Patents by Inventor Donald Praeger

Donald Praeger 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: 4676792
    Abstract: The placing of an artificial intraocular lens device (IOL) in the anterior chamber of the eye (in front of the iris) for treating myopia. The intraocular lens device includes a meniscus style lens which has a plano anterior surface and a concave posterior surface. The edges of the lens are rounded off and the peripheral portion of the lens is considerably thicker than the central portion of the lens. The lens is a minus (negative) refracting lens. The lens is suspended in the anterior chamber by three or four carrying angles or haptics having solid footplates at their ends for anchoring the device in the anatomic angle of the eye. The solid footplates are sized to prevent tissue overgrowth and resulting synechia after placement, additionally facilitating subsequent removal of the lens device from the anterior chamber if necessary. A ridges lens glide is also provided to facilitate insertion of the lens device into the anterior chamber during implantation.
    Type: Grant
    Filed: November 10, 1986
    Date of Patent: June 30, 1987
    Inventor: Donald Praeger