Patents by Inventor Carl M. Patrnchak

Carl M. Patrnchak 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: 4361142
    Abstract: An orthotic joint, and the orthosis with which it is used, for the protective treatment of ligamentous injuries or deficiencies, or as a supplement to total joint replacement. The joint includes coacting guide members that are both slidable and pivotal with respect to each other and, when assembled and supported in pairs on opposite sides of a patient's knee, allow freedom of movement of the knee except for those movements that would normally be controlled by the ligament or ligaments requiring protection. An arrangement of straps connect each pair of guide members and are tensioned (and untensioned) in sequence to perform operations in conjunction with the articulating surfaces of the members that would otherwise be demanded from the protected ligament(s).
    Type: Grant
    Filed: August 20, 1981
    Date of Patent: November 30, 1982
    Assignee: Northwestern University
    Inventors: Jack L. Lewis, Carl M. Patrnchak, William D. Lew, George T. Shybut