US 11,911,289 B2
Externally threaded expandable orthopedic implant
Robert Alton McGuire, Jr., Ridgeland, MS (US); Joseph Matthew Jones, Madison, MS (US); and John Lawrence Walker, Madison, MS (US)
Assigned to Zavation Medical Products, LLC, Flowood, MS (US)
Filed by Zavation Medical Products, LLC, Flowood, MS (US)
Filed on Jun. 7, 2022, as Appl. No. 17/834,491.
Application 17/834,491 is a continuation of application No. 17/496,081, filed on Oct. 7, 2021, granted, now 11,389,303.
Prior Publication US 2023/0115389 A1, Apr. 13, 2023
Int. Cl. A61F 2/44 (2006.01); A61F 2/30 (2006.01); A61B 17/70 (2006.01); A61F 2/46 (2006.01)
CPC A61F 2/4455 (2013.01) [A61B 17/7001 (2013.01); A61F 2/30771 (2013.01); A61F 2/4611 (2013.01); A61F 2002/30266 (2013.01); A61F 2002/30579 (2013.01); A61F 2002/30774 (2013.01); A61F 2002/30886 (2013.01)] 19 Claims
OG exemplary drawing
 
1. An expandable screw for orthopedic insertion and expansion between a collapsed state and an expanded state, comprising:
an upper externally-threaded body segment;
a lower externally-threaded body segment opposite the upper externally-threaded body segment; and
an expansion member extending along a longitudinal axis thereof, connecting the upper externally-threaded body segment to the lower externally-threaded body segment, and configured, during the expansion between the collapsed state and the expanded state, to separate the upper externally-threaded body segment from the lower externally-threaded body segment,
wherein threads of the upper externally-threaded body segment and the lower externally-threaded body segment disposed on outer peripheral sections of the upper externally-threaded body segment and the lower externally-threaded body segment are configured to secure the screw to a bone segment of a patient,
wherein at least one of the upper externally-threaded body segment and the lower externally-threaded body segment has an elongated aperture extending in a longitudinal direction and cutting through multiple turns of the threads, and
wherein the expansion member expands the upper externally-threaded body segment from the lower externally-threaded body segment while the upper externally-threaded body segment and the lower externally-threaded body segment remain in a fixed orientation relative to each other.