Patents by Inventor David A. Usher

David A. Usher 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).

  • Publication number: 20240108453
    Abstract: Methods employ bioresorbable corneal implants to treat corneal ectatic disorders and/or refractive errors. The corneal implants may be formed from a porous microstructure that can encourage the proliferation of endogenous keratocytes. As such, the corneal implants act as tissue scaffolds that promote tissue growth to increase the biomechanical stability and/or change the shape of the cornea. Over time, the corneal implants may resorb via hydrolysis or enzymatic breakdown, negating the risks of inflammation, scarring, or foreign body response. The corneal implants may also employ drug coating(s) to promote tissue growth.
    Type: Application
    Filed: December 14, 2023
    Publication date: April 4, 2024
    Inventors: Desmond Christopher Adler, David Usher
  • Patent number: 11864990
    Abstract: Systems and methods employ bioresorbable corneal implants to treat corneal ectatic disorders and/or refractive errors. The corneal implants may be formed from a porous microstructure that can encourage the proliferation of endogenous keratocytes. As such, the corneal implants act as tissue scaffolds that promote tissue growth to increase the biomechanical stability and/or change the shape of the cornea. Over time, the corneal implants may resorb via hydrolysis or enzymatic breakdown, negating the risks of inflammation, scarring, or foreign body response. The corneal implants may also employ drug coating(s) to promote tissue growth.
    Type: Grant
    Filed: February 26, 2020
    Date of Patent: January 9, 2024
    Assignee: AVEDRO, INC.
    Inventors: Desmond Christopher Adler, David Usher
  • Publication number: 20230346601
    Abstract: A system for treating an eye includes a laser light source providing photoactivating light. The system includes a scanning system to receive the photoactivating light as a laser beam and to move the laser beam over a cornea treated with a cross-linking agent. The system includes a controller that provides control signal(s) to programmatically control the laser light source and the scanning system. The control signal(s) cause the laser beam to visit region(s) of the cornea more than once according to a scan pattern and expose the region(s) to the photoactivating light. The photoactivating light causes the cross-linking agent in the exposed region(s) to react with oxygen to generate cross-linking activity in the exposed region(s). The scan pattern causes a predetermined period of time to pass between visits by the laser beam to the exposed region(s), the predetermined period of time allowing oxygen in the exposed region(s) to replenish.
    Type: Application
    Filed: May 5, 2023
    Publication date: November 2, 2023
    Inventors: Desmond C. Adler, Mikhail Smirnov, David Usher, Behrouz Tavakol, Jason Hill, Jie Zhang, Amit Mukherjee, Alex Yildizyan
  • Patent number: 11642244
    Abstract: A system for treating an eye includes a laser light source providing photoactivating light. The system includes a scanning system to receive the photoactivating light as a laser beam and to move the laser beam over a cornea treated with a cross-linking agent. The system includes a controller that provides control signal(s) to programmatically control the laser light source and the scanning system. The control signal(s) cause the laser beam to visit region(s) of the cornea more than once according to a scan pattern and expose the region(s) to the photoactivating light. The photoactivating light causes the cross-linking agent in the exposed region(s) to react with oxygen to generate cross-linking activity in the exposed region(s). The scan pattern causes a predetermined period of time to pass between visits by the laser beam to the exposed region(s), the predetermined period of time allowing oxygen in the exposed region(s) to replenish.
    Type: Grant
    Filed: August 6, 2020
    Date of Patent: May 9, 2023
    Assignee: Avedro, Inc.
    Inventors: Desmond C. Adler, Mikhail Smirnov, David Usher, Behrouz Tavakol, Jason Hill, Jie Zhang, Amit Mukherjee, Alex Yildizyan
  • Publication number: 20230103346
    Abstract: In a corneal measurement system, an optical element focuses an excitation light to an area of corneal tissue at a selected depth. In response, a fluorescing agent applied to the cornea generates a fluorescence emission. An aperture of a pinhole structure selectively transmits the fluorescence emission from the area of corneal tissue at the selected depth. A detector captures the selected fluorescence emission transmitted by the aperture and communicates information relating to a measurement of the selected fluorescence emission captured by the detector. A controller receives the information from the detector and determines a measurement of the fluorescing agent in the area of corneal tissue at the selected depth. The system may include a scan mechanism that causes the optical element to scan the cornea at a plurality of depths, and the controller may determine a measurement of the fluorescing agent in the cornea as a function of depth.
    Type: Application
    Filed: December 9, 2022
    Publication date: April 6, 2023
    Inventors: Desmond Christopher Adler, Jun A. Zhang, Mikhail Z. Smirnov, Marc D. Friedman, David Usher, Grace Elizabeth Lytle, David C. Iannetta
  • Patent number: 11529050
    Abstract: In a corneal measurement system, an optical element focuses an excitation light to an area of corneal tissue at a selected depth. In response, a fluorescing agent applied to the cornea generates a fluorescence emission. An aperture of a pinhole structure selectively transmits the fluorescence emission from the area of corneal tissue at the selected depth. A detector captures the selected fluorescence emission transmitted by the aperture and communicates information relating to a measurement of the selected fluorescence emission captured by the detector. A controller receives the information from the detector and determines a measurement of the fluorescing agent in the area of corneal tissue at the selected depth. The system may include a scan mechanism that causes the optical element to scan the cornea at a plurality of depths, and the controller may determine a measurement of the fluorescing agent in the cornea as a function of depth.
    Type: Grant
    Filed: April 3, 2020
    Date of Patent: December 20, 2022
    Assignee: AVEDRO, INC.
    Inventors: Desmond Christopher Adler, Jun Zhang, Mikhail Z. Smirnov, Marc D. Friedman, David Usher, Grace Elizabeth Lytle, David C. Iannetta
  • Publication number: 20220284575
    Abstract: An automated process receives input tomography data and generates an optimized (customized) treatment pattern for an individual patient without relying on the physician's analysis and judgment. For example, a method for treating a cornea includes receiving tomographic data for a cornea. The method includes identifying a keratoconic defect in the cornea based on the tomographic data. The method includes segmenting the keratoconic defect into treatment zones based on predefined geometric parameters, wherein the treatment zones indicate where a cross-linking agent is to be applied on the cornea and photoactivated to treat the keratoconic defect.
    Type: Application
    Filed: March 8, 2022
    Publication date: September 8, 2022
    Inventors: David Usher, Mikhail Smirnov, Behrouz Tavakol, Grace Elizabeth Lytle
  • Publication number: 20220269650
    Abstract: A device, system and method for providing responses to queries is provided. a computing device provides, to a first device associated with a first account, one or more predetermined queries stored at one or more memories; receives, from the first device, responses to the predetermined queries; stores, at the memories, the responses associated with respective queries and the first account, the responses representative of an electronic virtual being engine associated with the first account; receives, from a second device, a query associated with the electronic virtual being engine; and responsive to determining a lack of correspondence between the one or more predetermined queries and the query: provides the query to the first device; and responsive to receiving a response to the query from the first device, stores, at the memories, the response associated with the query and the first account, the response to further represent the electronic virtual being engine.
    Type: Application
    Filed: February 14, 2022
    Publication date: August 25, 2022
    Inventor: David USHER
  • Publication number: 20220193439
    Abstract: An example antimicrobial treatment system includes an illumination system configured to deliver illumination that activates a photosensitizing agent applied to a cornea. The system also includes a controller configured to control the illumination system. The controller detects an ulcerative region on a cornea and causes the illumination system to deliver the illumination to activate the photosensitizing agent applied to the ulcerative region according to a set of parameters for treating the ulcerative region. The illumination is restricted to the ulcerative region, and activation of the photosensitizing agent in the ulcerative region generates an antimicrobial effect.
    Type: Application
    Filed: December 17, 2021
    Publication date: June 23, 2022
    Inventors: Desmond Christopher Adler, Jason Hill, David Usher, Mikhail Smirnov, Ahalya Viswanathan
  • Publication number: 20210369108
    Abstract: An example system for tracking motion of an eye during an eye treatment includes an image capture device configured to capture a plurality of images of an eye. The system includes controller(s) including processor(s) that receive the plurality of images from the image capture device. The processor(s) implement a plurality of trackers. Each tracker is configured to detect a respective feature in the plurality of images and provide, based on the respective feature, a respective set of data relating to motion of the eye. The respective features detected by the plurality of trackers are orthogonal relative to each other and the respective sets of data provided by the plurality of trackers are independent of each other. The processor(s) coalesce the sets of data from the plurality of trackers and determine an indicator of the motion of the eye based on the coalesced sets of data.
    Type: Application
    Filed: September 19, 2019
    Publication date: December 2, 2021
    Inventors: Amit Mukherjee, Vladimir Ruzhitsky, David Usher
  • Publication number: 20210038428
    Abstract: A system for treating an eye includes a laser light source providing photoactivating light. The system includes a scanning system to receive the photoactivating light as a laser beam and to move the laser beam over a cornea treated with a cross-linking agent. The system includes a controller that provides control signal(s) to programmatically control the laser light source and the scanning system. The control signal(s) cause the laser beam to visit region(s) of the cornea more than once according to a scan pattern and expose the region(s) to the photoactivating light. The photoactivating light causes the cross-linking agent in the exposed region(s) to react with oxygen to generate cross-linking activity in the exposed region(s). The scan pattern causes a predetermined period of time to pass between visits by the laser beam to the exposed region(s), the predetermined period of time allowing oxygen in the exposed region(s) to replenish.
    Type: Application
    Filed: August 6, 2020
    Publication date: February 11, 2021
    Inventors: Desmond C. Adler, Mikhail Smirnov, David Usher, Behrouz Tavakol, Jason Hill, Jie Zhang, Amit Mukherjee, Alex Yildizyan
  • Publication number: 20200397613
    Abstract: A corneal cross-linking system includes a light source configured to emit a photoactivating light. The system includes a spatial light modulator configured to receive the photoactivating light from the light source and provide a pixelated illumination. The spatial light modulator defines a maximum area for the pixelated illumination. The system includes a controller configured to cause the spatial light modulator to project a first pixelated illumination onto the cornea to photoactivate a cross-linking agent applied to a treatment area. The first pixelated illumination has an area that is smaller than the maximum area defined by the spatial light modulator. The controller is configured to determine movement of the cornea. In response to the movement, the controller controls the spatial light modulator to project a second pixelated illumination to the treatment area based on a translation and/or transformation of the first pixelated illumination to continue photoactivating the cross-linking agent.
    Type: Application
    Filed: March 5, 2019
    Publication date: December 24, 2020
    Inventors: Desmond Christopher Adler, David Usher, Mikhail Smirnov
  • Publication number: 20200268505
    Abstract: Systems and methods employ bioresorbable corneal implants to treat corneal ectatic disorders and/or refractive errors. The corneal implants may be formed from a porous microstructure that can encourage the proliferation of endogenous keratocytes. As such, the corneal implants act as tissue scaffolds that promote tissue growth to increase the biomechanical stability and/or change the shape of the cornea. Over time, the corneal implants may resorb via hydrolysis or enzymatic breakdown, negating the risks of inflammation, scarring, or foreign body response. The corneal implants may also employ drug coating(s) to promote tissue growth.
    Type: Application
    Filed: February 26, 2020
    Publication date: August 27, 2020
    Inventors: Desmond Christopher Adler, David Usher
  • Publication number: 20200229692
    Abstract: In a corneal measurement system, an optical element focuses an excitation light to an area of corneal tissue at a selected depth. In response, a fluorescing agent applied to the cornea generates a fluorescence emission. An aperture of a pinhole structure selectively transmits the fluorescence emission from the area of corneal tissue at the selected depth. A detector captures the selected fluorescence emission transmitted by the aperture and communicates information relating to a measurement of the selected fluorescence emission captured by the detector. A controller receives the information from the detector and determines a measurement of the fluorescing agent in the area of corneal tissue at the selected depth. The system may include a scan mechanism that causes the optical element to scan the cornea at a plurality of depths, and the controller may determine a measurement of the fluorescing agent in the cornea as a function of depth.
    Type: Application
    Filed: April 3, 2020
    Publication date: July 23, 2020
    Inventors: Desmond Christopher Adler, Jun Zhang, Mikhail Z. Smirnov, Marc D. Friedman, David Usher, Grace Elizabeth Lytle, David C. Iannetta
  • Patent number: 10631726
    Abstract: In a corneal measurement system, an optical element focuses an excitation light to an area of corneal tissue at a selected depth. In response, a fluorescing agent applied to the cornea generates a fluorescence emission. An aperture of a pinhole structure selectively transmits the fluorescence emission from the area of corneal tissue at the selected depth. A detector captures the selected fluorescence emission transmitted by the aperture and communicates information relating to a measurement of the selected fluorescence emission captured by the detector. A controller receives the information from the detector and determines a measurement of the fluorescing agent in the area of corneal tissue at the selected depth. The system may include a scan mechanism that causes the optical element to scan the cornea at a plurality of depths, and the controller may determine a measurement of the fluorescing agent in the cornea as a function of depth.
    Type: Grant
    Filed: January 11, 2018
    Date of Patent: April 28, 2020
    Assignee: Avedro, Inc.
    Inventors: Desmond Christopher Adler, Jun Zhang, Mikhail Z. Smirnov, Marc D. Friedman, David Usher, Grace Elizabeth Lytle, David C. Iannetta
  • Publication number: 20200107953
    Abstract: A system for treating an eye includes a light source configured to provide photoactivating light that photoactivates a cross-linking agent applied to a cornea. The system includes one or more optical elements configured to receive the photoactivating light and produce a beam that defines a spot of the photoactivating light. The system includes a scanning system configured to receive the beam of the photoactivating light and to scan the spot of the photoactivating light along a first axis and a second axis to form a scan pattern on the cornea to generate cross-linking activity.
    Type: Application
    Filed: October 9, 2019
    Publication date: April 9, 2020
    Inventors: Desmond C. Adler, David Usher, Alex Yildizyan
  • Patent number: 10137239
    Abstract: Devices and approaches for monitoring time based photo active agent delivery or photo active marker presence in an eye. A monitoring system is provided for measuring the presence of a photo active marker by illuminating the eye so as to excite the photo-active marker and then observing characteristic emission from the photo active marker. Example systems incorporate Scheimpflug optical systems or slit lamp optical systems to observe cross sectional images of an eye to monitor instantaneous distribution, diffusion pattern, and rate of uptake of a photo active agent applied to an eye. Systems and methods further allow for utilizing the monitored distribution of photo active agent in the eye as feedback for a cross-linking system.
    Type: Grant
    Filed: April 27, 2015
    Date of Patent: November 27, 2018
    Assignee: Avedro, Inc.
    Inventors: Marc D. Friedman, Pavel Kamaev, David Muller, Radha Pertaub, Ronald Scharf, Evan Sherr, David Usher
  • Publication number: 20180206719
    Abstract: In a corneal measurement system, an optical element focuses an excitation light to an area of corneal tissue at a selected depth. In response, a fluorescing agent applied to the cornea generates a fluorescence emission. An aperture of a pinhole structure selectively transmits the fluorescence emission from the area of corneal tissue at the selected depth. A detector captures the selected fluorescence emission transmitted by the aperture and communicates information relating to a measurement of the selected fluorescence emission captured by the detector. A controller receives the information from the detector and determines a measurement of the fluorescing agent in the area of corneal tissue at the selected depth. The system may include a scan mechanism that causes the optical element to scan the cornea at a plurality of depths, and the controller may determine a measurement of the fluorescing agent in the cornea as a function of depth.
    Type: Application
    Filed: January 11, 2018
    Publication date: July 26, 2018
    Inventors: Desmond Christopher Adler, Jun Zhang, Mikhail Z. Smirnov, Marc D. Friedman, David Usher, Grace Elizabeth Lytle, David C. Iannetta
  • Publication number: 20150265762
    Abstract: Devices and approaches for monitoring time based photo active agent delivery or photo active marker presence in an eye. A monitoring system is provided for measuring the presence of a photo active marker by illuminating the eye so as to excite the photo-active marker and then observing characteristic emission from the photo active marker. Example systems incorporate Scheimpflug optical systems or slit lamp optical systems to observe cross sectional images of an eye to monitor instantaneous distribution, diffusion pattern, and rate of uptake of a photo active agent applied to an eye. Systems and methods further allow for utilizing the monitored distribution of photo active agent in the eye as feedback for a cross-linking system.
    Type: Application
    Filed: April 27, 2015
    Publication date: September 24, 2015
    Inventors: Marc D. Friedman, Pavel Kamaev, David Muller, Radha Pertaub, Ronald Scharf, Evan Sherr, David Usher
  • Patent number: 9020580
    Abstract: Devices and approaches for monitoring time based photo active agent delivery or photo active marker presence in an eye. A monitoring system is provided for measuring the presence of a photo active marker by illuminating the eye so as to excite the photo-active marker and then observing characteristic emission from the photo active marker. Example systems incorporate Scheimpflug optical systems or slit lamp optical systems to observe cross sectional images of an eye to monitor instantaneous distribution, diffusion pattern, and rate of uptake of a photo active agent applied to an eye. Systems and methods further allow for utilizing the monitored distribution of photo active agent in the eye as feedback for a cross-linking system.
    Type: Grant
    Filed: June 4, 2012
    Date of Patent: April 28, 2015
    Assignee: Avedro, Inc.
    Inventors: Marc D. Friedman, Pavel Kamaev, David Muller, Radha Pertaub, Ronald Scharf, Evan Sherr, David Usher