Patents by Inventor Anthony K. Hedley

Anthony K. Hedley 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: 20120245589
    Abstract: A method for positioning a bone cutting guide on a tibia may begin with coupling a bone cut positioning apparatus with a tibia. The method may also include adjusting the positioning apparatus in a varus/valgus orientation to shine a light emitted by a light emitter approximately along a midline of an anterior surface of the tibia, swinging a pivoting arm about a pivot joint to direct the emitted light along a medial surface of the tibia, adjusting the positioning apparatus in an anterior/posterior orientation to shine the light approximately along a midline of the medial surface, contacting a stylus with a proximal end of the tibia to select a cutting depth for a bone cut to be made on the tibia, and attaching the bone cutting guide to the tibia in a position determined by the positioning apparatus.
    Type: Application
    Filed: March 9, 2012
    Publication date: September 27, 2012
    Applicant: SYNVASIVE TECHNOLOGY, INC.
    Inventors: Michael G. Fisher, Anthony K. Hedley, Russell T. Nevins, Kenneth D. Johannaber
  • Publication number: 20110106092
    Abstract: A method for positioning a bone cut on a bone may involve: coupling a bone cut positioning apparatus with a body bone; adjusting the positioning apparatus in a varus/valgus orientation relative to the body bone; adjusting the positioning apparatus in an anterior/posterior orientation relative to the body bone; and adjusting the positioning apparatus up or down to select a bone resection level.
    Type: Application
    Filed: March 22, 2010
    Publication date: May 5, 2011
    Applicant: SYNVASIVE, INC.
    Inventors: Michael G. FISHER, Anthony K. HEDLEY, Russell T. NEVINS, Kenneth D. JOHANNABER
  • Publication number: 20110106091
    Abstract: A method for positioning a bone cutting guide on a tibia may involve coupling a cutting guide positioning apparatus with a tibia, adjusting the positioning apparatus in a varus/valgus orientation, adjusting the positioning apparatus in an anterior/posterior orientation, adjusting the positioning apparatus up or down to select a tibial bone resection level, and contacting a cutting guide with the tibia, using the adjusted positioning apparatus.
    Type: Application
    Filed: November 11, 2009
    Publication date: May 5, 2011
    Applicant: SYNVASIVE TECHNOLOGY, INC.
    Inventors: Michael G. FISHER, Anthony K. HEDLEY, Russell T. NEVINS
  • Patent number: 7837737
    Abstract: A total stabilized femoral knee prosthesis is disclosed. Such prosthesis is capable of being formed with varying condyle thicknesses, and may include a stem, stabilizer box and articular surface. Methods of implanting such a prosthesis, as well as of manufacturing same are also disclosed herein.
    Type: Grant
    Filed: August 15, 2006
    Date of Patent: November 23, 2010
    Assignee: Howmedica Osteonics Corp.
    Inventors: Anthony K. Hedley, Damon Servidio
  • Publication number: 20090287310
    Abstract: A device for performing a surgical procedure on a knee includes an adjustable femoral portion, a tibial portion and at least one sensor coupled with the femoral and/or tibial portions to sense pressure exerted by the femoral and tibial portions against one another. The femoral portion is adapted for removably coupling with a distal end of a femur to adjust tension in soft tissue adjacent the knee and has at least one positioning feature adapted to move relative to the distal end of the femur as the femoral portion is adjusted, thus helping position a femoral prosthetic on the distal end of the femur. The sensor(s) may be adapted to sense pressure at medial and lateral sides of the knee, and relative pressures may be displayed as data on a visual display. Adjustments to the femoral member may be made to balance pressure at flexion and extension of the knee.
    Type: Application
    Filed: July 29, 2009
    Publication date: November 19, 2009
    Applicant: Synvasive Technology, Inc.
    Inventors: Michael G. Fisher, Anthony K. Hedley, Michael Howard, Kevin Cordes, Toshinobu Katsuya
  • Patent number: 7578821
    Abstract: A device for performing a surgical procedure on a knee includes an adjustable femoral portion, a tibial portion and at least one sensor coupled with the femoral and/or tibial portions to sense pressure exerted by the femoral and tibial portions against one another. The femoral portion is adapted for removably coupling with a distal end of a femur to adjust tension in soft tissue adjacent the knee and has at least one positioning feature adapted to move relative to the distal end of the femur as the femoral portion is adjusted, thus helping position a femoral prosthetic on the distal end of the femur. The sensor(s) may be adapted to sense pressure at medial and lateral sides of the knee, and relative pressures may be displayed as data on a visual display. Adjustments to the femoral member may be made to balance pressure at flexion and extension of the knee.
    Type: Grant
    Filed: October 25, 2004
    Date of Patent: August 25, 2009
    Assignee: Synvasive Technology, Inc.
    Inventors: Michael G. Fisher, Anthony K. Hedley, Michael Howard, Kevin Cordes, Toshinobu Katsuya
  • Patent number: 7442196
    Abstract: Dynamic knee balancing devices, systems and methods provide for enhanced total knee arthroplasty (“TKA”) procedures. Devices generally include a stationary femoral member for removably attaching to a distal femur and an adjustable femoral member coupled with the stationary member for adjusting ligament tension of the knee. The adjustable femoral member includes at least one positioning feature for providing positional and/or orientation information for facilitating the TKA procedure. Additionally, the adjustable femoral member is movably couplable with a tibial member engaged with the proximal tibia to allow movement of the knee through a range of motion without removing the device from the joint space. When the adjustable femoral member is adjusted, the positional feature(s) move relative to the distal femur to provide positional information.
    Type: Grant
    Filed: February 6, 2004
    Date of Patent: October 28, 2008
    Assignee: Synvasive Technology, Inc.
    Inventors: Michael G. Fisher, Anthony K. Hedley, Michael Howard, Kevin Cordes, Toshinobu Katsuya
  • Publication number: 20080140214
    Abstract: A total stabilized femoral knee prosthesis is disclosed. Such prosthesis is capable of being formed with varying condyle thicknesses, and may include a stem, stabilizer box and articular surface. Methods of implanting such a prosthesis, as well as of manufacturing same are also disclosed herein.
    Type: Application
    Filed: August 15, 2006
    Publication date: June 12, 2008
    Applicant: Howmedica Osteonics Corp.
    Inventors: Anthony K. Hedley, Damon Servidio
  • Patent number: 6102957
    Abstract: An improved asymmetric femoral hip stem component for use in cementless hip replacement procedures is described. The stem comprises a proximal region having a novel three-dimensional configuration to allow for better fit and stability of the stem within the femoral intramedullary canal with minimal removal of strong bone therefrom. The stem further includes a twist isolated in the mid-stem region to improve fit while minimizing enlargement of the femoral canal. A distal end comprising a rotated internal slot is also described, wherein the slot reduces bending stiffness of the stem in both the coronal and sagittal planes.
    Type: Grant
    Filed: July 1, 1998
    Date of Patent: August 15, 2000
    Assignee: Stryker Technlogies Corporation
    Inventors: Philip C. Noble, Anthony K. Hedley, Michael J. Schulzki, William J. Kelly, Jr.
  • Patent number: 6007581
    Abstract: An improved asymmetric femoral hip stem component for use in cementless hip replacement procedures is described. The stem comprises a proximal region having a novel three-dimensional configuration to allow for better fit and stability of the stem within the femoral intramedullary canal with minimal removal of strong bone therefrom. The stem further includes a twist isolated in the mid-stem region to improve fit while minimizing enlargement of the femoral canal. A distal end comprising a rotated internal slot is also described, wherein the slot reduces bending stiffness of the stem in both the coronal and sagittal planes.
    Type: Grant
    Filed: July 1, 1998
    Date of Patent: December 28, 1999
    Assignee: Stryker Technologies Corporation
    Inventors: Philip C. Noble, Anthony K. Hedley, Michael J. Schulzki, William J. Kelly, Jr.
  • Patent number: 5817097
    Abstract: A surgical saw blade guide or milling instrument guide comprising a guide body having a guiding surface thereon, and containing a magnet therein which exerts attractive force in a direction toward the guide body for attracting a bone saw blade or milling instrument to the guiding surface. The surgical saw blade guide or milling instrument guide can comprise a plurality of magnets and the magnet or magnets can themselves form part of the guiding surface. Also, a method of cutting a bone comprising the steps of magnetically attracting a surgical bone saw blade or milling instrument to a surgical saw blade guide or milling instrument guide containing a magnet, actuating a bone saw coupled to the bone saw blade or actuating a milling instrument, advancing the bone saw blade or milling instrument into the bone thereby cutting the bone, and detaching the saw blade or milling instrument from the guide.
    Type: Grant
    Filed: November 7, 1997
    Date of Patent: October 6, 1998
    Assignee: Synvasive Technology, Inc.
    Inventors: Michael J. Howard, Thomas V. White, Anthony K. Hedley, Oliver S. Mills
  • Patent number: 5776204
    Abstract: An improved asymmetric femoral hip stem component for use in cementless hip replacement procedures is described. The stem comprises a proximal region having a novel three-dimensional configuration to allow for better fit and stability of the stem within the femoral intramedullary canal with minimal removal of strong bone therefrom. The stem further includes a twist isolated in the mid-stem region to improve fit while minimizing enlargement of the femoral canal. A distal end comprising a rotated internal slot is also described, wherein the slot reduces bending stiffness of the stem in both the coronal and sagittal planes.
    Type: Grant
    Filed: May 24, 1996
    Date of Patent: July 7, 1998
    Assignee: Howmedica Inc.
    Inventors: Philip C. Noble, Anthony K. Hedley, Michael J. Schulzki, William J. Kelly, Jr.
  • Patent number: 5358534
    Abstract: A femoral component for a hip prosthesis has a distal portion defining a central longitudinal axis. The component has a generally conically shaped mid-shaft portion and a proximal portion with a shape based on the reamer and a shaped chisel used by the surgeon to prepare the proximal metaphysis and medullary canal. The proximal portion is shaped in a manner wherein a cross-section taken perpendicular to the central axis has a medial side formed as a first circular arc, a corner of the cross-section formed by the posterior and lateral sides as a second circular arc with a center on the central axis. The posterior side is arcuate and concave and tangent to the first and second circular arcs, with the anterior side being arcuate and convex.
    Type: Grant
    Filed: April 29, 1993
    Date of Patent: October 25, 1994
    Assignee: Howmedica Inc.
    Inventors: Michael W. Dudasik, Anthony K. Hedley, David S. Hungerford, Matthew P. Poggie