Patents by Inventor Mervin J. Cross

Mervin J. Cross 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).

  • Measurement of laxity of anterior cruciate ligament
    Patent number: 4913163
    Abstract: A device (10) for measurement of laxity of the knee includes a thigh support (12) and foot support (13) so arranged that the leg of the patient will be bent at the knee when the patient's thigh is resting in the thigh support (12) and his foot is strapped to the foot rest (13). A potentiometer (26) measures movement of the tibial tuberosity of the patient's leg relative to the patella, and a strain gauge mounted on plate (15) measures the force applied by a patient seeking to straighten the leg such as by tensioning the quadriceps muscle. A computer (9) plots and displays a graph (8) or other output of the force applied against the relative movement between the tibial tuberosity and the patella.
    Type: Grant
    Filed: November 5, 1987
    Date of Patent: April 3, 1990
    Inventors: Gregory J. Roger, Mervin J. Cross