Patents by Inventor Brian H. Thomas

Brian H. Thomas 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: 9707316
    Abstract: Polymer compositions having one or more antioxidants providing high crosslink density and improved oxidation resistance to the polymer composition and methods for making same. Such polymer compositions can be used to make orthopedic implants.
    Type: Grant
    Filed: May 9, 2016
    Date of Patent: July 18, 2017
    Assignee: Zimmer, Inc.
    Inventors: Brian H. Thomas, Dean M. Acker, Ray Gsell, Norman Stark
  • Patent number: 9549820
    Abstract: A prosthetic glenoid component for replicating the behavior of a patient's natural glenoid includes a rim that replicates the patient's natural glenoid labrum.
    Type: Grant
    Filed: June 25, 2010
    Date of Patent: January 24, 2017
    Assignee: Zimmer, Inc.
    Inventors: Matthew L. Mroczkowski, Russell M. Parrott, Brian H. Thomas
  • Publication number: 20160250381
    Abstract: The present disclosure is directed to polymer compositions having one or more antioxidants providing high crosslink density and improved oxidation resistance to the polymer composition and methods for making same. Such polymer compositions can be advantageously used to make orthopedic implants. The disclosure also provides methods for selecting antioxidants providing desirable properties to the polymer composition. In one embodiment, a measure of OIT can be used to select the antioxidant and antioxidant blend. In another embodiment, measurements of OIT and OI-rate can be used to select the one or more antioxidants. In another embodiment, the product of OIT and crosslink density can be calculated to predict wear resistance and oxidation resistance of a polymer composition including one or more antioxidants.
    Type: Application
    Filed: May 9, 2016
    Publication date: September 1, 2016
    Inventors: Brian H. Thomas, Dean M. Acker, Ray Gsell, Norman Stark
  • Patent number: 9370602
    Abstract: The present disclosure is directed to polymer compositions having one or more antioxidants providing high crosslink density and improved oxidation resistance to the polymer composition and methods for making same. Such polymer compositions can be advantageously used to make orthopedic implants. The disclosure also provides methods for selecting antioxidants providing desirable properties to the polymer composition. In one embodiment, a measure of OIT can be used to select the antioxidant and antioxidant blend. In another embodiment, measurements of OIT and OI-rate can be used to select the one or more antioxidants. In an other embodiment, the product of OIT and crosslink density can be calculated to predict wear resistance and oxidation resistance of a polymer composition including one or more antioxidants.
    Type: Grant
    Filed: December 5, 2011
    Date of Patent: June 21, 2016
    Assignee: Zimmer, Inc.
    Inventors: Brian H. Thomas, Dean M. Acker, Ray Gsell, Norman Stark
  • Patent number: 9289302
    Abstract: Various embodiments of mosaicplasty constructs and methods for implanting the constructs into anatomical structures. The mosaicplasty constructs may be formed from artificial materials and may include a hard articulating portion and a relatively softer elastic, support portion. The mosaicplasty constructs may include bone ingrowth materials to facilitate ingrowth of bone and other tissues into the construct. The mosaicplasty constructs may also be at least partially formed of hydrogel materials.
    Type: Grant
    Filed: July 20, 2009
    Date of Patent: March 22, 2016
    Assignee: Zimmer, Inc.
    Inventors: Brian H. Thomas, Steven J. Charlebois, Donald Yakimicki, James Mason, Stephen H. Spiegelberg, Gavin Braithwaite, Gareth McKinley, Orhun Muratoglu
  • Patent number: 9248020
    Abstract: Monoblock orthopedic and/or dental implants are disclosed. The monoblock implants include a ceramic articulating surface and an osseointegrative bone-contacting surface. Methods of making such implants also disclosed.
    Type: Grant
    Filed: November 16, 2011
    Date of Patent: February 2, 2016
    Assignee: Zimmer, Inc.
    Inventors: Oludele O. Popoola, David M. Miller, Jeffrey P. Anderson, Brian H. Thomas
  • Patent number: 9192476
    Abstract: An orthopedic implant including an articulation portion having a pyrolytic carbon bearing surface and a porous bone on- or in-growth structure, and methods of making the same.
    Type: Grant
    Filed: March 5, 2014
    Date of Patent: November 24, 2015
    Assignee: Zimmer, Inc.
    Inventors: Brian H. Thomas, Oludele O. Popoola, Joseph R. Vargas, Steven Seelman, Jeffrey P. Anderson
  • Patent number: 8927616
    Abstract: Methods of forming polymeric articles using plasma treated polymer resins, and orthopedic implants comprising a polymeric article wherein the polymeric article has reactive groups bonded to polymer molecules in an interior region of the polymeric article.
    Type: Grant
    Filed: November 2, 2011
    Date of Patent: January 6, 2015
    Assignee: Zimmer, Inc.
    Inventors: Brian H. Thomas, Donald L. Yakimicki, Oludele O. Popoola, Michael Wallick
  • Patent number: 8771369
    Abstract: The present invention relates to polymers and, specifically, to surface modification of polymers. In one exemplary embodiment, the present invention increases the bond strength of UHMWPE components to PMMA bone cement by creating a chemical bond between the UHMWPE components and the PMMA bone cement. Specifically, in one exemplary embodiment, a surface of the UHMWPE component that is to be bonded to PMMA bone cement is treated with an oxidizing agent, such as an aqueous solution of hydrogen peroxide. In one exemplary embodiment, the UHMWPE component is treated with hydrogen peroxide by swabbing the surface of the UHMWPE component with the hydrogen peroxide solution. The surface of the UHMWPE component may then be dried and PMMA bone cement applied to the surface of the UHMWPE component.
    Type: Grant
    Filed: March 30, 2010
    Date of Patent: July 8, 2014
    Assignee: Zimmer, Inc.
    Inventors: Donald L. Yakimicki, Brian H. Thomas, Lynn A. Kirkpatrick
  • Publication number: 20140188244
    Abstract: An orthopedic implant including an articulation portion having a pyrolytic carbon bearing surface and a porous bone on- or in-growth structure, and methods of making the same.
    Type: Application
    Filed: March 5, 2014
    Publication date: July 3, 2014
    Applicant: Zimmer, Inc.
    Inventors: Brian H. Thomas, Oludele O. Popoola, Joseph R. Vargas, Steven Seelman, Jeffrey P. Anderson
  • Publication number: 20140031496
    Abstract: Methods of forming polymeric articles using plasma treated polymer resins, and orthopedic implants comprising a polymeric article wherein the polymeric article has reactive groups bonded to polymer molecules in an interior region of the polymeric article.
    Type: Application
    Filed: November 2, 2011
    Publication date: January 30, 2014
    Applicant: Zimmer, Inc.
    Inventors: Brian H. Thomas, Donald L. Yakimicki, Oludele O. Popoola, Michael Wallick
  • Publication number: 20140024736
    Abstract: Modified polymeric articles having modifying agents dispersed within and bonded to an interior region of the article. Methods of modifying polymer materials used to form polymeric articles, and methods of making polymeric articles from polymer particles having modifying agents bonded thereto.
    Type: Application
    Filed: November 2, 2011
    Publication date: January 23, 2014
    Applicant: Zimmer, Inc.
    Inventors: Brian H. Thomas, Dirk Pletcher, Donald L. Yakimicki
  • Publication number: 20140005293
    Abstract: The present disclosure is directed to polymer compositions having one or more antioxidants providing high crosslink density and improved oxidation resistance to the polymer composition and methods for making same. Such polymer compositions can be advantageously used to make orthopedic implants. The disclosure also provides methods for selecting antioxidants providing desirable properties to the polymer composition. In one embodiment, a measure of OIT can be used to select the antioxidant and antioxidant blend. In another embodiment, measurements of OIT and OI-rate can be used to select the one or more antioxidants. In an other embodiment, the product of OIT and crosslink density can be calculated to predict wear resistance and oxidation resistance of a polymer composition including one or more antioxidants.
    Type: Application
    Filed: December 5, 2011
    Publication date: January 2, 2014
    Applicant: Zimmer, Inc.
    Inventors: Brian H. Thomas, Dean M. Acker, Ray Gsell, Norman Stark
  • Publication number: 20140005796
    Abstract: Monoblock orthopedic and/or dental implants are disclosed. The monoblock implants include a ceramic articulating surface and an osseointegrative bone-contacting surface. Methods of making such implants also disclosed.
    Type: Application
    Filed: November 16, 2011
    Publication date: January 2, 2014
    Applicant: Zimmer, Inc.
    Inventors: Oludele O. Popoola, David M. Miller, Jeffrey P. Anderson, Brian H. Thomas
  • Publication number: 20120313270
    Abstract: Injection molding units and methods of delivering a cooled molding material to portions of an injection molding unit are disclosed. An injection molding unit can comprise a barrel having a feed zone, a feeding portion configured for dispensing a molding material into the feed zone, and a cooling apparatus configured for cooling at least one of the feed zone or the feeding portion to a temperature that is selected to avoid or reduce bridging or obstruction of the molding material. The cooling apparatus can include a jacket configured to cover at least a portion of the feed zone or the feeding portion. The injection molding unit can further comprise an insulation shield. A method can comprise feeding the molding material into the feed zone and cooling the molding material prior to dispensing it into the feed zone or while it is in the feed zone.
    Type: Application
    Filed: April 11, 2012
    Publication date: December 13, 2012
    Applicant: Zimmer, Inc.
    Inventors: Michael Wallick, Brian H. Thomas, Brion R. Mimnaugh
  • Patent number: 8034362
    Abstract: The present invention provides a hydrogel composition comprising at least one polymer with functional groups including alcohol groups, acid groups, and amide groups and where the ratio of the functional alcohol groups to functional acid groups in the hydrogel composition ranges from about 16:1 to about 3:2. The present invention also provides a method of repairing an articulating surface in a body using the inventive composition. The inventive hydrogel composition is created by blending two or more polymers to achieve the desired ratio of functional groups, reacting at least one polymer with a reagent that results in the formation of alcohol, acid, and/or amide functional groups of the desired ratio, and/or polymerizing at least one monomer to achieve the desired ratio of functional groups.
    Type: Grant
    Filed: January 4, 2008
    Date of Patent: October 11, 2011
    Assignee: Zimmer, Inc.
    Inventors: Brian H. Thomas, Donald L. Yakimicki, Steven Charlebois, Laura L. Borgstede, Niels Abt, James J. Mason, Oludele Popoola
  • Patent number: 7947784
    Abstract: This invention provides methods to form modified hydrogel materials using reactive compounding. The method includes mixing a hydrogel material with a plasticizer in a compounding apparatus. During mixing, a reactive chemical compound is added to the mixture that reacts with the hydrogel material to form a modified hydrogel material.
    Type: Grant
    Filed: November 16, 2007
    Date of Patent: May 24, 2011
    Assignee: Zimmer, Inc.
    Inventors: Brian H. Thomas, Donald L. Yakimicki, Steven Charlebois
  • Publication number: 20100331990
    Abstract: A prosthetic glenoid component for replicating the behavior of a patient's natural glenoid includes a rim that replicates the patient's natural glenoid labrum.
    Type: Application
    Filed: June 25, 2010
    Publication date: December 30, 2010
    Applicant: ZIMMER, INC.
    Inventors: Matthew L. Mroczkowski, Russell M. Parrott, Brian H. Thomas
  • Publication number: 20100249945
    Abstract: The present invention relates to polymers and, specifically, to surface modification of polymers. In one exemplary embodiment, the present invention increases the bond strength of UHMWPE components to PMMA bone cement by creating a chemical bond between the UHMWPE components and the PMMA bone cement. Specifically, in one exemplary embodiment, a surface of the UHMWPE component that is to be bonded to PMMA bone cement is treated with an oxidizing agent, such as an aqueous solution of hydrogen peroxide. In one exemplary embodiment, the UHMWPE component is treated with hydrogen peroxide by swabbing the surface of the UHMWPE component with the hydrogen peroxide solution. The surface of the UHMWPE component may then be dried and PMMA bone cement applied to the surface of the UHMWPE component.
    Type: Application
    Filed: March 30, 2010
    Publication date: September 30, 2010
    Applicant: ZIMMER, INC.
    Inventors: Donald Yakimicki, Brian H. Thomas, Lynn A. Kirkpatrick
  • Publication number: 20100161073
    Abstract: Various embodiments of mosaicplasty constructs and methods for implanting the constructs into anatomical structures. The mosaicplasty constructs may be formed from artificial materials and may include a hard articulating portion and a relatively softer elastic, support portion. The mosaicplasty constructs may include bone ingrowth materials to facilitate ingrowth of bone and other tissues into the construct. The mosaicplasty constructs may also be at least partially formed of hydrogel materials.
    Type: Application
    Filed: July 20, 2009
    Publication date: June 24, 2010
    Applicant: ZIMMER, INC.
    Inventors: Brian H. Thomas, Steven J. Charlebois, Donald Yakimicki, James Mason, Stephen H. Spiegelberg, Gavin Braithwaite, Gareth McKinley, Orhun Muratoglu