Patents by Inventor James L. Crumley

James L. Crumley 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).

  • Hip stem centralizer datum guide, and method
    Patent number: 7828805
    Abstract: A hip stem centralizer datum guide and method are provided for positioning a proximal portion of a hip stem component within bone cement in an intramedullary canal of a femur. The datum guide is positionable in a predetermined position relative to the intramedullary canal and is able to create a datum that records the predetermined hip stem component position relative to the intramedullary canal. The datum is able to be referenced to position the hip stem component in the predetermined hip stem component position in the bone cement in the intramedullary canal.
    Type: Grant
    Filed: February 2, 2006
    Date of Patent: November 9, 2010
    Assignee: Zimmer Technology, Inc.
    Inventors: Stephen H. Hoag, James L. Crumley, Scott J Steffensmeier, Erin M. Johnson, Kevin S. Cook, Archie W. Newsome, Bobby Chan
  • HIP STEM CENTRALIZER DATUM GUIDE AND METHOD
    Publication number: 20090048603
    Abstract: A hip stem centralizer datum guide (40, 100, 200, 300) and method are provided for positioning a proximal portion of a hip stem component (44) within bone cement in an intramedullary canal of a femur. The datum guide is positionable in a predetermined position relative to the intramedullary canal and is able to create a datum (70, 72, 74, 76, 120, 220, 302) that records the predetermined hip stem component position relative to the intramedullary canal. The datum is able to be referenced to position the hip stem component in the predetermined hip stem component position in the bone cement in the intramedullary canal.
    Type: Application
    Filed: February 1, 2007
    Publication date: February 19, 2009
    Applicant: ZIMMER TECHNOLOGY, INC.
    Inventors: Stephen H. Hoag, James L. Crumley, Scott J. Steffensmeier, Erin M. Johnson, Kevin S. Cook, Archie W. Newsome, Bobby Chan
  • Prosthetic stem with strengthening rib
    Patent number: 6514288
    Abstract: The present invention provides an improved prosthetic stem for implantation in a bone. Specifically, the present invention provides a prosthetic femoral stem having a strengthening rib protruding from the substrate thereof and being flush with a porous coating formed thereon. The strengthening rib is advantageously positioned so as to increase the cross-sectional moment of inertia of the prosthetic femoral stem and thereby decrease the stress on the anterio-lateral surface of the femoral stem. A protrusion in accordance with the present invention may also be utilized with a prosthetic femoral stem absent a porous coating. In such an embodiment, the height of the protrusion is such that the protrusion will be surrounded by the cement mantle formed when the prosthetic femoral component is cemented in a femoral canal.
    Type: Grant
    Filed: February 23, 2001
    Date of Patent: February 4, 2003
    Assignee: Zimmer, Inc.
    Inventors: Steven L. Meulink, Jack D. Jennings, James L. Crumley, II, Tracy R. Gilliland
  • Prosthetic stem with strengthening rib
    Publication number: 20020120344
    Abstract: The present invention provides an improved prosthetic stem for implantation in a bone. Specifically, the present invention provides a prosthetic femoral stem having a strengthening rib protruding from the substrate thereof and being flush with a porous coating formed thereon. The strengthening rib is advantageously positioned so as to increase the cross-sectional moment of inertia of the prosthetic femoral stem and thereby decrease the stress on the anterio-lateral surface of the femoral stem. A protrusion in accordance with the present invention may also be utilized with a prosthetic femoral stem absent a porous coating. In such an embodiment, the height of the protrusion is such that the protrusion will be surrounded by the cement mantle formed when the prosthetic femoral component is cemented in a femoral canal.
    Type: Application
    Filed: February 23, 2001
    Publication date: August 29, 2002
    Inventors: Steven L. Meulink, Jack D. Jennings, James L. Crumley, Tracy R. Gilliland