Patents by Inventor Anne Hollister

Anne Hollister 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).

  • Prosthetic thumb joint and method of manufacture
    Patent number: 5549690
    Abstract: A method for modeling a prosthetic CMC thumb joint, and the joint manufactured therefrom, involves anatomically locating the two non-perpendicular and non-intersecting axes of rotation for the joint. The surface of revolution about these two axes, which is a torus, is then used to mathematically model the bearing surfaces of the prosthetic joint.
    Type: Grant
    Filed: February 28, 1994
    Date of Patent: August 27, 1996
    Assignee: Avanta Orthopaedics
    Inventors: Anne Hollister, Mari S. Truman, Leonard Bodell, Louise Focht
  • Prosthetic joint and method of manufacture
    Patent number: 5522900
    Abstract: A method for modeling a prosthetic joint, and the joint manufactured therefrom, involves anatomically locating the two non-perpendicular and non-intersecting axes of rotation for the joint. The surface of revolution about these two axes, which is a torus, is then used to mathematically model the bearing surfaces of the prosthetic joint.
    Type: Grant
    Filed: December 17, 1993
    Date of Patent: June 4, 1996
    Assignee: Avanta Orthopaedics
    Inventor: Anne Hollister
  • Total knee endoprosthesis with fixed flexion-extension axis of rotation
    Patent number: 5326361
    Abstract: The invention is a total knee endoprosthesis with a fixed flexion-extension axis throughout all degrees of flexion and extension of the knee. The endoprosthesis has a femoral component with spaced apart medial and lateral condyle portions which slidably seat on a tibial implant portion. The fixed flexion-extension axis is directed inferiorly and posteriorly from the medial condyle portion to the lateral condyle portion and is offset from both the transverse and coronal planes equally by 3.0 to 3.8 degrees. A longitudinal axis through the tibia allows the tibia to rotate nonorthogonally and anteriorly of the flexion-extension axis. A patellar groove which is perpendicular to the flexion-extension axis. In the patellar groove slides an optional patellar component or the natural patella.
    Type: Grant
    Filed: May 26, 1993
    Date of Patent: July 5, 1994
    Assignee: Research and Education Institute, Inc.
    Inventor: Anne Hollister
  • Total knee endoprosthesis with fixed flexion-extension axis of rotation
    Patent number: 5133758
    Abstract: The invention is a total knee endoprosthesis with a fixed flexion-extension xis throughout all degrees of flexion and extension of the knee. The endoprosthesis has a femoral component with spaced apart medial and lateral condyle portions which slidably seat on a tibial implant portion. The fixed flexion-extension axis is directed inferiorly and posteriorly from the medial condyle portion to the lateral condyle portion and is offset from both the transverse and coronal planes equally by 3.0 to 3.8 degrees. A longitudinal axis through the tibia allows the tibia to rotate nonorthogonally and anteriorly of the flexion-extension axis. A patellar groove which is perpendicular to the flexion-extension axis. In the patellar groove slides an optional patellar component or the natural patella.
    Type: Grant
    Filed: September 16, 1991
    Date of Patent: July 28, 1992
    Assignee: Research and Education Institute, Inc. Harbor-UCLA Medical Center
    Inventor: Anne Hollister