Patents by Inventor Xiyu Duan

Xiyu Duan 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).

  • Patent number: 11857298
    Abstract: A wearable device includes a housing; a wrist band attached to the housing; first and second emitters positioned within the housing and configured to respectively emit, through a back of the housing, a first beam of electromagnetic radiation having a first infrared (IR) wavelength and a second beam of electromagnetic radiation having a second IR wavelength. The second IR wavelength is different from the first IR wavelength. The wearable device also includes a photodetector positioned within the housing and filtered to detect a set of electromagnetic radiation wavelengths including the first IR wavelength and the second IR wavelength; and a matter differentiation circuit configured to indicate, at least partly in response to signals indicating amounts of the first IR wavelength and the second IR wavelength received by the photodetector, whether the back of the housing is likely proximate to human tissue.
    Type: Grant
    Filed: September 4, 2020
    Date of Patent: January 2, 2024
    Assignee: Apple Inc.
    Inventors: Nicholas P. Allec, Albert E. Cerussi, Maximillian C. Bruggeman, Xiyu Duan, Ueyn L. Block
  • Publication number: 20230404419
    Abstract: A wearable device includes a housing; a wrist band attached to the housing; first and second emitters positioned within the housing and configured to respectively emit, through a back of the housing, a first beam of electromagnetic radiation having a first infrared (IR) wavelength and a second beam of electromagnetic radiation having a second IR wavelength. The second IR wavelength is different from the first IR wavelength. The wearable device also includes a photodetector positioned within the housing and filtered to detect a set of electromagnetic radiation wavelengths including the first IR wavelength and the second IR wavelength; and a matter differentiation circuit configured to indicate, at least partly in response to signals indicating amounts of the first IR wavelength and the second IR wavelength received by the photodetector, whether the back of the housing is likely proximate to human tissue.
    Type: Application
    Filed: May 12, 2023
    Publication date: December 21, 2023
    Inventors: Nicholas P. Allec, Albert E. Cerussi, Maximillian C. Bruggeman, Xiyu Duan, Ueyn L. Block
  • Patent number: 11819310
    Abstract: An optical probe assembly as a confocal endomicroscope includes an optical focusing stage that focuses an output beam onto a sample and a mirror scanning stage that is movable for scanning the output beam in both a lateral two dimensional plane and an axial direction, using a side-view configuration. The side-view configuration allows for output beam illumination and fluorescent imaging of the sample with greater imaging resolution and improved access to hard to reach tissue within a subject.
    Type: Grant
    Filed: July 24, 2018
    Date of Patent: November 21, 2023
    Assignee: THE REGENTS OF THE UNIVERSITY OF MICHIGAN
    Inventors: Thomas D. Wang, Xiyu Duan, Haijun Li
  • Publication number: 20220369933
    Abstract: An optical probe assembly as a confocal endomicroscope includes an optical focusing stage that focuses an output beam onto a sample and a mirror scanning stage that is movable for scanning the output beam in both a lateral two dimensional plane and an axial direction, using a side-view configuration. The side-view configuration allows for output beam illumination and fluorescent imaging of the sample with greater imaging resolution and improved access to hard to reach tissue within a subject.
    Type: Application
    Filed: July 24, 2018
    Publication date: November 24, 2022
    Inventors: Thomas D. Wang, Xiyu Duan, Haijun LI
  • Publication number: 20220160232
    Abstract: A compact single-axis confocal endomicroscope is provided, capable of complying within 2.8 mm diameter endoscope space requirements. The single-axis confocal endomicroscope uses a folded path design achieved between a fixed mirror and a lateral plane scanning mirror thereby producing a high numerical aperture that allows for diffraction-limited resolution with sub-surface depths. The scanning mirror is formed on a fixed-position, scanning MEMS assembly and has a central aperture that allows for illumination beam expansion in the folded path design. A series of spacers are used to retain beam focusing optical elements in fixed positioned relative to the scanning MEMS assembly for coupling with a single mode fiber.
    Type: Application
    Filed: March 18, 2020
    Publication date: May 26, 2022
    Inventors: Thomas D. Wang, Xiyu Duan, Gaoming Li, Haijun Li
  • Publication number: 20220155579
    Abstract: A compact single-axis confocal endomicroscope is provided, capable of complying with 2.8 mm diameter endoscope space requirements. The single-axis confocal endomicroscope uses a folded path design achieved between a fixed mirror and a lateral plane scanning mirror thereby producing high numerical apertures that allow for diffraction-limited resolution in sub-surface scanning. The scanning mirror has a central aperture that allows for illumination beam expansion in the folded path design.
    Type: Application
    Filed: March 18, 2020
    Publication date: May 19, 2022
    Inventors: Thomas D. Wang, Haijun Li, Xiyu Duan, Gaoming Li
  • Patent number: 11215805
    Abstract: A multi-photon optical probe includes a probe housing, a lateral scanning stage coupled to a lateral mirror assembly and a remote axial scanning stage coupled to an axial mirror assembly. The lateral scanning stage is adapted to scan output laser energy over a planar scan area of the sample by moving the lateral mirror assembly. The axial scanning stage is adapted to scan the output laser energy over a vertical depth range of the sample, which, combined with the planar scan area, forms a 3-dimensional volume. A controller operates in conjunction with a number of remote actuating legs coupled to the axial mirror assembly in order to provide level imaging plane which in turn provides for a clear scanned image.
    Type: Grant
    Filed: December 4, 2017
    Date of Patent: January 4, 2022
    Assignee: THE REGENTS OF THE UNIVERSITY OF MICHIGAN
    Inventors: Kenn Oldham, Jongsoo Choi, Xiyu Duan, Thomas D. Wang, Haijun Li
  • Publication number: 20210383512
    Abstract: A computer-implemented method includes receiving a raw data set representing an image of a sample, identifying a first set of extremum by analyzing the raw data set using a metric algorithm, identifying a second set of extremum by analyzing the first set of extremum, and generating, based on the second set of extremum, a reconstructed image of the sample. A phase correcting scanner includes one or more processors, one or more scanner adapted to sequentially sample an object to generate a vector of raw data representing the object in a Lissajous pattern, and memory storing instructions that, when executed by the one or more processors, cause the computing system to receive the vector of raw data, identify a first set of extremum by analyzing the raw data set using a metric algorithm, and identify a second set of extremum by analyzing the first set of extremum.
    Type: Application
    Filed: October 25, 2019
    Publication date: December 9, 2021
    Inventors: Kenn Oldham, Thomas D. Wang, Mayur Bhushan Birla, Xiyu Duan
  • Patent number: 10904492
    Abstract: An asset tracking system includes a camera adapted to capture images and output signals representative of the images. The camera may include one or more depth sensors that detect distances between the depth sensor and objects positioned within the field of view of the one or more cameras. A computer device processes the image signals and or depth signals from cameras and determines any one or more of the following: (a) whether a patient care protocol has been properly followed; (b) what condition a patient is in; (c) whether an infection control protocol has been properly followed; and (d) whether steps have been taken to reduce the risk of a patient from falling. Alerts may be issued if any conditions of importance are detected.
    Type: Grant
    Filed: July 29, 2019
    Date of Patent: January 26, 2021
    Assignee: Stryker Corporation
    Inventors: Richard A. Derenne, Richard Thomas DeLuca, Jason James Wroblewski, Sanjay Dhall, Xiyu Duan, Vishal P. Lowalekar
  • Patent number: 10642027
    Abstract: An optical probe scanning assembly for use in an optical probe includes a mirror assembly that focuses an illumination beam path and a collection beam path at a region of interest within the sample. The illumination beam and the collection beam overlap to form a confocal beam region. The mirror assembly is movable in an x-axis direction and in a y-axis direction to scan the confocal beam region within the sample. The scanning assembly further includes a scanning suspension system including a gimbal assembly connected to the mirror assembly to allow the mirror assembly to rotate about one or more axes. The mirror is thereby adapted to scan along at least two different orthogonal planes, one of which extends vertically into the sample.
    Type: Grant
    Filed: December 8, 2016
    Date of Patent: May 5, 2020
    Assignee: THE REGENTS OF THE UNIVERSITY OF MICHIGAN
    Inventors: Thomas D. Wang, Haijun Li, Xiyu Duan, Zhen Qiu, Kenn Oldham
  • Publication number: 20200096753
    Abstract: A multi-photon optical probe includes a probe housing, a lateral scanning stage coupled to a lateral mirror assembly and a remote axial scanning stage coupled to an axial mirror assembly. The lateral scanning stage is adapted to scan output laser energy over a planar scan area of the sample by moving the lateral mirror assembly. The axial scanning stage is adapted to scan the output laser energy over a vertical depth range of the sample, which, combined with the planar scan area, forms a 3-dimensional volume. A controller operates in conjunction with a number of remote actuating legs coupled to the axial mirror assembly in order to provide level imaging plane which in turn provides for a clear scanned image.
    Type: Application
    Filed: December 4, 2017
    Publication date: March 26, 2020
    Inventors: Kenn Oldham, Jongsoo Choi, Xiyu Duan, Thomas D. Wang, Haijun Li
  • Publication number: 20190349554
    Abstract: An asset tracking system includes a camera adapted to capture images and output signals representative of the images. The camera may include one or more depth sensors that detect distances between the depth sensor and objects positioned within the field of view of the one or more cameras. A computer device processes the image signals and or depth signals from cameras and determines any one or more of the following: (a) whether a patient care protocol has been properly followed; (b) what condition a patient is in; (c) whether an infection control protocol has been properly followed; and (d) whether steps have been taken to reduce the risk of a patient from falling. Alerts may be issued if any conditions of importance are detected.
    Type: Application
    Filed: July 29, 2019
    Publication date: November 14, 2019
    Inventors: Richard A. Derenne, Richard Thomas DeLuca, Jason James Wroblewski, Sanjay Dhall, Xiyu Duan, Vishal P. Lowalekar
  • Patent number: 10368039
    Abstract: An asset tracking system includes a camera adapted to capture images and output signals representative of the images. The camera may include one or more depth sensors that detect distances between the depth sensor and objects positioned within the field of view of the one or more cameras. A computer device processes the image signals and or depth signals from cameras and determines any one or more of the following: (a) whether a patient care protocol has been properly followed; (b) what condition a patient is in; (c) whether an infection control protocol has been properly followed; and (d) whether steps have been taken to reduce the risk of a patient from falling. Alerts may be issued if any conditions of importance are detected.
    Type: Grant
    Filed: March 20, 2018
    Date of Patent: July 30, 2019
    Assignee: Stryker Corporation
    Inventors: Richard A. Derenne, Richard Thomas DeLuca, Jason James Wroblewski, Sanjay Dhall, Xiyu Duan, Vishal P. Lowalekar
  • Publication number: 20180356629
    Abstract: An optical probe scanning assembly for use in an optical probe includes a mirror assembly that focuses an illumination beam path and a collection beam path at a region of interest within the sample. The illumination beam and the collection beam overlap to form a confocal beam region. The mirror assembly is movable in an x-axis direction and in a y-axis direction to scan the confocal beam region within the sample. The scanning assembly further includes a scanning suspension system including a gimbal assembly connected to the mirror assembly to allow the mirror assembly to rotate about one or more axes. The mirror is thereby adapted to scan along at least two different orthogonal planes, one of which extends vertically into the sample.
    Type: Application
    Filed: December 8, 2016
    Publication date: December 13, 2018
    Inventors: Thomas D. Wang, Haijun Li, Xiyu Duan, Zhen Qiu, Ken Oldham
  • Publication number: 20180227547
    Abstract: An asset tracking system includes a camera adapted to capture images and output signals representative of the images. The camera may include one or more depth sensors that detect distances between the depth sensor and objects positioned within the field of view of the one or more cameras. A computer device processes the image signals and or depth signals from cameras and determines any one or more of the following: (a) whether a patient care protocol has been properly followed; (b) what condition a patient is in; (c) whether an infection control protocol has been properly followed; and (d) whether steps have been taken to reduce the risk of a patient from falling. Alerts may be issued if any conditions of importance are detected.
    Type: Application
    Filed: March 20, 2018
    Publication date: August 9, 2018
    Inventors: Richard A. Derenne, Richard Thomas DeLuca, Jason James Wroblewski, Sanjay Dhall, Xiyu Duan, Vishal P. Lowalekar
  • Publication number: 20160065909
    Abstract: A asset tracking system includes a camera adapted to capture images and output signals representative of the images. The camera may include one or more depth sensors that detect distances between the depth sensor and objects positioned within the field of view of the one or more cameras. A computer device processes the image signals and or depth signals from cameras and determines any one or more of the following: (a) whether a patient care protocol has been properly followed; (b) what condition a patient is in; (c) whether an infection control protocol has been properly followed; and (d) whether steps have been taken to reduce the risk of a patient from falling. Alerts may be issued if any conditions of importance are detected.
    Type: Application
    Filed: November 6, 2015
    Publication date: March 3, 2016
    Inventors: Richard A. Derenne, Richard Thomas DeLuca, Jason James Wroblewski, Sanjay Dhall, Xiyu Duan, Vishal P. Lowalekar
  • Patent number: 9204823
    Abstract: A monitoring system includes a camera adapted to capture images and output signals representative of the images. The camera may include one or more depth sensors that detect distances between the depth sensor and objects positioned within the field of view of the one or more cameras. A computer device processes the image signals and or depth signals from cameras and determines any one or more of the following: (a) whether a patient care protocol has been properly followed; (b) what condition a patient is in; (c) whether an infection control protocol has been properly followed; and (d) whether steps have been taken to reduce the risk of a patient from falling. Alerts may be issued if any conditions of importance are detected.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: December 8, 2015
    Assignee: Stryker Corporation
    Inventors: Richard A. Derenne, Richard T. DeLuca, Jason J. Wroblewski, Sanjay Dhall, Xiyu Duan, Vishal P. Lowalekar
  • Publication number: 20120075464
    Abstract: A monitoring system includes a camera adapted to capture images and output signals representative of the images. The camera may include one or more depth sensors that detect distances between the depth sensor and objects positioned within the field of view of the one or more cameras. A computer device processes the image signals and or depth signals from cameras and determines any one or more of the following: (a) whether a patient care protocol has been properly followed; (b) what condition a patient is in; (c) whether an infection control protocol has been properly followed; and (d) whether steps have been taken to reduce the risk of a patient from falling. Alerts may be issued if any conditions of importance are detected.
    Type: Application
    Filed: September 23, 2011
    Publication date: March 29, 2012
    Applicant: STRYKER CORPORATION
    Inventors: Richard A. Derenne, Richard T. DeLuca, Jason J. Wroblewski, Sanjay Shall, Xiyu Duan, Vishal P. Lowalekar