Patents by Inventor Sarka Pitrova

Sarka Pitrova 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: 4994083
    Abstract: The invention pertains to a soft intracameral lens determined for the location in the posterior chamber of eye.The soft intracameral hydrogel lens has its front supporting and centering convex part determined for leaning against iris having in front a rotation symmetrical shape of a sphere, paraboloid or hyperboloid and passing into the broadest circumference by a surface which shape is equal to or approaches a shape of lateral area of cone, while the hinder supporting part of the lens with a spherical, planar, or moderately convex or concave-curved shape for leaning against a hinder capsula or a membrane from vitreous body in a large surface area. The hinder supporting part is broadened and forms on the edge a retaining ring reaching over the front part as much as by 1.5 mm, whereas the central thickness of the lens ranges between 1 to 3.5 mm. The surface of the soft intracameral lens may be formed, at least in part, from a soft hydrogel containing at least 70% of water at 20.degree. C.
    Type: Grant
    Filed: May 21, 1990
    Date of Patent: February 19, 1991
    Assignee: Ceskoslovenska akademie ved
    Inventors: Jiri Sulc, Zuzana Krcova, Karel Smetana, Sarka Pitrova
  • Patent number: 4955903
    Abstract: The invention pertains to a soft intracameral lens intended for location in the posterior chamber of the eye.The soft intracameral hydrogel lens has a front supporting and centering convex part intended for leaning against the iris having a rotational symmetrical shape of a sphere, paraboloid, or hyperboloid and passing into the broadest circumference by a surface, the shape of this surface being equal to or approaching the shape of the lateral area of a cone, while the hinder, or rear, supporting part of the lens has a spherical, planar, or moderately convex or concave-curved shape and a large surface area for leaning against a hinder capsula or a membrane of the vitreous body. The hinder supporting part is broadened and forms on its edge a retaining ring which reaches over the front part by as much as 1.5 mm, whereas the central thickness of the lens ranges between 1 to 3.5 mm.
    Type: Grant
    Filed: July 12, 1989
    Date of Patent: September 11, 1990
    Assignee: Ceskoslovenska Akademie Ved
    Inventors: Jiri Sulc, Zuzana Krcova, Karel Smetana, Sarka Pitrova