Patents by Inventor Steven A. Zawadzki
Steven A. Zawadzki 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: 10426623Abstract: A hip stem prosthesis is provided for treating a deficient hip joint.Type: GrantFiled: April 7, 2017Date of Patent: October 1, 2019Assignee: Zimmer, Inc.Inventors: Natalia Fridshtand, Douglas W. Gabel, Steven Charlebois, David L. Glass, Steven Zawadzki, Jeffrey P. Matney
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Publication number: 20170209276Abstract: A hip stem prosthesis is provided for treating a deficient hip joint.Type: ApplicationFiled: April 7, 2017Publication date: July 27, 2017Inventors: Natalia Fridshtand, Douglas W. Gabel, Steven Charlebois, David L. Glass, Steven Zawadzki, Jeffrey P. Matney
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Patent number: 9656358Abstract: A method for attaching a porous metal layer to a dense metal substrate, wherein the method is particularly useful in forming orthopedic implants such as femoral knee components, femoral hip components, and/or acetabular cups. The method, in one embodiment thereof, comprises providing a solid metal substrate; providing a porous metal structure; contouring a surface of the porous metal structure; placing the porous structure against the substrate such that the contoured surface of the porous metal structure is disposed against the substrate, thereby forming an assembly; applying heat and pressure to the assembly in conjunction with thermal expansion of the substrate in order to metallurgically bond the porous structure and the substrate; and removing mass from the substrate after the porous structure is bonded to the substrate, thereby finish processing the assembly.Type: GrantFiled: April 15, 2013Date of Patent: May 23, 2017Assignee: Zimmer, Inc.Inventors: Steven Charlebois, Leslie N. Gilbertson, Michael E Hawkins, Dana Medlin, H. Ravindranath Shetty, Steven Zawadzki
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Patent number: 9636227Abstract: A hip stem prosthesis is provided for treating a deficient hip joint.Type: GrantFiled: October 9, 2014Date of Patent: May 2, 2017Assignee: Zimmer, Inc.Inventors: Natalia Fridshtand, Douglas W. Gabel, Steven Charlebois, David L. Glass, Steven Zawadzki, Jeffrey P. Matney
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Patent number: 9439779Abstract: A composite interbody vertebral implant for facilitating fusion of adjacent vertebrae. The implant includes a first endplate of a porous metal material and a second endplate of a porous metal material which are configured to allow bone in-growth. The implant also includes a polymeric body positioned between and bonded to the first and second endplates such that polymeric material of the polymeric body is impregnated into pores of the first and second endplates to bond the components together. The implant may include a cavity extending through the composite implant configured to receive bone growth material to facilitate fusion between a first vertebra and a second vertebra.Type: GrantFiled: September 15, 2014Date of Patent: September 13, 2016Assignee: Zimmer Spine, Inc.Inventors: Kai Zhang, Christopher J. Valois, Zhibin Fang, Jeffrey A. Bassett, Steven A. Zawadzki, David C. Kirt, Steven E. Spangle
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Patent number: 8985430Abstract: A method for attaching a porous metal layer to a dense metal substrate, wherein the method is particularly useful in forming orthopedic implants such as femoral knee components, femoral hip components, and/or acetabular cups. The method, in one embodiment thereof, comprises providing a solid metal substrate; providing a porous metal structure; contouring a surface of the porous metal structure; placing the porous structure against the substrate such that the contoured surface of the porous metal structure is disposed against the substrate, thereby forming an assembly; applying heat and pressure to the assembly in conjunction with thermal expansion of the substrate in order to metallurgically bond the porous structure and the substrate; and removing mass from the substrate after the porous structure is bonded to the substrate, thereby finish processing the assembly.Type: GrantFiled: May 1, 2012Date of Patent: March 24, 2015Assignee: Zimmer, Inc.Inventors: Steven J. Charlebois, Leslie N. Gilbertson, Michael E. Hawkins, Dana J. Medlin, H. Ravindranath Shetty, Steven A. Zawadzki
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Publication number: 20150025649Abstract: A hip stem prosthesis is provided for treating a deficient hip joint.Type: ApplicationFiled: October 9, 2014Publication date: January 22, 2015Inventors: Natalia Fridshtand, Douglas W. Gabel, Steven Charlebois, David L. Glass, Steven Zawadzki, Jeffrey P. Matney
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Publication number: 20150005885Abstract: A composite interbody vertebral implant for facilitating fusion of adjacent vertebrae. The implant includes a first endplate of a porous metal material and a second endplate of a porous metal material which are configured to allow bone in-growth. The implant also includes a polymeric body positioned between and bonded to the first and second endplates such that polymeric material of the polymeric body is impregnated into pores of the first and second endplates to bond the components together. The implant may include a cavity extending through the composite implant configured to receive bone growth material to facilitate fusion between a first vertebra and a second vertebra.Type: ApplicationFiled: September 15, 2014Publication date: January 1, 2015Inventors: Kai Zhang, Christopher J. Valois, Zhibin Fang, Jeffrey A. Bassett, Steven A. Zawadzki, David C. Kirt, Steven E. Spangle
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Patent number: 8858646Abstract: A hip prosthesis is provided for insertion into a femur. In one exemplary embodiment, the hip prosthesis includes a stem having a proximal end, a distal end, and a longitudinal axis. This stem may include anterior and posterior locking surfaces which diverge away from the longitudinal axis. A shank portion may extend distally from the anterior and posterior locking surfaces and converge at an angle distally toward the longitudinal axis.Type: GrantFiled: May 7, 2012Date of Patent: October 14, 2014Assignee: Zimmer, Inc.Inventors: Natalia Fridshtand, Douglas W. Gabel, Steven J. Charlebois, David L. Glass, Steven A. Zawadzki, Jeffrey P. Matney
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Patent number: 8845736Abstract: A composite interbody vertebral implant for facilitating fusion of adjacent vertebrae. The implant includes a first endplate of a porous metal material and a second endplate of a porous metal material which are configured to allow bone in-growth. The implant also includes a polymeric body positioned between and bonded to the first and second endplates such that polymeric material of the polymeric body is impregnated into pores of the first and second endplates to bond the components together. The implant may include a cavity extending through the composite implant configured to receive bone growth material to facilitate fusion between a first vertebra and a second vertebra.Type: GrantFiled: April 26, 2013Date of Patent: September 30, 2014Assignee: Zimmer Spine, Inc.Inventors: Kai Zhang, Christopher J. Valois, Zhibin Fang, Jeffrey A. Bassett, Steven A. Zawadzki, David C. Kirt, Steven E. Spangle
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Patent number: 8470042Abstract: A composite interbody vertebral implant for facilitating fusion of adjacent vertebrae. The implant includes a first endplate of a porous metal material and a second endplate of a porous metal material which are configured to allow bone in-growth. The implant also includes a polymeric body positioned between and bonded to the first and second endplates such that polymeric material of the polymeric body is impregnated into pores of the first and second endplates to bond the components together. The implant may include a cavity extending through the composite implant configured to receive bone growth material to facilitate fusion between a first vertebra and a second vertebra.Type: GrantFiled: December 19, 2012Date of Patent: June 25, 2013Assignee: Zimmer Spine, Inc.Inventors: Kai Zhang, Christopher J. Valois, Zhibin Fang, Jeffrey A. Bassett, Steven A. Zawadzki, David C. Kirt, Steven E. Spangle
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Patent number: 8361150Abstract: A composite interbody vertebral implant for facilitating fusion of adjacent vertebrae. The implant includes a first endplate of a porous metal material and a second endplate of a porous metal material which are configured to allow bone in-growth. The implant also includes a polymeric body positioned between and bonded to the first and second endplates such that polymeric material of the polymeric body is impregnated into pores of the first and second endplates to bond the components together. The implant may include a cavity extending through the composite implant configured to receive bone growth material to facilitate fusion between a first vertebra and a second vertebra.Type: GrantFiled: July 2, 2010Date of Patent: January 29, 2013Assignee: Zimmer Spine, Inc.Inventors: Kai Zhang, Christopher J. Valois, Zhibin Fang, Jeffrey A. Bassett, Steven A. Zawadzki, David C. Kirt, Steven E. Spangle
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Publication number: 20120234461Abstract: A method for attaching a porous metal layer to a dense metal substrate, wherein the method is particularly useful in forming orthopedic implants such as femoral knee components, femoral hip components, and/or acetabular cups. The method, in one embodiment thereof, comprises providing a solid metal substrate; providing a porous metal structure; contouring a surface of the porous metal structure; placing the porous structure against the substrate such that the contoured surface of the porous metal structure is disposed against the substrate, thereby forming an assembly; applying heat and pressure to the assembly in conjunction with thermal expansion of the substrate in order to metallurgically bond the porous structure and the substrate; and removing mass from the substrate after the porous structure is bonded to the substrate, thereby finish processing the assembly.Type: ApplicationFiled: May 1, 2012Publication date: September 20, 2012Applicant: ZIMMER TECHNOLOGY, INC.Inventors: Steven J. Charlebois, Leslie N. Gilbertson, Michael E. Hawkins, Dana J. Medlin, H. Ravindranath Shetty, Steven A. Zawadzki
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Publication number: 20120221116Abstract: A hip prosthesis is provided for insertion into a femur. In one exemplary embodiment, the hip prosthesis includes a stem having a proximal end, a distal end, and a longitudinal axis. This stem may include anterior and posterior locking surfaces which diverge away from the longitudinal axis. A shank portion may extend distally from the anterior and posterior locking surfaces and converge at an angle distally toward the longitudinal axis.Type: ApplicationFiled: May 7, 2012Publication date: August 30, 2012Applicant: ZIMMER, INC.Inventors: Natalia Fridshtand, Douglas W. Gabel, Steven J. Charlebois, David L. Glass, Steven Zawadzki, Jeffrey P. Matney
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Patent number: 8206455Abstract: A hip prosthesis is provided for insertion into a femur. In one exemplary embodiment, the hip prosthesis includes a stem having a proximal end, a distal end, and a longitudinal axis. This stem may include anterior and posterior locking surfaces which diverge away from the longitudinal axis. A shank portion may extend distally from the anterior and posterior locking surfaces and converge at an angle distally toward the longitudinal axis.Type: GrantFiled: September 13, 2010Date of Patent: June 26, 2012Assignee: Zimmer Technology, Inc.Inventors: Natalia Fridshtand, Douglas W. Gabel, Steven J. Charlebois, David L. Glass, Steven A. Zawadzki, Jeffrey P. Matney
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Patent number: 8191760Abstract: A method for attaching a porous metal layer to a dense metal substrate, wherein the method is particularly useful in forming orthopedic implants such as femoral knee components, femoral hip components, and/or acetabular cups. The method, in one embodiment thereof, comprises providing a solid metal substrate; providing a porous metal structure; contouring a surface of the porous metal structure; placing the porous structure against the substrate such that the contoured surface of the porous metal structure is disposed against the substrate, thereby forming an assembly; applying heat and pressure to the assembly in conjunction with thermal expansion of the substrate in order to metallurgically bond the porous structure and the substrate; and removing mass from the substrate after the porous structure is bonded to the substrate, thereby finish processing the assembly.Type: GrantFiled: February 15, 2011Date of Patent: June 5, 2012Assignee: Zimmer Technology, Inc.Inventors: Steven J. Charlebois, Leslie N. Gilbertson, Michael E. Hawkins, Dana J. Medlin, H. Ravindranath Shetty, Steven A. Zawadzki
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Publication number: 20110132974Abstract: A method for attaching a porous metal layer to a dense metal substrate, wherein the method is particularly useful in forming orthopedic implants such as femoral knee components, femoral hip components, and/or acetabular cups. The method, in one embodiment thereof, comprises providing a solid metal substrate; providing a porous metal structure; contouring a surface of the porous metal structure; placing the porous structure against the substrate such that the contoured surface of the porous metal structure is disposed against the substrate, thereby forming an assembly; applying heat and pressure to the assembly in conjunction with thermal expansion of the substrate in order to metallurgically bond the porous structure and the substrate; and removing mass from the substrate after the porous structure is bonded to the substrate, thereby finish processing the assembly.Type: ApplicationFiled: February 15, 2011Publication date: June 9, 2011Applicant: ZIMMER, INC.Inventors: Steven J. Charlebois, Leslie N. Gilbertson, Michael E. Hawkins, Dana J. Medlin, H. Ravindranath Shetty, Steven A. Zawadzki
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Patent number: 7918382Abstract: A method for attaching a porous metal layer to a dense metal substrate, wherein the method is particularly useful in forming orthopedic implants such as femoral knee components, femoral hip components, and/or acetabular cups. The method, in one embodiment thereof, comprises providing a solid metal substrate; providing a porous metal structure; contouring a surface of the porous metal structure; placing the porous structure against the substrate such that the contoured surface of the porous metal structure is disposed against the substrate, thereby forming an assembly; applying heat and pressure to the assembly in conjunction with thermal expansion of the substrate in order to metallurgically bond the porous structure and the substrate; and removing mass from the substrate after the porous structure is bonded to the substrate, thereby finish processing the assembly.Type: GrantFiled: April 18, 2005Date of Patent: April 5, 2011Assignee: Zimmer Technology, Inc.Inventors: Steven J. Charlebois, Leslie N. Gilbertson, Michael E. Hawkins, Dana J. Medlin, H. Ravindranath Shetty, Steven A. Zawadzki
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Publication number: 20110071635Abstract: A composite interbody vertebral implant for facilitating fusion of adjacent vertebrae. The implant includes a first endplate of a porous metal material and a second endplate of a porous metal material which are configured to allow bone ingrowth. The implant also includes a polymeric body positioned between and bonded to the first and second endplates such that polymeric material of the polymeric body is impregnated into pores of the first and second endplates to bond the components together. The implant may include a cavity extending through the composite implant configured to receive bone growth material to facilitate fusion between a first vertebra and a second vertebra.Type: ApplicationFiled: July 2, 2010Publication date: March 24, 2011Applicant: Zimmer Spine, Inc.Inventors: Kai Zhang, Christopher J. Valois, Zhibin Fang, Jeffrey A. Bassett, Steven A. Zawadzki, David C. Kirt, Steven E. Spangle
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Publication number: 20110009977Abstract: A hip prosthesis is provided for insertion into a femur. In one exemplary embodiment, the hip prosthesis includes a stem having a proximal end, a distal end, and a longitudinal axis. This stem may include anterior and posterior locking surfaces which diverge away from the longitudinal axis. A shank portion may extend distally from the anterior and posterior locking surfaces and converge at an angle distally toward the longitudinal axis.Type: ApplicationFiled: September 13, 2010Publication date: January 13, 2011Applicant: ZIMMER, INC.Inventors: Natalia Fridshtand, Douglas W. Gabel, Steven J. Charlebois, David L. Glass, Steven Zawadzki, Jeffrey P. Matney