signal into a first wavelength response signal and a second wavelength response signal, analyzing the first and second wavelength response signals to determine one or more vital signs, and outputting the determined one or more vital signs.Type: GrantFiled: January 21, 2015Date of Patent: March 5, 2019Assignee: Lionsgate Technologies, Inc.Inventors: Christian Leth Petersen, John Mark Ansermino, Guy Dumont
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Publication number: 20180296759Abstract: A control system for administration of a drug comprises a drug administration actuator for administering the drug to a patient at a controllable dosage; a monitor for measuring an effect of the drug on the patient; and a controller configured to determine a control signal to the drug administration actuator; wherein the controller is configured to implement a closed loop model-predictive control scheme comprising, for each of a series of time steps, minimizing a cost function subject to one or more constraints to determine the control signal, the cost function based at least in part on a reference level and the monitor measurement; wherein the control signal is used as an input to an auxiliary model to estimate at least one concentration level of the drug in the patient; and wherein the constraints comprise at least one constraint on the estimate of the concentration level of the drug.Type: ApplicationFiled: November 23, 2016Publication date: October 18, 2018Applicant: The University of British ColumbiaInventors: Guy Dumont, Mark Ansermino, Sara Khosravi, Nicholas West
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Publication number: 20170261963Abstract: Sheetmaking cross-directional (CD) control requires a sophisticated model-based controller whose operation requires an accurate model of process behavior, but due to the complexity of the process, identifying these process models is challenging. Current techniques rely on open-loop process experimentation. Using non-causal scalar transfer functions for the steady-state CD process model and controller model avoid the problem of large dimensions associated with the CD process. These non-causal transfer functions can be represented by causal transfer functions that are equivalent to the non-causal ones in the sense of the output spectrum. A closed-loop optimal input design framework is proposed based on these causal equivalent models. CD actuators have responses in both sides along the cross direction which can be viewed as a non-causal behavior.Type: ApplicationFiled: September 23, 2016Publication date: September 14, 2017Inventors: Qiugang Lu, Bhusban Gopaluni, Michael Forbes, Philip Loewen, Johan Backstrom, Guy Dumont
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Patent number: 9189739Abstract: Systems and methods are provided for predicting a circadian state of an individual. The methods comprise: providing a model representative of the response of the circadian state to light stimulus, the model comprising at least one model variable representative of a probability distribution function (PDF) of a phase offset of the circadian state of the individual; and using the model to estimate an updated PDF of the phase offset, wherein using the model to estimate the updated PDF of the phase offset comprises performing a Bayesian estimation process commencing with an initial PDF of the phase offset and iterating toward the updated PDF of the phase offset.Type: GrantFiled: June 17, 2013Date of Patent: November 17, 2015Assignee: Pulsar Informatics, Inc.Inventors: Christopher Grey Mott, Guy DuMont, Diane Boivin, Daniel Joseph Mollicone
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Publication number: 20150133756Abstract: Methods, systems and related apparatus are provided to enable an electronic device to operate an external sensor comprising one or more emitters for emitting electromagnetic radiation of two different wavelengths and a detector for generating a response signal based on received electromagnetic radiation of the two different wavelengths connectable to an audio interface by applying a harmonic driving signal to a first contact and a second contact of the audio interface for driving the emitters of the external sensor, receiving the response signal at a third contact of the audio interface, demodulating and demultiplexing the response signal into a first wavelength response signal and a second wavelength response signal, analyzing the first and second wavelength response signals to determine one or more vital signs, and outputting the determined one or more vital signs.Type: ApplicationFiled: January 21, 2015Publication date: May 14, 2015Inventors: Christian Leth PETERSEN, John Mark ANSERMINO, Guy DUMONT
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Patent number: 8958859Abstract: Methods, systems and related apparatus are provided to enable an electronic device to operate an external sensor comprising one or more emitters for emitting electromagnetic radiation of two different wavelengths and a detector for generating a response signal based on received electromagnetic radiation of the two different wavelengths connectable to an audio interface by applying a harmonic driving signal to a first contact and a second contact of the audio interface for driving the emitters of the external sensor, receiving the response signal at a third contact of the audio interface, demodulating and demultiplexing the response signal into a first wavelength response signal and a second wavelength response signal, analyzing the first and second wavelength response signals to determine one or more vital signs, and outputting the determined one or more vital signs.Type: GrantFiled: May 14, 2012Date of Patent: February 17, 2015Assignee: Lionsgate Technologies, Inc.Inventors: Christian Leth Petersen, John Mark Ansermino, Guy Dumont
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Publication number: 20140155708Abstract: Methods, systems and related apparatus are provided for controlling an electronic device to operate an external sensor connectable to an audio interface of the electronic device by applying a first harmonic driving signal to a first contact and a second harmonic driving signal to a second contact of the audio interface for driving the external sensor, receiving a response signal at a third contact of the audio interface, adjusting at least one of the first and second harmonic driving signals, determining one or more physiological parameters based on characteristics of the first and second harmonic driving signals and the response signal, and outputting the determined one or more physiological parameters.Type: ApplicationFiled: May 13, 2013Publication date: June 5, 2014Applicant: LIONSGATE TECHNOLOGIES, INC.Inventors: Christian Leth Petersen, John Mark Ansermino, Guy Dumont
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Publication number: 20140073887Abstract: Methods, systems and related apparatus are provided to enable an electronic device to operate an external sensor comprising one or more emitters for emitting electromagnetic radiation of two different wavelengths and a detector for generating a response signal based on received electromagnetic radiation of the two different wavelengths connectable to an audio interface by applying a harmonic driving signal to a first contact and a second contact of the audio interface for driving the emitters of the external sensor, receiving the response signal at a third contact of the audio interface, demodulating and demultiplexing the response signal into a first wavelength response signal and a second wavelength response signal, analyzing the first and second wavelength response signals to determine one or more vital signs, and outputting the determined one or more vital signs.Type: ApplicationFiled: May 14, 2012Publication date: March 13, 2014Applicant: LONSGATE TECHNOLOGIES, INC.Inventors: Christian Leth Petersen, John Mark Ansermino, Guy Dumont
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Publication number: 20130282646Abstract: Systems and methods are provided for predicting a circadian state of an individual. The methods comprise: providing a model representative of the response of the circadian state to light stimulus, the model comprising at least one model variable representative of a probability distribution function (PDF) of a phase offset of the circadian state of the individual; and using the model to estimate an updated PDF of the phase offset, wherein using the model to estimate the updated PDF of the phase offset comprises performing a Bayesian estimation process commencing with an initial PDF of the phase offset and iterating toward the updated PDF of the phase offset.Type: ApplicationFiled: June 17, 2013Publication date: October 24, 2013Inventors: Christopher Grey Mott, Guy DuMont, Diane Boivin, Daniel Joseph Mollicone
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Patent number: 8484153Abstract: Systems and methods are provided for predicting a circadian state of an individual. The methods comprise: providing a model representative of the response of the circadian state to light stimulus, the model comprising at least one model variable representative of a probability distribution function (PDF) of a phase offset of the circadian state of the individual; and using the model to estimate an updated PDF of the phase offset, wherein using the model to estimate the updated PDF of the phase offset comprises performing a Bayesian estimation process commencing with an initial PDF of the phase offset and iterating toward the updated PDF of the phase offset.Type: GrantFiled: November 27, 2009Date of Patent: July 9, 2013Assignees: Pulsar Informatics, Inc., The Royal Institute for the Advancement of Learning/McGill University, The University of British ColumbiaInventors: Christopher Mott, Guy Dumont, Diane Boivin, Daniel Mollicone
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Publication number: 20100138379Abstract: Systems and methods are provided for predicting a circadian state of an individual. The methods comprise: providing a model representative of the response of the circadian state to light stimulus, the model comprising at least one model variable representative of a probability distribution function (PDF) of a phase offset of the circadian state of the individual; and using the model to estimate an updated PDF of the phase offset, wherein using the model to estimate the updated PDF of the phase offset comprises performing a Bayesian estimation process commencing with an initial PDF of the phase offset and iterating toward the updated PDF of the phase offset.Type: ApplicationFiled: November 27, 2009Publication date: June 3, 2010Inventors: Christopher MOTT, Guy DUMONT, Diane BOIVIN, Daniel MOLLICONE