Patents by Inventor Heraldo Sa Martins

Heraldo Sa Martins 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).

  • Apparatus and methods for reversal of presbyopia using near infrared selective laser on zonnulas
    Patent number: 6491688
    Abstract: A method and apparatus for presbyopia correction are disclosed. The disclosed preferred embodiments of the system consists of a beam spot controller, a beam delivery device, a slit lamp, a visible aiming beam and a selected solid state laser having a wavelength of (0.9-1.4) microns. Presbyopia is treated by the thermal contraction of the human zonnulas with a temperature increase of about (15-50) degree-C generated by the selected lasers. The near infrared laser is focused and delivered by a gonio lens to the target zonnulas area and viewed by a surgeon using a slip lamp. The selected laser having an optimal absorption characteristics is tightly focused such that only the target zonnulas is heated, while the cornea, the lens body and the adjacent areas are not damaged.
    Type: Grant
    Filed: June 21, 2000
    Date of Patent: December 10, 2002
    Inventors: J. T. Lin, Heraldo Sa Martins
  • Presbyopia correction using a protected space pattern, methods and apparatus
    Patent number: 5803923
    Abstract: A zone of increased curvature is produced in the inferior lower quadrants of the cornea FIG. 1 (5). This zone produces a "plus effect" FIG. 2 (5) which leads presbyopia patients to be able to read from near distance again. Such effect is achieved using photoablitive techniques and fixation, patterns, and apparatus specially designed.
    Type: Grant
    Filed: September 15, 1994
    Date of Patent: September 8, 1998
    Assignee: Jugvir I. Singh-Derewa
    Inventors: Jugvir Inder Singh-Derewa, Heraldo Sa Martins, Etelvino Teixeira Coelho