Patents by Inventor Michael A. Croxton
Michael A. Croxton 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).
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Patent number: 11096798Abstract: A modular acetabular cup assembly for use with multiple bearing liners is disclosed. The acetabular cup assembly includes a shell having a tapered inner wall and two circumferential grooves. The shell may be used with polyethylene, ceramic, metal, and other types of liners.Type: GrantFiled: July 2, 2019Date of Patent: August 24, 2021Assignee: Smith & Nephew, Inc.Inventors: Charles Wayne Allen, Jason A. Capriotti, Michael A. Croxton, Roger William Frank Ashton, Justin M. Waugh, Jeffrey J. Shea, Sureshkumar Srinivasan, William L. Waltersdorff, Terry W. McLean
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Publication number: 20210145605Abstract: A modular acetabular cup assembly for use with multiple bearing liners is disclosed. The acetabular cup assembly includes a shell having a tapered inner wall and two circumferential grooves. The shell may be used with polyethylene, ceramic, metal, and other types of liners.Type: ApplicationFiled: January 28, 2021Publication date: May 20, 2021Inventors: Charles Wayne Allen, Jason A. Capriotti, Michael A. Croxton, Roger William Frank Ashton, Justin M. Waugh, Jeffrey J. Shea, Sureshkumar Srinivasan, William L. Waltersdorff, Terry W. McLean
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Publication number: 20210145604Abstract: A modular acetabular cup assembly for use with multiple bearing liners is disclosed. The acetabular cup assembly includes a shell having a tapered inner wall and two circumferential grooves. The shell may be used with polyethylene, ceramic, metal, and other types of liners.Type: ApplicationFiled: January 28, 2021Publication date: May 20, 2021Inventors: Charles Wayne Allen, Jason A. Capriotti, Michael A. Croxton, Roger William Frank Ashton, Justin M. Waugh, Jeffrey J. Shea, Sureshkumar Srinivasan, William L. Waltersdorff, Terry W. McLean
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Publication number: 20190321196Abstract: A modular acetabular cup assembly for use with multiple bearing liners is disclosed. The acetabular cup assembly includes a shell having a tapered inner wall and two circumferential grooves. The shell may be used with polyethylene, ceramic, metal, and other types of liners.Type: ApplicationFiled: July 2, 2019Publication date: October 24, 2019Inventors: Charles Wayne Allen, Jason A. Capriotti, Michael A. Croxton, Roger William Frank Ashton, Justin M. Waugh, Jeffrey J. Shea, Sureshkumar Srinivasan, William L. Waltersdorff, Terry W. McLean
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Patent number: 10383745Abstract: A modular acetabular cup assembly for use with multiple bearing liners is disclosed. The acetabular cup assembly includes a shell having a tapered inner wall and two circumferential grooves. The shell may be used with polyethylene, ceramic, metal, and other types of liners.Type: GrantFiled: October 7, 2016Date of Patent: August 20, 2019Assignee: Smith & Nephew, Inc.Inventors: Charles Wayne Allen, Jason A. Capriotti, Michael A. Croxton, Roger William Frank Ashton, Justin M. Waugh, Jeffrey J. Shea, Sureshkumar Srinivasan, William L. Waltersdorff, Terry W. McLean
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Publication number: 20170020688Abstract: A modular acetabular cup assembly for use with multiple bearing liners is disclosed. The acetabular cup assembly includes a shell having a tapered inner wall and two circumferential grooves. The shell may be used with polyethylene, ceramic, metal, and other types of liners.Type: ApplicationFiled: October 7, 2016Publication date: January 26, 2017Inventors: Charles Wayne Allen, Jason A. Capriotti, Michael A. Croxton, Roger William Frank Ashton, Justin M. Waugh, Jeffrey J. Shea, Sureshkumar Srinivasan, William L. Waltersdorff, Terry W. McLean
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Patent number: 9463093Abstract: A modular acetabular cup assembly (10, 100, 200, 300, 350) for use with multiple bearing liners (32, 110, 212, 310, 354) is disclosed. The acetabular cup assembly includes a shell (12) having a tapered inner wall (28) and two circumferential grooves (24, 26). The shell (12) may be used with polyethylene, ceramic, metal, and other types of liners.Type: GrantFiled: May 2, 2013Date of Patent: October 11, 2016Assignee: Smith & Nephew, Inc.Inventors: Charles Wayne Allen, Jason A. Capriotti, Michael A. Croxton, Roger William Frank Ashton, Justin M Waugh, Jeffrey J Shea, Sureshkumar Srinivasan, William L Waltersdorff, Terry W Mclean
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Patent number: 9463094Abstract: A modular acetabular cup assembly (10, 100, 200, 300, 350) for use with multiple bearing liners (32, 110, 212, 310, 354) is disclosed. The acetabular cup assembly includes a shell (12) having a tapered inner wall (28) and two circumferential grooves (24, 26). The shell (12) may be used with polyethylene, ceramic, metal, and other types of liners.Type: GrantFiled: February 4, 2014Date of Patent: October 11, 2016Assignee: Smith & Nephew, Inc.Inventors: Charles Wayne Allen, Jason A. Capriotti, Michael A. Croxton, Roger William Frank Ashton, Justin M. Waugh, Jeffrey J. Shea, Sureshkumar Srinivasan, William L. Waltersdorff, Terry W. McLean
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Patent number: 8751198Abstract: A method for forming an implant for a bone including the steps of generating a first general shape for the implant having a length extending along a long axis of the bone, determining an area moment of inertia of a cross section of the implant, determining an area moment of inertia for a cross section of bone coplanar to the cross section of the implant, calculating a percent stress shielding from the area moments of inertia of the implant and the bone, comparing the calculated percent stress shielding to a preset threshold, and iteratively generating additional general shapes for the implant by locally adjusting the cross section of the implant until the calculated percent stress shielding meets the preset threshold.Type: GrantFiled: September 20, 2007Date of Patent: June 10, 2014Assignee: Smith & Nephew, Inc.Inventors: David C. Kelman, Michael A. Croxton, Charles Wayne Allen, William L. Waltersdorff
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Publication number: 20140156018Abstract: A modular acetabular cup assembly (10, 100, 200, 300, 350) for use with multiple bearing liners (32, 110, 212, 310, 354) is disclosed. The acetabular cup assembly includes a shell (12) having a tapered inner wall (28) and two circumferential grooves (24, 26). The shell (12) may be used with polyethylene, ceramic, metal, and other types of liners.Type: ApplicationFiled: February 4, 2014Publication date: June 5, 2014Applicant: SMITH & NEPHEW, INC.Inventors: Charles Wayne ALLEN, Jason A. CAPRIOTTI, Michael A. CROXTON, Roger William Frank ASHTON, Justin M. WAUGH, Jeffrey J. SHEA, Sureshkumar SRINIVASAN, William L. WALTERSDORFF, Terry W. MCLEAN
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Patent number: 8679187Abstract: A modular acetabular cup assembly (10, 100, 200, 300, 350) for use with multiple bearing liners (32, 110, 212, 310, 354) is disclosed. The acetabular cup assembly includes a shell (12) having a tapered inner wall (28) and two circumferential grooves (24, 26). The shell (12) may be used with polyethylene, ceramic, metal, and other types of liners.Type: GrantFiled: October 18, 2006Date of Patent: March 25, 2014Assignee: Smith & Nephew, Inc.Inventors: Charles Wayne Allen, Jason A. Capriotti, Michael A. Croxton, Roger William Frank Ashton, Justin M. Waugh, Jeffrey J. Shea, Sureshkumar Srinivasan, William L. Waltersdorff, Terry W. McLean
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Publication number: 20130245781Abstract: A modular acetabular cup assembly (10, 100, 200, 300, 350) for use with multiple bearing liners (32, 110, 212, 310, 354) is disclosed. The acetabular cup assembly includes a shell (12) having a tapered inner wall (28) and two circumferential grooves (24, 26). The shell (12) may be used with polyethylene, ceramic, metal, and other types of liners.Type: ApplicationFiled: May 2, 2013Publication date: September 19, 2013Applicant: SMITH & NEPHEW, INC.Inventors: Charles Wayne ALLEN, Jason A. CAPRIOTTI, Michael A. CROXTON, Roger William Frank ASHTON, Justin M. WAUGH, Jeffrey J. SHEA, Sureshkumar SRINIVASAN, William L. WALTERSDORFF, Terry W. MCLEAN
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Publication number: 20110009975Abstract: A modular acetabular cup assembly (10, 100, 200, 300, 350) for use with multiple bearing liners (32, 110, 212, 310, 354) is disclosed. The acetabular cup assembly includes a shell (12) having a tapered inner wall (28) and two circumferential grooves (24, 26). The shell (12) may be used with polyethylene, ceramic, metal, and other types of liners.Type: ApplicationFiled: October 18, 2006Publication date: January 13, 2011Applicant: SMITH & NEPHEW, INC.Inventors: Charles Wayne Allen, Jason A. Capriotti, Michael A. Croxton, Roger William Frank Ashton, Justin M. Waugh, Jeffrey J. Shea, Sureshkumar Srinivasan, William L. Waltersdorff, Terry W. McLean
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Publication number: 20100131245Abstract: A method for forming an implant for a bone comprises the step (20) of generating a first general shape for the implant having a length extending along a long axis of the bone. A step (40) determines an area moment of inertia of a cross section of the implant. Step (40) also determines an area moment of inertia for a cross section of bone coplanar to the cross section of the implant. A percent stress shielding is calculated (50) from the area moments of inertia of the implant and the bone. A step (60) compares the calculated percent stress shielding to a preset threshold. Iteratively, additional general shapes are generated (80) for the implant by locally adjusting the cross section of the implant until the calculated percent stress shielding meets the preset threshold.Type: ApplicationFiled: September 20, 2007Publication date: May 27, 2010Applicant: SMITH & NEPHEW, INC.Inventors: David C. Kelman, Michael A. Croxton, Charles Wayne Allen, William L. Waltersdorff
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Patent number: 7682398Abstract: There is provided an acetabular shell liner, and particularly a constrained liner, having a variable rim surface geometry to improve the range of motion of a femoral component within the liner and decrease the incidence of dislocation and subluxation. There are also provided methods of making and using the acetabular shell liner. Prosthetic devices, and particularly hip joint prostheses, containing the acetabular shell liner having a variable rim surface geometry are also provided.Type: GrantFiled: November 28, 2006Date of Patent: March 23, 2010Assignee: Smith & Nephew, Inc.Inventors: Michael A. Croxton, Brian W. McKinnon
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Publication number: 20070106389Abstract: There is provided an acetabular shell liner, and particularly a constrained liner, having a variable rim surface geometry to improve the range of motion of a femoral component within the liner and decrease the incidence of dislocation and subluxation. There are also provided methods of making and using the acetabular shell liner. Prosthetic devices, and particularly hip joint prostheses, containing the acetabular shell liner having a variable rim surface geometry are also provided.Type: ApplicationFiled: November 28, 2006Publication date: May 10, 2007Applicant: Smith & Nephew, Inc.Inventors: Michael Croxton, Brian McKinnon