Patents by Inventor David W. Rister
David W. Rister 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: 11925562Abstract: A modular acetabular cup assembly includes an acetabular cup, and a liner seated in the cup. The cup includes an end face, an apex opposite the end face, and a central axis extending between the apex and a center point of the end face. The liner includes an articular surface having a center of rotation which defines a pivot point of the acetabular cup assembly. In certain embodiments, the pivot point is laterally offset from the center point such that the end face is located between the pivot point and the apex.Type: GrantFiled: May 23, 2022Date of Patent: March 12, 2024Assignee: SMITH & NEPHEW, INC.Inventors: David W. Rister, Stephen J. Lee, Jeffrey Lee
-
Publication number: 20240074864Abstract: An insert (240) arranged and configured for use in a dual mobility acetabular implant (100) is disclosed. The insert includes a plurality of chamfers (260, 262, 264) arranged and configured to contact the femoral neck (172) and/or head (170) of a femoral implant (175). The insert includes a plurality of chamfers such as, for example, two or three chamfers to define a plurality of differently arranged contact surfaces for contacting the femoral component to accommodate a variety of different femoral component configurations and/or impingement conditions in order to reduce contact stress between the insert and the femoral component.Type: ApplicationFiled: January 14, 2022Publication date: March 7, 2024Applicants: Smith & Nephew, Inc., Smith & Nephew Orthopaedics AG, Smith & Nephew Asia Pacific Pte. LimitedInventor: David W. Rister
-
Publication number: 20240065846Abstract: The present disclosure provides an additively manufactured resurfacing implant (100) configured for use in a resurfacing surgery in which one or more porous regions (130) are provided at an internal fixation surface of a resurfacing head (110) of the resurfacing implant. In various embodiments, the additively manufactured resurfacing implant comprises one or more substantially nonporous regions that correspond to the resurfacing head and a stem (120) of the resurfacing implant and one or more porous regions that are positioned on an internal surface of the resurfacing head. The present disclosure also provides an intermediate constructions and an additive manufacturing process for forming such a resurfacing implant.Type: ApplicationFiled: January 12, 2022Publication date: February 29, 2024Applicants: Smith & Nephew, Inc., Smith & Nephew Orthopaedics AG, Smith & Nephew Asia Pacific Pte. LimitedInventors: Mouhsin Ahmed El-Chafei, David W. Rister, Jason Sells, Dongyu Zang
-
Patent number: 11517441Abstract: Prostheses, acetabular apparatuses, and methods of use are disclosed. In some embodiments, an acetabular apparatus includes an acetabular cup, a pre-assembled liner and flange construct, and a dual mobility bearing (e.g., a dual articulating femoral head component and insert). In one embodiment, the pre-assembled liner and flange construct may be coupled together by a band coupled to the flanges, the band being arranged and configured to be pressed onto an outer surface of a liner. The pre-assembled liner and flange construct being arranged and configured to accept the dual mobility bearing so that it is freely rotatable relative thereto during use.Type: GrantFiled: September 9, 2020Date of Patent: December 6, 2022Assignees: Smith & Nephew, Inc., Smith & Nephew Asia Pacific Pte. Limited, Smith & Nephew Orthopaedics AGInventors: Stephen J. Lee, Jeffrey J. Shea, David W. Rister
-
Publication number: 20220280304Abstract: A modular acetabular cup assembly includes an acetabular cup, and a liner seated in the cup. The cup includes an end face, an apex opposite the end face, and a central axis extending between the apex and a center point of the end face. The liner includes an articular surface having a center of rotation which defines a pivot point of the acetabular cup assembly. In certain embodiments, the pivot point is laterally offset from the center point such that the end face is located between the pivot point and the apex.Type: ApplicationFiled: May 23, 2022Publication date: September 8, 2022Applicant: Smith & Nephew, Inc.Inventors: David W. Rister, Stephen J. Lee, Jeffrey Lee
-
Patent number: 11369475Abstract: A modular acetabular cup assembly includes an acetabular cup, and a liner seated in the cup. The cup includes an end face, an apex opposite the end face, and a central axis extending between the apex and a center point of the end face. The liner includes an articular surface having a center of rotation which defines a pivot point of the acetabular cup assembly. In certain embodiments, the pivot point is laterally offset from the center point such that the end face is located between the pivot point and the apex.Type: GrantFiled: January 14, 2021Date of Patent: June 28, 2022Assignee: Smith & Nephew, Inc.Inventors: David W. Rister, Stephen J. Lee, Jeffrey Lee
-
Patent number: 11173045Abstract: A trial medical instrument for aligning an acetabular component, comprising: a first portion configured to fit within a patient's acetabulum; and a second portion extending from the first portion; wherein the second portion extends from the first portion in a direction that mimics a shape formed by a femoral implant component coupled with an acetabular implant component when a femur to which the femoral implant component is coupled is in a position relative to an acetabulum to which the acetabular implant component is coupled that is near an extent of a typical range of motion of the femur. As used herein, the phrase “extent of a typical range of motion” describes typical angular displacements of a femur as usually limited by patient anatomy.Type: GrantFiled: September 19, 2019Date of Patent: November 16, 2021Assignee: Smith & Nephew, Inc.Inventors: David C. Kelman, John Clausen, M. Scott Elliott, David L. Evans, Kevin W. Belew, David W. Rister, Phillip E. Frederick, Russell Walter
-
Publication number: 20210338299Abstract: Apparatuses for mounting medical aid devices to anatomical structures and methods of use are disclosed. Mounting apparatuses may include femoral clamps or clamps configured to be affixed to other bone structures. Mounting apparatuses may include a pair of opposing arms configured to be compressed around a portion of a bone structure via a clamping force provided by a clamping assembly to affix the mounting apparatus to the bone structure. Clamping assemblies may include a magnetically-actuated clamping assembly, a mechanically-actuated clamping assembly, or a spring-actuated clamping assembly. A magnetically-actuated clamping assembly may generate a clamping force via alignment of magnetic fields within the clamping apparatus. A mechanically-actuated clamping assembly may generate a clamping force via a linkage-tensioning system, a rack-and-pinion system, or a lever-locking system.Type: ApplicationFiled: April 28, 2021Publication date: November 4, 2021Inventors: Mouhsin El-Chafei, David W. Rister, Michael D. Hollandsworth, JR., Daniel Cook, Jeffrey Lee, Ashley A. Roakes
-
Patent number: 11013604Abstract: A modular acetabular cup assembly includes an acetabular cup, and a liner seated in the cup. The cup includes an end face, an apex opposite the end face, and a central axis extending between the apex and a center point of the end face. The liner includes an articular surface having a center of rotation which defines a pivot point of the acetabular cup assembly. In certain embodiments, the pivot point is laterally offset from the center point such that the end face is located between the pivot point and the apex.Type: GrantFiled: October 17, 2017Date of Patent: May 25, 2021Assignee: Smith & Nephew, Inc.Inventors: David W. Rister, Stephen J. Lee, Jeffrey Lee
-
Publication number: 20210137687Abstract: A modular acetabular cup assembly includes an acetabular cup, and a liner seated in the cup. The cup includes an end face, an apex opposite the end face, and a central axis extending between the apex and a center point of the end face. The liner includes an articular surface having a center of rotation which defines a pivot point of the acetabular cup assembly. In certain embodiments, the pivot point is laterally offset from the center point such that the end face is located between the pivot point and the apex.Type: ApplicationFiled: January 14, 2021Publication date: May 13, 2021Applicant: Smith & Nephew, Inc.Inventors: David W. Rister, Stephen J. Lee, Jeffrey Lee
-
Publication number: 20210077262Abstract: Prostheses, acetabular apparatuses, and methods of use are disclosed. In some embodiments, an acetabular apparatus includes an acetabular cup, a pre-assembled liner and flange construct, and a dual mobility bearing (e.g., a dual articulating femoral head component and insert). In one embodiment, the pre-assembled liner and flange construct may be coupled together by a band coupled to the flanges, the band being arranged and configured to be pressed onto an outer surface of a liner. The pre-assembled liner and flange construct being arranged and configured to accept the dual mobility bearing so that it is freely rotatable relative thereto during use.Type: ApplicationFiled: September 9, 2020Publication date: March 18, 2021Applicants: Smith & Nephew, Inc., Smith & Nephew Orthopaedics AG, Smith & Nephew Asia Pacific Pte. LimitedInventors: Stephen J. Lee, Jeffrey J. Shea, David W. Rister
-
Publication number: 20200008957Abstract: A trial medical instrument for aligning an acetabular component, comprising: a first portion configured to fit within a patient's acetabulum; and a second portion extending from the first portion; wherein the second portion extends from the first portion in a direction that mimics a shape formed by a femoral implant component coupled with an acetabular implant component when a femur to which the femoral implant component is coupled is in a position relative to an acetabulum to which the acetabular implant component is coupled that is near an extent of a typical range of motion of the femur. As used herein, the phrase “extent of a typical range of motion” describes typical angular displacements of a femur as usually limited by patient anatomy.Type: ApplicationFiled: September 19, 2019Publication date: January 9, 2020Inventors: David C. Kelman, John Clausen, M. Scott Elliot, David L. Evans, Kevin W. Belew, David W. Rister, Phillip E. Fredrick, Russell Walter
-
Patent number: 10463506Abstract: A trial medical instrument for aligning an acetabular component, comprising: a first portion configured to fit within a patient's acetabulum; and a second portion extending from the first portion; wherein the second portion extends from the first portion in a direction that mimics a shape formed by a femoral implant component coupled with an acetabular implant component when a femur to which the femoral implant component is coupled is in a position relative to an acetabulum to which the acetabular implant component is coupled that is near an extent of a typical range of motion of the femur. As used herein, the phrase “extent of a typical range of motion” describes typical angular displacements of a femur as usually limited by patient anatomy.Type: GrantFiled: April 25, 2014Date of Patent: November 5, 2019Assignee: Smith & Nephew, Inc.Inventors: David C. Kelman, John Clausen, M. Scott Elliott, David L. Evans, Kevin W. Belew, David W. Rister, Phillip E. Frederick, Russell Walter
-
Publication number: 20190254827Abstract: A modular acetabular cup assembly includes an acetabular cup, and a liner seated in the cup. The cup includes an end face, an apex opposite the end face, and a central axis extending between the apex and a center point of the end face. The liner includes an articular surface having a center of rotation which defines a pivot point of the acetabular cup assembly. In certain embodiments, the pivot point is laterally offset from the center point such that the end face is located between the pivot point and the apex.Type: ApplicationFiled: October 17, 2017Publication date: August 22, 2019Inventors: David W. Rister, Stephen J. Lee, Jeffrey Lee
-
Publication number: 20160081819Abstract: A trial medical instrument for aligning an acetabular component, comprising: a first portion configured to fit within a patient's acetabulum; and a second portion extending from the first portion; wherein the second portion extends from the first portion in a direction that mimics a shape formed by a femoral implant component coupled with an acetabular implant component when a femur to which the femoral implant component is coupled is in a position relative to an acetabulum to which the acetabular implant component is coupled that is near an extent of a typical range of motion of the femur. As used herein, the phrase “extent of a typical range of motion” describes typical angular displacements of a femur as usually limited by patient anatomy.Type: ApplicationFiled: April 25, 2014Publication date: March 24, 2016Applicant: Smith & Nephew, Inc.Inventors: David C. Kelman, John Clausen, M. Scott Elliott, David L. Evans, Kevin W. Belew, David W. Rister, Phillip E. Frederick, Russell Walter