Patents by Inventor Robert A. Weersink

Robert A. Weersink 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: 10607738
    Abstract: Various embodiments are described herein for a system and a method for treatment planning for providing ablative therapy to a patient. The treatment planning may involve segmenting images of the patient to define areas to receive treatment, defining trial parameters, simulating treatment of ablative therapy to the patient according to the trial parameters; analyzing a thermal dose distribution resulting from the simulated treatment to determine treatment effectiveness; determining when the treatment effectiveness meets a treatment effectiveness criteria; and providing an indication of the trial parameters when the treatment effectiveness meets the treatment effectiveness criteria.
    Type: Grant
    Filed: May 13, 2016
    Date of Patent: March 31, 2020
    Assignees: University Health Network, Sunnybrook Research Institute
    Inventors: Sean Davidson, Michael D. Sherar, Kieran Murphy, Claire McCann, Robert Weersink
  • Publication number: 20170319719
    Abstract: There is provided herein a nanovesicle having a bilayer comprising a saturated first phospholipid and no more than about 15 molar % of a second phospholipid covalently conjugated to a J-aggregate forming dye.
    Type: Application
    Filed: July 27, 2017
    Publication date: November 9, 2017
    Applicant: UNIVERSITY HEALTH NETWORK
    Inventors: Gang Zheng, Elizabeth Huynh, Kenneth Ng, Mojdeh Shakiba, Robert Weersink, Brian Wilson
  • Publication number: 20160335413
    Abstract: Various embodiments are described herein for a system and a method for treatment planning for providing ablative therapy to a patient. The treatment planning may involve segmenting images of the patient to define areas to receive treatment, defining trial parameters, simulating treatment of ablative therapy to the patient according to the trial parameters; analyzing a thermal dose distribution resulting from the simulated treatment to determine treatment effectiveness; determining when the treatment effectiveness meets a treatment effectiveness criteria; and providing an indication of the trial parameters when the treatment effectiveness meets the treatment effectiveness criteria.
    Type: Application
    Filed: May 13, 2016
    Publication date: November 17, 2016
    Applicant: University Health Network
    Inventors: Sean Davidson, Michael D. Sherar, Kieran Murphy, Claire McCann, Robert Weersink
  • Patent number: 9330490
    Abstract: Methods and systems for visualization of 3D parametric data in a 2D image. The set of 3D parametric data includes a plurality of voxels in 3D space each associated with at least one parametric value, and the set of 2D image data includes information about a known camera position and a known camera orientation at which the 2D image was obtained. A graphical representation is generated of the parametric values of the voxels corresponding to a viewing surface in 3D space. A virtual 2D view of the viewing surface is determined. The 2D image is displayed registered with the graphical representation of the parametric values of the voxels corresponding to the virtual 2D view.
    Type: Grant
    Filed: April 26, 2012
    Date of Patent: May 3, 2016
    Assignee: UNIVERSITY HEALTH NETWORK
    Inventors: Robert Weersink, David A. Jaffray, Jimmy Qiu, Andrew Hope, John Cho, Michael B. Sharpe
  • Publication number: 20150359912
    Abstract: There is provided herein a nanovesicle having a bilayer comprising a saturated first phospholipid and no more than about 15 molar % of a second phospholipid covalently conjugated to a J-aggregate forming dye.
    Type: Application
    Filed: January 28, 2014
    Publication date: December 17, 2015
    Applicant: UNIVERSITY HEALTH NETWORK
    Inventors: Gang Zheng, Elizabeth Huynh, Kenneth Ng, Mojdeh Shakiba, Robert Weersink, Brian Wilson
  • Patent number: 9138597
    Abstract: A method, computer program product and processor for quantitatively registering a 2D endoscopic ROI in a 3D volumetric imaging dataset. An endoscopic dataset and a volumetric imaging are registered to a common coordinate system. A 2D endoscopic ROI is generated within the endoscopic imaging dataset. A 3D surface ROI is generated within the volumetric imaging dataset corresponding to the 2D endoscopic ROI, based on a projection of the 2D endoscopic ROI to the registered common coordinate system.
    Type: Grant
    Filed: May 13, 2010
    Date of Patent: September 22, 2015
    Assignee: University Health Network
    Inventors: Robert Weersink, Andrew Hope, Jeff Siewerdsen, David Jaffray, Aidin Kashigar, Michael Daly, Jonathon Eubank, John Cho
  • Publication number: 20130113802
    Abstract: Methods and systems for visualization of 3D parametric data in a 2D image. The set of 3D parametric data includes a plurality of voxels in 3D space each associated with at least one parametric value, and the set of 2D image data includes information about a known camera position and a known camera orientation at which the 2D image was obtained. A graphical representation is generated of the parametric values of the voxels corresponding to a viewing surface in 3D space. A virtual 2D view of the viewing surface is determined. The 2D image is displayed registered with the graphical representation of the parametric values of the voxels corresponding to the virtual 2D view.
    Type: Application
    Filed: April 26, 2012
    Publication date: May 9, 2013
    Applicant: UNIVERSITY HEALTH NETWORK
    Inventors: Robert WEERSINK, David A. JAFFRAY, Jimmy QIU, Andrew HOPE, John CHO, Michael B. SHARPE
  • Publication number: 20120155731
    Abstract: A method, computer program product and processor for quantitatively registering a 2D endoscopic ROI in a 3D volumetric imaging dataset. An endoscopic dataset and a volumetric imaging are registered to a common coordinate system. A 2D endoscopic ROI is generated within the endoscopic imaging dataset. A 3D surface ROI is generated within the volumetric imaging dataset corresponding to the 2D endoscopic ROI, based on a projection of the 2D endoscopic ROI to the registered common coordinate system.
    Type: Application
    Filed: May 13, 2010
    Publication date: June 21, 2012
    Applicant: University Health Network
    Inventors: Robert Weersink, Andrew Hope, Jeff Siewerdsen, David Jaffray, Aidin Kashigar, Michael Daly, Jonathon Eubank, John Cho
  • Publication number: 20110106222
    Abstract: A treatment device (2) includes a mobile cart (4) on which is mounted a housing (6) and an upright 8 to which is pivotally mounted, at hinge region (9), a second upright (11). An arm (12) is pivotally mounted at hinge region (10) to upright (11). Arm (12) supports a head piece (14) via a hinged joint (16). The housing (6) encloses a power supply, parts of a closed circuit cooling system arranged to cool the head piece (14) in use and electronic components. A user-operable control panel (18) for the device is mounted at a convenient height on the upright (8).
    Type: Application
    Filed: April 24, 2009
    Publication date: May 5, 2011
    Inventors: Brian Wilson, Brock Miller, Robert Weersink, Kai Zhang, George Newtchev
  • Publication number: 20080255461
    Abstract: Multiple site information of light intensity is obtained by application of a multiple-fibre probe in a real-time optical monitoring system. The multiple-fibre probe includes a plurality of optical fibres distributed along the length of the probe. Each optical fibre may be is switchable between the mode for transmitting optical signal into the malignant tissue and the mode for collecting the optical signal from the same tissue. Thus the numbers of the probes can be minimized for collecting multiple site light information and the irritation to the tissue is reduced. A method of using such a probe to determine coagulated boundary in thermal or other treatment is also described.
    Type: Application
    Filed: March 26, 2008
    Publication date: October 16, 2008
    Inventors: Robert Weersink, Lee Chin, John Trachtenberg, Alex Vitkin, William Whelan, Brian C. Wilson
  • Patent number: 6413267
    Abstract: A method is provided for treating a patient having a disorder, wherein the method includes irradiating a tissue surface of the patient with at least one laser beam, automatically monitoring the tissue, and automatically controlling the at least one laser beam to adjust and/or terminate the treatment in a therapeutically effective manner. The method noninvasively determines in real-time the irradiance and/or radiant exposure of a target tissue at a predetermined depth below the tissue surface by detecting the radial dependence of light remitted from the tissue surface. Preferably, the method employs a near-infrared light laser beam and a visible laser light beam in combination. An apparatus for performing the method is also provided.
    Type: Grant
    Filed: August 9, 1999
    Date of Patent: July 2, 2002
    Assignee: Theralase, Inc.
    Inventors: Roger J. Dumoulin-White, Lothar Lilge, Robert A. Weersink
  • Patent number: 6344051
    Abstract: A method is provided for treating a patient having a disorder, wherein the method includes irradiating a tissue surface of the patient with at least one laser beam, automatically monitoring the tissue, and automatically controlling the at least one laser beam to adjust and/or terminate the treatment in a therapeutically effective manner. The method noninvasively determines in real-time the irradiance and/or radiant exposure of a target tissue at a predetermined depth below the tissue surface by detecting the radial dependence of light remitted from the tissue surface. Preferably, the method employs a near-infrared light laser beam and a visible laser light beam in combination. An apparatus for performing the method is also provided.
    Type: Grant
    Filed: August 9, 1999
    Date of Patent: February 5, 2002
    Assignee: Theralase, Inc.
    Inventors: Roger J. Dumoulin-White, Lothar Lilge, Robert A. Weersink
  • Patent number: 6219566
    Abstract: The present invention provides a method for measurement of concentration of fluorophores in turbid media. The method uses a fluorescence plus reflectance technique to measure quantitatively the in vivo concentration of a fluorescent drug independent of the tissue optical properties. The method involves using the reflectance measurement as a means of correcting for tissue scattering and absorption in the fluorescence measurement. Light directed to the tissue by means of an optical fiber to excite the fluorophores. Fluorescence from the fluorophores is measured by another fiber at a distance (D1) from the source in the turbid medium, while the excitation light is simultaneously collected at a distance (D2) from the source. The ratio fluorescence/reflectance will be approximately constant for a fixed concentration of the fluorophore and a judicious choice of D1 and D2, regardless of the optical properties of the tissue.
    Type: Grant
    Filed: July 13, 1999
    Date of Patent: April 17, 2001
    Assignee: Photonics Research Ontario
    Inventors: Robert A. Weersink, Michael S. Patterson