Patents by Inventor Nathaniel Milton Lenz
Nathaniel Milton Lenz 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: 10064686Abstract: Systems and methods for optimizing parameters of an orthopaedic procedure for a particular patient, including parameters relating to the anatomic and biomechanic fit of an implant or implant system implanted into the patient's joint. These systems and methods may utilize patient-specific information gathered pre-operatively in conjunction with optimization algorithms to determine an optimal implant design and an optimal position and orientation for implantation of the implant into the particular patient's joint.Type: GrantFiled: August 15, 2011Date of Patent: September 4, 2018Assignee: Smith & Nephew, Inc.Inventors: Brian W. McKinnon, Ruxandra Cristiana Marinescu Tanasoca, Randy C. Winebarger, William L. Bowers, Jr., James Bennett Wiebe, III, Nathaniel Milton Lenz, Zachary Christopher Wilkinson, Sean M. Haddock, Ryan Lloyd Landon
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Patent number: 9999511Abstract: A tibial insert includes a base and a post extending from the base along a longitudinal axis. The post has a medial surface, a lateral surface, and a height along the longitudinal axis. The medial surface has a medial section, and the lateral surface has a lateral section oriented substantially parallel to the medial section. The medial section and the lateral section each have a width in a substantially anterior-posterior direction that is sufficient to enable varus/valgus constraint over a flexion/extension range from extension to about 90 to 120 degrees of flexion when the tibial insert is mated with a femoral component. The tibial insert further configured such that the medial bearing surface extends further in an inferior direction than the lateral bearing surface and a bottom point of the medial bearing surface is disposed closer to an anterior end portion of the medial bearing surface than a posterior end portion of the medial bearing surface.Type: GrantFiled: March 11, 2015Date of Patent: June 19, 2018Assignee: SMITH & NEPHEW, INC.Inventors: Brian William McKinnon, Nathaniel Milton Lenz, Scott Kennedy Laster, Michael D. Ries, Steven B. Haas
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Patent number: 9730705Abstract: Methods and apparatus for performing knee arthroplasty, including, but not limited to, bicruciate retaining knee arthroplasty, are described herein. Methods and apparatus for preparing a distal femur for a femoral implant as well as methods and apparatus for preparing a proximal tibia for a tibial implant are described. These methods and apparatus, in at least some embodiments and uses, facilitate decreasing the complexity of knee arthroplasty procedures such as bicruciate retaining procedures, while maintaining, if not improving on, the safety, accuracy and/or effectiveness of such procedures.Type: GrantFiled: April 25, 2014Date of Patent: August 15, 2017Assignee: Smith & Nephew, Inc.Inventors: Richard Michael Smith, Zachary Christopher Wilkinson, Nathaniel Milton Lenz, Brian William McKinnon, David A. Drucker
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Patent number: 9579209Abstract: A tibial insert includes a base and a post extending from the base along a longitudinal axis. The post has a medial surface, a lateral surface, and a height along the longitudinal axis. The medial surface has a medial section, and the lateral surface has a lateral section oriented substantially parallel to the medial section. The medial section and the lateral section each have a width in a substantially anterior-posterior direction that is sufficient to enable varus/valgus constraint over a flexion/extension range from extension to about 90 to 120 degrees of flexion when the tibial insert is mated with a femoral component.Type: GrantFiled: July 11, 2014Date of Patent: February 28, 2017Assignee: Smith & Nephew, Inc.Inventors: Brian William McKinnon, Nathaniel Milton Lenz, Scott Kennedy Laster, Michael D. Ries, Steven B. Haas
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Patent number: 9233002Abstract: Systems, methods and devices for tensioning posterior crucial ligaments during cruciate or bi-cruciate ligament-sparing arthroplasty. Non-limiting examples of such systems may include at least one series of tibial inserts of equal size; the at least one series of tibial inserts having at least one set of tibial inserts of equal thickness. The at least one set of tibial inserts of equal thickness may include at least two tibial inserts having different geometries in a posterior portion, the different geometries being configured to change the tension in the posterior cruciate ligament (PCL). The different geometries in the posterior portions of the tibial inserts are configured so as to allow the posterior cruciate ligament to be tensioned or loosened independently of the tibial insert thickness and/or size.Type: GrantFiled: July 23, 2013Date of Patent: January 12, 2016Assignee: Smith & Nephew, Inc.Inventors: Nathaniel Milton Lenz, Zachary Christopher Wilkinson
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Publication number: 20150182344Abstract: A tibial insert includes a base and a post extending from the base along a longitudinal axis. The post has a medial surface, a lateral surface, and a height along the longitudinal axis. The medial surface has a medial section, and the lateral surface has a lateral section oriented substantially parallel to the medial section. The medial section and the lateral section each have a width in a substantially anterior-posterior direction that is sufficient to enable varus/valgus constraint over a flexion/extension range from extension to about 90 to 120 degrees of flexion when the tibial insert is mated with a femoral component.Type: ApplicationFiled: March 11, 2015Publication date: July 2, 2015Inventors: Brian William McKinnon, Nathaniel Milton Lenz, Scott Kennedy Laster, Michael D. Ries, Steven B. Haas
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Publication number: 20150088265Abstract: Certain embodiments generally provide an improved tibial base member comprising keel portions that allow one or both cruciate ligaments to be preserved. Other embodiments provide improved lateral and/or medial inserts having a mesial lip that helps relieve and/or prevent impingement between the femoral component and the tibial eminence. Other embodiments provide improved femoral components having various chamfers to provide additional clearance with respect to the tibial eminence and posterior cruciate ligament without decreasing bone coverage.Type: ApplicationFiled: December 1, 2014Publication date: March 26, 2015Applicant: SMITH & NEPHEW, INC.Inventors: Nathaniel Milton Lenz, Richard Michael Smith, Zachary Christopher Wilkinson, Brian William McKinnon, Abraham Biglari Salehi, Jonathan Kirk Nielsen, Michael D. Ries, Gerald J. Jerry
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Patent number: 8926709Abstract: An orthopaedic implant including a base portion and first and second transverse portions extending transversely from the base portion to thereby define an inner region of the implant sized for receipt of an end portion of a bone therein. The implant further includes at least one anchor structure projecting from the base portion and sized and configured for receipt within an opening formed in the end portion of the bone. The anchor structure extends along a longitudinal axis and includes a proximal end attached to the base portion and an opposite distal end, and further includes a tapered outer surface that inwardly tapers in a proximal-to-distal direction along the longitudinal axis. In one embodiment, the anchor structure also includes one or more grooves extending into the tapered outer surface, with a flowable material positioned about at least a portion of the tapered outer surface and positioned within the grooves, and with the flowable material configured to cure to a hardened state.Type: GrantFiled: August 11, 2011Date of Patent: January 6, 2015Assignee: Smith & Nephew, Inc.Inventors: Nathaniel Milton Lenz, Zachary Christopher Wilkinson
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Publication number: 20140324176Abstract: A tibial insert includes a base and a post extending from the base along a longitudinal axis. The post has a medial surface, a lateral surface, and a height along the longitudinal axis. The medial surface has a medial section, and the lateral surface has a lateral section oriented substantially parallel to the medial section. The medial section and the lateral section each have a width in a substantially anterior-posterior direction that is sufficient to enable varus/valgus constraint over a flexion/extension range from extension to about 90 to 120 degrees of flexion when the tibial insert is mated with a femoral component.Type: ApplicationFiled: July 11, 2014Publication date: October 30, 2014Applicant: SMITH & NEPHEW, INC.Inventors: Brian William McKinnon, Nathaniel Milton Lenz, Scott Kennedy Laster, Michael D. Ries, Steven B. Haas
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Publication number: 20140309640Abstract: Methods and apparatus for performing knee arthroplasty, including, but not limited to, bicruciate retaining knee arthroplasty, are described herein. Methods and apparatus for preparing a distal femur for a femoral implant as well as methods and apparatus for preparing a proximal tibia for a tibial implant are described. These methods and apparatus, in at least some embodiments and uses, facilitate decreasing the complexity of knee arthroplasty procedures such as bicruciate retaining procedures, while maintaining, if not improving on, the safety, accuracy and/or effectiveness of such procedures.Type: ApplicationFiled: April 25, 2014Publication date: October 16, 2014Applicant: Smith & Nephew, Inc.Inventors: Richard Michael Smith, Zachary Christopher Wilkinson, Nathaniel Milton Lenz, Brian William McKinnon, David A. Drucker
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Patent number: 8808388Abstract: A tibial insert includes a base and a post extending from the base along a longitudinal axis. The post has a medial surface, a lateral surface, and a height along the longitudinal axis. The medial surface has a medial section, and the lateral surface has a lateral section oriented substantially parallel to the medial section. The medial section and the lateral section each have a width in a substantially anterior-posterior direction that is sufficient to enable varus/valgus constraint over a flexion/extension range from extension to about 90 to 120 degrees of flexion when the tibial insert is mated with a femoral component.Type: GrantFiled: January 27, 2012Date of Patent: August 19, 2014Assignee: Smith & Nephew, Inc.Inventors: Brian William McKinnon, Nathaniel Milton Lenz, Scott Kennedy Laster, Michael D. Ries, Steven B. Haas
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Patent number: 8740985Abstract: Tibial inserts and tibial femoral systems are provided for improved knee reconstruction systems. External rotation of a knee joint implant is enhanced by modifications to the post, providing a recess that allows clearance of the post against the corners of a box wall within the femoral component. The rotation provides for a more natural knee joint motion of the implant. The depth, size, and location of the post relief may be modified for certain applications to provide both improved rotational motion and constraint against undesirable motion of the knee.Type: GrantFiled: November 30, 2012Date of Patent: June 3, 2014Assignee: Smith & Nephew, Inc.Inventor: Nathaniel Milton Lenz
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Patent number: 8728086Abstract: Methods and apparatus for performing knee arthroplasty, including, but not limited to, bicruciate retaining knee arthroplasty, are described herein. Methods and apparatus for preparing a distal femur for a femoral implant as well as methods and apparatus for preparing a proximal tibia for a tibial implant are described. These methods and apparatus, in at least some embodiments and uses, facilitate decreasing the complexity of knee arthroplasty procedures such as bicruciate retaining procedures, while maintaining, if not improving on, the safety, accuracy and/or effectiveness of such procedures.Type: GrantFiled: May 28, 2010Date of Patent: May 20, 2014Assignee: Smith & Nephew, Inc.Inventors: Richard Michael Smith, Zachary Christopher Wilkinson, Nathaniel Milton Lenz, Brian W. McKinnon, David A. Drucker
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Publication number: 20130317620Abstract: Systems, methods and devices for tensioning posterior crucial ligaments during cruciate or bi-cruciate ligament-sparing arthroplasty. Non-limiting examples of such systems may include at least one series of tibial inserts of equal size; the at least one series of tibial inserts having at least one set of tibial inserts of equal thickness. The at least one set of tibial inserts of equal thickness may include at least two tibial inserts having different geometries in a posterior portion, the different geometries being configured to change the tension in the posterior cruciate ligament (PCL). The different geometries in the posterior portions of the tibial inserts are configured so as to allow the posterior cruciate ligament to be tensioned or loosened independently of the tibial insert thickness and/or size.Type: ApplicationFiled: July 23, 2013Publication date: November 28, 2013Applicant: Smith & Nephew, Inc.Inventors: Nathaniel Milton Lenz, Zachary Christopher Wilkinson
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Publication number: 20130226190Abstract: Systems and methods for optimizing parameters of an orthopaedic procedure for a particular patient, including parameters relating to the anatomic and biomechanic fit of an implant or implant system implanted into the patient's joint. These systems and methods may utilize patient-specific information gathered pre-operatively in conjunction with optimization algorithms to determine an optimal implant design and an optimal position and orientation for implantation of the implant into the particular patient's joint.Type: ApplicationFiled: August 15, 2011Publication date: August 29, 2013Applicant: SMITH & NEPHEW, INC.Inventors: Brian W. Mckinnon, Ruxandra Cristiana Marinescu Tanasoca, Randy C. Winebarger, William L. Bowers, JR., James Bennett Wiebe, III, Nathaniel Milton Lenz, Zachary Christopher Wilkinson, Sean M. Haddock, Ryan Lloyd Landon
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Publication number: 20130203031Abstract: Systems and methods for optimizing parameters of an orthopaedic procedure for a particular patient, including parameters relating to the anatomic and biomechanic fit of an implant or implant system implanted into the patient's joint. These systems and methods may utilize patient-specific information gathered pre-operatively in conjunction with optimization algorithms to determine an optimal implant design and an optimal position and orientation for implantation of the implant into the particular patient's joint.Type: ApplicationFiled: August 15, 2011Publication date: August 8, 2013Applicant: SMITH & NEPHEW, INC.Inventors: Brian W. Mckinnon, Ruxandra Cristiana Marinescu Tanasoca, Randy C. Winebarger, William L. Bowers, JR., James Bennett Wiebe, III, Nathaniel Milton Lenz, Zachary Christopher Wilkinson, Sean M. Haddock, Ryan Lloyd Landon
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Publication number: 20120197409Abstract: A tibial insert includes a base and a post extending from the base along a longitudinal axis. The post has a medial surface, a lateral surface, and a height along the longitudinal axis. The medial surface has a medial section, and the lateral surface has a lateral section oriented substantially parallel to the medial section. The medial section and the lateral section each have a width in a substantially anterior-posterior direction that is sufficient to enable varus/valgus constraint over a flexion/extension range from extension to about 90 to 120 degrees of flexion when the tibial insert is mated with a femoral component.Type: ApplicationFiled: January 27, 2012Publication date: August 2, 2012Applicant: SMITH & NEPHEW, INC.Inventors: Brian William McKinnon, Nathaniel Milton Lenz, Scott Kennedy Laster, Michael D. Ries, Steven B. Haas
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Publication number: 20120041566Abstract: An orthopaedic implant including a base portion and first and second transverse portions extending transversely from the base portion to thereby define an inner region of the implant sized for receipt of an end portion of a bone therein. The implant further includes at least one anchor structure projecting from the base portion and sized and configured for receipt within an opening formed in the end portion of the bone. The anchor structure extends along a longitudinal axis and includes a proximal end attached to the base portion and an opposite distal end, and further includes a tapered outer surface that inwardly tapers in a proximal-to-distal direction along the longitudinal axis. In one embodiment, the anchor structure also includes one or more grooves extending into the tapered outer surface, with a flowable material positioned about at least a portion of the tapered outer surface and positioned within the grooves, and with the flowable material configured to cure to a hardened state.Type: ApplicationFiled: August 11, 2011Publication date: February 16, 2012Applicant: Smith & Nephew, Inc.Inventors: Nathaniel Milton Lenz, Zachary Christopher Wilkinson
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Publication number: 20100331848Abstract: Methods and apparatus for performing knee arthroplasty, including, but not limited to, bicruciate retaining knee arthroplasty, are described herein. Methods and apparatus for preparing a distal femur for a femoral implant as well as methods and apparatus for preparing a proximal tibia for a tibial implant are described. These methods and apparatus, in at least some embodiments and uses, facilitate decreasing the complexity of knee arthroplasty procedures such as bicruciate retaining procedures, while maintaining, if not improving on, the safety, accuracy and/or effectiveness of such procedures.Type: ApplicationFiled: May 28, 2010Publication date: December 30, 2010Inventors: Richard Michael Smith, Zachary Christopher Wilkinson, Nathaniel Milton Lenz, Brian W. McKinnon, David A. Drucker