Patents by Inventor William L. Dunbar
William L. Dunbar 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).
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Patent number: 9629662Abstract: A spine stabilization system includes at least one bone anchor assembly, the bone anchor assembly including a bone engaging member and a receiver member, wherein the receiver member includes a connecting member cavity, and an elongated connecting member inserted into the connecting member cavity and connected to the receiver member, wherein the connecting member comprises locking features configured to secure the connecting member to the receiver member without the use of a fixation screw extending through a top portion of the receiver member.Type: GrantFiled: March 13, 2013Date of Patent: April 25, 2017Assignee: DePuy Synthes Products, Inc.Inventors: Benjamin Arnold, Seungkyu Daniel Kwak, John Riley Hawkins, Erasmo A. Lopez, Missoum Moumene, Charles M. Bartish, Jr., William L. Dunbar, Jr., Amie Borgstrom, Anwar M. Upal
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Publication number: 20150088207Abstract: A method of using a spine stabilization system in one embodiment includes inserting a bone fastener shank through a receiver structure cavity and then through a distal opening of the receiver member, positioning a head of the fastener against a bearing surface of the receiver structure, positioning a bearing member on an upper portion of the head, positioning a first pivot bearing portion of a pivot member above the positioned bearing member, positioning a pivot portion of a connector assembly on the positioned first pivot bearing portion, positioning a second pivot bearing portion of the pivot member on an upper portion of the pivot portion, and threading a fixation screw into a threaded portion of the receiver structure, thereby (i) causing the pivot member to clamp the pivot portion, and (ii) clamping the head of the screw between the first bearing and the bearing surface.Type: ApplicationFiled: December 8, 2014Publication date: March 26, 2015Inventors: Benjamin Arnold, Charles M. Bartish, JR., Seungkyu Daniel Kwak, William L. Dunbar, JR., John Riley Hawkins, Amie Borgstrom, Erasmo A. Lopez, Anwar M. Upal, Robert David Labron
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Patent number: 8465525Abstract: An interspinous spacer having a memory metal extension.Type: GrantFiled: June 17, 2010Date of Patent: June 18, 2013Assignee: DePuy Synthes Products, LLCInventors: John Riley Hawkins, Amie Borgstrom, William L. Dunbar, Seungkyu Daniel Kwak
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Patent number: 8409256Abstract: A spine stabilization system having a dynamic screw comprises at least one bone anchor assembly comprising a receiver member and a bone engaging member pivotably connected to the receiver member. A bearing is provided in the receiver member that engages a portion of the bone engaging member. An elongated connecting member is connected to the receiver member. A retention member insert is provided within the receiver member between the elongated connecting member and the bearing. The retention member is configured to secure the bearing within the retention member.Type: GrantFiled: December 28, 2006Date of Patent: April 2, 2013Assignee: DePuy Spine, Inc.Inventors: Benjamin Arnold, Charles M. Bartish, Jr., Seungkyu Daniel Kwak, William L. Dunbar, Jr., John Riley Hawkins, Amie Borgstrom, Erasmo A. López, Anwar M. Upal, Missoum Moumene
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Patent number: 7887539Abstract: Spinal rod approximator for seating a stabilizing rod in a rod-receiving portion of a spinal implant and inserting a closure mechanism is provided. In one embodiment, a spinal rod approximator is provided including a body with gripping branches, inserter shaft, threaded collar, and outer sleeve. The cylindrical outer sleeve is disposed about the distal end portion of the body and is movable between a first position and a second position in which the outer sleeve inhibits separation of the gripping branches.Type: GrantFiled: January 20, 2004Date of Patent: February 15, 2011Assignee: Depuy Spine, Inc.Inventors: William L Dunbar, Jr., Christopher Ryan Rybicki, Ian Charles Burgess
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Publication number: 20110034962Abstract: Spinal rod approximator for seating a stabilizing rod in a rod-receiving portion of a spinal implant and inserting closure mechanism is provided. In one embodiment, a spinal rod approximator is provided including a body with gripping branches, inserter shaft, threaded collar, and outer sleeve.Type: ApplicationFiled: October 21, 2010Publication date: February 10, 2011Inventors: William L. Dunbar, JR., Christopher Ryan Rybicki, Ian Charles Burgess
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Publication number: 20110015676Abstract: An interspinous spacer having a memory metal extension.Type: ApplicationFiled: June 17, 2010Publication date: January 20, 2011Inventors: John Riley Hawkins, Amie Borgstrom, William L. Dunbar, Seungkyu Daniel Kwak
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Patent number: 7763073Abstract: An interspinous spacer having a memory metal extension.Type: GrantFiled: March 9, 2004Date of Patent: July 27, 2010Assignee: Depuy Spine, Inc.Inventors: John Riley Hawkins, Amie Borgstrom, William L. Dunbar, Jr., Seungkyu Daniel Kwak
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Publication number: 20080161863Abstract: A spine stabilization system having a dynamic screw comprises at least one bone anchor assembly comprising a receiver member and a bone engaging member pivotably connected to the receiver member. A bearing is provided in the receiver member that engages a portion of the bone engaging member. An elongated connecting member is connected to the receiver member. A retention member insert is provided within the receiver member between the elongated connecting member and the bearing. The retention member is configured to secure the bearing within the retention member.Type: ApplicationFiled: December 28, 2006Publication date: July 3, 2008Applicant: DePuy Spine, Inc.Inventors: Benjamin Arnold, Charles M. Bartish, Seungkyu Daniel Kwak, William L. Dunbar, John Riley Hawkins, Amie Borgstrom, Erasmo A. Lopez, Anwar M. Upal
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Publication number: 20080161853Abstract: A spine stabilization system having a dynamic screw comprises at least one bone anchor assembly comprising a receiver member and a bone engaging member. In one embodiment, the bone engaging member is a screw shank extending from the receiver member. A rod is connected to the receiver member. In one embodiment, the rod comprises a ball-shaped member that engages a bearing surface provided within a cavity of the receiver member. In this embodiment, the rod is pivotably connected to the receiver member. In one such embodiment, a central axis defined by the rod pivots about a pivot point located on the central axis when the rod pivots relative to the receiver member. Accordingly, the pivot point for the rod may be provided within the cavity of the receiver member. The rod may be a fixed length or adjustable to accommodate different segmental units and patients of different sizes.Type: ApplicationFiled: December 28, 2006Publication date: July 3, 2008Applicant: DePuy Spine, Inc.Inventors: Benjamin Arnold, Charles M. Bartish, Seungkyu Daniel Kwak, William L. Dunbar, John Riley Hawkins, Amie Borgstrom, Erasmo A. Lopez, Anwar M. Upal
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Patent number: 7156849Abstract: A rod reduction device is provided having a reduction nut adapted to mate to the rod-receiving portion of a spinal implant, and a driver tool that is effective to engage the reduction nut such that rotation of the driver tool rotates the reduction nut to reduce a rod positioned between the reduction nut and within the rod-receiving head of a spinal implant into the rod-seating portion of the head of the spinal implant. The driver tool can include a support 32 formed on a distal end thereof that is adapted to be disposed within the rod-receiving head of a spinal implant to prevent the rod-receiving head of the implant from collapsing during use of the rod reduction device.Type: GrantFiled: June 16, 2003Date of Patent: January 2, 2007Assignee: DePuy Spine, Inc.Inventors: William L. Dunbar, Chris Rybicki, Ian Burgess, Ron Sacher
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Publication number: 20040254576Abstract: A rod reduction device is provided having a reduction nut adapted to mate to the rod-receiving portion of a spinal implant, and a driver tool that is effective to engage the reduction nut such that rotation of the driver tool rotates the reduction nut to reduce a rod positioned between the reduction nut and within the rod-receiving head of a spinal implant into the rod-seating portion of the head of the spinal implant. The driver tool can include a support 32 formed on a distal end thereof that is adapted to be disposed within the rod-receiving head of a spinal implant to prevent the rod-receiving head of the implant from collapsing during use of the rod reduction device.Type: ApplicationFiled: June 16, 2003Publication date: December 16, 2004Applicant: DEPUY ACROMED, INC.Inventors: William L. Dunbar, Chris Rybicki, Ian Burgess, Ron Sacher
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Publication number: 20040147937Abstract: Spinal rod approximator for seating a stabilizing rod in a rod-receiving portion of a spinal implant and inserting closure mechanism is provided. In one embodiment, a spinal rod approximator is provided including a body with gripping branches, inserter shaft, threaded collar, and outer sleeve.Type: ApplicationFiled: January 20, 2004Publication date: July 29, 2004Applicant: DePuy Spine, Inc.Inventors: William L. Dunbar, Christopher Ryan Rybicki, Ian Charles Burgess