Patents by Inventor Paul Charles Crabtree
Paul Charles Crabtree 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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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
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Publication number: 20210369461Abstract: Anatomically shaped augments that are configured for implantation in a bone and which have one or more reliefs. A distal end of an outer portion of the augment can have a shape that is configured to generally conform to the shape of a metaphyseal-diaphyseal junction of an intramedullary canal of a bone. A proximal end of the outer portion can have a shape that is configured to generally conform to a shape of the metaphyseal region of the intramedullary canal. The reliefs can be configured to reduce a size of the augment and enhance the degree of freedom in the implant positioning and/or sizing of the augment. Further, such reliefs may contour the augment so as to prevent cortical bone contact and/or prevent contact with the implant device that may be associated with misalignment between an intramedullary canal and metaphyseal or diaphyseal regions of the bone.Type: ApplicationFiled: August 11, 2021Publication date: December 2, 2021Applicant: Smith & Nephew, Inc.Inventors: Roger Ryan Dees, Jeffrey N. Yeager, Angela Mines, Paul Charles Crabtree
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Patent number: 11116637Abstract: Anatomically shaped augments that are configured for implantation in a bone and which have one or more reliefs. A distal end of an outer portion of the augment can have a shape that is configured to generally conform to the shape of a metaphyseal-diaphyseal junction of an intramedullary canal of a bone. A proximal end of the outer portion can have a shape that is configured to generally conform to a shape of the metaphyseal region of the intramedullary canal. The reliefs can be configured to reduce a size of the augment and enhance the degree of freedom in the implant positioning and/or sizing of the augment. Further, such reliefs may contour the augment so as to prevent cortical bone contact and/or prevent contact with the implant device that may be associated with misalignment between an intramedullary canal and metaphyseal or diaphyseal regions of the bone.Type: GrantFiled: December 11, 2018Date of Patent: September 14, 2021Assignee: Smith & Nephew, Inc.Inventors: Roger Ryan Dees, Jeffrey N. Yeager, Angela Mines, Paul Charles Crabtree
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Publication number: 20210121292Abstract: Augments for implantation of an orthopedic implant device in a bone. A distal end of an outer portion of the augment can have a shape that is configured to generally conform to the shape of a metaphyseal-diaphyseal junction of an intramedullary canal of the bone. Further, a proximal end of the outer portion of the augment has a shape that is configured to generally conform to a shape of the metaphyseal region of the intramedullary canal. Additionally, the shape of the outer portion at the distal end can be separated from the shape of the outer portion at the proximal end by a distance that is approximately equal to the distance between the metaphyseal-diaphyseal junction and the metaphyseal region of the intramedullary canal.Type: ApplicationFiled: January 6, 2021Publication date: April 29, 2021Applicant: Smith & Nephew, Inc.Inventors: Roger Ryan Dees, Jeffrey N. Yeager, Angela Mines, Paul Charles Crabtree
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Patent number: 10912649Abstract: Augments for implantation of an orthopedic implant device in a bone. A distal end of an outer portion of the augment can have a shape that is configured to generally conform to the shape of a metaphyseal-diaphyseal junction of an intramedullary canal of the bone. Further, a proximal end of the outer portion of the augment has a shape that is configured to generally conform to a shape of the metaphyseal region of the intramedullary canal. Additionally, the shape of the outer portion at the distal end can be separated from the shape of the outer portion at the proximal end by a distance that is approximately equal to the distance between the metaphyseal-diaphyseal junction and the metaphyseal region of the intramedullary canal.Type: GrantFiled: May 13, 2016Date of Patent: February 9, 2021Assignee: Smith & Nephew, Inc.Inventors: Roger Ryan Dees, Jeffrey N. Yeager, Angela Mines, Paul Charles Crabtree
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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
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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
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Publication number: 20190105159Abstract: Anatomically shaped augments that are configured for implantation in a bone and which have one or more reliefs. A distal end of an outer portion of the augment can have a shape that is configured to generally conform to the shape of a metaphyseal-diaphyseal junction of an intramedullary canal of a bone. A proximal end of the outer portion can have a shape that is configured to generally conform to a shape of the metaphyseal region of the intramedullary canal. The reliefs can be configured to reduce a size of the augment and enhance the degree of freedom in the implant positioning and/or sizing of the augment. Further, such reliefs may contour the augment so as to prevent cortical bone contact and/or prevent contact with the implant device that may be associated with misalignment between an intramedullary canal and metaphyseal or diaphyseal regions of the bone.Type: ApplicationFiled: December 11, 2018Publication date: April 11, 2019Inventors: Roger Ryan Dees, Jeffrey N. Yeager, Angela Mines, Paul Charles Crabtree
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Publication number: 20180140424Abstract: Augments for implantation of an orthopedic implant device in a bone. A distal end of an outer portion of the augment can have a shape that is configured to generally conform to the shape of a metaphyseal-diaphyseal junction of an intramedullary canal of the bone. Further, a proximal end of the outer portion of the augment has a shape that is configured to generally conform to a shape of the metaphyseal region of the intramedullary canal. Additionally, the shape of the outer portion at the distal end can be separated from the shape of the outer portion at the proximal end by a distance that is approximately equal to the distance between the metaphyseal-diaphyseal junction and the metaphyseal region of the intramedullary canal.Type: ApplicationFiled: May 13, 2016Publication date: May 24, 2018Inventors: Roger Ryan Dees, Jeffrey N. Yeager, Angela Mines, Paul Charles Crabtree
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Publication number: 20180125662Abstract: Anatomically shaped augments that are configured for implantation in a bone and which have one or more reliefs. A distal end of an outer portion of the augment can have a shape that is configured to generally conform to the shape of a metaphyseal-diaphyseal junction of an intramedullary canal of a bone. A proximal end of the outer portion can have a shape that is configured to generally conform to a shape of the metaphyseal region of the intramedullary canal. The reliefs can be configured to reduce a size of the augment and enhance the degree of freedom in the implant positioning and/or sizing of the augment. Further, such reliefs may contour the augment so as to prevent cortical bone contact and/or prevent contact with the implant device that may be associated with misalignment between an intramedullary canal and metaphyseal or diaphyseal regions of the bone.Type: ApplicationFiled: May 13, 2016Publication date: May 10, 2018Inventors: Roger Ryan Dees, Jeffrey N. Yeager, Angela Mines, Paul Charles Crabtree
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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
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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
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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
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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.
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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
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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
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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
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Patent number: 9168156Abstract: Embodiments of the present invention provide a trial coupler system for use in preparing a patient for an implant. Certain embodiments provide a system including a coupling device (20) and a trial component interface (40) that allows a trial stem (100) to be offset in relation to the respective trial components at an orientation that matches the geometry of the patient. Once the precise positioning is obtained, the trial coupler device (10) can be locked while on the patient's bone so the assembly can be removed without disturbing the desired orientation.Type: GrantFiled: October 31, 2006Date of Patent: October 27, 2015Assignee: Smith & Nephew, Inc.Inventors: Paul Charles Crabtree, Roger Ryan Dees, Mark Ellsworth Nadzadi
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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
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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