Patents by Inventor Liezhi Liang

Liezhi Liang 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).

  • Accommodative, curvature-changing intraocular lenses
    Patent number: 10052197
    Abstract: The present disclosure concerns a curvature-changing, accommodative intraocular lens (IOL) that may be implanted in the capsular bag of a patient's eye and is configured to harness the energy of the movement of the capsular bag upon contraction and relaxation of the ciliary muscles. In certain embodiments, the IOL includes a fluid optic body defining a cavity for containing an optical fluid, the cavity at least partially defined by a first optical membrane configured to extend across an optical axis of the patient's eye. The IOL further includes a plurality of lever arms extending from the optic body and configured to be in contact with the capsular bag such that axial compression of the capsular bag causes each of the plurality of lever arms to rotate about a corresponding pivot so as to modify a curvature of the first optical membrane.
    Type: Grant
    Filed: August 6, 2015
    Date of Patent: August 21, 2018
    Assignee: Novartis AG
    Inventors: William J. S. Dolla, Parag Gupta, Liezhi Liang
  • ACCOMMODATIVE, CURVATURE-CHANGING INTRAOCULAR LENSES
    Publication number: 20160157996
    Abstract: The present disclosure concerns a curvature-changing, accommodative intraocular lens (IOL) that may be implanted in the capsular bag of a patient's eye and is configured to harness the energy of the movement of the capsular bag upon contraction and relaxation of the ciliary muscles. In certain embodiments, the IOL includes a fluid optic body defining a cavity for containing an optical fluid, the cavity at least partially defined by a first optical membrane configured to extend across an optical axis of the patient's eye. The IOL further includes a plurality of lever arms extending from the optic body and configured to be in contact with the capsular bag such that axial compression of the capsular bag causes each of the plurality of lever arms to rotate about a corresponding pivot so as to modify a curvature of the first optical membrane.
    Type: Application
    Filed: August 6, 2015
    Publication date: June 9, 2016
    Inventors: WILLIAM J.S. DOLLA, PARAG GUPTA, LIEZHI LIANG
  • Injection aid for anterior juxtascleral depot
    Patent number: 7879006
    Abstract: The present invention is an ophthalmic injection aid having a positioning member and a needle assembly. The injection aid facilitates the creation of an anterior juxtascleral depot of an ophthalmic drug.
    Type: Grant
    Filed: January 22, 2009
    Date of Patent: February 1, 2011
    Assignee: Alcon Research, Ltd.
    Inventors: Wan-Heng Wang, Liezhi Liang
  • Injection aid for anterior juxtascleral depot
    Publication number: 20090192458
    Abstract: The present invention is an ophthalmic injection aid having a positioning member and a needle assembly. The injection aid facilitates the creation of an anterior juxtascleral depot of an ophthalmic drug.
    Type: Application
    Filed: January 22, 2009
    Publication date: July 30, 2009
    Inventors: Wan-Heng Wang, Liezhi Liang