Patents by Inventor Dian X. Shi

Dian X. Shi 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: 4844093
    Abstract: An intraocular lens folding and inserting tool is formed of a folding clamp which bends the lens in half between spaced apart, resilient forceps tips which are temporarily secured within the folding clamp. The forceps is separated from the folding clamp for holding the folded lens and for inserting the folded lens into the anterior chamber of an eye through a small incision in the limbus of the eye. The folding clamp includes a U-shaped channel having side walls, a base and an open side, within which channel a lens is positioned. The forceps tips are secured in the channel between the side walls and between the lens and the channel base. A clamp pressure member engages and presses the center line of the lens towards the channel base for folding the lens in half between the tips.
    Type: Grant
    Filed: November 30, 1987
    Date of Patent: July 4, 1989
    Assignee: Kresge Eye Institute
    Inventors: Robert S. Jampel, Dian X. Shi
  • Patent number: 4747404
    Abstract: A surgical tool for folding and inserting a folded lens into the anterior chamber of an eye through a small incision in the limbus of the eye includes an elongated tube which is longitudinally split into a U-shaped base section and a manually, axially slidable U-shaped cover section. The tube has an elongated, inner portion, which is inserted into the anterior chamber of the eye, and an outer portion. A tubular guide sleeve encircles the outer portion of the base section. A cylindrically-shaped plug is positioned within the base section and sleeve to provide an arcuate space between the plug and the inner wall of the sleeve. The cover section is slidably inserted within the space for guiding and positioning the cover section for overlapping or uncovering the inner end portion of the base section. Means are provided for folding and pressing a lens into the base and holding it there until the cover section is manually slid over the base to encircle the lens within the tube inner portion.
    Type: Grant
    Filed: November 10, 1986
    Date of Patent: May 31, 1988
    Assignee: Kresge Eye Institute of Wayne State University
    Inventors: Robert S. Jampel, Dian X. Shi