Patents by Inventor Thomas Purcell

Thomas Purcell 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: 20210307789
    Abstract: A spinal screw assembly providing an adjustable securement of a fixation rod across at least two vertebrae. The assembly includes a pedicle screw having a spherical head portion, a threaded shaft portion and a tool engagement surface in the head portion for use in driving the screw into a vertebrae. The head portion of the screw is positioned in a body member adjacent a curvilinear surface disposed about an aperture in the end of the body member such that the shaft portion of the screw extends therethrough and the curvilinear inner surface abuts and mates with the head portion of the screw so as to define a ball joint therewith. The body member additionally defines a pair of opposed parallel slots therein adapted to receive a portion of the fixation rod and a locking cap bears against the fixation rod to releasably secure the rod within the assembly.
    Type: Application
    Filed: June 18, 2021
    Publication date: October 7, 2021
    Applicant: Alphatec Spine, Inc.
    Inventors: Thomas Purcell, Don Hair, Tamas T. Frech
  • Publication number: 20210251770
    Abstract: An expandable cage for placement between adjacent vertebrae having two or more upper and lower end plates having compound-angled slots, ramps or rails, and a drive means having corresponding compound-angled slots, ramps or rails configured to slidingly engage the compound-angled slots, ramps or rails of the two or more upper and lower end plates, wherein movement of the drive means in a first direction moves the two or more upper and lower end plates away from each other both vertically and horizontally to expand both a height and a width of the expandable cage from a collapsed state to an expanded state.
    Type: Application
    Filed: April 20, 2021
    Publication date: August 19, 2021
    Applicant: Astura Medical Inc.
    Inventors: Thomas Purcell, Greg Martin
  • Patent number: 11039861
    Abstract: A pivotal bone anchor assembly providing an adjustable securement of a fixation rod across at least two vertebrae. The assembly includes a pedicle screw having a spherical head portion, a threaded shaft portion, and a tool engagement surface in the head portion for use in driving the screw into a vertebra. The head portion of the screw is positioned in a body member adjacent an interior surface disposed about a bottom opening of the body member such that the shaft portion of the screw extends therethrough and the head portion engages the interior surface so as to provide for pivotal motion between the body member and the pedicle screw. The bone anchor also includes a bushing insertable into the body member and having an outwardly projecting structure that snaps under a downward facing abutment surface to maintain the bushing within the body member.
    Type: Grant
    Filed: August 18, 2020
    Date of Patent: June 22, 2021
    Assignee: Alphatec Spine, Inc.
    Inventors: Thomas Purcell, Don Hair, Tamas T. Frech
  • Patent number: 10980644
    Abstract: An expandable cage for placement between adjacent vertebrae having two or more upper and lower end plates having compound-angled slots, ramps or rails, and a drive means having corresponding compound-angled slots, ramps or rails configured to slidingly engage the compound-angled slots, ramps or rails of the two or more upper and lower end plates, wherein movement of the drive means in a first direction moves the two or more upper and lower end plates away from each other both vertically and horizontally to expand both a height and a width of the expandable cage from a collapsed state to an expanded state.
    Type: Grant
    Filed: June 20, 2019
    Date of Patent: April 20, 2021
    Assignee: Astura Medical Inc
    Inventors: Thomas Purcell, Greg Martin
  • Publication number: 20210085370
    Abstract: A compressor/distractor instrument that provides internal set screw engagement for threaded reduction capabilities while also providing bending support of the screw extenders during compression or distractor manipulation. Threaded reduction is performed by engaging compressor/distractor support tubes at the proximal end with a compressor/distractor driver. A removable locking pull pin secures the left and right handles of the compressor/distractor driver together during use, and removal of the pin releases the compression and tension built up in the device for ease of removal.
    Type: Application
    Filed: September 24, 2019
    Publication date: March 25, 2021
    Applicant: Astura Medical Inc.
    Inventors: Keith Klausman, Thomas Purcell, Joel Gambrell
  • Publication number: 20210085488
    Abstract: A fixation member inserter instrument attaches to an interbody spacer and assists in the insertion of the interbody spacer into the intravertebral spacer. The distal end of the fixation member inserter instrument includes a fixation member guide with two or more fixation members that is configured to simultaneously deliver the two or more fixation members during the fixation member impaction process. The interbody spacer is attached to the inserter instrument by a threaded rod adjacent to the main body of the fixation member inserter instrument. There is an impaction rod extending through the device which connects to the two or more fixation members in the fixation member guide. When the impaction rod is impacted on a proximal end, the distal end contacts the two or more fixation members simultaneously and forces them into the vertebral body at the same time.
    Type: Application
    Filed: September 25, 2020
    Publication date: March 25, 2021
    Applicant: Astura Medical Inc.
    Inventors: Fred Murillo, Thomas Purcell
  • Publication number: 20210085476
    Abstract: A standalone anterior cervical interbody spacer (ACIF) that includes a spacer body and plate rigidly couple via flexible pins.
    Type: Application
    Filed: September 24, 2020
    Publication date: March 25, 2021
    Applicant: Astura Medical Inc.
    Inventors: Anthony Valkoun, Thomas Purcell
  • Patent number: 10952868
    Abstract: An intervertebral device comprises a plurality of struts that are rotatably associated with each adjacent strut to form a modifiable inner volume V for bone graft containment.
    Type: Grant
    Filed: August 13, 2018
    Date of Patent: March 23, 2021
    Assignee: EIT Emerging Implant Technologies GmbH
    Inventors: Morgan Packard Lorio, Thomas Purcell
  • Patent number: 10932822
    Abstract: Embodiments of the present invention are directed to an occipital plate for fixating the occipital/cervical junction between cranium and the spine configured to provide multi-axial adjustment for the rod connectors including Anterior/Posterior movement, Medial/Lateral movement and Converging/Diverging movement. Some embodiments of the present invention use a variety of components to achieve a range of motion in several different axes. This extended range of motion allows the plate to adapt to the surrounding anatomy as well as making it more facile to adapt to a posterior rod fixation system.
    Type: Grant
    Filed: October 22, 2018
    Date of Patent: March 2, 2021
    Assignee: Astura Medical Inc
    Inventor: Thomas Purcell
  • Publication number: 20200375631
    Abstract: A spinal screw assembly providing an adjustable securement of a fixation rod across at least two vertebrae. The assembly includes a pedicle screw having a spherical head portion, a threaded shaft portion and a tool engagement surface in the head portion for use in driving the screw into a vertebrae. The head portion of the screw is positioned in a body member adjacent a curvilinear surface disposed about an aperture in the end of the body member such that the shaft portion of the screw extends therethrough and the curvilinear inner surface abuts and mates with the head portion of the screw so as to define a ball joint therewith. The body member additionally defines a pair of opposed parallel slots therein adapted to receive a portion of the fixation rod and a locking cap bears against the fixation rod to releasably secure the rod within the assembly.
    Type: Application
    Filed: August 18, 2020
    Publication date: December 3, 2020
    Applicant: Alphatec Spine, Inc.
    Inventors: Thomas Purcell, Don Hair, Tamas T. Frech
  • Publication number: 20200352734
    Abstract: A derotation reducer linkage with polyaxial locking connector for use with screw reducers/extenders in spinal fusion surgery.
    Type: Application
    Filed: May 7, 2020
    Publication date: November 12, 2020
    Applicant: Astura Medical Inc.
    Inventors: Thomas Purcell, Eric Quaal, Anthony Valkoun
  • Patent number: 10751093
    Abstract: A spinal screw assembly providing an adjustable securement of a fixation rod across at least two vertebrae. The assembly includes a pedicle screw having a spherical head portion, a threaded shaft portion and a tool engagement surface in the head portion for use in driving the screw into a vertebrae. The head portion of the screw is positioned in a body member adjacent a curvilinear surface disposed about an aperture in the end of the body member such that the shaft portion of the screw extends therethrough and the curvilinear inner surface abuts and mates with the head portion of the screw so as to define a ball joint therewith. The body member additionally defines a pair of opposed parallel slots therein adapted to receive a portion of the fixation rod and a locking cap bears against the fixation rod to releasably secure the rod within the assembly.
    Type: Grant
    Filed: June 27, 2019
    Date of Patent: August 25, 2020
    Assignee: Alphatec Spine, Inc.
    Inventors: Thomas Purcell, Don Hair, Tamas T. Frech
  • Publication number: 20200246164
    Abstract: A minimally invasive intervertebral implant includes a circuitous body defining a luminal axis extending longitudinally therethrough. The circuitous body includes proximal and distal ends oppositely disposed along a lateral axis of the circuitous body. Each of the proximal and distal ends includes an aperture disposed therethrough such that the circuitous body includes a first configuration wherein the proximal and distal ends are at a maximum separation and a second configuration wherein the proximal and distal ends are closer together than in the first configuration.
    Type: Application
    Filed: April 7, 2020
    Publication date: August 6, 2020
    Inventors: Morgan Packard Lorio, Thomas Purcell
  • Patent number: 10653536
    Abstract: A minimally invasive intervertebral implant includes a circuitous body defining a luminal axis extending longitudinally therethrough. The circuitous body includes proximal and distal ends oppositely disposed along a lateral axis of the circuitous body. Each of the proximal and distal ends includes an aperture disposed therethrough such that the circuitous body includes a first configuration wherein the proximal and distal ends are at a maximum separation and a second configuration wherein the proximal and distal ends are closer together than in the first configuration.
    Type: Grant
    Filed: February 5, 2018
    Date of Patent: May 19, 2020
    Assignee: EIT Emerging Implant Technologies GmbH
    Inventors: Morgan Packard Lorio, Thomas Purcell
  • Patent number: 10617448
    Abstract: A spinal screw assembly providing an adjustable securement of a fixation rod across at least two vertebrae. The assembly includes a pedicle screw having a spherical head portion, a threaded shaft portion and a tool engagement surface in the head portion for use in driving the screw into a vertebrae. The head portion of the screw is positioned in a body member adjacent a curvilinear surface disposed about an aperture in the end of the body member such that the shaft portion of the screw extends therethrough and the curvilinear inner surface abuts and mates with the head portion of the screw so as to define a ball joint therewith. The body member additionally defines a pair of opposed parallel slots therein adapted to receive a portion of the fixation rod and a locking cap bears against the fixation rod to releasably secure the rod within the assembly.
    Type: Grant
    Filed: June 26, 2019
    Date of Patent: April 14, 2020
    Assignee: Alphatec Spine, Inc.
    Inventors: Thomas Purcell, Don Hair, Tamas T. Frech
  • Publication number: 20200093530
    Abstract: A stylet screw driver assembly having a screw driver/ratcheting handle assembly which houses a stylet, pre-assembled to a set length based on the screw length in use, fixed in place by a spring loaded button mechanism located on the proximal end of the ratcheting handle. The spring loaded button mates with the stylet assembly, providing various stylet protrusion lengths.
    Type: Application
    Filed: September 24, 2019
    Publication date: March 26, 2020
    Applicant: Astura Medical Inc.
    Inventors: Keith Klausman, Thomas Purcell, Anthony Valkoun
  • Publication number: 20200093521
    Abstract: A rod reducer designed to deliver a set screw by way of a decoupled ram and driver shaft. The driver shaft secures and delivers the set screw while the ram applies the load to the rod for reduction. By separating the ram and driver, the rod is reduced down below the start of the female threads, allowing for the set screw to be started by the driver, avoiding binding and additional steps.
    Type: Application
    Filed: September 24, 2019
    Publication date: March 26, 2020
    Applicant: Astura Medical Inc.
    Inventors: Keith Klausman, Thomas Purcell
  • Publication number: 20200093517
    Abstract: A multi-level compressor/distractor instrument that provides both linear and lordotic/kyphotic induced compression and distraction.
    Type: Application
    Filed: September 24, 2019
    Publication date: March 26, 2020
    Applicant: Astura Medical Inc.
    Inventors: Keith Klausman, Thomas Purcell, Joel Gambrell
  • Patent number: 10595905
    Abstract: A spinal screw assembly providing an adjustable securement of a fixation rod across at least two vertebrae. The assembly includes a pedicle screw having a spherical head portion, a threaded shaft portion and a tool engagement surface in the head portion for use in driving the screw into a vertebrae. The head portion of the screw is positioned in a body member adjacent a curvilinear surface disposed about an aperture in the end of the body member such that the shaft portion of the screw extends therethrough and the curvilinear inner surface abuts and mates with the head portion of the screw so as to define a ball joint therewith. The body member additionally defines a pair of opposed parallel slots therein adapted to receive a portion of the fixation rod and a locking cap bears against the fixation rod to releasably secure the rod within the assembly.
    Type: Grant
    Filed: April 17, 2019
    Date of Patent: March 24, 2020
    Assignee: Alphatec Spine, Inc.
    Inventors: Thomas Purcell, Don Hair, Tamas T. Frech
  • Patent number: 10595906
    Abstract: A spinal screw assembly providing an adjustable securement of a fixation rod across at least two vertebrae. The assembly includes a pedicle screw having a spherical head portion, a threaded shaft portion and a tool engagement surface in the head portion for use in driving the screw into a vertebrae. The head portion of the screw is positioned in a body member adjacent a curvilinear surface disposed about an aperture in the end of the body member such that the shaft portion of the screw extends therethrough and the curvilinear inner surface abuts and mates with the head portion of the screw so as to define a ball joint therewith. The body member additionally defines a pair of opposed parallel slots therein adapted to receive a portion of the fixation rod and a locking cap bears against the fixation rod to releasably secure the rod within the assembly.
    Type: Grant
    Filed: June 24, 2019
    Date of Patent: March 24, 2020
    Assignee: Alphatec Spine, Inc.
    Inventors: Thomas Purcell, Don Hair, Tamas T. Frech