Patents Assigned to Alexandria Research Technologies, LLC
  • Publication number: 20110270258
    Abstract: Methods and devices for sculpting bones, particularly in preparation for implanting prosthetic devices to replace articulating bone joint surfaces. Improved bone removal devices including burr mills driven by gears and loop drives are provided. Reciprocating cutters and belt cutters are also provided. Some devices have either integral or removable expandable portions to vary the force and bone resection depth. Devices can have irrigation ports and plenums to remove bone fragments. Some cutters are dual cutters, adapted to remove bone in two or more regions, such as the knee joint, simultaneously.
    Type: Application
    Filed: July 15, 2011
    Publication date: November 3, 2011
    Applicant: Alexandria Research Technologies, LLC
    Inventors: Wesley D. Johnson, Gerard A. Engh, Robert E. Kohler, Aaron J. Bisek, Michael N. Travanty, Daryl R. Pilarski
  • Patent number: 7985225
    Abstract: Methods and devices for sculpting bones, particularly in preparation for implanting prosthetic devices to replace articulating bone joint surfaces. Improved bone removal devices including burr mills driven by gears and loop drives are provided. Reciprocating cutters and belt cutters are also provided. Some devices have either integral or removable expandable portions to vary the force and bone resection depth. Devices can have irrigation ports and plenums to remove bone fragments. Some cutters are dual cutters, adapted to remove bone in two or more regions, such as the knee joint, simultaneously.
    Type: Grant
    Filed: May 1, 2007
    Date of Patent: July 26, 2011
    Assignee: Alexandria Research Technologies, LLC
    Inventors: Wesley D. Johnson, Gerard A. Engh, Robert E. Kohler, Aaron J. Bisek, Michael N. Travanty, Daryl R. Pilarski
  • Patent number: 7896922
    Abstract: The present invention provides a method and device for restoring individual patient joint kinematic using minimally invasive surgical procedures. The instrumentation of the invention sculpts the articular surface of a first bone that normally articulates in a predetermined manner with a second bone. The implant system is comprised of implants that provide intraoperative surgical options for articular constraint and facilitate proper alignment and orientation of the joint to restore kinematics as defined by the individual patient anatomy.
    Type: Grant
    Filed: April 20, 2009
    Date of Patent: March 1, 2011
    Assignee: Alexandria Research Technologies, LLC
    Inventors: Gerard A. Engh, Wesley D. Johnson
  • Publication number: 20110015749
    Abstract: The present invention provides a modular device for restoring individual joint kinematics using minimally invasive surgical procedures. The modular implants include distinct components that include tethering means. The modular implants provide intraoperative surgical options for articular constraint and facilitate proper alignment and orientation of the joint to restore kinematics as defined by the individual patient anatomy.
    Type: Application
    Filed: June 18, 2010
    Publication date: January 20, 2011
    Applicant: Alexandria Research Technologies, LLC
    Inventors: Gerard A. Engh, Wesley D. Johnson
  • Publication number: 20100280624
    Abstract: The present invention provides a modular device for restoring individual joint kinematics using minimally invasive surgical procedures. The modular implants include distinct components that include interconnection means. The modular implants provide intraoperative surgical options for articular constraint and facilitate proper alignment and orientation of the joint to restore kinematics as defined by the individual patient anatomy.
    Type: Application
    Filed: June 18, 2010
    Publication date: November 4, 2010
    Applicant: Alexandria Research Technologies, LLC
    Inventors: GERARD A. ENGH, Wesley D. Johnson
  • Patent number: 7758652
    Abstract: The present invention provides a modular device for restoring individual joint kinematics using minimally invasive surgical procedures. The modular implants include distinct components that include interconnection means and tethering means. The modular implants provide intraoperative surgical options for articular constraint and facilitate proper alignment and orientation of the joint to restore kinematics as defined by the individual patient anatomy.
    Type: Grant
    Filed: July 20, 2005
    Date of Patent: July 20, 2010
    Assignee: Alexandria Research Technologies, LLC
    Inventors: Gerard A. Engh, Wesley D. Johnson
  • Publication number: 20100145343
    Abstract: Methods and devices for sculpting bones, particularly in preparation for implanting prosthetic devices to replace articulating bone joint surfaces. Improved bone removal devices including burr mills driven by gears and loop drives are provided. Reciprocating cutters and belt cutters are also provided. Some devices have either integral or removable expandable portions to vary the force and bone resection depth. Devices can have irrigation ports and plenums to remove bone fragments. Some cutters are dual cutters, adapted to remove bone in two or more regions, such as the knee joint, simultaneously.
    Type: Application
    Filed: April 4, 2008
    Publication date: June 10, 2010
    Applicant: Alexandria Research Technologies, LLC
    Inventors: Wesley D. Johnson, Gerard A. Engh, Aaron J. Bisek, Micheal N. Travanty, Robert E. Kohler, Daryl R. Pilarski, Anthony G. Kremer, Kevin D. Swanson, Kevin T. Staples
  • Patent number: 7604637
    Abstract: A method and apparatus for minimally invasive total joint replacement. The method involves sculpting the articular surface of a second bone that normally articulates with a first bone by attaching a bone sculpting tool directly or indirectly to the first bone with the tool in bone sculpting engagement with the articular surface of the second bone, and then sculpting the articular surface of the second bone with the joint reduced and moving one bone with respect to the other. An implant is placed to replace the articular surface of the second bone using an impaction device directly or indirectly attached to the first bone, wherein the force to place the implant is reacted by the second bone and the first bone.
    Type: Grant
    Filed: May 5, 2003
    Date of Patent: October 20, 2009
    Assignee: Alexandria Research Technologies, LLC
    Inventors: Wesley D. Johnson, Gerard Engh
  • Patent number: 7559928
    Abstract: A method and apparatus for minimally invasive total joint replacement is disclosed. The method involves sculpting the articular surface of a second bone that normally articulates with a first bone by attaching or supporting a bone sculpting tool directly or indirectly to the first bone with the tool in sculpting engagement with the articular surface of the second bone, and then sculpting the articular surface of the second bone with the joint reduced. The reamer system includes a reamer drive, a grater, a handle and a femoral broach.
    Type: Grant
    Filed: September 27, 2006
    Date of Patent: July 14, 2009
    Assignee: Alexandria Research Technologies, LLC
    Inventors: Wesley D. Johnson, Gerard A. Engh, Mike Travanty
  • Publication number: 20080234688
    Abstract: A system and method for placing an implant into or onto supporting bone, or between adjacent bones, without impaction is disclosed. The system includes an implant, a distracter, and a sleeve. Optionally, the invention includes an alignment guide, a surgical navigational tracker, and a bone displacer. The sleeve is structured to interpose the implant and supporting bone and provide a differential engagement force between the sleeve-implant interface and the sleeve-bone interface to preferentially move the implant into, onto or between supporting bone structures.
    Type: Application
    Filed: July 27, 2006
    Publication date: September 25, 2008
    Applicant: ALEXANDRIA RESEARCH TECHNOLOGIES, LLC
    Inventors: Wesley D. Johnson, Daryl R. Pilarski
  • Publication number: 20070276394
    Abstract: A method and apparatus for minimally invasive total joint replacement is disclosed. The method involves sculpting the articular surface of a second bone that normally articulates with a first bone by attaching or supporting a bone sculpting tool directly or indirectly to the first bone with the tool in sculpting engagement with the articular surface of the second bone, and then sculpting the articular surface of the second bone with the joint reduced. The reamer system includes a reamer drive, a grater, a handle and a femoral broach.
    Type: Application
    Filed: September 27, 2006
    Publication date: November 29, 2007
    Applicant: ALEXANDRIA RESEARCH TECHNOLOGIES, LLC
    Inventors: Wesley Johnson, Gerard Engh, Mike Travanty
  • Publication number: 20070270973
    Abstract: A method and apparatus for minimally invasive total joint replacement. The method involves sculpting the articular surface of a second bone that normally articulates with a first bone by attaching a bone sculpting tool directly or indirectly to the first bone with the tool in bone sculpting engagement with the articular surface of the second bone, and then sculpting the articular surface of the second bone with the joint reduced and moving one bone with respect to the other. An implant is placed to replace the articular surface of the second bone using an impaction device directly or indirectly attached to the first bone.
    Type: Application
    Filed: April 10, 2007
    Publication date: November 22, 2007
    Applicant: ALEXANDRIA RESEARCH TECHNOLOGIES, LLC
    Inventors: Wesley Johnson, Daryl Pilarski, Aaron Bisek, Robert Kohler
  • Publication number: 20070260253
    Abstract: Methods and devices for sculpting bones, particularly in preparation for implanting prosthetic devices to replace articulating bone joint surfaces. Improved bone removal devices including burr mills driven by gears and loop drives are provided. Reciprocating cutters and belt cutters are also provided. Some devices have either integral or removable expandable portions to vary the force and bone resection depth. Devices can have irrigation ports and plenums to remove bone fragments. Some cutters are dual cutters, adapted to remove bone in two or more regions, such as the knee joint, simultaneously.
    Type: Application
    Filed: May 1, 2007
    Publication date: November 8, 2007
    Applicant: ALEXANDRIA RESEARCH TECHNOLOGIES, LLC
    Inventors: Wesley Johnson, Gerard Engh, Robert Kohler, Aaron Bisek, Michael Travanty, Daryl Pilarski
  • Publication number: 20070173858
    Abstract: The present invention provides a method and device for restoring individual patient joint kinematics using minimally invasive surgical procedures. The instrumentation of the invention sculpts the articular surface of a first bone that normally articulates in a predetermined manner with a second bone. The instrumentation includes a bone sculpting tool and a mount for attaching the tool to the second bone. The implant system is comprised of implants that provide intraoperative surgical options for articular constraint and facilitate proper alignment and orientation of the joint to restore kinematics as defined by the individual patient anatomy.
    Type: Application
    Filed: July 20, 2006
    Publication date: July 26, 2007
    Applicant: ALEXANDRIA RESEARCH TECHNOLOGIES, LLC
    Inventors: Gerard Engh, Wesley Johnson
  • Publication number: 20070078517
    Abstract: The present invention provides a method and device for restoring individual patient joint kinematics using minimally invasive surgical procedures. The instrumentation of the invention sculpts the articular surface of a first bone that normally articulates in a predetermined manner with a second bone. The instrumentation includes a bone sculpting tool and a mount for attaching the tool to the second bone. The implant system is comprised of implants that provide intraoperative surgical options for articular constraint and facilitate proper alignment and orientation of the joint to restore kinematics as defined by the individual patient anatomy.
    Type: Application
    Filed: August 31, 2006
    Publication date: April 5, 2007
    Applicant: ALEXANDRIA RESEARCH TECHNOLOGIES, LLC
    Inventors: Gerard Engh, Wesley Johnson
  • Patent number: 7115131
    Abstract: The present invention provides a method and device for restoring individual patient joint kinematics using minimally invasive surgical procedures. The instrumentation of the invention sculpts the articular surface of a first bone that normally articulates in a predetermined manner with a second bone. The instrumentation includes a bone sculpting tool and a mount for attaching the tool to the second bone. The implant system is comprised of implants that provide intraoperative surgical options for articular constraint and facilitate proper alignment and orientation of the joint to restore kinematics as defined by the individual patient anatomy.
    Type: Grant
    Filed: May 29, 2002
    Date of Patent: October 3, 2006
    Assignee: Alexandria Research Technologies, LLC
    Inventors: Gerard A. Engh, Wesley D. Johnson
  • Publication number: 20060004460
    Abstract: The present invention provides a modular device for restoring individual joint kinematics using minimally invasive surgical procedures. The modular implants include distinct components that include interconnection means and tethering means. The modular implants provide intraoperative surgical options for articular constraint and facilitate proper alignment and orientation of the joint to restore kinematics as defined by the individual patient anatomy.
    Type: Application
    Filed: July 20, 2005
    Publication date: January 5, 2006
    Applicant: Alexandria Research Technologies, LLC
    Inventors: Gerard Engh, Wesley Johnson
  • Patent number: 6723102
    Abstract: A method and apparatus for minimally invasive total joint replacement. The method involves sculpting the articular surface of a second bone that normally articulates with a first bone by attaching a bone sculpting tool directly or indirectly to the first bone with the tool in bone sculpting engagement with the articular surface of the second bone, and then sculpting the articular surface of the second bone with the joint reduced and moving one bone with respect to the other. An implant is placed to replace the articular surface of the second bone using an impaction device directly or indirectly attached to the first bone, wherein the force to place the implant is reacted by the second bone and the first bone.
    Type: Grant
    Filed: February 12, 2002
    Date of Patent: April 20, 2004
    Assignee: Alexandria Research Technologies, LLC
    Inventors: Wesley D. Johnson, Gerard Engh