US 12,329,429 B2
Systems, methods, and apparatus for spinal deformity correction
John T. Braun, Charlotte, VT (US)
Assigned to Braunvest LLC, Charlotte, VT (US)
Filed by BraunVest LLC., Charlotte, VT (US)
Filed on Oct. 28, 2021, as Appl. No. 17/452,774.
Application 17/452,774 is a continuation in part of application No. 16/601,471, filed on Oct. 14, 2019, granted, now 11,246,636.
Claims priority of provisional application 62/839,397, filed on Apr. 26, 2019.
Prior Publication US 2022/0160411 A1, May 26, 2022
Int. Cl. A61B 17/86 (2006.01); A61B 17/70 (2006.01); A61B 17/56 (2006.01)
CPC A61B 17/8635 (2013.01) [A61B 17/7022 (2013.01); A61B 17/8605 (2013.01); A61B 17/863 (2013.01); A61B 2017/564 (2013.01); A61B 2017/8655 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A system for spinal deformity correction, comprising:
a first bone anchor configured to be engaged with a first vertebral body, wherein the first bone anchor comprises:
an outer thread form formed on an outer surface of the first bone anchor;
an inner chamber; and
at least one of a plurality of bone engaging protrusions formed on an inner surface of the first bone anchor within the inner chamber and a profile that increases in cross-sectional area, at least in part, from a proximal end of the inner chamber to a distal end of the inner chamber;
a second bone anchor configured to be engaged with a second vertebral body, wherein the second bone anchor comprises:
an outer thread form formed on an outer surface of the second bone anchor;
an inner chamber; and
at least one of a plurality of bone engaging protrusions formed on an inner surface of the second bone anchor within the inner chamber and a profile that increases in cross-sectional area, at least in part, from a proximal end of the inner chamber to a distal end of the inner chamber; and
a tether extending between the first bone anchor and the second bone anchor, wherein the tether is configured to apply a corrective force to the first and second vertebral bodies.