Patents by Inventor Shamira Perera

Shamira Perera 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: 20200390600
    Abstract: A surgical tool for shearing tissue at a target surgical site, the surgical tool comprising a cannula assembly with a distal end and a proximal end, a cannula opening into the lumen of the cannula at the distal end, a cutting device coupled to the distal end and within the cannula opening, and an axial ball joint coupled to the proximal end of the cannula assembly, that when rotated, causes the cutting device at the distal end to rotate about a longitudinal axis passing axially through the lumen of the cannula assembly, so as to shear a portion of tissue at a target surgical site.
    Type: Application
    Filed: February 15, 2019
    Publication date: December 17, 2020
    Inventors: Shamira PERERA, Michael BELKIN, Alvin KOK
  • Publication number: 20170358077
    Abstract: A method and apparatus for aligning a two-dimensional eye image with a predefined axis by rotation at a rotation angle are disclosed, the method comprising deriving the rotation angle and a de-noised image, which minimises a cost function comprising (i) a complexity measure of the de-noised image and (ii) magnitude of a noise image obtained by rotating the first image by the rotation angle and subtracting the de-noised image.
    Type: Application
    Filed: December 23, 2015
    Publication date: December 14, 2017
    Applicants: AGENCY FOR SCIENCE, TECHNOLOGY AND RESEARCH, SINGAPORE HEALTH SERVICES PTE LTD
    Inventors: Yanwu XU, Jiang LIU, Lixin DUAN, Wing Kee Damon WONG, Tin AUNG, Baskaran MANI, Shamira PERERA
  • Patent number: 9782254
    Abstract: A device 100 for delivering intraocular lens into an incision on an eye of a patient comprises a tubular member 130 defined by a hollow elongate passageway 131, a front 132 and a back through opening 133 of the passageway 131; a secured nozzle 150 having an expanded base 152, which is mounted to the front through opening 132 of the tubular member 130, tapering towards a pointed end 153 fashioned to be inserted into the incision, the secured nozzle 150 enclosing a lumen 154 substantially tapered from the base 152 to the pointed end 153 and aligned with the passageway 131 that the lens is disposed within the lumen 154 to be readily delivered; an elongate probe 110, at least partially housed within the passageway 131, having a bifurcated tip 115 which is configured to telescopically slide out from the pointed end 153 of the secured nozzle 150 pushing the disposed lens into the eye; and a plunger assembly 120 having a shaft 126 inserted into and moveable within the passageway 131 to anteriorly engage with the pro
    Type: Grant
    Filed: February 21, 2014
    Date of Patent: October 10, 2017
    Assignee: SINGAPORE HEALTH SERVICES PTE LTD
    Inventor: Shamira Perera
  • Patent number: 9501823
    Abstract: A method is proposed for analyzing an optical coherence tomography (OCT) image of the anterior segment (AS) of a subject's eye. A region of interest is defined which is a region of the image containing the junction of the cornea and iris, and an estimated position the junction within the region of interest is derived. Using this a second region of the image is obtained, which is a part of the image containing the estimated position of the junction. Features of the second region are obtained, and those features are input to an adaptive model to generate data characterizing the junction.
    Type: Grant
    Filed: August 1, 2013
    Date of Patent: November 22, 2016
    Assignees: Agency for Science, Technology and Research, Singapore Health Services Pte Ltd
    Inventors: Yanwu Xu, Jiang Liu, Wing Kee Damon Wong, Beng Hai Lee, Tin Aung, Baskaran Mani, Shamira Perera
  • Publication number: 20160000556
    Abstract: A device 100 for delivering intraocular lens into an incision on an eye of a patient comprises a tubular member 130 defined by a hollow elongate passageway 131, a front 132 and a back through opening 133 of the passageway 131; a secured nozzle 150 having an expanded base 152, which is mounted to the front through opening 132 of the tubular member 130, tapering towards a pointed end 153 fashioned to be inserted into the incision, the secured nozzle 150 enclosing a lumen 154 substantially tapered from the base 152 to the pointed end 153 and aligned with the passageway 131 that the lens is disposed within the lumen 154 to be readily delivered; an elongate probe 110, at least partially housed within the passageway 131, having a bifurcated tip 115 which is configured to telescopically slide out from the pointed end 153 of the secured nozzle 150 pushing the disposed lens into the eye; and a plunger assembly 120 having a shaft 126 inserted into and moveable within the passageway 131 to anteriorly engage with the pro
    Type: Application
    Filed: February 21, 2014
    Publication date: January 7, 2016
    Inventor: Shamira Perera
  • Publication number: 20150161785
    Abstract: A method is proposed for analysing an optical coherence tomography (OCT) image of the anterior segment (AS) of a subject's eye. A region of interest is defined which is a region of the image containing the junction of the cornea and iris, and an estimated position the junction within the region of interest is derived. Using this a second region of the image is obtained, which is a part of the image containing the estimated position of the junction. Features of the second region are obtained, and those features are input to an adaptive model to generate data characterizing the junction.
    Type: Application
    Filed: August 1, 2013
    Publication date: June 11, 2015
    Applicant: SINGAPORE HEALTH SERVICES PTE LTD
    Inventors: Yanwu Xu, Jiang Liu, Wing Kee Damon Wong, Beng Hai Lee, Tin Aung, Baskaran Mani, Shamira Perera