US 12,213,703 B2
Three dimensional distractors
Emma Phillips, West Chester, PA (US); and John Noon, Swarthmore, PA (US)
Assigned to DEPUY SYNTHES PRODUCTS, INC., Raynham, MA (US)
Filed by DEPUY SYNTHES PRODUCTS, INC., Raynham, MA (US)
Filed on Feb. 23, 2022, as Appl. No. 17/678,727.
Prior Publication US 2023/0263556 A1, Aug. 24, 2023
Int. Cl. A61B 17/64 (2006.01); A61B 17/66 (2006.01); A61B 17/68 (2006.01); A61B 17/80 (2006.01); A61B 90/00 (2016.01); B33Y 80/00 (2015.01); A61B 17/00 (2006.01)
CPC A61B 17/64 (2013.01) [A61B 17/66 (2013.01); A61B 17/8019 (2013.01); A61B 90/03 (2016.02); B33Y 80/00 (2014.12); A61B 2017/00526 (2013.01); A61B 2017/681 (2013.01); A61B 2090/035 (2016.02)] 21 Claims
OG exemplary drawing
 
1. A helical distractor, comprising:
a distractor body having an open tubular shape including:
a fixed footplate attached to a first end of the distractor body;
first and second body edges;
first and second key grooves in the first and second body edges, respectively; and
an end cap at a second end of the distractor body;
a movable foot including:
body threads;
a first key configured to engage the first key groove;
a second key configured to engage the second key groove; and
a movable footplate;
an advancement screw with a threaded portion inside the distraction body, wherein the threaded portion is configured to engage the body threads of the movable foot,
wherein the movable foot moves along the distractor body when the advancement screw is rotated, and
wherein the distractor body is configured to cause the movable foot to rotate as it moves along the distractor body.