Patents by Inventor Benjamin Keitzman

Benjamin Keitzman 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: 4856511
    Abstract: An instrument (10) for accurately guiding a superior lens haptic (20) into the capsular bag to insure that both the inferior haptic (21) and superior haptic (20) are positioned within the confines of the capsular bag to effect lens centration. The instrument (10) comprises a stainless steel wire shaft (12) having a loop (16) on one end and a handle (14) on the other end. The wire has a diameter of 0.022 in. and the loop has an internal diameter of 0.6 mm and the orientation of the loop is critical. The shaft is bent at a point where it connects to the loop so that the loop, when observed from the handle, is inclined at an angle of 45 degrees to the right from the axis of the shaft and the side of the loop facing the observer is tilted downwardly from the axis of the shaft to an angle of about 45 degrees.
    Type: Grant
    Filed: January 23, 1989
    Date of Patent: August 15, 1989
    Inventor: Benjamin Keitzman