Patents by Inventor Raymond Woo
Raymond Woo 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: 20210085235Abstract: The present disclosure provides systems and methods for seizure detection. The method for seizure detection may include receiving a plurality of electroencephalography (EEG) signals over a plurality of channels for a subject, preprocessing the plurality of EEG signals by segmenting the plurality of EEG signals for each channel into a plurality of temporal data segments, extracting a plurality of features from each temporal data segment for each channel, and applying a machine learning algorithm to the plurality of features to perform a seizure binary classification for each temporal data segment for each channel. A control policy may be employed to determine a seizure burden on the aggregated seizure binary classifications. When the seizure burden is equal to or exceeds a threshold, a notification may be generated. The notification may be usable by a healthcare practitioner to assess whether the subject may be at risk of having a seizure.Type: ApplicationFiled: July 8, 2020Publication date: March 25, 2021Inventors: Baharan Kamousi, Mehdi Hajinoroozi, Suganya Karunakaran, Alexander M. Grant, Jianchun Yi, Raymond Woo, Josef Parvizi, Xingjuan Chao
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Patent number: 10888240Abstract: An electrode carrier system includes one or more electrode assemblies having an electrode body. One or more tubular members extend from the electrode body and define a lumen terminating in a distal opening. The electrode assemblies carry a reservoir containing a conductive fluid or gel. The reservoir is in fluid communication with the lumens in the tubular members, and the electrode assemblies are typically supported on a backing which may optionally be configured as a headband. Systems are for tracking patient movement may be used in combination with the electrode carrier system.Type: GrantFiled: October 13, 2017Date of Patent: January 12, 2021Assignee: CeriBell, Inc.Inventors: Josef Parvizi, Xingjuan Chao, Bradley G. Bachelder, Raymond Woo, Mathew A. Herron, Vahid Saadat, Alexander M. Grant, Jianchun Yi
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Patent number: 10849553Abstract: Systems and methods for sonifying electrical signals obtained from a living subject, particularly EEG signals, are disclosed. A time-domain signal representing the activity of an organ is obtained. A voltage of the time-domain signal over a time block is determined. An acoustic signal based on the time-domain signal over the time block is produced. The acoustic signal comprises one or more audibly discernible variations representative of the activity of the organ. If the determined voltage is over a threshold voltage, the time-domain signal is squelched over at least a portion of the time-block as the acoustic signal is produced. The time-domain signal can be squelched by ramping down the signal as an input to produce the acoustic signal. The frequency spectrum of the acoustic signal can also be adjusted as it is produced, such as by flattening the signal and/or attenuating high frequencies along the frequency spectrum of the signal.Type: GrantFiled: March 27, 2019Date of Patent: December 1, 2020Assignee: CeriBell, Inc.Inventors: Alexander Grant, Chris Chafe, Josef Parvizi, Jianchun Yi, Raymond Woo, Xingjuan Chao
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Publication number: 20200305786Abstract: Systems and methods for sonifying electrical signals obtained from a living subject, particularly EEG signals, are disclosed. A time-domain signal representing the activity of an organ is obtained. A voltage of the time-domain signal over a time block is determined. An acoustic signal based on the time-domain signal over the time block is produced. The acoustic signal comprises one or more audibly discernible variations representative of the activity of the organ. If the determined voltage is over a threshold voltage, the time-domain signal is squelched over at least a portion of the time-block as the acoustic signal is produced. The time-domain signal can be squelched by ramping down the signal as an input to produce the acoustic signal. The frequency spectrum of the acoustic signal can also be adjusted as it is produced, such as by flattening the signal and/or attenuating high frequencies along the frequency spectrum of the signal.Type: ApplicationFiled: March 27, 2019Publication date: October 1, 2020Inventors: Alexander GRANT, Chris CHAFE, Josef PARVIZI, Jianchun YI, Raymond WOO, Xingjuan CHAO
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Patent number: 10743809Abstract: The present disclosure provides systems and methods for seizure detection. The method for seizure detection may include receiving a plurality of electroencephalography (EEG) signals over a plurality of channels for a subject, preprocessing the plurality of EEG signals by segmenting the plurality of EEG signals for each channel into a plurality of temporal data segments, extracting a plurality of features from each temporal data segment for each channel, and applying a machine learning algorithm to the plurality of features to perform a seizure binary classification for each temporal data segment for each channel. A control policy may be employed to determine a seizure burden on the aggregated seizure binary classifications. When the seizure burden is equal to or exceeds a threshold, a notification may be generated. The notification may be usable by a healthcare practitioner to assess whether the subject may be at risk of having a seizure.Type: GrantFiled: September 20, 2019Date of Patent: August 18, 2020Assignee: CeriBell, Inc.Inventors: Baharan Kamousi, Mehdi Hajinoroozi, Suganya Karunakaran, Alexander Grant, Jianchun Yi, Raymond Woo, Josef Parvizi, Xingjuan Chao
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Publication number: 20200038245Abstract: A method and surgical system including a laser source for generating a pulsed laser beam, an imaging system including a detector, shared optics configured for directing the pulsed laser beam to an object to be sampled and confocally deflecting back-reflected light from the object to the detector, a patient interface, through which the pulsed laser beam is directed, the patient interface having, a cup with a large and small opening, and a notched ring inside the cup; and a controller operatively coupled to the laser source, the imaging system and the shared optics, the controller configured to align the eye for procedure.Type: ApplicationFiled: October 14, 2019Publication date: February 6, 2020Inventors: John S. Hart, David A. Dewey, Georg Schuele, Phillip H. Gooding, Christine J. Beltran, Javier G. Gonzalez, Katrina B. Sheehy, Jeffrey A. Golda, Raymond Woo, Madeleine C. O'Meara, Noah Bareket, Thomas Z. Teisseyre, Bruce Woodley
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Publication number: 20190343462Abstract: Systems, devices, and methods are provided to assess connection quality between the electrodes of a bioelectrical signal measurement and/or electrical stimulation device and the tissue, typically skin, of the subject. A test signal is provided to a first electrode, voltage differences between the first electrode and additional electrodes are determined, an impedance of the first electrode is determined based on the voltages differences, and the determined impedance indicates connection quality. This process is typically repeated for all of the electrodes to determine connection quality. The user or subject can be alerted if the connection quality is poor, and the bioelectrical signal that is recorded can be provided with data points indicating connection quality during the signal recording.Type: ApplicationFiled: March 25, 2019Publication date: November 14, 2019Inventors: Alexander M. GRANT, Jianchun YI, Bradley G. BACHELDER, Raymond WOO, Josef PARVIZI, Xingjuan CHAO
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CONFOCAL DETECTION TO MINIMIZE CAPSULOTOMY OVERCUT WHILE DYNAMICALLY RUNNING ON THE CAPSULAR SURFACE
Publication number: 20190343684Abstract: Embodiments of this disclosure disclose an imaging system, including an eye interface device, a scanning assembly, a beam source, a free-floating mechanism, and a detection assembly. The beam source generates an electromagnetic radiation beam. The detection assembly generates a signal indicative of an intensity of a portion of the electromagnetic radiation beam reflected from the focal point location. A subsequent focal point of the electromagnetic radiation beam may be adjusted per the measured intensity signal. In some embodiments, an intensity signal below a lower threshold value may suggest a depth increase for a subsequent focal point. An intensity signal above an upper threshold value may suggest a depth decrease for a subsequent focal point. And, an intensity signal between the lower and upper thresholds may suggest a depth be maintained for a subsequent focal point. The focal point may be adjusted after each pulse or after a plurality of pulses.Type: ApplicationFiled: July 25, 2019Publication date: November 14, 2019Inventors: Georg Schuele, Raymond Woo, John S. Hart -
Publication number: 20190336340Abstract: A laser eye surgery system includes a laser to generate a laser beam. A topography measurement system measures corneal topography. A processor is coupled to the laser and the topography measurement system, the processor embodying instructions to measure a first corneal topography of the eye. A first curvature of the cornea is determined. A target curvature of the cornea that treats the eye is determined. A first set of incisions and a set of partial incisions in the cornea smaller than the first set of incisions are determined. The set of partial incisions is incised on the cornea by the laser beam. A second corneal topography is measured. A second curvature of the cornea is determined. The second curvature is determined to differ from the target curvature and a second set of incisions are determined. The second set of incisions is incised on the cornea.Type: ApplicationFiled: June 28, 2019Publication date: November 7, 2019Inventors: Bruce R. Woodley, Michael J. Simoneau, Raymond Woo, Javier G. Gonzalez
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Patent number: 10441463Abstract: A method of reversibly separating an imaging assembly from an optical path in a laser surgical system includes generating an electromagnetic beam, propagating the electromagnetic beam from the beam source to a scanner along an optical path, the optical path comprising a first optical element that attenuates the electromagnetic beam, reversibly inserting a confocal bypass assembly into the optical path, diverting the electromagnetic beam along a diversion optical path around the first optical element, wherein the confocal bypass assembly automatically exits the optical path when a power loss occurs to one or more components of the system.Type: GrantFiled: May 6, 2016Date of Patent: October 15, 2019Assignee: OPTIMEDICA CORPORATIONInventors: David A. Dewey, Georg Schuele, Noah Bareket, John S. Hart, Javier G. Gonzalez, Raymond Woo, Thomas Z. Teisseyre, Jeffrey A. Golda, Katrina B. Sheehy, Madeleine C. O'Meara, Bruce Woodley
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Patent number: 10441465Abstract: A method and surgical system including a laser source for generating a pulsed laser beam, an imaging system including a detector, shared optics configured for directing the pulsed laser beam to an object to be sampled and confocally deflecting back-reflected light from the object to the detector, a patient interface, through which the pulsed laser beam is directed, the patient interface having, a cup with a large and small opening, and a notched ring inside the cup; and a controller operatively coupled to the laser source, the imaging system and the shared optics, the controller configured to align the eye for procedure.Type: GrantFiled: April 26, 2016Date of Patent: October 15, 2019Assignee: OPTIMEDICA CORPORATIONInventors: John S. Hart, David A. Dewey, Georg Schuele, Phillip H. Gooding, Christine J. Beltran, Javier G. Gonzalez, Katrina B. Sheehy, Jeffrey A. Golda, Raymond Woo, Madeleine C. O'Meara, Noah Bareket, Thomas Z. Teisseyre, Bruce Woodley
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Confocal detection to minimize capsulotomy overcut while dynamically running on the capsular surface
Patent number: 10363173Abstract: Embodiments of this disclosure disclose an imaging system, including an eye interface device, a scanning assembly, a beam source, a free-floating mechanism, and a detection assembly. The beam source generates an electromagnetic radiation beam. The detection assembly generates a signal indicative of an intensity of a portion of the electromagnetic radiation beam reflected from the focal point location. A subsequent focal point of the electromagnetic radiation beam may be adjusted per the measured intensity signal. In some embodiments, an intensity signal below a lower threshold value may suggest a depth increase for a subsequent focal point. An intensity signal above an upper threshold value may suggest a depth decrease for a subsequent focal point. And, an intensity signal between the lower and upper thresholds may suggest a depth be maintained for a subsequent focal point. The focal point may be adjusted after each pulse or after a plurality of pulses.Type: GrantFiled: February 2, 2015Date of Patent: July 30, 2019Assignee: OPTIMEDICA CORPORATIONInventors: Georg Schuele, Raymond Woo, John S. Hart -
Patent number: 10357399Abstract: A laser eye surgery system includes a laser to generate a laser beam. A topography measurement system measures corneal topography. A processor is coupled to the laser and the topography measurement system, the processor embodying instructions to measure a first corneal topography of the eye. A first curvature of the cornea is determined. A target curvature of the cornea that treats the eye is determined. A first set of incisions and a set of partial incisions in the cornea smaller than the first set of incisions are determined. The set of partial incisions is incised on the cornea by the laser beam. A second corneal topography is measured. A second curvature of the cornea is determined. The second curvature is determined to differ from the target curvature and a second set of incisions are determined. The second set of incisions is incised on the cornea.Type: GrantFiled: December 14, 2015Date of Patent: July 23, 2019Assignee: OPTIMEDICA CORPORATIONInventors: Bruce R. Woodley, Michael J. Simoneau, Raymond Woo, Javier G. Gonzalez
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Patent number: 10285646Abstract: Systems, devices, and methods are provided to assess connection quality between the electrodes of a bioelectrical signal measurement and/or electrical stimulation device and the tissue, typically skin, of the subject. A test signal is provided to a first electrode, voltage differences between the first electrode and additional electrodes are determined, an impedance of the first electrode is determined based on the voltages differences, and the determined impedance indicates connection quality. This process is typically repeated for all of the electrodes to determine connection quality. The user or subject can be alerted if the connection quality is poor, and the bioelectrical signal that is recorded can be provided with data points indicating connection quality during the signal recording.Type: GrantFiled: February 27, 2018Date of Patent: May 14, 2019Assignee: CeriBell, Inc.Inventors: Alexander M. Grant, Jianchun Yi, Bradley G. Bachelder, Raymond Woo, Josef Parvizi, Xingjuan Chao
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Publication number: 20190076017Abstract: A laser surgery system includes a light source, an eye interface device, a scanning assembly, a confocal detection assembly and preferably a confocal bypass assembly. The light source generates an electromagnetic beam. The scanning assembly scans a focal point of the electromagnetic beam to different locations within the eye. An optical path propagates the electromagnetic beam from a light source to the focal point, and also propagates a portion of the electromagnetic beam reflected from the focal point location back along at least a portion of the optical path. The optical path includes an optical element associated with a confocal detection assembly that diverts a portion of the reflected electromagnetic radiation to a sensor. The sensor generates an intensity signal indicative of intensity the electromagnetic beam reflected from the focal point location. The confocal bypass assembly reversibly diverts the electromagnetic beam along a diversion optical path around the optical element.Type: ApplicationFiled: November 12, 2018Publication date: March 14, 2019Inventors: Georg Schuele, Noah Bareket, David Dewey, John S. Hart, Javier G. Gonzalez, Raymond Woo, Thomas Z. Teisseyre, Jeffrey A. Golda, Katrina B. Sheehy, Madeleine C O'Meara, Bruce Woodley
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Patent number: 10123696Abstract: A laser surgery system includes a light source, an eye interface device, a scanning assembly, a confocal detection assembly and preferably a confocal bypass assembly. The light source generates an electromagnetic beam. The scanning assembly scans a focal point of the electromagnetic beam to different locations within the eye. An optical path propagates the electromagnetic beam from a light source to the focal point, and also propagates a portion of the electromagnetic beam reflected from the focal point location back along at least a portion of the optical path. The optical path includes an optical element associated with a confocal detection assembly that diverts a portion of the reflected electromagnetic radiation to a sensor. The sensor generates an intensity signal indicative of intensity the electromagnetic beam reflected from the focal point location. The confocal bypass assembly reversibly diverts the electromagnetic beam along a diversion optical path around the optical element.Type: GrantFiled: December 19, 2014Date of Patent: November 13, 2018Assignee: OPTIMEDICA CORPORATIONInventors: Georg Schuele, Noah Bareket, David Dewey, John S. Hart, Javier G Gonzalez, Raymond Woo, Thomas Z Teisseyre, Jeffrey A Golda, Katrina B Sheehy, Madeleine C O'Meara, Bruce Woodley
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Publication number: 20180049661Abstract: An electrode carrier system includes one or more electrode assemblies having an electrode body. One or more tubular members extend from the electrode body and define a lumen terminating in a distal opening. The electrode assemblies carry a reservoir containing a conductive fluid or gel. The reservoir is in fluid communication with the lumens in the tubular members, and the electrode assemblies are typically supported on a backing which may optionally be configured as a headband. Systems are for tracking patient movement may be used in combination with the electrode carrier system.Type: ApplicationFiled: October 13, 2017Publication date: February 22, 2018Applicant: CeriBell, Inc.Inventors: Josef Parvizi, Xingjuan Chao, Bradley G. Bachelder, Raymond Woo, Mathew A. Herron, Vahid Saadatt, Alexander M. Grant, Jianchum Yi
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Patent number: 9820670Abstract: An electrode carrier system includes one or more electrode assemblies having an electrode body. One or more tubular members extend from the electrode body and define a lumen terminating in a distal opening. The electrode assemblies carry a reservoir containing a conductive fluid or gel. The reservoir is in fluid communication with the lumens in the tubular members, and the electrode assemblies are typically supported on a backing which may optionally be configured as a headband. Systems are for tracking patient movement may be used in combination with the electrode carrier system.Type: GrantFiled: December 21, 2016Date of Patent: November 21, 2017Assignee: Ceribell, Inc.Inventors: Josef Parvizi, Xingjuan Chao, Bradley G. Bachelder, Raymond Woo, Mathew A. Herron, Vahid Saadat, Alexander M. Grant, Jianchum Yi
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Publication number: 20170281036Abstract: An electrode carrier system includes one or more electrode assemblies having an electrode body. One or more tubular members extend from the electrode body and define a lumen terminating in a distal opening. The electrode assemblies carry a reservoir containing a conductive fluid or gel. The reservoir is in fluid communication with the lumens in the tubular members, and the electrode assemblies are typically supported on a backing which may optionally be configured as a headband. Systems are for tracking patient movement may be used in combination with the electrode carrier system.Type: ApplicationFiled: December 21, 2016Publication date: October 5, 2017Applicant: CeriBell, Inc.Inventors: Josef Parvizi, Xingjuan Chao, Bradley G. Bachelder, Raymond Woo, Mathew A. Herron, Vahid Saadat, Alexander M. Grant, Jianchum Yi
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Publication number: 20160250068Abstract: A method of reversibly separating an imaging assembly from an optical path in a laser surgical system includes generating an electromagnetic beam, propagating the electromagnetic beam from the beam source to a scanner along an optical path, the optical path comprising a first optical element that attenuates the electromagnetic beam, reversibly inserting a confocal bypass assembly into the optical path, diverting the electromagnetic beam along a diversion optical path around the first optical element, wherein the confocal bypass assembly automatically exits the optical path when a power loss occurs to one or more components of the system.Type: ApplicationFiled: May 6, 2016Publication date: September 1, 2016Inventors: David A. Dewey, Georg Schuele, Noah Bareket, John S. Hart, Javier G. Gonzalez, Raymond Woo, Thomas Z. Teisseyre, Jeffrey A. Golda, Katrina B. Sheehy, Madeleine C. O'Meara, Bruce Woodley