Patents by Inventor David Brumfield

David Brumfield 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: 20190247098
    Abstract: A facet screw system and method includes an implant assembly having a screw with a removable head, a locking nut, and a collet. An insertion instrument is used to insert the screw, compress the facet joint, locks the implant, and breaks off the head of the screw providing a lower profile implant.
    Type: Application
    Filed: April 26, 2019
    Publication date: August 15, 2019
    Inventors: David Brumfield, Mahmoud Abdelgany, Ahmad Faizan, Faheem Sandhu
  • Patent number: 10314622
    Abstract: A facet screw system and method includes an implant assembly having a screw with a removable head, a locking nut, and a collet. An insertion instrument is used to insert the screw, compress the facet joint, locks the implant, and breaks off the head of the screw providing a lower profile implant.
    Type: Grant
    Filed: June 5, 2017
    Date of Patent: June 11, 2019
    Inventors: David Brumfield, Mahmoud F. Abdelgany, Ahmad Faizan, Faheem Sandhu
  • Patent number: 9770534
    Abstract: The present disclosure relates to an anchor for fixating a tissue graft to bone. The anchor includes a through hole extending an entire length of the anchor and a polymer composition having shape memory qualities. Other anchors and methods for fixating a tissue graft to bone are also disclosed.
    Type: Grant
    Filed: April 16, 2008
    Date of Patent: September 26, 2017
    Assignee: Smith & Nephew, Inc.
    Inventors: Horacio Montes De Oca Balderas, Malcolm Brown, Graeme Howling, Steve Fenwick, Nicholas Cotton, David Brumfield
  • Publication number: 20170265909
    Abstract: A facet screw system and method includes an implant assembly having a screw with a removable head, a locking nut, and a collet. An insertion instrument is used to insert the screw, compress the facet joint, locks the implant, and breaks off the head of the screw providing a lower profile implant.
    Type: Application
    Filed: June 5, 2017
    Publication date: September 21, 2017
    Inventors: David Brumfield, Mahmoud F. Abdelgany, Ahmad Faizan, Faheem Sandhu
  • Patent number: 9668784
    Abstract: A facet screw system and method includes an implant assembly having a screw with a removable head, a locking nut, and a collet. An insertion instrument is used to insert the screw, compress the facet joint, locks the implant, and breaks off the head of the screw providing a lower profile implant.
    Type: Grant
    Filed: October 22, 2012
    Date of Patent: June 6, 2017
    Assignee: Amendia, Inc.
    Inventors: David Brumfield, Mahmoud F. Abdelgany, Ahmad Faizan, Faheem Sandhu
  • Publication number: 20110071577
    Abstract: A bottom-loading multi-axial bone anchor apparatus is disclosed. The apparatus includes a receiver member, a crown member, a bone anchor and a retaining member. The receiver member defines an upper opening and a lower opening, which may form part of the same opening, a channel, and a groove. The crown member and bone anchor are loaded into the lower opening of the receiver member, and the retaining member fits around the bone anchor and into the groove in the receiver member. The bone anchor is capable of multi-axial positioning with respect to the receiver member. An elongated member is placed in the channel of the receiver member, contacting the crown member, and a compression member is applied via the upper opening. The compression member presses down on the elongated member, which presses down on the crown member and locks the bone anchor between the crown member and the retaining member.
    Type: Application
    Filed: November 24, 2010
    Publication date: March 24, 2011
    Applicant: WARSAW ORTHOPEDIC, INC.
    Inventors: B. Thomas Barker, JR., John Stewart Young, Craig Squires, David Brumfield, Chris Johnson, Dennis J. Buchanan
  • Publication number: 20100198270
    Abstract: A bottom-loading multi-axial bone anchor apparatus is disclosed. The apparatus includes a receiver member, a crown member, a bone anchor and a retaining member. The receiver member defines an upper opening and a lower opening, which may form part of the same opening, a channel, and a groove. The crown member and bone anchor are loaded into the lower opening of the receiver member, and the retaining member fits around the bone anchor and into the groove in the receiver member. The bone anchor is capable of multi-axial positioning with respect to the receiver member. An elongated member is placed in the channel of the receiver member, contacting the crown member, and a compression member is applied via the upper opening. The compression member presses down on the elongated member, which presses down on the crown member and locks the bone anchor between the crown member and the retaining member.
    Type: Application
    Filed: April 13, 2010
    Publication date: August 5, 2010
    Applicant: WARSAW ORTHOPEDIC, INC.
    Inventors: B. Thomas Barker, John Stewart Young, Craig Squires, David Brumfield, Chris Johnson, Dennis J. Buchanan
  • Publication number: 20100145448
    Abstract: The present disclosure relates to an anchor for fixating a tissue graft to bone. The anchor includes a through hole extending an entire length of the anchor and a polymer composition having shape memory qualities. Other anchors and methods for fixating a tissue graft to bone are also disclosed.
    Type: Application
    Filed: April 16, 2008
    Publication date: June 10, 2010
    Applicant: Smith & Nephew, Inc.
    Inventors: Horacio Montes De Oca Balderas, Malcolm Brown, Graeme Howling, Steve Fenwick, Nicholas Cotton, David Brumfield
  • Patent number: 7727261
    Abstract: A bottom-loading multi-axial bone anchor apparatus is disclosed. The apparatus includes a receiver member, a crown member, a bone anchor and a retaining member. The receiver member defines an upper opening and a lower opening, which may form part of the same opening, a channel, and a groove. The crown member and bone anchor are loaded into the lower opening of the receiver member, and the retaining member fits around the bone anchor and into the groove in the receiver member. The bone anchor is capable of multi-axial positioning with respect to the receiver member. An elongated member is placed in the channel of the receiver member, contacting the crown member, and a compression member is applied via the upper opening. The compression member presses down on the elongated member, which presses down on the crown member and locks the bone anchor between the crown member and the retaining member.
    Type: Grant
    Filed: December 9, 2003
    Date of Patent: June 1, 2010
    Inventors: B. Thomas Barker, John Stewart Young, Craig Squires, David Brumfield, Chris Johnson, Dennis J. Buchanan
  • Publication number: 20070156142
    Abstract: Connector assemblies are provided to couple an elongate member extending along the spinal column to a bone engaging implant engaged to the spinal column. The connector assembly includes a coupler and a clamping member in the coupler that is movable to secure the implant between the clamping member and the coupler when the elongate member is secured in the coupler with an engaging member engaged to the coupler.
    Type: Application
    Filed: December 30, 2005
    Publication date: July 5, 2007
    Inventors: Alan Rezach, Mathew Morrison, David Brumfield
  • Publication number: 20060229607
    Abstract: A system, kit and method are provided for treatment of the spinal column, including a plurality of elongate support elements configured for placement across multiple levels of the spinal column wherein at least one of the elongate support elements is formed of a first material and at least one other of the elongate support elements is formed of a second material different from the first material, with the first material having a modulus of elasticity that is different from that of the second material. A plurality of fixation elements are provided which are configured to engage a number of the elongate support elements to the spinal column and which are formed of a third material that is bio-compatible with each of the first and second materials.
    Type: Application
    Filed: March 16, 2005
    Publication date: October 12, 2006
    Inventor: David Brumfield
  • Publication number: 20060166534
    Abstract: An instrument is provided for use in orthopedic surgery for reduction of a connecting member such as a spinal rod toward an implant such as a bone screw. An embodiment of the instrument includes handle portions that are pivotable relative to each other and biased apart, and arm portions pivotable relative to each other and to the handle portions. Distal portions of the arm portions, which are offset from the arm portions, provide structure for engaging a connecting member and an implant. Squeezing the handle portions force the distal portions of the arm portions together, forcing together the connecting member and the implant. A toothed bar and pawl may be provided to retain the instrument in a squeezed state.
    Type: Application
    Filed: January 26, 2005
    Publication date: July 27, 2006
    Inventors: David Brumfield, Keith Miller
  • Publication number: 20060166535
    Abstract: An instrument is provided for use in orthopedic surgery for reduction of a connecting member such as a spinal rod toward an implant such as a bone screw. An embodiment of the instrument includes handle portions that are pivotable relative to each other and biased apart, and arm portions pivotable relative to each other and to the handle portions. Distal portions of the arm portions, which may be offset from the arm portions, provide structure for engaging a connecting member and an implant. Squeezing the handle portions force the distal portions of the arm portions together, forcing together the connecting member and the implant. A toothed bar and pawl may be provided to retain the instrument in a squeezed state.
    Type: Application
    Filed: September 27, 2005
    Publication date: July 27, 2006
    Inventors: David Brumfield, Keith Miller
  • Publication number: 20040116929
    Abstract: A bottom-loading multi-axial bone anchor apparatus is disclosed. The apparatus includes a receiver member, a crown member, a bone anchor and a retaining member. The receiver member defines an upper opening and a lower opening, which may form part of the same opening, a channel, and a groove. The crown member and bone anchor are loaded into the lower opening of the receiver member, and the retaining member fits around the bone anchor and into the groove in the receiver member. The bone anchor is capable of multi-axial positioning with respect to the receiver member. An elongated member is placed in the channel of the receiver member, contacting the crown member, and a compression member is applied via the upper opening. The compression member presses down on the elongated member, which presses down on the crown member and locks the bone anchor between the crown member and the retaining member.
    Type: Application
    Filed: December 9, 2003
    Publication date: June 17, 2004
    Inventors: B. Thomas Barker, John Stewart Young, Craig Squires, David Brumfield, Chris Johnson, Dennis J. Buchanan
  • Patent number: 6660004
    Abstract: A bottom-loading multi-axial bone anchor apparatus is disclosed. The apparatus includes a receiver member, a crown member, a bone anchor and a retaining member. The receiver member defines an upper opening and a lower opening, which may form part of the same opening, a channel, and a groove. The crown member and bone anchor are loaded into the lower opening of the receiver member, and the retaining member fits around the bone anchor and into the groove in the receiver member. The bone anchor is capable of multi-axial positioning with respect to the receiver member. An elongated member is placed in the channel of the receiver member, contacting the crown member, and a compression member is applied via the upper opening. The compression member presses down on the elongated member, which presses down on the crown member and locks the bone anchor between the crown member and the retaining member.
    Type: Grant
    Filed: August 28, 2001
    Date of Patent: December 9, 2003
    Assignee: SDGI Holdings, Inc.
    Inventors: B. Thomas Barker, John Stewart Young, Craig Squires, David Brumfield, Chris Johnson, Dennis J. Buchanan
  • Publication number: 20030023241
    Abstract: An improved apparatus is provided to allow for an adjustable length tether for use in the spine and other parts of the body. The tether comprises an artificial strand with an eyelet formed in one end, the other end being looped through the eyelet. The other end is then secured with respect to the eyelet by a crimp, the excess length being cut off after the length of the tether has been given an appropriate tension. Alternatively, the eyelet end may be formed around a grommet. The crimp may be separate from the grommet or a part of the grommet. The mechanism by which the length is adjusted in some cases will take advantage of the shape memory properties of alloys such as nickel-titanium.
    Type: Application
    Filed: August 20, 2002
    Publication date: January 30, 2003
    Inventors: Troy D. Drewry, Michael C. Sherman, David Brumfield
  • Patent number: 6436099
    Abstract: An apparatus is provided to allow for an adjustable length tether for use in the spine and other parts of the body. The tether comprises an artificial strand with an eyelet formed in one end, the other end being looped through the eyelet. The other end is then secured with respect to the eyelet by a crimp, the excess length being cut off after the length of the tether has been given an appropriate tension. Alternatively, the eyelet end may be formed around a grommet. The crimp may be separate from the grommet or a part of the grommet. The mechanism by which the length is adjusted in some cases will take advantage of the shape memory properties of alloys such as nickel-titanium.
    Type: Grant
    Filed: October 20, 1999
    Date of Patent: August 20, 2002
    Assignee: SDGI Holdings, Inc.
    Inventors: Troy D. Drewry, Michael C. Sherman, David Brumfield
  • Publication number: 20020026193
    Abstract: A bottom-loading multi-axial bone anchor apparatus is disclosed. The apparatus includes a receiver member, a crown member, a bone anchor and a retaining member. The receiver member defines an upper opening and a lower opening, which may form part of the same opening, a channel, and a groove. The crown member and bone anchor are loaded into the lower opening of the receiver member, and the retaining member fits around the bone anchor and into the groove in the receiver member. The bone anchor is capable of multi-axial positioning with respect to the receiver member. An elongated member is placed in the channel of the receiver member, contacting the crown member, and a compression member is applied via the upper opening. The compression member presses down on the elongated member, which presses down on the crown member and locks the bone anchor between the crown member and the retaining member.
    Type: Application
    Filed: August 28, 2001
    Publication date: February 28, 2002
    Inventors: B. Thomas Barker, John Stewart Young, Craig Squires, David Brumfield, Chris Johnson, Dennis J. Buchanan
  • Patent number: 6280442
    Abstract: A bottom-loading multi-axial bone anchor apparatus is disclosed. The apparatus includes a receiver member, a crown member, a bone anchor and a retaining member. The receiver member defines an upper opening and a lower opening, which may form part of the same opening, a channel, and a groove. The crown member and bone anchor are loaded into the lower opening of the receiver member, and the retaining member fits around the bone anchor and into the groove in the receiver member. The bone anchor is capable of multi-axial positioning with respect to the receiver member. An elongated member is placed in the channel of the receiver member, contacting the crown member, and a compression member is applied via the upper opening. The compression member presses down on the elongated member, which presses down on the crown member and locks the bone anchor between the crown member and the retaining member.
    Type: Grant
    Filed: September 1, 1999
    Date of Patent: August 28, 2001
    Assignee: SDGI Holdings, Inc.
    Inventors: B. Thomas Barker, John Stewart Young, Craig Squires, David Brumfield, Chris Johnson, Dennis J. Buchanan
  • Patent number: 6023797
    Abstract: A comfort system is provided involving a towel, blanket or cloth that folds into a pillow configuration, and in a fire retardant version is useful as vehicle comfort system. The comfort system involves a length of cloth or fabric that folds into a pillow configuration. An air bladder contained within the pillow supplements the pillow to provide increased comfort. The comfort system provides reduced weight and convenient storage volume consumption for aircraft while providing the flexibility of selectively functioning as a pillow or towel or cover according to the particular needs of the user.
    Type: Grant
    Filed: September 22, 1998
    Date of Patent: February 15, 2000
    Inventor: John David Brumfield