Patents by Inventor Jack A. Dant

Jack A. Dant 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).

  • Patent number: 10631898
    Abstract: A spinal stabilization system generally comprises first and second anchor members configured to be secured to first and second vertebrae within a patient's body, a flexible element secured to the first anchor member, and a rigid element secured to the second anchor member. An end portion of the rigid element is coupled to an end portion of the flexible so that the system is able to provide both rigid and dynamic stabilization. The coupling is maintained even if the flexible element relaxes after a period of time within the patient's body.
    Type: Grant
    Filed: January 3, 2018
    Date of Patent: April 28, 2020
    Assignee: Zimmer Spine, Inc.
    Inventors: Emmanuel Zylber, Thomas Egli, Rosemary E. Thompson, Markus Froehlich, Giuseppe Cicerchia, Jack A. Dant, Thomas O. Viker, Kevin R. Ley
  • Publication number: 20180125534
    Abstract: A spinal stabilization system generally comprises first and second anchor members configured to be secured to first and second vertebrae within a patient's body, a flexible element secured to the first anchor member, and a rigid element secured to the second anchor member. An end portion of the rigid element is coupled to an end portion of the flexible so that the system is able to provide both rigid and dynamic stabilization. The coupling is maintained even if the flexible element relaxes after a period of time within the patient's body.
    Type: Application
    Filed: January 3, 2018
    Publication date: May 10, 2018
    Inventors: Emmanuel Zylber, Thomas Egli, Rosemary E. Thompson, Markus Froehlich, Giuseppe Cicerchia, Jack A. Dant, Thomas O. Viker, Kevin R. Ley
  • Patent number: 9888944
    Abstract: A spinal stabilization system generally comprises first and second anchor members configured to be secured to first and second vertebrae within a patient's body, a flexible element secured to the first anchor member, and a rigid element secured to the second anchor member. An end portion of the rigid element is coupled to an end portion of the flexible so that the system is able to provide both rigid and dynamic stabilization. The coupling is maintained even if the flexible element relaxes after a period of time within the patient's body.
    Type: Grant
    Filed: May 6, 2015
    Date of Patent: February 13, 2018
    Assignee: Zimmer Spine, Inc.
    Inventors: Emmanuel Zylber, Thomas Egli, Rosemary Thompson, Markus Froehlich, Giuseppe Cicerchia, Jack A. Dant, Thomas O. Viker, Kevin R. Ley
  • Publication number: 20170281244
    Abstract: A transverse connector for coupling between first and second elongate members of a spinal stabilization system. The transverse connector includes a connector arm, a first coupling assembly proximate a first end of the arm, and a second coupling assembly proximate a second end of the arm. The first and second coupling assemblies are secured to the connector arm through a plurality of mating engagement features, such as dovetail grooves.
    Type: Application
    Filed: June 22, 2017
    Publication date: October 5, 2017
    Inventors: Jack A. Dant, Deborah Lynn Hoch, Eric P. Jerke, Eric J. Lundequam
  • Patent number: 9750512
    Abstract: 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: Grant
    Filed: October 21, 2013
    Date of Patent: September 5, 2017
    Assignee: Zimmer Spine, Inc.
    Inventors: Eric P. Jerke, Peter G. Schulte, David W. Castleman, Andrew Olson, Jack A. Dant, Eric J. Lundequam, Hugh D. Hestad
  • Patent number: 9737341
    Abstract: A transverse connector for coupling between first and second elongate members of a spinal stabilization system. The transverse connector includes a connector arm, a first coupling assembly proximate a first end of the arm, and a second coupling assembly proximate a second end of the arm. The first and second coupling assemblies are secured to the connector arm through a plurality of mating engagement features, such as dovetail grooves.
    Type: Grant
    Filed: November 19, 2015
    Date of Patent: August 22, 2017
    Assignee: Zimmer Spine, Inc.
    Inventors: Jack A Dant, Deborah Lynn Hoch, Eric P Jerke, Eric J Lundequam
  • Publication number: 20170079686
    Abstract: A transverse connector for coupling between first and second vertebral anchors of a spinal stabilization system. The transverse connector includes a first coupling assembly proximate a first end, a second coupling assembly proximate a second end, a first fastener having external threading configured to threadably engage an internal threaded portion of a housing of the first vertebral anchor, and a second fastener having external threading configured to threadably engage an internal threaded portion of a housing of the second vertebral anchor. Each of the first and second fasteners includes a spherical upper surface, such as a spherically concave upper surface. A spherical surface of each of the first and second coupling assemblies mates with the spherical upper surface of the respective fastener to provide multi-axial rotation of the transverse connector relative to the housings to permit a desired orientation of the transverse connector.
    Type: Application
    Filed: December 7, 2016
    Publication date: March 23, 2017
    Inventors: Jack A. Dant, Christopher Bargsten, Peter Schulte, Hugh D. Hestad, Brad Kessler
  • Patent number: 9532810
    Abstract: 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: Grant
    Filed: February 11, 2016
    Date of Patent: January 3, 2017
    Assignee: Zimmer Spine, Inc.
    Inventors: Hugh D Hestad, Jack A Dant, Eric J Lundequam, Eric P Jerke, Deborah Lynn Hoch
  • Publication number: 20160157895
    Abstract: 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: Application
    Filed: February 11, 2016
    Publication date: June 9, 2016
    Inventors: Hugh D. Hestad, Jack A. Dant, Eric J. Lundequam, Eric P. Jerke, Deborah Lynn Hoch
  • Patent number: 9289244
    Abstract: 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: Grant
    Filed: January 27, 2014
    Date of Patent: March 22, 2016
    Assignee: Zimmer Spine, Inc.
    Inventors: Hugh D. Hestad, Jack A. Dant, Eric J. Lundequam, Eric P. Jerke, Deborah L. Hoch
  • Publication number: 20160066962
    Abstract: A transverse connector for coupling between first and second elongate members of a spinal stabilization system. The transverse connector includes a connector arm, a first coupling assembly proximate a first end of the arm, and a second coupling assembly proximate a second end of the arm. The first and second coupling assemblies are secured to the connector arm through a plurality of mating engagement features, such as dovetail grooves.
    Type: Application
    Filed: November 19, 2015
    Publication date: March 10, 2016
    Inventors: Jack A Dant, Deborah Lynn Hoch, Eric P Jerke, Eric J Lundequam
  • Publication number: 20150374414
    Abstract: A transverse connector for coupling between first and second elongate members of a spinal stabilization system. The transverse connector includes a connector arm, a first coupling assembly proximate a first end of the arm, and a second coupling assembly proximate a second end of the arm. The first and second coupling assemblies are secured to the connector arm through a plurality of mating engagement features, such as dovetail grooves.
    Type: Application
    Filed: June 26, 2014
    Publication date: December 31, 2015
    Inventors: Jack A. Dant, Deborah L. Hoch, Eric P. Jerke, Eric J. Lundequam
  • Patent number: 9220541
    Abstract: A transverse connector for coupling between first and second elongate members of a spinal stabilization system. The transverse connector includes a connector arm, a first coupling assembly proximate a first end of the arm, and a second coupling assembly proximate a second end of the arm. The first and second coupling assemblies are secured to the connector arm through a plurality of mating engagement features, such as dovetail grooves.
    Type: Grant
    Filed: June 26, 2014
    Date of Patent: December 29, 2015
    Assignee: Zimmer Spine, Inc.
    Inventors: Jack A. Dant, Deborah L. Hoch, Eric P. Jerke, Eric J. Lundequam
  • Publication number: 20150230827
    Abstract: A spinal stabilization system generally comprises first and second anchor members configured to be secured to first and second vertebrae within a patient's body, a flexible element secured to the first anchor member, and a rigid element secured to the second anchor member. An end portion of the rigid element is coupled to an end portion of the flexible so that the system is able to provide both rigid and dynamic stabilization. The coupling is maintained even if the flexible element relaxes after a period of time within the patient's body.
    Type: Application
    Filed: May 6, 2015
    Publication date: August 20, 2015
    Inventors: Emmanuel Zylber, Thomas Egli, Rosemary Thompson, Markus Froehlich, Giuseppe Cicerchia, Jack A. Dant, Thomas O. Viker, Kevin R. Ley
  • Patent number: 9034018
    Abstract: A spinal stabilization system generally comprises first and second anchor members configured to be secured to first and second vertebrae within a patient's body, a flexible element secured to the first anchor member, and a rigid element secured to the second anchor member. An end portion of the rigid element is coupled to an end portion of the flexible so that the system is able to provide both rigid and dynamic stabilization. The coupling is maintained even if the flexible element relaxes after a period of time within the patient's body.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: May 19, 2015
    Assignee: Zimmer Spine, Inc.
    Inventors: Emmanuel Zylber, Thomas Egli, Rosemary Thompson, Markus Froehlich, Giuseppe Cicerchia, Jack A. Dant, Thomas O. Viker, Kevin R. Ley
  • Publication number: 20150112353
    Abstract: 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: Application
    Filed: October 21, 2013
    Publication date: April 23, 2015
    Applicant: Zimmer Spine, Inc.
    Inventors: Eric P. Jerke, Peter G. Schulte, David W. Castleman, Andrew Olson, Jack A. Dant, Eric J. Lundequam, Hugh D. Hestad
  • Patent number: 8900310
    Abstract: 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: Grant
    Filed: April 5, 2012
    Date of Patent: December 2, 2014
    Assignee: Zimmer Spine, Inc.
    Inventors: Daniel A. Carlson, Hugh D. Hestad, Jack A. Dant, Reginald J. Davis
  • Publication number: 20140142640
    Abstract: 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: Application
    Filed: January 27, 2014
    Publication date: May 22, 2014
    Applicant: ZIMMER SPINE, INC.
    Inventors: HUGH D. HESTAD, JACK A. DANT, ERIC J. LUNDEQUAM, ERIC P. JERKE, DEBORAH L. HOCH
  • Patent number: 8685064
    Abstract: 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: Grant
    Filed: September 14, 2012
    Date of Patent: April 1, 2014
    Assignee: Zimmer Spine, Inc.
    Inventors: Hugh D. Hestad, Jack A. Dant, Eric J. Lundequam, Eric P. Jerke, Deborah L. Hoch
  • Publication number: 20130268076
    Abstract: 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.
    Type: Application
    Filed: April 5, 2012
    Publication date: October 10, 2013
    Applicant: ZIMMER SPINE, INC.
    Inventors: Daniel A. Carlson, Hugh D. Hestad, Jack A. Dant, Reginald J. Davis