Patents by Inventor Paul Charles Crabtree, JR.
Paul Charles Crabtree, JR. 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: 20220133485Abstract: A hinged knee prosthesis comprises a tibial component and a femoral component. The tibial component is configured to attach to a tibia. The tibial component has a bearing surface. The femoral component is configured to hingedly attach to the tibial component and rotate relative to the tibial component. The femoral component comprises a medial condyle and a lateral condyle. The medial and lateral condyles have an eccentric sagittal curvature surface configured to rotate and translate on the bearing surface of the tibial component. A method of rotating a hinged knee through a range of flexion is provided. The method fixedly attaches a femoral component to a tibial component. Axial rotation of the femoral component is induced relative to the tibial component when the hinged knee is flexed.Type: ApplicationFiled: January 12, 2022Publication date: May 5, 2022Inventors: Roger Ryan Dees, JR., Paul Charles Crabtree, JR., Jonathan Kirk Nielsen
-
Patent number: 10779949Abstract: A hinged knee prosthesis comprises a tibial component and a femoral component. The tibial component is configured to attach to a tibia. The tibial component has a bearing surface. The femoral component is configured to hingedly attach to the tibial component and rotate relative to the tibial component. The femoral component comprises a medial condyle and a lateral condyle. The medial and lateral condyles have an eccentric sagittal curvature surface configured to rotate and translate on the bearing surface of the tibial component. A method of rotating a hinged knee through a range of flexion is provided. The method fixedly attaches a femoral component to a tibial component. Axial rotation of the femoral component is induced relative to the tibial component when the hinged knee is flexed.Type: GrantFiled: August 14, 2017Date of Patent: September 22, 2020Assignee: Smith & Nephew, Inc.Inventors: Roger Ryan Dees, Jr., Paul Charles Crabtree, Jr., Jonathan Kirk Nielsen
-
Publication number: 20200078181Abstract: A hinged knee prosthesis comprises a tibial component and a femoral component. The tibial component is configured to attach to a tibia. The tibial component has a bearing surface. The femoral component is configured to hingedly attach to the tibial component and rotate relative to the tibial component. The femoral component comprises a medial condyle and a lateral condyle. The medial and lateral condyles have an eccentric sagittal curvature surface configured to rotate and translate on the bearing surface of the tibial component. A method of rotating a hinged knee through a range of flexion is provided. The method fixedly attaches a femoral component to a tibial component. Axial rotation of the femoral component is induced relative to the tibial component when the hinged knee is flexed.Type: ApplicationFiled: November 15, 2019Publication date: March 12, 2020Inventors: Roger Ryan Dees, JR., Paul Charles Crabtree, JR., Jonathan Kirk Nielsen
-
Publication number: 20180008421Abstract: A hinged knee prosthesis comprises a tibial component and a femoral component. The tibial component is configured to attach to a tibia. The tibial component has a bearing surface. The femoral component is configured to hingedly attach to the tibial component and rotate relative to the tibial component. The femoral component comprises a medial condyle and a lateral condyle. The medial and lateral condyles have an eccentric sagittal curvature surface configured to rotate and translate on the bearing surface of the tibial component. A method of rotating a hinged knee through a range of flexion is provided. The method fixedly attaches a femoral component to a tibial component. Axial rotation of the femoral component is induced relative to the tibial component when the hinged knee is flexed.Type: ApplicationFiled: August 14, 2017Publication date: January 11, 2018Applicant: Smith & Nephew, Inc.Inventors: Roger Ryan Dees, Jr., Paul Charles Crabtree, JR., Jonathan Kirk Nielsen
-
Patent number: 9730799Abstract: A hinged knee prosthesis comprises a tibial component and a femoral component. The tibial component is configured to attach to a tibia. The tibial component has a bearing surface. The femoral component is configured to hingedly attach to the tibial component and rotate relative to the tibial component. The femoral component comprises a medial condyle and a lateral condyle. The medial and lateral condyles have an eccentric sagittal curvature surface configured to rotate and translate on the bearing surface of the tibial component. A method of rotating a hinged knee through a range of flexion is provided. The method fixedly attaches a femoral component to a tibial component. Axial rotation of the femoral component is induced relative to the tibial component when the hinged knee is flexed.Type: GrantFiled: August 12, 2013Date of Patent: August 15, 2017Assignee: Smith & Nephew, Inc.Inventors: Roger Ryan Dees, Jr., Paul Charles Crabtree, Jr., Jonathan Kirk Nielsen
-
Patent number: 9693868Abstract: Methods, systems, and devices for replacement of a joint with a prosthetic system that replicates the natural kinematics of the joint is disclosed. A prosthetic system according to one embodiment includes a tibial component having a tibial plateau and a tibial stem portion, the tibial plateau having a top side and a bottom side, a tibial insert, with a bearing surface, adapted to be positioned on the top side of the tibial plateau, a femoral component having a base portion and a central housing, the femoral component having an axis of extension-flexion rotation, the base portion having a pair of condyles, an a mechanical linkage component linking the tibial component with the femoral component and with the tibial insert in between the tibial component and the femoral component, so that there is a center of contact between the condyles and the bearing surface.Type: GrantFiled: June 17, 2016Date of Patent: July 4, 2017Assignee: Smith & Nephew, Inc.Inventors: Paul Charles Crabtree, Jr., Greg Marik, Abraham Biglari Salehi, Kevin Weaver, Frantz Langlais, Denis Huten, Dennis Harrison
-
Patent number: 9668872Abstract: Orthopedic assemblies including a tibial component and one of a fixed tibial insert or a rotatable tibial insert. The assemblies may include structure to prevent undesired movement between the tibial component and insert. For example, a retaining tab may be provided on the tibial component that couples to a tab opening on a surface of the tibial insert (either the fixed or rotatable insert). When assembled, the retaining tab may be covered to avoid possible irritation to the patient's surrounding anatomy. The fixed tibial insert may be provided with a tab opening that provides a minimal amount clearance with the retaining tab to help prevent rotation of the fixed tibial insert. The rotatable tibial insert may be provided with a tab opening with more clearance with the retaining tab to allow at least some rotation with the tibial component.Type: GrantFiled: September 22, 2014Date of Patent: June 6, 2017Assignee: Smith & Nephew, Inc.Inventors: Roger Ryan Dees, Jr., Paul Charles Crabtree, Jr.
-
Patent number: 9532788Abstract: A method positions a profile of a prosthetic component on the three-dimensional model of a limb. Patient-specific anatomical data of the limb is gathered. First and second anatomical landmarks are identified to determine a first spatial relationship. A third anatomical landmark is identified to determine a second spatial relationship with respect to the first spatial relationship. The profile of the prosthetic component is positioned in all but one degree of freedom. A fourth anatomical landmark is identified to position the profile of the prosthetic component in the one remaining degree of freedom.Type: GrantFiled: May 12, 2015Date of Patent: January 3, 2017Assignee: Smith & Nephew, Inc.Inventors: Jason Sean Jordan, Michael Dean Hughes, Mark Ellsworth Nadzadi, Brian William McKinnon, Paul Charles Crabtree, Jr., David Timothy Mehl
-
Publication number: 20160287399Abstract: Methods, systems, and devices for replacement of a joint with a prosthetic system that replicates the natural kinematics of the joint is disclosed. A prosthetic system according to one embodiment includes a tibial component having a tibial plateau and a tibial stem portion, the tibial plateau having a top side and a bottom side, a tibial insert, with a bearing surface, adapted to be positioned on the top side of the tibial plateau, a femoral component having a base portion and a central housing, the femoral component having an axis of extension-flexion rotation, the base portion having a pair of condyles, an a mechanical linkage component linking the tibial component with the femoral component and with the tibial insert in between the tibial component and the femoral component, so that there is a center of contact between the condyles and the bearing surface.Type: ApplicationFiled: June 17, 2016Publication date: October 6, 2016Applicant: Smith & Nephew, Inc.Inventors: Paul Charles Crabtree, JR., Greg Marik, Abraham Biglari Salehi, Kevin Weaver, Frantz Langlais, Denis Huten, Dennis Harrison
-
Patent number: 9381087Abstract: Methods, systems, and devices for replacement of a joint with a prosthetic system that replicates the natural kinematics of the joint is disclosed. A prosthetic system according to one embodiment includes a tibial component having a tibial plateau and a tibial stem portion, the tibial plateau having a top side and a bottom side, a tibial insert, with a bearing surface, adapted to be positioned on the top side of the tibial plateau, a femoral component having a base portion and a central housing, the femoral component having an axis of extension-flexion rotation, the base portion having a pair of condyles, an a mechanical linkage component linking the tibial component with the femoral component and with the tibial insert in between the tibial component and the femoral component, so that there is a center of contact between the condyles and the bearing surface.Type: GrantFiled: May 18, 2015Date of Patent: July 5, 2016Assignee: Smith & Nephew, Inc.Inventors: Paul Charles Crabtree, Jr., Greg Marik, Abraham Biglari Salehi, Kevin Weaver, Frantz Langlais, Denis Huten, Dennis Harrison
-
Publication number: 20150245915Abstract: Methods, systems, and devices for replacement of a joint with a prosthetic system that replicates the natural kinematics of the joint is disclosed. A prosthetic system according to one embodiment includes a tibial component having a tibial plateau and a tibial stem portion, the tibial plateau having a top side and a bottom side, a tibial insert, with a bearing surface, adapted to be positioned on the top side of the tibial plateau, a femoral component having a base portion and a central housing, the femoral component having an axis of extension-flexion rotation, the base portion having a pair of condyles, an a mechanical linkage component linking the tibial component with the femoral component and with the tibial insert in between the tibial component and the femoral component, so that there is a center of contact between the condyles and the bearing surface.Type: ApplicationFiled: May 18, 2015Publication date: September 3, 2015Applicant: SMITH & NEPHEW, INC.Inventors: Paul Charles Crabtree, JR., Greg Marik, Abraham Biglari Salehi, Kevin Weaver, Frantz Langlais, Denis Huten, Dennis Harrison
-
Publication number: 20150238273Abstract: A method positions a profile of a prosthetic component on the three-dimensional model of a limb. Patient-specific anatomical data of the limb is gathered. First and second anatomical landmarks are identified to determine a first spatial relationship. A third anatomical landmark is identified to determine a second spatial relationship with respect to the first spatial relationship. The profile of the prosthetic component is positioned in all but one degree of freedom. A fourth anatomical landmark is identified to position the profile of the prosthetic component in the one remaining degree of freedom.Type: ApplicationFiled: May 12, 2015Publication date: August 27, 2015Applicant: Smith & Nephew, Inc.Inventors: Jason Sean Jordan, Michael Dean Hughes, Mark Ellsworth Nadzadi, Brian William McKinnon, Paul Charles Crabtree, JR., David Timothy Mehl
-
Patent number: 9056012Abstract: Methods, systems, and devices for replacement of a joint with a prosthetic system that replicates the natural kinematics of the joint is disclosed.Type: GrantFiled: August 9, 2013Date of Patent: June 16, 2015Assignee: Smith & Nephew, Inc.Inventors: Paul Charles Crabtree, Jr., Greg Marik, Abraham Biglari Salehi, Kevin Weaver, Frantz Langlais, Denis Huten, Dennis Harrison
-
Publication number: 20150012106Abstract: Orthopaedic assemblies including a tibial component and one of a fixed tibial insert or a rotatable tibial insert. The assemblies may include structure to prevent undesired movement between the tibial component and insert. For example, a retaining tab may be provided on the tibial component that couples to a tab opening on a surface of the tibial insert (either the fixed or rotatable insert). When assembled, the retaining tab may be covered to avoid possible irritation to the patient's surrounding anatomy. The fixed tibial insert may be provided with a tab opening that provides a minimal amount clearance with the retaining tab to help prevent rotation of the fixed tibial insert. The rotatable tibial insert may be provided with a tab opening with more clearance with the retaining tab to allow at least some rotation with the tibial component.Type: ApplicationFiled: September 22, 2014Publication date: January 8, 2015Applicant: Smith & Nephew, Inc.Inventors: Roger Ryan Dees, JR., Paul Charles Crabtree, Jr.
-
Patent number: 8845745Abstract: Orthopaedic assemblies including a tibial component and one of a fixed tibial insert or a rotatable tibial insert. The assemblies may include structure to prevent undesired movement between the tibial component and insert. For example, a retaining tab may be provided on the tibial component that couples to a tab opening on a surface of the tibial insert (either the fixed or rotatable insert). When assembled, the retaining tab may be covered to avoid possible irritation to the patient's surrounding anatomy. The fixed tibial insert may be provided with a tab opening that provides a minimal amount clearance with the retaining tab to help prevent rotation of the fixed tibial insert. The rotatable tibial insert may be provided with a tab opening with more clearance with the retaining tab to allow at least some rotation with the tibial component.Type: GrantFiled: June 1, 2011Date of Patent: September 30, 2014Assignee: Smith & Nephew, Inc.Inventors: Roger Ryan Dees, Jr., Paul Charles Crabtree, Jr.
-
Publication number: 20140222407Abstract: A method positions a profile of a prosthetic component on the three-dimensional model of a limb. Patient-specific anatomical data of the limb is gathered. First and second anatomical landmarks are identified to determine a first spatial relationship. A third anatomical landmark is identified to determine a second spatial relationship with respect to the first spatial relationship. The profile of the prosthetic component is positioned in all but one degree of freedom. A fourth anatomical landmark is identified to position the profile of the prosthetic component in the one remaining degree of freedom.Type: ApplicationFiled: March 24, 2014Publication date: August 7, 2014Applicant: SMITH & NEPHEW, INC.Inventors: Jason Sean Jordan, Michael Dean Hughes, Mark Ellsworth Nadzadi, Brian William McKinnon, Paul Charles Crabtree, JR., David Timothy Mehl
-
Publication number: 20130331945Abstract: A hinged knee prosthesis comprises a tibial component and a femoral component. The tibial component is configured to attach to a tibia. The tibial component has a bearing surface. The femoral component is configured to hingedly attach to the tibial component and rotate relative to the tibial component. The femoral component comprises a medial condyle and a lateral condyle. The medial and lateral condyles have an eccentric sagittal curvature surface configured to rotate and translate on the bearing surface of the tibial component. A method of rotating a hinged knee through a range of flexion is provided. The method fixedly attaches a femoral component to a tibial component. Axial rotation of the femoral component is induced relative to the tibial component when the hinged knee is flexed.Type: ApplicationFiled: August 12, 2013Publication date: December 12, 2013Applicant: Smith & Nephew, Inc.Inventors: Roger Ryan Dees, JR., Paul Charles Crabtree, JR., Jonathan Kirk Nielsen
-
Publication number: 20130325135Abstract: Methods, systems, and devices for replacement of a joint with a prosthetic system that replicates the natural kinematics of the joint is disclosed.Type: ApplicationFiled: August 9, 2013Publication date: December 5, 2013Applicant: Smith & Nephew, Inc.Inventors: Paul Charles Crabtree, JR., Greg Marik, Abraham Biglari Salehi, Kevin Weaver, Frantz Langlais, Denis Huten, Dennis Harrison
-
Patent number: 8523950Abstract: A hinged knee prosthesis (10) comprises a tibial component (16) and a femoral component (14). The tibial component (16) is configured to attach to a tibia. The tibial component has a bearing surface (128). The femoral component (14) is configured to hingedly attach to the tibial component (16) and rotate relative to the tibial component (16). The femoral component (14) comprises a medial condyle (30) and a lateral condyle (32). The medial and lateral condyles (30 and 32) have an eccentric sagittal curvature surface (50) configured to rotate and translate on the bearing surface (128) of the tibial component (16). A method of rotating a hinged knee (10) through a range of flexion is provided. The method fixedly attaches a femoral component (14) to a tibial component (16). Axial rotation of the femoral component (14) is induced relative to the tibial component (16) when the hinged knee (10) is flexed.Type: GrantFiled: June 30, 2007Date of Patent: September 3, 2013Assignee: Smith & Nephew, Inc.Inventors: Roger Ryan Dees, Paul Charles Crabtree, Jr., Jonathan Kirk Nielsen
-
Publication number: 20110295377Abstract: Orthopaedic assemblies including a tibial component and one of a fixed tibial insert or a rotatable tibial insert. The assemblies may include structure to prevent undesired movement between the tibial component and insert. For example, a retaining tab may be provided on the tibial component that couples to a tab opening on a surface of the tibial insert (either the fixed or rotatable insert). When assembled, the retaining tab may be covered to avoid possible irritation to the patient's surrounding anatomy. The fixed tibial insert may be provided with a tab opening that provides a minimal amount clearance with the retaining tab to help prevent rotation of the fixed tibial insert. The rotatable tibial insert may be provided with a tab opening with more clearance with the retaining tab to allow at least some rotation with the tibial component.Type: ApplicationFiled: June 1, 2011Publication date: December 1, 2011Applicant: SMITH & NEPHEW, INC.Inventors: ROGER RYAN DEES, JR., Paul Charles Crabtree, JR.