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).
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Publication number: 20240148510Abstract: An anti-rotation mechanism for a sacroiliac screw that is designed to prevent screw backout. The sacroiliac screw includes a screw head cap coupled to a screw implant. The anti-rotation mechanism includes geometric features on the screw head cap and/or screw implant that allows rotation in a first direction and prevents rotation in a second or opposite direction. The geometric anti-rotation mechanism for the sacroiliac screw is unique due to the self-contained mechanism within the screw assembly. There are no extra components or process steps required to achieve rotational fixation between the screw body and the screw head cap.Type: ApplicationFiled: October 10, 2023Publication date: May 9, 2024Applicant: Astura Medical Inc.Inventors: Andrew Sprick, Thomas Purcell
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Publication number: 20240138996Abstract: A variable lordosis endplate that may adjusted from 0 to 30 degrees using a mechanical drive that allows the spine's angle to be physically adjusted in-situ. The variable lordosis endplate may be quickly attached to either end, or both ends, of the central column. The variable lordosis endplate can be attached in orientations of every 15 degrees. The variable lordosis endplates' lordotic angles may be on either end of the column independently from one another. By attaching a variable lordosis endplate to both ends of the column, hyper-lordotic angles may be achieved.Type: ApplicationFiled: October 10, 2023Publication date: May 2, 2024Applicant: Astura Medical Inc.Inventors: Ross Dusterhoft, Thomas Purcell
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Publication number: 20240115295Abstract: A modular tulip assembly is disclosed having a U-shaped tulip body configured to receive a collet bushing, the collet bushing having two stage ramped cut outs configured to a engage flexible wires positioned within the tulip body, the first stage holds the collet bushing in an unlocked state for attachment to a screwhead of a implanted shank, the second stage is a locked state to secure or capture the screwhead by squeezing the screwhead with flexible members of the bushing.Type: ApplicationFiled: October 10, 2023Publication date: April 11, 2024Applicant: Astura Medical Inc.Inventors: Keith Klausman, Thomas Purcell
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Publication number: 20240065681Abstract: A tissue retractor having a spring loaded retractor blade that provides constant downward pressure on the spine to eliminate/reduce tissue from creeping underneath the tips of the blades during use, which decreases operation time and reduces patient risk.Type: ApplicationFiled: November 7, 2023Publication date: February 29, 2024Applicant: Astura Medical Inc.Inventors: Keith Klausman, Joel Gambrell, Thomas Purcell
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Publication number: 20240016627Abstract: 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: ApplicationFiled: September 26, 2023Publication date: January 18, 2024Applicant: Astura Medical Inc.Inventors: Fred Murillo, Thomas Purcell
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Publication number: 20240000584Abstract: An expandable interbody spacer that is delivered in the anterior approach with adjustable height and end plate angulation (lordosis). The expandable interbody spacer is configured to have an initial collapsed state having a first height suitable for being inserted into an intervertebral space defined by a pair of adjacent vertebrae, and an expanded state having a second height that is greater than the first height. The expandable interbody spacer may be expanded from the initial collapsed state to the expanded state in-situ. The expanded state increases the distance between the adjacent vertebrae and provides support to the adjacent vertebrae while bone fusion occurs and also provides rigid support between the adjacent vertebrae that withstands compressive forces.Type: ApplicationFiled: September 19, 2023Publication date: January 4, 2024Applicant: Astura Medical Inc.Inventors: Keith Klausman, Thomas Purcell
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Publication number: 20240000487Abstract: A multi-level compressor/distractor instrument that provides both linear and lordotic/kyphotic induced compression and distraction.Type: ApplicationFiled: September 19, 2023Publication date: January 4, 2024Applicant: Astura Medical Inc.Inventors: Keith Klausman, Thomas Purcell, Joel Gambrell
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Publication number: 20240000580Abstract: Disclosed is a spinal interbody spacer that includes a spinal spacer body with an asymmetrical open end, an asymmetrical screw fixation plate configured to couple with the asymmetrical open end, and a locking mechanism configured to lock the screw fixation plate and the spinal spacer body together.Type: ApplicationFiled: June 29, 2023Publication date: January 4, 2024Applicant: Astura Medical Inc.Inventors: Ross Dusterhoft, Thomas Purcell
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Patent number: 11826260Abstract: An expandable interbody spacer for placement between adjacent vertebrae having two or more upper and lower endplates and lateral expansion wedges configured to couple a drive means to expand both a height and a width of the expandable interbody spacer from a collapsed state to an expanded state.Type: GrantFiled: June 15, 2022Date of Patent: November 28, 2023Assignee: ASTURA MEDICAL INCInventors: Anthony Valkoun, Thomas Purcell
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Patent number: 11819248Abstract: A pivotal bone anchor assembly includes a body member with upright arms defining a channel for receiving a fixation rod, an axial bore having a bottom opening, a lower interior surface disposed about the bottom opening, and a downwardly facing recessed surface above the lower interior surface. The assembly also includes a shank comprising a partial spherical head positionable into the axial bore and an anchor portion for attachment to the bone. The assembly further includes a bushing insertable into the axial bore having an outer surface configured to resiliently snap under the downwardly facing surface so as to inhibit the bushing from moving upward in the axial bore, and a lower surface configured for biased engagement with the partial spherical head of the bone anchor, with the biased engagement providing a pre-lock press fitment about the partial spherical head so that the bone anchor and body member do not move freely with respect to each other prior to insert and securement of the fixation rod.Type: GrantFiled: June 7, 2022Date of Patent: November 21, 2023Assignee: Alphatec Spine, Inc.Inventors: Thomas Purcell, Don Hair, Tamas T. Frech
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Patent number: 11806004Abstract: A tissue retractor having a spring loaded retractor blade that provides constant downward pressure on the spine to eliminate/reduce tissue from creeping underneath the tips of the blades during use, which decreases operation time and reduces patient risk.Type: GrantFiled: May 7, 2022Date of Patent: November 7, 2023Assignee: ASTURA MEDICALInventors: Keith Klausman, Joel Gambrell, Thomas Purcell
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Publication number: 20230346432Abstract: A method of assembling a pivotal bone anchor assembly includes positioning a bushing into a body member having an axial bore with a lower interior surface adjacent a bottom opening, a channel for receiving a fixation rod, and hollow spaces formed into sidewalls of the axial bore. The bushing includes a curved upper surface for receiving the fixation rod and outwardly protruding structures that resiliently snap into the hollow spaces to inhibit the bushing from moving upward in the axial bore. The method also includes positioning the head of a bone anchor into the axial bore with the bone anchor extending downward through the bottom opening and with the lower interior surface supporting head of the bone anchor to provide for pivotal movement between the bone anchor and the body member prior to locking the pivotal bone anchor assembly via the fixation rod and a closure.Type: ApplicationFiled: July 11, 2023Publication date: November 2, 2023Inventors: Thomas Purcell, Don Hair, Tamas T. Frech
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Publication number: 20230301690Abstract: The present invention is directed to a reducer remover to uncouple or unlock a reducer from a tulip of a pedicle screw. To remove the reducer from the tulip, a reducer remover is inserted onto the reducer to engage and unlock the locking mechanism of the reducer. The reducer remover features a ram that extends distally and engages actuating members to move the actuating members outward. The outward movement of the actuating members engages the locking mechanism to disengage or unlock the reducer from the tulip. In one embodiment, the outward movement of the actuating members push on the reducer clips in an outward direction to disengage them from the tulip. If needed, the ram continues movement distally until contacting the rod or set screw within the tulip. This distal movement of the ram pushes the reducer off of the tulip, making the reducer easy to remove from the tulip.Type: ApplicationFiled: March 24, 2023Publication date: September 28, 2023Applicant: Astura Medical Inc.Inventors: Ross Dusterhoft, Thomas Purcell
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Publication number: 20230301799Abstract: 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: ApplicationFiled: June 1, 2023Publication date: September 28, 2023Inventors: Morgan Packard Lorio, Thomas Purcell
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Patent number: 11766342Abstract: 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: GrantFiled: September 25, 2020Date of Patent: September 26, 2023Assignee: ASTURA MEDICAL INC.Inventors: Fred Murillo, Thomas Purcell
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Publication number: 20230293310Abstract: A standalone anterior cervical interbody spacer (ACIF) that includes a spacer body and plate rigidly couple via flexible pins.Type: ApplicationFiled: May 2, 2023Publication date: September 21, 2023Applicant: Astura Medical Inc.Inventors: Anthony Valkoun, Thomas Purcell
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Publication number: 20230293311Abstract: Disclosed is a standalone anterior lumbar interbody spacer that includes a lumbar spacer body and lumbar plate with a unique locking system to rigidly couple the spacer body and plate via a spring loaded lock tab.Type: ApplicationFiled: May 23, 2023Publication date: September 21, 2023Applicant: Astura Medical Inc.Inventors: Anthony Valkoun, Thomas Purcell
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Patent number: 11759239Abstract: A multi-level compressor/distractor instrument that provides both linear and lordotic/kyphotic induced compression and distraction.Type: GrantFiled: September 24, 2019Date of Patent: September 19, 2023Assignee: ASTURA MEDICAL INCInventors: Keith Klausman, Thomas Purcell, Joel Gambrell
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Patent number: 11759334Abstract: An expandable interbody spacer that is delivered in the anterior approach with adjustable height and end plate angulation (lordosis). The expandable interbody spacer is configured to have an initial collapsed state having a first height suitable for being inserted into an intervertebral space defined by a pair of adjacent vertebrae, and an expanded state having a second height that is greater than the first height. The expandable interbody spacer may be expanded from the initial collapsed state to the expanded state in-situ. The expanded state increases the distance between the adjacent vertebrae and provides support to the adjacent vertebrae while bone fusion occurs and also provides rigid support between the adjacent vertebrae that withstands compressive forces.Type: GrantFiled: June 3, 2022Date of Patent: September 19, 2023Assignee: ASTURA MEDICAL INC.Inventors: Keith Klausman, Thomas Purcell
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Patent number: 11759246Abstract: 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: GrantFiled: August 8, 2022Date of Patent: September 19, 2023Assignee: ASTURA MEDICAL INCInventors: Keith Klausman, Thomas Purcell, Anthony Valkoun