Patents by Inventor Hugh D. Hestad
Hugh D. Hestad 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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Publication number: 20160242815Abstract: A vertebral column correction system for correcting a spinal deformity without fusing the joint segments is disclosed. The vertebral column correction system may have first and second vertebral anchors secured to first and second vertebrae. The vertebral column correction system may further comprise one or more intermediate vertebral anchors secured to vertebrae between the first and second vertebrae. A connection member may be disposed within a head portion of the vertebral anchors. At least a portion of the connection member may be a flexible member, such as a flexible cord, configured for tensioning between at least two vertebral anchors for providing a desired amount of tension to apply a correctional force to the spinal column. A spring member, or other tensioning member, may maintain the tension of the connection member.Type: ApplicationFiled: May 2, 2016Publication date: August 25, 2016Inventor: Hugh D. Hestad
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Publication number: 20160157895Abstract: A polyaxial bone anchor including a housing and a bone screw. A bottom surface of the housing includes an aperture that defines an angulation limit of the bone screw for each azimuthal angle around a longitudinal axis of the housing. The aperture is V-shaped, with the V-shape having converging side walls that define a low-angulation direction near their intersection and a high-angulation direction opposite the low-angulation direction. In some cases, the angulation limit of the bone screw is generally constant over a range of azimuthal angles centered around the high-angulation direction. The housing may be modular, including tabs on one component that are plastically deformed to engage a lip on another component. During assembly, a mandrel advances longitudinally along a bore in the housing, and forces the tabs radially outward toward the lip to a radially outward plastically deformed state.Type: ApplicationFiled: February 11, 2016Publication date: June 9, 2016Inventors: Hugh D. Hestad, Jack A. Dant, Eric J. Lundequam, Eric P. Jerke, Deborah Lynn Hoch
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Patent number: 9339299Abstract: A vertebral column correction system for correcting a spinal deformity without fusing the joint segments is disclosed. The vertebral column correction system may have first and second vertebral anchors secured to first and second vertebrae. The vertebral column correction system may further comprise one or more intermediate vertebral anchors secured to vertebrae between the first and second vertebrae. A connection member may be disposed within a head portion of the vertebral anchors. At least a portion of the connection member may be a flexible member, such as a flexible cord, configured for tensioning between at least two vertebral anchors for providing a desired amount of tension to apply a correctional force to the spinal column. A spring member, or other tensioning member, may maintain the tension of the connection member.Type: GrantFiled: September 24, 2014Date of Patent: May 17, 2016Assignee: Zimmer Spine, Inc.Inventor: Hugh D. Hestad
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Patent number: 9289244Abstract: A polyaxial bone anchor including a housing and a bone screw. A bottom surface of the housing includes an aperture that defines an angulation limit of the bone screw for each azimuthal angle around a longitudinal axis of the housing. The aperture is V-shaped, with the V-shape having converging side walls that define a low-angulation direction near their intersection and a high-angulation direction opposite the low-angulation direction. In some cases, the angulation limit of the bone screw is generally constant over a range of azimuthal angles centered around the high-angulation direction. The housing may be modular, including tabs on one component that are plastically deformed to engage a lip on another component. During assembly, a mandrel advances longitudinally along a bore in the housing, and forces the tabs radially outward toward the lip to a radially outward plastically deformed state.Type: GrantFiled: January 27, 2014Date of Patent: March 22, 2016Assignee: Zimmer Spine, Inc.Inventors: Hugh D. Hestad, Jack A. Dant, Eric J. Lundequam, Eric P. Jerke, Deborah L. Hoch
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Publication number: 20160045229Abstract: A polyaxial bone anchor including a housing, a bone screw, and a retainer for pivotably coupling the head of the bone screw to the housing. The retainer is positioned into the bore of the housing and includes a plurality of alternating tabs and slots circumferentially arranged to define a cavity for receiving the head portion of the bone screw therein. The retainer is axially moveable in the housing from a first position in which the head portion is not passable through the lower opening of the retainer to a second position in which the head portion is passable through the lower opening of the retainer.Type: ApplicationFiled: October 27, 2015Publication date: February 18, 2016Inventors: Alan E. Shluzas, Hugh D. Hestad
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Patent number: 9198695Abstract: A polyaxial bone anchor including a housing, a bone screw, and a retainer for pivotably coupling the head of the bone screw to the housing. The retainer is positioned into the bore of the housing and includes a plurality of alternating tabs and slots circumferentially arranged to define a cavity for receiving the head portion of the bone screw therein. The retainer is axially moveable in the housing from a first position in which the head portion is not passable through the lower opening of the retainer to a second position in which the head portion is passable through the lower opening of the retainer.Type: GrantFiled: February 27, 2013Date of Patent: December 1, 2015Assignee: Zimmer Spine, Inc.Inventors: Alan E. Shluzas, Hugh D. Hestad
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Publication number: 20150112353Abstract: An adjustable apparatus for guiding medical instruments used in attaching bone plates. The apparatus has a handle assembly, guide member, a spacer, and an actuation member. The actuation member extends from the handle assembly and actuates the spacer between a position adjacent the guide member and a position spaced from the guide member. The spacer has a through hole that may axially align with a lumen extending through the guide member when in the first position and which is moved out of axial alignment with the lumen in the second position. The spacer may function as a depth stop to control the maximum depth a drill bit can extend from the guide member.Type: ApplicationFiled: October 21, 2013Publication date: April 23, 2015Applicant: Zimmer Spine, Inc.Inventors: Eric P. Jerke, Peter G. Schulte, David W. Castleman, Andrew Olson, Jack A. Dant, Eric J. Lundequam, Hugh D. Hestad
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Publication number: 20150012045Abstract: A vertebral column correction system for correcting a spinal deformity without fusing the joint segments is disclosed. The vertebral column correction system may have first and second vertebral anchors secured to first and second vertebrae. The vertebral column correction system may further comprise one or more intermediate vertebral anchors secured to vertebrae between the first and second vertebrae. A connection member may be disposed within a head portion of the vertebral anchors. At least a portion of the connection member may be a flexible member, such as a flexible cord, configured for tensioning between at least two vertebral anchors for providing a desired amount of tension to apply a correctional force to the spinal column. A spring member, or other tensioning member, may maintain the tension of the connection member.Type: ApplicationFiled: September 24, 2014Publication date: January 8, 2015Inventor: Hugh D. Hestad
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Patent number: 8900310Abstract: An intervertebral or spinal implant having a spacer, a cage, and a locking mechanism, where the locking mechanism may be configured to facilitate a connection between the spacer and the cage. In some cases, the spacer may include a distal end wall, a proximal end wall, a first lateral wall, and a second lateral wall, where the locking mechanism may be situated at the proximal end wall adjacent a receiving opening in the proximal end wall. The implant may have one or more spikes extending from a top and/or a bottom of the spacer to facilitate stabilizing the implant between vertebrae after insertion of the implant in the spinal column.Type: GrantFiled: April 5, 2012Date of Patent: December 2, 2014Assignee: Zimmer Spine, Inc.Inventors: Daniel A. Carlson, Hugh D. Hestad, Jack A. Dant, Reginald J. Davis
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Publication number: 20140330318Abstract: A system for installing a vertebral stabilization system. The system includes an installation tool including a handle portion and a shaft extending distally from the handle portion. The shaft includes a conduit and a staple mechanism. The system also includes a flexible implant member extending along the conduit configured to be advanced out from a distal end of the shaft, and a staple housed in the staple mechanism. The staple is configured to secure the flexible implant member to a vertebra. The handle portion is configured to selectively advance the flexible implant member from the shaft and to selectively actuate the staple mechanism.Type: ApplicationFiled: July 16, 2014Publication date: November 6, 2014Inventor: Hugh D. Hestad
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Patent number: 8876867Abstract: A vertebral column correction system for correcting a spinal deformity without fusing the joint segments is disclosed. The vertebral column correction system may have first and second vertebral anchors secured to first and second vertebrae. The vertebral column correction system may further comprise one or more intermediate vertebral anchors secured to vertebrae between the first and second vertebrae. A connection member may be disposed within a head portion of the vertebral anchors. At least a portion of the connection member may be a flexible member, such as a flexible cord, configured for tensioning between at least two vertebral anchors for providing a desired amount of tension to apply a correctional force to the spinal column. A spring member, or other tensioning member, may maintain the tension of the connection member.Type: GrantFiled: June 24, 2009Date of Patent: November 4, 2014Assignee: Zimmer Spine, Inc.Inventor: Hugh D. Hestad
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Patent number: 8870924Abstract: A spinal fixation assembly for connecting an elongate member along a region of a spinal column with a plurality of fasteners is disclosed. The spinal fixation assembly comprises a threaded fastener having a first threaded end region and a second end region configured to receive an elongate member, such as a rod. A locking member is included for securing the elongate member within the second end region. The second end region and the locking member include elastomeric members that contact the elongate member to allow for a degree of dynamic movement.Type: GrantFiled: September 4, 2008Date of Patent: October 28, 2014Assignee: Zimmer Spine, Inc.Inventor: Hugh D. Hestad
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Patent number: 8821550Abstract: A system for installing a vertebral stabilization system. The system includes an installation tool including a handle portion and a shaft extending distally from the handle portion. The shaft includes a conduit and a staple mechanism. The system also includes a flexible implant member extending along the conduit configured to be advanced out from a distal end of the shaft, and a staple housed in the staple mechanism. The staple is configured to secure the flexible implant member to a vertebra. The handle portion is configured to selectively advance the flexible implant member from the shaft and to selectively actuate the staple mechanism.Type: GrantFiled: April 29, 2013Date of Patent: September 2, 2014Assignee: Zimmer Spine, Inc.Inventor: Hugh D. Hestad
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Patent number: 8740945Abstract: A spinal stabilization system including an insert positionable in the channel of the housing of a poly-axial pedicle screw which allows for locking the housing of the poly-axial pedicle screw from pivotal movement through a clamping force generated by rotational engagement of a fastener with the housing while clamping a cord of a support construct in the housing of the poly-axial pedicle screw through direct contact of the fastener against the cord.Type: GrantFiled: April 7, 2010Date of Patent: June 3, 2014Assignee: Zimmer Spine, Inc.Inventors: Hugh D. Hestad, Daniel A. Carlson, Daniel G. Brown
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Publication number: 20140142640Abstract: A polyaxial bone anchor including a housing and a bone screw. A bottom surface of the housing includes an aperture that defines an angulation limit of the bone screw for each azimuthal angle around a longitudinal axis of the housing. The aperture is V-shaped, with the V-shape having converging side walls that define a low-angulation direction near their intersection and a high-angulation direction opposite the low-angulation direction. In some cases, the angulation limit of the bone screw is generally constant over a range of azimuthal angles centered around the high-angulation direction. The housing may be modular, including tabs on one component that are plastically deformed to engage a lip on another component. During assembly, a mandrel advances longitudinally along a bore in the housing, and forces the tabs radially outward toward the lip to a radially outward plastically deformed state.Type: ApplicationFiled: January 27, 2014Publication date: May 22, 2014Applicant: ZIMMER SPINE, INC.Inventors: HUGH D. HESTAD, JACK A. DANT, ERIC J. LUNDEQUAM, ERIC P. JERKE, DEBORAH L. HOCH
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Patent number: 8685064Abstract: A polyaxial bone anchor including a housing and a bone screw. A bottom surface of the housing includes an aperture that defines an angulation limit of the bone screw for each azimuthal angle around a longitudinal axis of the housing. The aperture is V-shaped, with the V-shape having converging side walls that define a low-angulation direction near their intersection and a high-angulation direction opposite the low-angulation direction. In some cases, the angulation limit of the bone screw is generally constant over a range of azimuthal angles centered around the high-angulation direction. The housing may be modular, including tabs on one component that are plastically deformed to engage a lip on another component. During assembly, a mandrel advances longitudinally along a bore in the housing, and forces the tabs radially outward toward the lip to a radially outward plastically deformed state.Type: GrantFiled: September 14, 2012Date of Patent: April 1, 2014Assignee: Zimmer Spine, Inc.Inventors: Hugh D. Hestad, Jack A. Dant, Eric J. Lundequam, Eric P. Jerke, Deborah L. Hoch
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Patent number: 8672973Abstract: Spinal stabilization devices for addressing back pain originating in the facet joints and the spinous processes of the vertebrae. One embodiment of the present invention includes a substantially T-shaped facet implant for insertion between the facets of two successive vertebrae after a desired amount of the articulating surfaces have been resected. The long and flat portion of the T-shaped facet implant is inserted in between the facets and then the wings of the T-shape, also called fixation tabs, are secured to the spine to secure the facet implant into place. The T-shape implant may also be a part of a spinal stabilization system that includes a facet implant, a spinous process spacer, and a flexible connecting member securing the same.Type: GrantFiled: August 11, 2011Date of Patent: March 18, 2014Assignee: Zimmer Spine Inc.Inventors: Robert Garryl Hudgins, Michael E. Lancial, Hugh D. Hestad
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Patent number: 8641609Abstract: A method of thermally treating tissue during a surgical procedure where a surgical access device, including a body member having walls with at least one conduit therein, is inserted into the patient. A chilled fluid is circulated through the at least one conduit such that the tissue that is located proximate the body member is cooled. Alternatively, the body member may be constructed from a highly thermally conductive material such that heat energy is transmitted through the body from the tissue located proximate the body member and into a heat sink. The surgical device may include a first or second blade portions constructed from an inner and an outer shell having walls. Ribs located on the inner shell sealingly coupled to the inner wall of the outer shell to create the at least one conduit within the walls of the blade portion.Type: GrantFiled: October 23, 2007Date of Patent: February 4, 2014Assignee: Zimmer Spine, Inc.Inventors: Hugh D. Hestad, Robert G. Hudgins, John Dawson, Chris Hrabe, Thomas O. Viker
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Patent number: 8632572Abstract: In one embodiment, a spinal stabilization apparatus includes a vertebral anchor having a head portion and a bone attachment portion. An elongate, flexible guide is removably coupled to the head portion of the vertebral anchor and has a channel extending longitudinally thereof and communicating with a slot in the head portion of the anchor. An elongate cord may be received within the channel to facilitate inserting and securing a spacer between pairs of anchors installed into adjacent vertebrae of a person's spine.Type: GrantFiled: March 15, 2011Date of Patent: January 21, 2014Assignee: Zimmer Spine, Inc.Inventors: Mark W. Darst Rice, Thomas J. Gisel, Hugh D. Hestad, Mark J. Kroll
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Patent number: 8623058Abstract: The present invention relates to spinal support devices and, more specifically, to a flexible member having variable flexibility for use with a dynamic stabilization system or implant to provide dynamic stability to a person's spine. The flexible member generally includes a first material having a first portion including a first material having a first elasticity and a second portion including a second material having a second elasticity greater than the first to provide the flexible member with a variable flexibility.Type: GrantFiled: September 13, 2012Date of Patent: January 7, 2014Assignee: Zimmer Spine, Inc.Inventors: Hugh D. Hestad, Steven L. Griffith