Patents by Inventor Peter Stanley Walker

Peter Stanley Walker 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: 20200000598
    Abstract: A replacement knee implant has a femoral implant and a tibial implant, each of which are inset in a bone surface. The tibial implant is generally elongated with one end rounded and an opposite end conforming to the shape of the tibia, and is made of a metal alloy or a ceramic. The upper surface is dished while the lower surface is planar and can be parallel or sloped relative to the upper surface, and can have a keel for fixation. The femoral implant for implementation in a femoral condyle is rounded such that, when implemented, the femoral implant is flush at the anterior and posterior sides and protruding away from the femur between the anterior and posterior ends. The femoral implant can have an elongated keel for extending into the femur, and can be made from a highly cross-linked polyethylene.
    Type: Application
    Filed: September 13, 2019
    Publication date: January 2, 2020
    Applicant: New York University
    Inventors: Peter Stanley Walker, Joseph A. Bosco
  • Patent number: 10441428
    Abstract: A replacement knee implant has a femoral implant and a tibial implant, each of which are inset in a bone surface. The tibial implant is generally elongated with one end rounded and an opposite end conforming to the shape of the tibia, and is made of a metal alloy or a ceramic. The upper surface is dished while the lower surface is planar and can be parallel or sloped relative to the upper surface, and can have a keel for fixation. The femoral implant for implementation in a femoral condyle is rounded such that, when implemented, the femoral implant is flush at the anterior and posterior sides and protruding away from the femur between the anterior and posterior ends. The femoral implant can have an elongated keel for extending into the femur, and can be made from a highly cross-linked polyethylene.
    Type: Grant
    Filed: May 3, 2011
    Date of Patent: October 15, 2019
    Assignee: New York University
    Inventors: Peter Stanley Walker, Joseph A. Bosco
  • Patent number: 10413414
    Abstract: A total knee replacement, comprising a femoral and a tibial component in articulating contact that can restore normal joint function. The articulation between the two components is controlled by four guide surfaces.
    Type: Grant
    Filed: July 8, 2016
    Date of Patent: September 17, 2019
    Assignee: NEW YORK UNIVERSITY
    Inventor: Peter Stanley Walker
  • Publication number: 20190224016
    Abstract: The present invention relates to devices and methods for balancing joints, including knee joints. The devices convert unequal forces at a joint to a rotation or displacement of a pointer or gauge. The devices are able to display the relative difference in force between the lateral and medial sides of a joint from flexion to extension. In certain aspects, the devices are useful for balancing the knee during total knee surgery. The devices can be inserted between the trial femoral and tibial components of the knee and measures whether one condyle experiences more force than the other.
    Type: Application
    Filed: January 25, 2019
    Publication date: July 25, 2019
    Inventors: Peter Stanley Walker, Thomas Alfred Einhorn
  • Publication number: 20180256345
    Abstract: A total knee replacement prosthesis is presented whose bearing surfaces are derived from an anatomically representative femur and a modified baseline tibial surface. The contacting femoral and tibial bearing surfaces include the inter-condylar as well as condylar regions.
    Type: Application
    Filed: March 1, 2018
    Publication date: September 13, 2018
    Inventor: Peter Stanley Walker
  • Patent number: 9931215
    Abstract: A total knee replacement prosthesis is presented whose bearing surfaces are derived from an anatomically representative femur and a modified baseline tibial surface. The contacting femoral and tibial bearing surfaces include the inter-condylar as well as condylar regions. The modified baseline tibial surface is generated by modifying a baseline tibial surface. For example, the baseline tibial surface can be flattened mathematically to generate the modified baseline tibial surface.
    Type: Grant
    Filed: October 11, 2011
    Date of Patent: April 3, 2018
    Assignee: New York University
    Inventor: Peter Stanley Walker
  • Patent number: 9907662
    Abstract: A total knee replacement whose bearing surfaces are derived from an anatomically representative femur and a modified baseline tibial surface. The contacting femoral and tibial bearing surfaces include the inter-condylar as well as condylar regions. The modified baseline tibial surface is generated by modifying a baseline tibial surface. For example, the baseline tibial surface can be flattened mathematically to generate the modified baseline tibial surface.
    Type: Grant
    Filed: May 2, 2017
    Date of Patent: March 6, 2018
    Assignee: New York University
    Inventor: Peter Stanley Walker
  • Publication number: 20170231772
    Abstract: A total knee replacement whose bearing surfaces are derived from an anatomically representative femur and a modified baseline tibial surface. The contacting femoral and tibial bearing surfaces comprise the inter-codylar as well as condylar regions.
    Type: Application
    Filed: May 2, 2017
    Publication date: August 17, 2017
    Applicant: New York University
    Inventor: Peter Stanley Walker
  • Publication number: 20170020674
    Abstract: A total knee replacement, comprising a femoral and a tibial component in articulating contact that can restore normal joint function. The articulation between the two components is controlled by four guide surfaces.
    Type: Application
    Filed: July 8, 2016
    Publication date: January 26, 2017
    Applicant: New York University
    Inventor: Peter Stanley Walker
  • Patent number: 9125747
    Abstract: A replacement knee implant has a femoral implant and a tibial implant, each of which are inset in a bone surface. The tibial implant is generally elongated with one end rounded and an opposite end conforming to the shape of the tibia, and is made of a metal alloy or a ceramic. The upper surface is dished while the lower surface is planar and can be parallel or sloped relative to the upper surface. The femoral implant for implementation in a femoral condyle is rounded such that, when implemented, the femoral implant is flush at the anterior and posterior sides and protruding away from the femur between the anterior and posterior ends. The femoral implant can have an elongated keel for extending into the femur, and can be made from a highly cross-linked polyethylene.
    Type: Grant
    Filed: November 7, 2013
    Date of Patent: September 8, 2015
    Assignee: NEW YORK UNIVERSITY
    Inventors: Peter Stanley Walker, Joseph A. Bosco
  • Patent number: 9023111
    Abstract: A total knee replacement prosthesis comprising condylar and intercondylar bearing surfaces configured to manage anterior/posterior displacement between the articulating femoral and tibial components.
    Type: Grant
    Filed: July 31, 2013
    Date of Patent: May 5, 2015
    Assignee: New York University
    Inventor: Peter Stanley Walker
  • Publication number: 20150057759
    Abstract: A method and apparatus for correcting varus deformity comprises cutting a horizontal slot in the upper medial portion of the tibia. The slot is opened by the application of external force and a wedge is inserted to maintain the opening. The opening of the slot corrects the position and orientation of the deformed medial plateau.
    Type: Application
    Filed: August 12, 2014
    Publication date: February 26, 2015
    Applicant: New York University
    Inventor: Peter Stanley Walker
  • Publication number: 20140067079
    Abstract: A replacement knee implant has a femoral implant and a tibial implant, each of which are inset in a bone surface. The tibial implant is generally elongated with one end rounded and an opposite end conforming to the shape of the tibia, and is made of a metal alloy or a ceramic. The upper surface is dished while the lower surface is planar and can be parallel or sloped relative to the upper surface. The femoral implant for implementation in a femoral condyle is rounded such that, when implemented, the femoral implant is flush at the anterior and posterior sides and protruding away from the femur between the anterior and posterior ends. The femoral implant can have an elongated keel for extending into the femur, and can be made from a highly cross-linked polyethylene.
    Type: Application
    Filed: November 7, 2013
    Publication date: March 6, 2014
    Applicant: NEW YORK UNIVERSITY
    Inventors: Peter Stanley Walker, Joseph A. Bosco
  • Publication number: 20140046452
    Abstract: A total knee replacement prosthesis comprising condylar and intercondylar bearing surfaces configured to manage anterior/posterior displacement between the articulating femoral and tibial components.
    Type: Application
    Filed: July 31, 2013
    Publication date: February 13, 2014
    Applicant: New York University
    Inventor: Peter Stanley Walker
  • Patent number: 8603179
    Abstract: A replacement knee implant has a femoral implant and a tibial implant, each of which are inset in a bone surface. The tibial implant is generally elongated with one end rounded and an opposite end conforming to the shape of the tibia, and is made of a metal alloy or a ceramic. The upper surface is dished while the lower surface is planar and can be parallel or sloped relative to the upper surface. The femoral implant for implementation in a femoral condyle is rounded such that, when implemented, the femoral implant is flush at the anterior and posterior sides and protruding away from the femur between the anterior and posterior ends. The femoral implant can have an elongated keel for extending into the femur, and can be made from a highly cross-linked polyethylene.
    Type: Grant
    Filed: March 13, 2012
    Date of Patent: December 10, 2013
    Assignee: New York University
    Inventors: Peter Stanley Walker, Joseph A. Bosco
  • Publication number: 20130204382
    Abstract: A total knee replacement prosthesis is presented whose bearing surfaces are derived from an anatomically representative femur and a modified baseline tibial surface. The contacting femoral and tibial bearing surfaces comprise the inter-condylar as well as condylar regions.
    Type: Application
    Filed: October 11, 2011
    Publication date: August 8, 2013
    Applicant: New York University
    Inventor: Peter Stanley Walker
  • Patent number: 8298288
    Abstract: A recess-ramp knee joint prosthesis comprising a femoral and a tibial component is configured to reproduce normal kinematics and function. Asymmetric condular surfaces and a cupola of the femoral component interact with corresponding dished surfaces and a ramp of the tibia thereby duplicating the behavior of the anatomical knee.
    Type: Grant
    Filed: June 22, 2009
    Date of Patent: October 30, 2012
    Assignee: New York University
    Inventor: Peter Stanley Walker
  • Patent number: 8292965
    Abstract: An artificial knee joint is described that includes a femoral component with a specially shaped bearing surface and a tibial component, whose surface interacts with the femoral surfaces. The interaction provides for the required motion and stability characteristics. The interaction between the femoral and tibial surfaces is such that as the knee is flexed to maximum, the femoral component moves posteriorly on the tibial surface, by an amount similar to that in the anatomic knee. The opposite motion, roll forward of the femur from a fully flexed to a more extended position, is accomplished by varying the outward radii of the lateral and medial femoral bearing surfaces, together with a ramp on the postero-lateral and postero-medial regions of the tibial surfaces.
    Type: Grant
    Filed: February 11, 2008
    Date of Patent: October 23, 2012
    Assignee: New York University
    Inventor: Peter Stanley Walker
  • Patent number: 8292964
    Abstract: An artificial knee joint that includes a femoral component with a specially shaped bearing surface and a tibial component, whose surface interacts with the femoral surfaces. The interaction provides for the motion and stability characteristics of the anatomic knee. The interaction between the femoral and tibial surfaces is such that as the knee is flexed to maximum, the femoral component moves posteriorly on the tibial surface, more so on the lateral side than on the medial side. This is accomplished by the interaction of a projecting tibial post inside a cupola in the center of the femoral component, and by the saggital radius on the medial side being smaller than that on the lateral side. The prevention of anterior sliding of the femur on the tibia in early flexion is accomplished by the interaction between a distal-anterior recess on the medial side of the femur and an apposing raised pad on the tibial surface.
    Type: Grant
    Filed: October 4, 2006
    Date of Patent: October 23, 2012
    Assignee: New York University
    Inventor: Peter Stanley Walker
  • Publication number: 20120116524
    Abstract: A replacement knee implant has a femoral implant and a tibial implant, each of which are inset in a bone surface. The tibial implant is generally elongated with one end rounded and an opposite end conforming to the shape of the tibia, and is made of a metal alloy or a ceramic. The upper surface is dished while the lower surface is planar and can be parallel or sloped relative to the upper surface, and can have a keel for fixation. The femoral implant for implementation in a femoral condyle is rounded such that, when implemented, the femoral implant is flush at the anterior and posterior sides and protruding away from the femur between the anterior and posterior ends. The femoral implant can have an elongated keel for extending into the femur, and can be made from a highly cross-linked polyethylene.
    Type: Application
    Filed: May 3, 2011
    Publication date: May 10, 2012
    Applicant: NEW YORK UNIVERSITY
    Inventors: Peter Stanley WALKER, Joseph A. BOSCO