Patents Assigned to Cortek, Inc.
  • Publication number: 20110016800
    Abstract: Methods and apparatus for the formation of structures utilizing fill materials capable of hardening, such as concrete. The methods and apparatus may include the employment of enhanced load-bearing capabilities, which may yield substantial efficiencies in time, labor, materials and costs attendant to fill material formation. The methods and apparatus may be particularly suited for use with manufacturing and prefabrication processes.
    Type: Application
    Filed: October 1, 2010
    Publication date: January 27, 2011
    Applicant: CORTEK, INC.
    Inventor: M. Douglas Rutledge
  • Patent number: 7805908
    Abstract: Methods and apparatus for the formation of structures utilizing fill materials capable of hardening, such as concrete. The methods and apparatus may include the employment of enhanced load-bearing capabilities, which may yield substantial efficiencies in time, labor, materials and costs attendant to fill material formation. The methods and apparatus may be particularly suited for use with manufacturing and prefabrication processes.
    Type: Grant
    Filed: April 25, 2005
    Date of Patent: October 5, 2010
    Assignee: CorTek, Inc.
    Inventor: M. Douglas Rutledge
  • Patent number: 6962592
    Abstract: The present invention is an apparatus for cutting allograft bone implants from donor bone. Die sets of standard sizes are installed in a press. Donor bone is then placed in position between the upper and the lower parts of a matched cutting set comprising a hollow cylindrical cutting blade, a mandrel, and a table which establishes a gap around the mandrel which guides the blade. After the bone to be shaped has been properly placed, a shaped cutting blade is driven through the donor bone, producing a precisely shaped allograft implant. The invention provides for rapid change out of blades, rapid cleaning, and easy maintenance.
    Type: Grant
    Filed: September 11, 2002
    Date of Patent: November 8, 2005
    Assignee: Cortek, Inc.
    Inventors: Roland F. Gatturna, Andrew R. Sennett, Richard Faherty, Dale E. Whipple
  • Publication number: 20050193678
    Abstract: Methods and apparatus for the formation of structures utilizing fill materials capable of hardening, such as concrete. The methods and apparatus may include the employment of enhanced load-bearing capabilities, which may yield substantial efficiencies in time, labor, materials and costs attendant to fill material formation. The methods and apparatus may be particularly suited for use with manufacturing and prefabrication processes.
    Type: Application
    Filed: April 25, 2005
    Publication date: September 8, 2005
    Applicant: CorTek, Inc.
    Inventor: M. Rutledge
  • Patent number: 6800093
    Abstract: A spinal implant replaces excised tissue removed during spine surgery. This implant includes fasteners which firmly attach it to vertebrae adjacent to excised tissue so as to transmit tension and torsional loads to and from those vertebrae. The body of the implant has through cavities into which bone growth material is placed during surgery. The body of the implant also has a finite modulus of elasticity in compression so as to share compressive loads with emplaced bone growth material and with new bony growth facilitated by the emplaced material and the load sharing.
    Type: Grant
    Filed: January 7, 2003
    Date of Patent: October 5, 2004
    Assignee: Cortek, Inc.
    Inventors: James E. Nicholson, Scott G. Tromanhauser, Dale E. Whipple
  • Patent number: 6795477
    Abstract: A method for modulating the output of an optically pumped, tunable VCSEL. Two approaches are disclosed. In a first approach, the output of the VCSEL is modulated by modulating the pump laser. In a second approach, the output of the VCSEL is modulated by modulating a voltage applied across the active region.
    Type: Grant
    Filed: August 11, 2000
    Date of Patent: September 21, 2004
    Assignee: Cortek Inc.
    Inventors: Daryoosh Vakhshoori, Parviz Tayebati
  • Patent number: 6743257
    Abstract: The invention is a single piece, self seating and locking dynamic intervertebral spacer. The dynamic spacer is load-supporting but also able to undergo flexure in either or both the lateral and sagittal planes.
    Type: Grant
    Filed: November 21, 2001
    Date of Patent: June 1, 2004
    Assignee: Cortek, Inc.
    Inventor: Salvatore Castro
  • Patent number: 6679887
    Abstract: A spinal implant replaces excised tissue removed during spine surgery. This implant includes fasteners which firmly attach it to vertebrae adjacent to excised tissue so as to transmit tension and torsional loads to and from those vertebrae. The body of the implant has through cavities into which bone growth material is placed during surgery. The body of the implant also has a finite modulus of elasticity in compression so as to share compressive loads with emplaced bone growth material and with new bony growth facilitated by the emplaced material and the load sharing.
    Type: Grant
    Filed: June 4, 2001
    Date of Patent: January 20, 2004
    Assignee: Cortek, Inc.
    Inventors: James E. Nicholson, Scott G. Tromanhauser, Dale E. Whipple
  • Patent number: 6641613
    Abstract: The invention is a unitary implant or graft made of allograft bone or of similar material and shaped as a conjoined double dowel. Six embodiments of the implant are shown along with three embodiments for a vertebral distractor and reamer guide.
    Type: Grant
    Filed: January 30, 2002
    Date of Patent: November 4, 2003
    Assignee: Cortek, Inc.
    Inventor: Andrew R. Sennett
  • Publication number: 20030144736
    Abstract: The invention is a unitary implant or graft made of allograft bone or of similar material and shaped as a conjoined double dowel. Six embodiments of the implant are shown along with three embodiments for a vertebral distractor and reamer guide.
    Type: Application
    Filed: January 30, 2002
    Publication date: July 31, 2003
    Applicant: Cortek, Inc.
    Inventor: Andrew R. Sennett
  • Publication number: 20020077702
    Abstract: The invention is a single piece, self seating and locking dynamic intervertebral spacer. The dynamic spacer is load-supporting but also able to undergo flexure in either or both the lateral and sagittal planes.
    Type: Application
    Filed: November 21, 2001
    Publication date: June 20, 2002
    Applicant: Cortek, Inc.
    Inventor: Salvatore Castro
  • Patent number: 6261293
    Abstract: An end cut tool for making an end cut in bone is disclosed that comprises: A) a shaft having first and second ends, 1) the first end having a blade attached thereto for making the end cut in the bone, and 2) the second end having a handle attached thereto substantially perpendicular to the axis of the shaft to facilitate rotation of the shaft, and B) at least one interlock located between the first and second ends, the interlock preventing rotation of the blade during insertion into a patient and then preventing withdrawal of the tool during use.
    Type: Grant
    Filed: September 30, 1999
    Date of Patent: July 17, 2001
    Assignee: Cortek, Inc.
    Inventors: James E. Nicholson, Scott G. Tromanhauser, Dale E. Whipple
  • Patent number: 6261295
    Abstract: A guide comprising a tube having a first end and a second end, the tube: A) being configured for insertable acceptance therethrough of a shaft of a tool designed to make cuts in a first vertebra and in a second vertebra simultaneously; B) having tangs extending from the first end thereof, wherein the tangs are tapered to conform to natural lordosis; and C) having a depth stop located on the second end thereof.
    Type: Grant
    Filed: October 4, 1999
    Date of Patent: July 17, 2001
    Assignee: Cortek, Inc.
    Inventors: James E. Nicholson, Scott G. Tromanhauser, Dale E. Whipple
  • Patent number: 6258094
    Abstract: A surgical apparatus driver device for use with a subcombination comprising A) a tome for cutting at least one dovetail in bone comprising a shaft having first and second ends, the first end having attached thereto a blade for cutting the dovetail in the bone and the second end having attached thereto an extension for engagement with a mechanical energy transmission mechanism, and B) a guide comprising a tube having a first end and a second end, the tube being configured for acceptance of the shaft of the tome and having tangs extending from one end thereof; wherein the driver comprises a mechanism for engagement with the subcombination, a piston, and a mechanism for providing power to the piston for delivery of a multiplicity of impact to the subcombination.
    Type: Grant
    Filed: October 4, 1999
    Date of Patent: July 10, 2001
    Assignee: Cortek, Inc.
    Inventors: James E. Nicholson, Scott G. Tromanhauser, Dale E. Whipple
  • Patent number: 6241769
    Abstract: A spinal implant replaces excised tissue removed during spine surgery. This implant includes fasteners which firmly attach it to vertebrae adjacent to excised tissue so as to transmit tension and torsional loads to and from those vertebrae. The body of the implant has through cavities into which bone growth material is placed during surgery. The body of the implant also has a finite modulus of elasticity in compression so as to share compressive loads with emplaced bone growth material and with new bony growth facilitated by the emplaced material and the load sharing.
    Type: Grant
    Filed: May 6, 1998
    Date of Patent: June 5, 2001
    Assignee: Cortek, Inc.
    Inventors: James E. Nicholson, Scott G. Tromanhauser, Dale E. Whipple
  • Patent number: 6241733
    Abstract: A tome for cutting at least one dovetail in bone is disclosed wherein said tome includes: a shaft having first and second ends, said first end having attached thereto a blade shaped for cutting the dovetail in the bone and the second end having attached thereto an extension for engagement with mechanical energy transmission devices, and a depth stop on the shaft between the blade and the extension.
    Type: Grant
    Filed: September 30, 1999
    Date of Patent: June 5, 2001
    Assignee: Cortek, Inc.
    Inventors: James E. Nicholson, Scott G. Tromanhauser, Dale E. Whipple
  • Patent number: 6096080
    Abstract: A spinal implant replaces excised tissue removed during spine surgery. This implant includes fasteners which firmly attach it to vertebrae adjacent to excised tissue so as to transmit tension and torsional loads to and from those vertebrae. The body of the implant has through cavities into which bone growth material is placed during surgery. The body of the implant also has a finite modulus of elasticity in compression so as to share compressive loads with emplaced bone growth material and with new bony growth facilitated by the emplaced material and the load sharing.
    Type: Grant
    Filed: February 10, 1999
    Date of Patent: August 1, 2000
    Assignee: Cortek, Inc.
    Inventors: James E. Nicholson, Scott G. Tromanhauser, Dale E. Whipple
  • Patent number: 5061234
    Abstract: A magnetic neural stimulator is disclosed for the stimulation of biological tissue. The stimulator includes an inductive stimulation coil, an energy storage capacitor, a firing device and a charging circuit. The energy storage capacitor is charged by the charging circuit to a voltage level which is greater than the voltage level supplied to the charging circuit. The energy storage capacitor is partially discharged into the stimulation coil thereby producing a magnetic pulse. The charging and discharging of the capacitor is continuously performed so as to produce a plurality of high frequency magnetic pulses. The stimulation coil and the energy storage capacitor operate in a resonant manner under a control circuit which performs timing and gating functions.
    Type: Grant
    Filed: September 25, 1989
    Date of Patent: October 29, 1991
    Assignee: Corteks, Inc.
    Inventor: Richard A. Chaney