Patents by Inventor David J. Schanzlin

David J. Schanzlin 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: 10806631
    Abstract: A surgical tool includes a housing having a driver and a surgical blade configured to be bi-directionally rotated by the driver. The surgical tool also includes a footplate configured to receive the surgical blade. The footplate includes a bottom portion configured to rest on ocular tissue of a patient's eye. The bottom portion includes a slot configured to allow passage of a portion of the surgical blade through the bottom portion of the footplate and into the ocular tissue of the patient's eye. The footplate also includes multiple walls having multiple openings. The openings are configured to receive additional portions of the surgical blade such that the surgical blade is rotatable relative to the footplate. The footplate further includes an additional opening or open side configured to allow viewing of the surgical blade and the slot during use.
    Type: Grant
    Filed: August 13, 2018
    Date of Patent: October 20, 2020
    Assignee: Refocus Group, Inc.
    Inventors: David G. Ozinga, David J. Schanzlin
  • Publication number: 20190060124
    Abstract: A surgical tool includes a housing having a driver and a surgical blade configured to be bi-directionally rotated by the driver. The surgical tool also includes a footplate configured to receive the surgical blade. The footplate includes a bottom portion configured to rest on ocular tissue of a patient's eye. The bottom portion includes a slot configured to allow passage of a portion of the surgical blade through the bottom portion of the footplate and into the ocular tissue of the patient's eye. The footplate also includes multiple walls having multiple openings. The openings are configured to receive additional portions of the surgical blade such that the surgical blade is rotatable relative to the footplate. The footplate further includes an additional opening or open side configured to allow viewing of the surgical blade and the slot during use.
    Type: Application
    Filed: August 13, 2018
    Publication date: February 28, 2019
    Inventors: David G. Ozinga, David J. Schanzlin
  • Publication number: 20140288643
    Abstract: Devices and methods for storing and injecting a corneal tissue graft are disclosed herein. In one embodiment, an apparatus includes a tissue container and an adaptor configured to be coupled to the tissue container. The tissue container defines an interior region configured to receive a precut corneal tissue graft therein. The tissue container is also configured to be coupled to an injector assembly that can be used to move the corneal tissue graft out of the interior region of the tissue container and into an anterior chamber of a recipient's eye. The adaptor can be configured to prevent the tissue graft from migrating out of the tissue container and/or can be configured to be coupled to the injector assembly. The tissue graft can remain within the tissue container during storage, transport and during the implantation procedure until it is injected into the patient's eye.
    Type: Application
    Filed: January 24, 2014
    Publication date: September 25, 2014
    Applicants: TDAK MEDICAL INC., THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
    Inventors: Aurora A. Torres, David J. Schanzlin, Thomas A. Trozera
  • Patent number: 8636795
    Abstract: Devices and methods for storing and injecting a corneal tissue graft are disclosed herein. In one embodiment, an apparatus includes a tissue container and an adaptor configured to be coupled to the tissue container. The tissue container defines an interior region configured to receive a precut corneal tissue graft therein. The tissue container is also configured to be coupled to an injector assembly that can be used to move the corneal tissue graft out of the interior region of the tissue container and into an anterior chamber of a recipient's eye. The adaptor can be configured to prevent the tissue graft from migrating out of the tissue container and/or can be configured to be coupled to the injector assembly. The tissue graft can remain within the tissue container during storage, transport and during the implantation procedure until it is injected into the patient's eye.
    Type: Grant
    Filed: April 23, 2009
    Date of Patent: January 28, 2014
    Assignees: The Regents of the University of California, TDAK Medical Inc.
    Inventors: Aurora A. Torres, David J. Schanzlin, Thomas A. Trozera
  • Publication number: 20090270982
    Abstract: Devices and methods for storing and injecting a corneal tissue graft are disclosed herein. In one embodiment, an apparatus includes a tissue container and an adaptor configured to be coupled to the tissue container. The tissue container defines an interior region configured to receive a precut corneal tissue graft therein. The tissue container is also configured to be coupled to an injector assembly that can be used to move the corneal tissue graft out of the interior region of the tissue container and into an anterior chamber of a recipient's eye. The adaptor can be configured to prevent the tissue graft from migrating out of the tissue container and/or can be configured to be coupled to the injector assembly. The tissue graft can remain within the tissue container during storage, transport and during the implantation procedure until it is injected into the patient's eye.
    Type: Application
    Filed: April 23, 2009
    Publication date: October 29, 2009
    Applicant: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
    Inventors: Aurora A. Torres, David J. Schanzlin, Thomas A. Trozera
  • Publication number: 20040073303
    Abstract: The subject invention relates to an intrastromal corneal insert designed to be meridionally situated in an interlamellar pocket or channel made within the cornea of a mammalian eye. The insert has a shape which, when inserted into the cornea, has a significant meridional dimension and may be used to adjust corneal curvature and thereby correct or improve vision abnormalities such as hyperopia. The inserts may also have a circumferential component to their configuration to allow concurrent correction of other vision abnormalities. The radial insert may be made of a physiologically compatible material, e.g., one or more synthetic or natural, soft, firm, or gelatinous polymers. In addition, the insert or segment may be used to deliver therapeutic or diagnostic agents to the corneal interior or to the interior of the eye.
    Type: Application
    Filed: December 18, 1997
    Publication date: April 15, 2004
    Applicant: HARRY J. MACEY
    Inventors: DAVID J. SCHANZLIN, STEVEN M. VERITY, THOMAS A. SILVESTRINI, ROBERT A. PROUDFOOT
  • Patent number: 5092863
    Abstract: An apparatus for correcting the curvature of a cornea of an eye comprises a housing for placement on the cornea for altering the curvature of cornea to extend a portion of the cornea above a predefined plane parallel to a plane tangent to the eye. The apparatus also includes a laser which is positioned to ablate the portion of the cornea which extends above the plane from the side of the cornea. A keratometer is also included to scan the cornea to determine the amount of the cornea extending above the plane.
    Type: Grant
    Filed: April 9, 1990
    Date of Patent: March 3, 1992
    Assignee: St. Louis University
    Inventor: David J. Schanzlin
  • Patent number: 4664110
    Abstract: A method for freezing corneal tissue prior to cryorefractive surgery, including the controlled rate freezing of the tissue at a rate of less than seven degrees centigrade per minute.
    Type: Grant
    Filed: March 18, 1985
    Date of Patent: May 12, 1987
    Assignee: University of Southern California
    Inventor: David J. Schanzlin