Patents by Inventor Curtis W. Kowalczyk

Curtis W. Kowalczyk 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: 4950271
    Abstract: A knee reconstruction apparatus and method provides for controlling and adjusting the point of fixation of a ligament graft, for example a replacement for the anterior cruciate ligament, which permits precisely and repeatably adjusting the length of the ligament graft or graft components with the joint under a prescribed load prior to fixation. A fixture is fixed on the tibia and includes an adjustable clamp that holds a ligament graft anchored or held in the femur. The clamp can be moved for adjusting the length of the ligament graft, or individual segments of a composite ligament graft while the joint is under a prescribed load. The load carried by one or more individual graft components also can be measured prior to fixation to ensure that each of the segments of a composite ligament graft will carry the desired or selected load for a joint under a prescribed load.
    Type: Grant
    Filed: February 6, 1989
    Date of Patent: August 21, 1990
    Assignee: Regents of the University of Minnesota
    Inventors: Jack L. Lewis, William D. Lew, Curtis W. Kowalczyk, Robert E. Hunter