Patents by Inventor G. Douglas Letson

G. Douglas Letson 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).

  • Publication number: 20240082010
    Abstract: An orthopedic assembly includes a tibial prosthesis that includes a body that defines an anterior side and a posterior side. The body further incudes a recess in the anterior side of the joint prosthesis and a plurality of openings that extend through the body from the anterior side to the posterior side thereof. At least a first and second opening of the openings are positioned at respective lateral and medial sides of a longitudinal axis of the tibial prosthesis. A modular insert is positioned within the recess of the body such that at least a portion of the modular insert is positioned between the openings of the body. The modular insert is formed separately from the tibial prosthesis and has a porous outer surface to promote tissue ingrowth.
    Type: Application
    Filed: November 20, 2023
    Publication date: March 14, 2024
    Inventors: Damon J. Servidio, G. Douglas Letson, Arlen Dale Hanssen, Michael A. McGovern, Jennifer Grunden
  • Patent number: 11857426
    Abstract: An orthopedic assembly includes a tibial prosthesis that includes a body that defines an anterior side and a posterior side. The body further incudes a recess in the anterior side of the joint prosthesis and a plurality of openings that extend through the body from the anterior side to the posterior side thereof. At least a first and second opening of the openings are positioned at respective lateral and medial sides of a longitudinal axis of the tibial prosthesis. A modular insert is positioned within the recess of the body such that at least a portion of the modular insert is positioned between the openings of the body. The modular insert is formed separately from the tibial prosthesis and has a porous outer surface to promote tissue ingrowth.
    Type: Grant
    Filed: December 8, 2021
    Date of Patent: January 2, 2024
    Assignee: Howmedica Osteonics Corp.
    Inventors: Damon J. Servidio, G. Douglas Letson, Arlen Dale Hanssen, Michael A. McGovern, Jennifer Grunden
  • Publication number: 20230310033
    Abstract: A tool for implanting an orthopedic implant upon a bone includes a body defining an implant socket for releasably retaining an implant and a drill guide opening into the implant socket. The body is an insert receivable in an insert socket of a movable end of the tool. The tool also includes a tip toward which the implant socket faces and opposedly movable relative to the body. The tool is usable in a process that includes clamping a bone between the tip and the implant while the implant is retained in the implant socket. While the bone is clamped, a drill is driven through the drill guide to produce a hole in the bone.
    Type: Application
    Filed: March 23, 2023
    Publication date: October 5, 2023
    Inventors: Damon J. Servidio, Carlos E. Collazo, G. Douglas Letson
  • Publication number: 20220087826
    Abstract: An orthopedic assembly includes a tibial prosthesis that includes a body that defines an anterior side and a posterior side. The body further incudes a recess in the anterior side of the joint prosthesis and a plurality of openings that extend through the body from the anterior side to the posterior side thereof. At least a first and second opening of the openings are positioned at respective lateral and medial sides of a longitudinal axis of the tibial prosthesis. A modular insert is positioned within the recess of the body such that at least a portion of the modular insert is positioned between the openings of the body. The modular insert is formed separately from the tibial prosthesis and has a porous outer surface to promote tissue ingrowth.
    Type: Application
    Filed: December 8, 2021
    Publication date: March 24, 2022
    Inventors: Damon J. Servidio, G. Douglas Letson, Arlen Dale Hanssen, Michael A. McGovern, Jennifer Grunden
  • Patent number: 11219528
    Abstract: An orthopedic assembly includes a tibial prosthesis that includes a body that defines an anterior side and a posterior side. The body further includes a recess in the anterior side of the joint prosthesis and a plurality of openings that extend through the body from the anterior side to the posterior side thereof. At least a first and second opening of the openings are positioned at respective lateral and medial sides of a longitudinal axis of the tibial prosthesis. A modular insert is positioned within the recess of the body such that at least a portion of the modular insert is positioned between the openings of the body. The modular insert is formed separately from the tibial prosthesis and has a porous outer surface to promote tissue ingrowth.
    Type: Grant
    Filed: July 29, 2019
    Date of Patent: January 11, 2022
    Assignee: Howmedica Osteonics Corp.
    Inventors: Damon J. Servidio, G. Douglas Letson, Arlen Dale Hanssen, Michael A. McGovern, Jennifer Grunden
  • Publication number: 20200038192
    Abstract: An orthopedic assembly includes a tibial prosthesis that includes a body that defines an anterior side and a posterior side. The body further includes a recess in the anterior side of the joint prosthesis and a plurality of openings that extend through the body from the anterior side to the posterior side thereof. At least a first and second opening of the openings are positioned at respective lateral and medial sides of a longitudinal axis of the tibial prosthesis. A modular insert is positioned within the recess of the body such that at least a portion of the modular insert is positioned between the openings of the body. The modular insert is formed separately from the tibial prosthesis and has a porous outer surface to promote tissue ingrowth.
    Type: Application
    Filed: July 29, 2019
    Publication date: February 6, 2020
    Inventors: Damon J. Servidio, G. Douglas Letson, Arlen Dale Hanssen, Michael A. McGovern, Jennifer Grunden
  • Patent number: 9005305
    Abstract: Methods and apparatuses for attaching tissue structures to orthopaedic implants. In one exemplary embodiment, the methods and apparatuses are used to attach soft tissue and/or bone to a proximal tibial implant. In another exemplary embodiment, the methods and apparatuses are used to attach soft tissue and/or bone to a proximal femoral implant.
    Type: Grant
    Filed: March 26, 2012
    Date of Patent: April 14, 2015
    Assignee: Zimmer, Inc.
    Inventors: John E. Meyers, Robert E. Montgomery, Dennis R. Aquilo, Douglas G. Branscome, Kelly A. Timmons, Kimberly Les, Peter F. Choong, Peter E. Darrigan, Luke Vaughan, Ernest U. Conrad, Jay S. Wunder, David H. Anderson, Kevin S. Cook, G. Douglas Letson, Gary D. Bos
  • Patent number: 8926708
    Abstract: An implant assembly comprises a stem and an augment. The augment includes a porous outer region which is integrally formed onto a solid inner region. The augment further includes, solid posts integrally formed on the solid inner region and extend through the porous outer region to the outer surface of the augment. The posts are integrally formed with and surrounded by the porous region and are designed to allow assembly of the augment to the stem without damaging the structure of the porous region. A method of attaching the augment is described, wherein a tool is designed to grip to posts of the augment and apply loads through these posts during assembly.
    Type: Grant
    Filed: August 14, 2013
    Date of Patent: January 6, 2015
    Assignee: Howmedica Osteonics Corp.
    Inventors: Damon J. Servidio, G. Douglas Letson
  • Publication number: 20130326859
    Abstract: An implant assembly comprises a stem and an augment. The augment includes a porous outer region which is integrally formed onto a solid inner region. The augment further includes, solid posts integrally formed on the solid inner region and extend through the porous outer region to the outer surface of the augment. The posts are integrally formed with and surrounded by the porous region and are designed to allow assembly of the augment to the stem without damaging the structure of the porous region. A method of attaching the augment is described, wherein a tool is designed to grip to posts of the augment and apply loads through these posts during assembly.
    Type: Application
    Filed: August 14, 2013
    Publication date: December 12, 2013
    Applicant: Howmedica Osteonics Corp.
    Inventors: Damon J. Servidio, G. Douglas Letson
  • Patent number: 8535386
    Abstract: An implant assembly comprises a stem and an augment. The augment includes a porous outer region which is integrally formed onto a solid inner region. The augment further includes, solid posts integrally formed on the solid inner region and extend through the porous outer region to the outer surface of the augment. The posts are integrally formed with and surrounded by the porous region and are designed to allow assembly of the augment to the stem without damaging the structure of the porous region. A method of attaching the augment is described, wherein a tool is designed to grip to posts of the augment and apply loads through these posts during assembly.
    Type: Grant
    Filed: October 21, 2010
    Date of Patent: September 17, 2013
    Assignee: Howmedica Osteonics Corp.
    Inventors: Damon J. Servidio, G. Douglas Letson
  • Publication number: 20120191207
    Abstract: Methods and apparatuses for attaching tissue structures to orthopaedic implants. In one exemplary embodiment, the methods and apparatuses are used to attach soft tissue and/or bone to a proximal tibial implant. In another exemplary embodiment, the methods and apparatuses are used to attach soft tissue and/or bone to a proximal femoral implant.
    Type: Application
    Filed: March 26, 2012
    Publication date: July 26, 2012
    Applicant: ZIMMER, INC.
    Inventors: John E. Meyers, Robert E. Montgomery, Dennis R. Aquilo, Douglas G. Branscome, Kelly A. Timmons, Kimberly Les, Peter F. Choong, Peter E. Darrigan, Luke Vaughan, Ernest U. Conrad, Jay S. Wunder, David H. Anderson, Kevin S. Cook, G. Douglas Letson, Gary D. Bos
  • Publication number: 20120101591
    Abstract: An implant assembly comprises a stem and an augment. The augment includes a porous outer region which is integrally formed onto a solid inner region. The augment further includes, solid posts integrally formed on the solid inner region and extend through the porous outer region to the outer surface of the augment. The posts are integrally formed with and surrounded by the porous region and are designed to allow assembly of the augment to the stem without damaging the structure of the porous region. A method of attaching the augment is described, wherein a tool is designed to grip to posts of the augment and apply loads through these posts during assembly.
    Type: Application
    Filed: October 21, 2010
    Publication date: April 26, 2012
    Applicant: HOWMEDICA OSTEONICS CORP.
    Inventors: Damon J. Servidio, G. Douglas Letson
  • Publication number: 20110009973
    Abstract: Methods and apparatuses for attaching tissue structures to orthopaedic implants. In one exemplary embodiment, the methods and apparatuses are used to attach soft tissue and/or bone to a proximal tibial implant. In another exemplary embodiment, the methods and apparatuses are used to attach soft tissue and/or bone to a proximal femoral implant.
    Type: Application
    Filed: November 13, 2009
    Publication date: January 13, 2011
    Applicant: ZIMMER, INC.
    Inventors: John E. Meyers, Robert E. Montgomery, Dennis R. Aquilo, Douglas G. Branscome, Clarence M. Panchison, Kelly A. Timmons, Kimberly Les, Peter F. Choong, Peter E. Darrigan, Lawrence F. Peek, Luke Vaughan, Ernust U. Conrad, Jay S. Wunder, David H. Anderson, Kevin S. Cook, Peter S. Walker, G. Douglas Letson, Mary I. O'Connor, Gary D. Bos
  • Patent number: 6773461
    Abstract: A constrained prosthetic knee having a modular hinge post and a rotating bearing. A cannulated hinge post is rotatably connected to the femoral component of the knee prosthesis so that a hinge post extension may be anteriorly positioned through the hinge post and into the tibial component of the knee prosthesis, after positioning of the femoral component in the femur and the tibial component in the tibia. The hinge post is preassembled to the femoral component so that such assembly is not required during the implantation procedure. A meniscal component forming the rotating bearing of the knee prosthesis is packaged together with the hinge post extension so that the appropriate hinge post extension is readily available.
    Type: Grant
    Filed: September 4, 2002
    Date of Patent: August 10, 2004
    Assignee: Zimmer Technology, Inc.
    Inventors: John E. Meyers, G. Douglas Letson, Russell Windsor, Vincent A. Webster, Bill N. Sisk, Bill H. Haywood, Adam Griner, Michael Cook, Rodney L. Bays, Jerry L. Aikins, Marvin Figueroa
  • Publication number: 20030009228
    Abstract: A constrained prosthetic knee having a modular hinge post and a rotating bearing. A cannulated hinge post is rotatably connected to the femoral component of the knee prosthesis so that a hinge post extension may be anteriorly positioned through the hinge post and into the tibial component of the knee prosthesis, after positioning of the femoral component in the femur and the tibial component in the tibia. The hinge post is preassembled to the femoral component so that such assembly is not required during the implantation procedure. A meniscal component forming the rotating bearing of the knee prosthesis is packaged together with the hinge post extension so that the appropriate hinge post extension is readily available.
    Type: Application
    Filed: September 4, 2002
    Publication date: January 9, 2003
    Inventors: John E. Meyers, G. Douglas Letson, Russell Windsor, Vincent A. Webster, Bill N. Sisk, Bill H. Haywood, Adam Griner, Michael Cook, Rodney L. Bays, Jerry L. Aikins, Marvin Figueroa
  • Patent number: 6485519
    Abstract: A constrained prosthetic knee having a modular hinge post and a rotating bearing. A cannulated hinge post is rotatably connected to the femoral component of the knee prosthesis so that a hinge post extension may be anteriorly positioned through the hinge post and into the tibial component of the knee prosthesis, after positioning of the femoral component in the femur and the tibial component in the tibia. The hinge post is preassembled to the femoral component so that such assembly is not required during the implantation procedure. A meniscal component forming the rotating bearing of the knee prosthesis is packaged together with the hinge post extension so that the appropriate hinge post extension is readily available.
    Type: Grant
    Filed: January 29, 2001
    Date of Patent: November 26, 2002
    Assignee: Bristol-Myers Squibb Company
    Inventors: John E. Meyers, G. Douglas Letson, Russell Windsor, Vincent A. Webster, Bill N. Sisk, Bill H. Haywood, Adam Griner, Michael Cook, Rodney L. Bays, Jerry L. Aikins, Marvin Figueroa
  • Publication number: 20020103541
    Abstract: A constrained prosthetic knee having a modular hinge post and a rotating bearing. A cannulated hinge post is rotatably connected to the femoral component of the knee prosthesis so that a hinge post extension may be anteriorly positioned through the hinge post and into the tibial component of the knee prosthesis, after positioning of the femoral component in the femur and the tibial component in the tibia. The hinge post is preassembled to the femoral component so that such assembly is not required during the implantation procedure. A meniscal component forming the rotating bearing of the knee prosthesis is packaged together with the hinge post extension so that the appropriate hinge post extension is readily available.
    Type: Application
    Filed: January 29, 2001
    Publication date: August 1, 2002
    Inventors: John E. Meyers, G. Douglas Letson, Russell Windsor, Vincent A. Webster, Bill N. Sisk, Bill H. Haywood, Adam Griner, Michael Cook, Rodney L. Bays, Jerry L. Aikins, Marvin Figueroa