Patents by Inventor Christopher Nguan

Christopher Nguan 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: 11357226
    Abstract: Provided are transplant preservation solutions comprising a polyglycerol wherein the polyglycerol is of a molecular weight between about 0.15 kDa and about 3.99 kDa, methods and uses thereof as well as kits providing said transplant preservation solutions.
    Type: Grant
    Filed: January 8, 2020
    Date of Patent: June 14, 2022
    Inventors: Jayachandran Kizhakkedathu, Caigan Du, Donald Brooks, Christopher Nguan
  • Publication number: 20200138013
    Abstract: Provided are transplant preservation solutions comprising a polyglycerol wherein the polyglycerol is of a molecular weight between about 0.15 kDa and about 3.99 kDa, methods and uses thereof as well as kits providing said transplant preservation solutions.
    Type: Application
    Filed: January 8, 2020
    Publication date: May 7, 2020
    Inventors: Jayachandran KIZHAKKEDATHU, Caigan DU, Donald BROOKS, Christopher NGUAN
  • Patent number: 10512508
    Abstract: An imagery system includes: a camera having a field of view; a light source including a source of structured light, the light source movable relative to the camera; and at least one processor. The at least one processor is programmed to determine, at least, estimated locations of points on a surface exposed to the structured light according to image data received from the field of view of the camera. The light source may include at least one fiducial marker, and the at least one processor may be programmed to determine the estimated position of the source of structured light according to the at least one fiducial marker in the image data. Also, the camera may be a stereoscopic camera.
    Type: Grant
    Filed: June 15, 2016
    Date of Patent: December 24, 2019
    Assignee: The University of British Columbia
    Inventors: Robert Rohling, Philip Edgcumbe, Christopher Nguan
  • Publication number: 20160360954
    Abstract: An imagery system includes: a camera having a field of view; a light source including a source of structured light, the light source movable relative to the camera; and at least one processor. The at least one processor is programmed to determine, at least, estimated locations of points on a surface exposed to the structured light according to image data received from the field of view of the camera. The light source may include at least one fiducial marker, and the at least one processor may be programmed to determine the estimated position of the source of structured light according to the at least one fiducial marker in the image data. Also, the camera may be a stereoscopic camera.
    Type: Application
    Filed: June 15, 2016
    Publication date: December 15, 2016
    Inventors: Robert Rohling, Philip Edgcumbe, Christopher Nguan
  • Publication number: 20160295856
    Abstract: Provided are transplant preservation solutions comprising a polyglycerol wherein the polyglycerol is of a molecular weight between about 0.15 kDa and about 3.99 kDa, methods and uses thereof as well as kits providing said transplant preservation solutions.
    Type: Application
    Filed: November 21, 2014
    Publication date: October 13, 2016
    Applicant: UNIVERSITY OF BRITISH COLUMBIA
    Inventors: Jayachandran KIZHAKKEDATHU, Caigan DU, Donald BROOKS, Christopher NGUAN
  • Publication number: 20150087975
    Abstract: A method of monitoring the cryoablation of a target volume of tissue with ultrasound elastography, the method comprising acquiring a first elastography image encompassing said target volume of tissue, performing at least one cycle of freezing and thawing of tissue encompassed in said target volume, acquiring a second elastography image encompassing said target volume, and comparing said first and said second elastography images over said target volume. The elastography provides either relative or quantitative measurements of tissue elasticity. The elastography maps of tissue elasticity, before and after cryoablation of one region, can guide the cryoablation of another region. The use of elastography provided feedback to the operator to achieve effective treatment with cryoblation over a planned target.
    Type: Application
    Filed: September 24, 2013
    Publication date: March 26, 2015
    Applicant: UNIVERSITY OF BRITISH COLUMBIA
    Inventors: Septimiu Salcudean, Caitlin Schneider, Diego Dall'Alba, Robert Rohling, Christopher Nguan
  • Publication number: 20110152895
    Abstract: This invention is a surgical clamp for the purpose of occluding the kidney or other organ and thereby obtaining a bloodless surgical field, while allowing the majority of the organ to remain normally perfused. Previous approaches are limited in ability to provide sufficient clamping force without damaging the oran. The invention comprises a first and second jaw, wherein the proximal ends of the two jaws, and the distal ends of the two jaws are connected by a strap, such that applying tension to the strap results in moving the relative positions of the jaws in a substantially parallel motion, which provide a clamping force to the organ. The jaws can be attached with a flexibly joint to a hollow shaft, such that a cable inside the shaft can be used to apply tension to the strap while maintaining the ability to pivot the jaws relative to the shaft.
    Type: Application
    Filed: December 19, 2010
    Publication date: June 23, 2011
    Inventors: Colin Nyuli, Robert Nicholas Rohling, Septimiu Edmund Salcudean, Christopher Nguan