Patents by Inventor Ryan C. Keefer

Ryan C. Keefer 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: 8771367
    Abstract: A liner adapted for insertion into an acetabular shell for use in hip arthroplasty. The liner includes a concave inner surface adapted to engage a femoral head. The liner also includes an outer surface adapted to engage the acetabular shell and a rim that extends between the inner surface and the outer surface. The outer surface includes a locking section extending from the rim, a composite-curved section extending from the locking section at a first transition point, and a dome section extending from the composite-curved section, wherein at the first transition point, the composite-curved section is tangential to the locking section.
    Type: Grant
    Filed: September 20, 2012
    Date of Patent: July 8, 2014
    Assignee: Depuy Synthes Products, LLC
    Inventors: John M Armacost, James A Caywood, Ryan C Keefer
  • Publication number: 20140107801
    Abstract: An orthopaedic prosthesis for use in a hip replacement surgery. The orthopaedic prosthesis includes a metallic foam shell and a metallic core. The metallic core includes a neck configured to receive a femoral head component and a stem extending through the metallic foam shell.
    Type: Application
    Filed: December 18, 2013
    Publication date: April 17, 2014
    Inventors: John M. Armacost, Ryan C. Keefer, Jeffrey A. McAnelly
  • Publication number: 20130338789
    Abstract: An orthopaedic prosthesis for use in a hip replacement surgery. The orthopaedic prosthesis includes a metallic foam shell and a metallic core. The metallic core includes a neck configured to receive a femoral head component and a stem extending through the metallic foam shell.
    Type: Application
    Filed: June 18, 2012
    Publication date: December 19, 2013
    Inventors: John M. Armacost, Ryan C. Keefer, Jeffrey A. McAnelly
  • Publication number: 20130325018
    Abstract: An orthopaedic surgical instrument assembly includes an attachment device, an intramedullary orthopaedic surgical instrument, and a cutting block. The attachment device includes a housing, a rail extending outwardly from the housing, and a mounting frame positioned on the rail that is configured to slide relative to the housing along the rail. The intramedullary orthopaedic surgical instrument is removably coupled to the housing, and the cutting block is removably coupled to the mounting frame.
    Type: Application
    Filed: May 31, 2012
    Publication date: December 5, 2013
    Inventors: Kyle B. Thomas, Todd Kilpela, Steven P. Gowers, Ryan C. Keefer, William R. Macumber, Jonathan C. Lee, Lisa M. Major
  • Publication number: 20130325136
    Abstract: An orthopaedic surgical instrument assembly includes a tibial base trial adapted to be positioned on a surgically-prepared proximal end of a patient's tibia, an intramedullary orthopaedic surgical instrument engaged with a lower surface of the tibial base trial, and a fastener configured to pivot relative to the tibial base trial. The fastener is configured to engage with the intramedullary orthopaedic surgical instrument to removably couple the intramedullary orthopaedic surgical instrument to the tibial base trial.
    Type: Application
    Filed: May 31, 2012
    Publication date: December 5, 2013
    Inventors: Kyle B. Thomas, Todd Kilpela, Ryan C. Keefer, Lisa M. Major
  • Publication number: 20130325019
    Abstract: A method of surgically preparing a proximal end of a tibia includes inserting an intramedullary orthopaedic surgical instrument into a medullary canal of the tibia, securing an attachment device to the intramedullary orthopaedic surgical instrument, attaching a cutting block to the attachment device, resecting the proximal end of the tibia using the cutting block to form a surgically-prepared surface, positioning a tibial base trial on the surgically-prepared surface, and inserting a keel punch through a slot defined in the tibial base trial and into the surgically-prepared surface of the tibia.
    Type: Application
    Filed: May 31, 2012
    Publication date: December 5, 2013
    Inventors: Kyle B. Thomas, Todd Kilpela, Steven P. Gowers, Ryan C. Keefer, William R. Macumber, Jonathan C. Lee, Lisa M. Major
  • Publication number: 20130296870
    Abstract: Reciprocating rasps for the surgical preparation of the bone prior to the implantation of a glenoid or acetabular component with complex geometry are disclosed. Surgical methods for the use of such reciprocating rasps are also disclosed.
    Type: Application
    Filed: July 12, 2013
    Publication date: November 7, 2013
    Inventors: Ryan C. Keefer, Sarah M Anthony, Conrad L. Klotz, Kyle E. Lappin, Van A. Flamion, James A. Caywood, Francisco A. Amaral, Michael J. Fortin, Gabriel M. Surma, Joanna L. Surma
  • Patent number: 8535323
    Abstract: A hand held instrument is provided in one embodiment in a kit for use in positioning a constraining ring of an acetabular liner system and includes a shaft including a first coupling member, and a plurality of heads, each of the plurality of heads including (i) a base configured to couple with the first coupling member and (ii) a pair of resilient gripper arms, each of the pair of resilient gripper arms defining a constraining ring reception area having a size different from the constraining ring reception area defined by the pair of gripper arms of each of the other of the plurality of heads.
    Type: Grant
    Filed: January 25, 2008
    Date of Patent: September 17, 2013
    Assignee: DePuy Synthes Products, LLC
    Inventors: Ryan C. Keefer, Larry G. McCleary, Robert B. Brigham
  • Patent number: 8506569
    Abstract: Reciprocating rasps for the surgical preparation of the bone prior to the implantation of a glenoid or acetabular component with complex geometry are disclosed. Surgical methods for the use of such reciprocating rasps are also disclosed. A reciprocating rasp for use in the surgical preparation of an acetabulum includes a shaft having a first end configured to be secured in a chuck of a reciprocating tool, and a cutting head secured to a second end of the shaft. The cutting head includes a cutting surface having a plurality of cutting teeth arranged in a geometry that corresponds with a geometry of the acetabular component, and an alignment guide that is devoid of cutting teeth and configured to cooperate with a complementary alignment guide of an acetabular trial instrument when the cutting head is secured to the second end of the shaft.
    Type: Grant
    Filed: November 30, 2010
    Date of Patent: August 13, 2013
    Assignee: DePuy Synthes Products, LLC
    Inventors: Ryan C. Keefer, Sarah M. Anthony, Conrad L. Klotz, Kyle E. Lappin, Van A. Flamion, James A. Caywood, Francisco A. Amaral, Michael J. Fortin, Gabriel M. Surma, Joanna L. Surma
  • Patent number: 8506643
    Abstract: An acetabular prosthesis system configured to be coupled to a surgically-prepared acetabulum includes an acetabular shell, an augment component, and a fastener configured to couple the acetabular shell and the augment component together.
    Type: Grant
    Filed: July 8, 2011
    Date of Patent: August 13, 2013
    Assignee: DePuy Synthes Products, LLC
    Inventors: Ryan C. Keefer, Jeffrey A. Rybolt, Hengda D. Liu, Matthew D. Smith, Gerhard J. A. Drescher
  • Publication number: 20130085576
    Abstract: A liner adapted for insertion into an acetabular shell for use in hip arthroplasty. The liner includes a concave inner surface adapted to engage a femoral head. The liner also includes an outer surface adapted to engage the acetabular shell and a rim that extends between the inner surface and the outer surface. The outer surface includes a locking section extending from the rim, a composite-curved section extending from the locking section at a first transition point, and a dome section extending from the composite-curved section, wherein at the first transition point, the composite-curved section is tangential to the locking section.
    Type: Application
    Filed: September 20, 2012
    Publication date: April 4, 2013
    Applicant: DEPUY PRODUCTS, INC.
    Inventors: JOHN M. ARMACOST, JAMES A. CAYWOOD, RYAN C. KEEFER
  • Publication number: 20110264232
    Abstract: An acetabular prosthesis system configured to be coupled to a surgically-prepared acetabulum includes an acetabular shell, an augment component, and a fastener configured to couple the acetabular shell and the augment component together.
    Type: Application
    Filed: July 8, 2011
    Publication date: October 27, 2011
    Inventors: Ryan C. Keefer, Jeffrey A. Rybolt, Hengda D. Liu, Matthew D. Smith, Gerhard J. A. Drescher
  • Publication number: 20110213372
    Abstract: Reciprocating rasps for the surgical preparation of the bone prior to the implantation of a glenoid or acetabular component with complex geometry are disclosed. Surgical methods for the use of such reciprocating rasps are also disclosed.
    Type: Application
    Filed: November 30, 2010
    Publication date: September 1, 2011
    Inventors: Ryan C. Keefer, Sarah M. Anthony, Conrad L. Klotz, Kyle E. Lappin, Van A. Flamion, James A. Caywood, Francisco A. Amaral, Michael J. Fortin, Gabriel M. Surma, Joanna L. Surma
  • Patent number: 7985260
    Abstract: An acetabular prosthesis system configured to be coupled to a surgically-prepared acetabulum includes an acetabular shell, an augment component, and a fastener configured to couple the acetabular shell and the augment component together.
    Type: Grant
    Filed: June 30, 2008
    Date of Patent: July 26, 2011
    Assignee: DePuy Products, Inc.
    Inventors: Ryan C. Keefer, Jeffrey A. Rybolt, Hengda D. Liu, Matthew D. Smith, Gerhard J. A. Drescher
  • Publication number: 20090326670
    Abstract: An acetabular prosthesis system configured to be coupled to a surgically-prepared acetabulum includes an acetabular shell, an augment component, and a fastener configured to couple the acetabular shell and the augment component together.
    Type: Application
    Filed: June 30, 2008
    Publication date: December 31, 2009
    Inventors: Ryan C. Keefer, Jeffrey A. Rybolt, Hengda D. Liu, Matthew D. Smith, Gerhard J. A. Drescher
  • Publication number: 20090192626
    Abstract: A hand held instrument is provided in one embodiment in a kit for use in positioning a constraining ring of an acetabular liner system and includes a shaft including a first coupling member, and a plurality of heads, each of the plurality of heads including (i) a base configured to couple with the first coupling member and (ii) a pair of resilient gripper arms, each of the pair of resilient gripper arms defining a constraining ring reception area having a size different from the constraining ring reception area defined by the pair of gripper arms of each of the other of the plurality of heads.
    Type: Application
    Filed: January 25, 2008
    Publication date: July 30, 2009
    Applicant: DePuy Products, Inc.
    Inventors: Ryan C. Keefer, Larry G. McCleary, Robert B. Brigham