Patents by Inventor Chad E. Derf

Chad E. Derf 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).

  • Femoral orthopaedic surgical instrument and method
    Patent number: 10010329
    Abstract: A method and apparatus for performing an orthopaedic surgical procedure on a femur includes attaching a proximal end of an intramedullary adaptor to an intramedullary orthopaedic surgical instrument, securing a distal end of an intramedullary adaptor to a base cutting block, inserting the intramedullary orthopaedic surgical instrument into a medullary canal using the base cutting block, and positioning the base cutting block on a distal end of the femur.
    Type: Grant
    Filed: November 1, 2016
    Date of Patent: July 3, 2018
    Assignee: DEPUY IRELAND UNLIMITED COMPANY
    Inventors: Benjamin J. Sordelet, Chad E. Derf, Rebecca L. Chaney, Craig S. Tsukayama, Carl F. Livorsi, Phillip G. Withee
  • FEMORAL ORTHOPAEDIC SURGICAL INSTRUMENT AND METHOD
    Publication number: 20170238940
    Abstract: A method and apparatus for performing an orthopaedic surgical procedure on a femur includes attaching a proximal end of an intramedullary adaptor to an intramedullary orthopaedic surgical instrument, securing a distal end of an intramedullary adaptor to a base cutting block, inserting the intramedullary orthopaedic surgical instrument into a medullary canal using the base cutting block, and positioning the base cutting block on a distal end of the femur.
    Type: Application
    Filed: November 1, 2016
    Publication date: August 24, 2017
    Inventors: Benjamin J. Sordelet, Chad E. Derf, Rebecca L. Chaney, Craig S. Tsukayama, Carl F. Livorsi, Phillip G. Withee
  • Method of assembling and positioning a femoral orthopaedic surgical instrument
    Patent number: 9480482
    Abstract: A method for performing an orthopedic surgical procedure on a femur includes attaching a proximal end of an intramedullary adaptor to an intramedullary orthopedic surgical instrument, securing a distal end of an intramedullary adaptor to a base cutting block, inserting the intramedullary orthopedic surgical instrument into a medullary canal using the base cutting block, and positioning the base cutting block on a distal end of the femur.
    Type: Grant
    Filed: September 21, 2015
    Date of Patent: November 1, 2016
    Assignee: DEPUY IRELAND UNLIMITED COMPANY
    Inventors: Benjamin J. Sordelet, Chad E. Derf, Rebecca L. Chaney, Craig S. Tsukayama, Carl F. Livorsi, Phillip G. Withee
  • METHOD OF ASSEMBLING AND POSITIONING A FEMORAL ORTHOPAEDIC SURGICAL INSTRUMENT
    Publication number: 20160008010
    Abstract: A method for performing an orthopaedic surgical procedure on a femur includes attaching a proximal end of an intramedullary adaptor to an intramedullary orthopaedic surgical instrument, securing a distal end of an intramedullary adaptor to a base cutting block, inserting the intramedullary orthopaedic surgical instrument into a medullary canal using the base cutting block, and positioning the base cutting block on a distal end of the femur.
    Type: Application
    Filed: September 21, 2015
    Publication date: January 14, 2016
    Inventors: Benjamin J. Sordelet, Chad E. Derf, Rebecca L. Chaney, Craig S. Tsukayama, Carl F. Livorsi, Phillip G. Withee
  • Method of assembling and positioning a femoral orthopaedic surgical instrument
    Patent number: 9138238
    Abstract: A method for performing an orthopaedic surgical procedure on a femur includes attaching a proximal end of an intramedullary adaptor to an intramedullary orthopaedic surgical instrument, securing a distal end of an intramedullary adaptor to a base cutting block, inserting the intramedullary orthopaedic surgical instrument into a medullary canal using the base cutting block, and positioning the base cutting block on a distal end of the femur.
    Type: Grant
    Filed: May 31, 2012
    Date of Patent: September 22, 2015
    Assignee: DEPUY (IRELAND)
    Inventors: Benjamin J. Sordelet, Chad E. Derf, Rebecca L. Chaney, Craig S. Tsukayama, Carl F. Livorsi, Phillip G. Withee
  • Femoral orthopaedic surgical instruments and method of use of same
    Patent number: 9084612
    Abstract: An orthopaedic surgical instrument assembly includes a base block, an intramedullary orthopaedic surgical instrument configured to be inserted into a medullary canal of a patient's femur, an adaptor, and a modular cutting block. The base cutting block includes a slot, and the adaptor is positioned in the slot. The adaptor includes a mounting bracket engaged with the base plate, and a fastener coupled to the intramedullary orthopaedic surgical instrument. The modular cutting block is configured to be secured to the base block.
    Type: Grant
    Filed: May 31, 2012
    Date of Patent: July 21, 2015
    Assignee: DEPUY (IRELAND)
    Inventors: Ben Sordelet, Chad E. Derf, Rebecca L. Chaney, Craig S. Tsukayama, Carl F. Livorsi, Phillip G. Withee
  • Method of surgically preparing a patient's femur
    Patent number: 9050107
    Abstract: A method of surgically preparing a distal end of a femur for implantation of a femoral prosthetic component includes positioning a base cutting block and an intramedullary adaptor on the distal end of the femur such that a first end of the intramedullary adaptor is received in the medullary canal of the femur and the intramedullary adaptor is secured to the base cutting block, attaching a first modular cutting block to an anterior side of the base cutting block, resecting a first portion of the distal end of the femur using a cutting guide defined in the first modular cutting block, the cutting guide of the first modular cutting block, and resecting a second portion of the distal end of the femur using a base cutting guide defined in the base cutting block.
    Type: Grant
    Filed: May 31, 2012
    Date of Patent: June 9, 2015
    Assignee: DePuy (Ireland)
    Inventors: Benjamin J. Sordelet, Chad E. Derf, Rebecca L. Chaney, Craig S. Tsukayama, Carl F. Livorsi, Phillip G. Withee
  • FEMORAL ORTHOPAEDIC SURGICAL INSTRUMENTS AND METHOD OF USE OF SAME
    Publication number: 20130325016
    Abstract: An orthopaedic surgical instrument assembly includes a base block, an intramedullary orthopaedic surgical instrument configured to be inserted into a medullary canal of a patient's femur, an adaptor, and a modular cutting block. The base cutting block includes a slot, and the adaptor is positioned in the slot. The adaptor includes a mounting bracket engaged with the base plate, and a fastener coupled to the intramedullary orthopaedic surgical instrument. The modular cutting block is configured to be secured to the base block.
    Type: Application
    Filed: May 31, 2012
    Publication date: December 5, 2013
    Inventors: Benjamin J. Sordelet, Chad E. Derf, Rebecca L. Chaney, Craig S. Tsukayama, Carl F. Livorsi, Phillip G. Withee
  • METHOD OF SURGICALLY PREPARING A PATIENT'S FEMUR
    Publication number: 20130325014
    Abstract: A method of surgically preparing a distal end of a femur for implantation of a femoral prosthetic component includes positioning a base cutting block and an intramedullary adaptor on the distal end of the femur such that a first end of the intramedullary adaptor is received in the medullary canal of the femur and the intramedullary adaptor is secured to the base cutting block, attaching a first modular cutting block to an anterior side of the base cutting block, resecting a first portion of the distal end of the femur using a cutting guide defined in the first modular cutting block, the cutting guide of the first modular cutting block, and resecting a second portion of the distal end of the femur using a base cutting guide defined in the base cutting block.
    Type: Application
    Filed: May 31, 2012
    Publication date: December 5, 2013
    Inventors: Benjamin J. Sordelet, Chad E. Derf, Rebecca L. Chaney, Craig S. Tsukayama, Carl F. Livorsi, Phillip G. Withee
  • METHOD OF ASSEMBLING AND POSITIONING A FEMORAL ORTHOPAEDIC SURGICAL INSTRUMENT
    Publication number: 20130325021
    Abstract: A method for performing an orthopaedic surgical procedure on a femur includes attaching a proximal end of an intramedullary adaptor to an intramedullary orthopaedic surgical instrument, securing a distal end of an intramedullary adaptor to a base cutting block, inserting the intramedullary orthopaedic surgical instrument into a medullary canal using the base cutting block, and positioning the base cutting block on a distal end of the femur.
    Type: Application
    Filed: May 31, 2012
    Publication date: December 5, 2013
    Inventors: Benjamin L. Sordelet, Chad E. Derf, Rebecca L. Chaney, Craig S. Tsukayama, Carl F. Livorsi, Phillip G. Withee