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).
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Patent number: 11857298Abstract: 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: GrantFiled: September 4, 2020Date of Patent: January 2, 2024Assignee: Apple Inc.Inventors: Nicholas P. Allec, Albert E. Cerussi, Maximillian C. Bruggeman, Xiyu Duan, Ueyn L. Block
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Publication number: 20230404419Abstract: 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: ApplicationFiled: May 12, 2023Publication date: December 21, 2023Inventors: Nicholas P. Allec, Albert E. Cerussi, Maximillian C. Bruggeman, Xiyu Duan, Ueyn L. Block
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Patent number: 11819310Abstract: 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: GrantFiled: July 24, 2018Date of Patent: November 21, 2023Assignee: THE REGENTS OF THE UNIVERSITY OF MICHIGANInventors: Thomas D. Wang, Xiyu Duan, Haijun Li
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Publication number: 20220369933Abstract: 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: ApplicationFiled: July 24, 2018Publication date: November 24, 2022Inventors: Thomas D. Wang, Xiyu Duan, Haijun LI
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Publication number: 20220160232Abstract: 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: ApplicationFiled: March 18, 2020Publication date: May 26, 2022Inventors: Thomas D. Wang, Xiyu Duan, Gaoming Li, Haijun Li
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Publication number: 20220155579Abstract: 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: ApplicationFiled: March 18, 2020Publication date: May 19, 2022Inventors: Thomas D. Wang, Haijun Li, Xiyu Duan, Gaoming Li
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Patent number: 11215805Abstract: 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: GrantFiled: December 4, 2017Date of Patent: January 4, 2022Assignee: THE REGENTS OF THE UNIVERSITY OF MICHIGANInventors: Kenn Oldham, Jongsoo Choi, Xiyu Duan, Thomas D. Wang, Haijun Li
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Publication number: 20210383512Abstract: 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: ApplicationFiled: October 25, 2019Publication date: December 9, 2021Inventors: Kenn Oldham, Thomas D. Wang, Mayur Bhushan Birla, Xiyu Duan
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Patent number: 10904492Abstract: 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: GrantFiled: July 29, 2019Date of Patent: January 26, 2021Assignee: Stryker CorporationInventors: Richard A. Derenne, Richard Thomas DeLuca, Jason James Wroblewski, Sanjay Dhall, Xiyu Duan, Vishal P. Lowalekar
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Patent number: 10642027Abstract: 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: GrantFiled: December 8, 2016Date of Patent: May 5, 2020Assignee: THE REGENTS OF THE UNIVERSITY OF MICHIGANInventors: Thomas D. Wang, Haijun Li, Xiyu Duan, Zhen Qiu, Kenn Oldham
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Publication number: 20200096753Abstract: 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: ApplicationFiled: December 4, 2017Publication date: March 26, 2020Inventors: Kenn Oldham, Jongsoo Choi, Xiyu Duan, Thomas D. Wang, Haijun Li
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Publication number: 20190349554Abstract: 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: ApplicationFiled: July 29, 2019Publication date: November 14, 2019Inventors: Richard A. Derenne, Richard Thomas DeLuca, Jason James Wroblewski, Sanjay Dhall, Xiyu Duan, Vishal P. Lowalekar
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Patent number: 10368039Abstract: 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: GrantFiled: March 20, 2018Date of Patent: July 30, 2019Assignee: Stryker CorporationInventors: Richard A. Derenne, Richard Thomas DeLuca, Jason James Wroblewski, Sanjay Dhall, Xiyu Duan, Vishal P. Lowalekar
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Publication number: 20180356629Abstract: 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: ApplicationFiled: December 8, 2016Publication date: December 13, 2018Inventors: Thomas D. Wang, Haijun Li, Xiyu Duan, Zhen Qiu, Ken Oldham
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Publication number: 20180227547Abstract: 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: ApplicationFiled: March 20, 2018Publication date: August 9, 2018Inventors: Richard A. Derenne, Richard Thomas DeLuca, Jason James Wroblewski, Sanjay Dhall, Xiyu Duan, Vishal P. Lowalekar
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Publication number: 20160065909Abstract: 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: ApplicationFiled: November 6, 2015Publication date: March 3, 2016Inventors: Richard A. Derenne, Richard Thomas DeLuca, Jason James Wroblewski, Sanjay Dhall, Xiyu Duan, Vishal P. Lowalekar
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Patent number: 9204823Abstract: 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: GrantFiled: September 23, 2011Date of Patent: December 8, 2015Assignee: Stryker CorporationInventors: Richard A. Derenne, Richard T. DeLuca, Jason J. Wroblewski, Sanjay Dhall, Xiyu Duan, Vishal P. Lowalekar
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Publication number: 20120075464Abstract: 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: ApplicationFiled: September 23, 2011Publication date: March 29, 2012Applicant: STRYKER CORPORATIONInventors: Richard A. Derenne, Richard T. DeLuca, Jason J. Wroblewski, Sanjay Shall, Xiyu Duan, Vishal P. Lowalekar