Patents Assigned to Alexandria Research Technologies, Inc.
  • Patent number: 8425516
    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: April 4, 2008
    Date of Patent: April 23, 2013
    Assignee: Alexandria Research Technologies, Inc.
    Inventors: Wesley D. Johnson, Gerard A. Engh, Aaron J. Bisek, Michael N. Travanty, Robert E. Kohler, Daryl R. Pilarski, Anthony G. Kremer, Kevin D. Swanson, Kevin T. Stables
  • Patent number: 8128631
    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: Grant
    Filed: July 27, 2006
    Date of Patent: March 6, 2012
    Assignee: Alexandria Research Technologies, Inc.
    Inventors: Wesley D. Johnson, Daryl R. Pilarski
  • Publication number: 20090265012
    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: Application
    Filed: April 20, 2009
    Publication date: October 22, 2009
    Applicant: Alexandria Research Technologies, Inc.
    Inventors: Gerard A. Engh, Wesley D. Johnson
  • Patent number: 7520901
    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: August 31, 2006
    Date of Patent: April 21, 2009
    Assignee: Alexandria Research Technologies, Inc.
    Inventors: Gerard A. Engh, Wesley D. Johnson