Patents by Inventor Robert E. Ledger

Robert E. Ledger 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).

  • Method and apparatus for hip femoral resurfacing tooling
    Patent number: 8152855
    Abstract: Tools and methods for implanting hip resurfacing femoral prostheses along a path defined by the axis of a shaped femoral head surface are described. The prostheses are stemless partial ball components having an outer surface shaped to conform to an acetabular socket and may be a two part design having a mating sleeve component with an internal bore adapted to receive the shaped femoral head. The tools and methods are capable of accurately implanting both one and two piece ball components and sleeves without requiring the prosthesis to have a central stem or the preparation of a stem cavity in the femoral head and neck.
    Type: Grant
    Filed: September 17, 2010
    Date of Patent: April 10, 2012
    Assignee: Howmedica Osteonics Corp.
    Inventors: Peter Tulkis, Robert E. Ledger, Patrick Raugel
  • METHOD AND APPARATUS FOR HIP FEMORAL RESURFACING TOOLING
    Publication number: 20110004318
    Abstract: Tools and methods for implanting hip resurfacing femoral prostheses along a path defined by the axis of a shaped femoral head surface are described. The prostheses are stemless partial ball components having an outer surface shaped to conform to an acetabular socket and may be a two part design having a mating sleeve component with an internal bore adapted to receive the shaped femoral head. The tools and methods are capable of accurately implanting both one and two piece ball components and sleeves without requiring the prosthesis to have a central stem or the preparation of a stem cavity in the femoral head and neck.
    Type: Application
    Filed: September 17, 2010
    Publication date: January 6, 2011
    Applicant: HOWMEDICA OSTEONICS CORP.
    Inventors: Peter Tulkis, Robert E. Ledger, Patrick Raugel
  • FEMORAL HEAD RESURFACING
    Publication number: 20100121458
    Abstract: A hip resurfacing femoral prosthesis has a partial ball component having an outer surface shaped to conform to an acetabular socket and has a mating sleeve component with an internal bore adapted to receive a femoral head. The head has been shaped and dimensioned to engage the bore and is retained by bone ingrowth, an interference fit or by bone cement. The ball component and sleeve axes may be offset to reposition the outer surface.
    Type: Application
    Filed: November 18, 2009
    Publication date: May 13, 2010
    Applicant: HOWMEDICA OSTEONICS CORP.
    Inventors: Robert E. Ledger, Peter Tulkis, Aiguo Wang, Damon Servidio
  • Method and apparatus for hip femoral resurfacing tooling
    Publication number: 20080109085
    Abstract: Tools and methods for implanting hip resurfacing femoral prostheses along a path defined by the axis of a shaped femoral head surface are described. The prostheses are stemless partial ball components having an outer surface shaped to conform to an acetabular socket and may be a two part design having a mating sleeve component with an internal bore adapted to receive the shaped femoral head. The tools and methods are capable of accurately implanting both one and two piece ball components and sleeves without requiring the prosthesis to have a central stem or the preparation of a stem cavity in the femoral head and neck.
    Type: Application
    Filed: November 3, 2006
    Publication date: May 8, 2008
    Applicant: Howmedica Osteonics Corp.
    Inventors: Peter Tulkis, Robert E. Ledger, Patrick Raugel
  • Femoral head resurfacing
    Publication number: 20080004710
    Abstract: A hip resurfacing femoral prosthesis has a partial ball component having an outer surface shaped to conform to an acetabular socket and has a mating sleeve component with an internal bore adapted to receive a femoral head. The head has been shaped and dimensioned to engage the bore and is retained by bone ingrowth, an interference fit or by bone cement. The ball component and sleeve axes may be offset to reposition the outer surface.
    Type: Application
    Filed: June 30, 2006
    Publication date: January 3, 2008
    Applicant: Howmedica Osteonics Corp.
    Inventors: Robert E. Ledger, Peter Tulkis, Aiguo Wang, Damon Servidio