US 12,201,337 B2
Expandable laminoplasty device
Eric Linder, Columbus, OH (US); and Ryan Heskett, Wellington, FL (US)
Assigned to Curiteva, Inc., Tanner, AL (US)
Filed by Curiteva, Inc., Tanner, AL (US)
Filed on Jan. 12, 2024, as Appl. No. 18/411,381.
Application 18/411,381 is a division of application No. 17/824,110, filed on May 25, 2022, granted, now 11,918,265.
Application 17/824,110 is a division of application No. 17/010,269, filed on Sep. 2, 2020, granted, now 11,376,052, issued on Jul. 5, 2022.
Prior Publication US 2024/0138893 A1, May 2, 2024
Int. Cl. A61B 17/70 (2006.01); A61B 17/80 (2006.01); A61B 17/88 (2006.01); A61B 17/56 (2006.01)
CPC A61B 17/8852 (2013.01) [A61B 17/7059 (2013.01); A61B 17/8004 (2013.01); A61B 2017/564 (2013.01)] 5 Claims
OG exemplary drawing
 
1. An expandable laminoplasty device comprising:
a superior plate;
an inferior plate;
a racked gear post having a plurality of gear teeth, the racked gear post affixed to one of the superior plate or the inferior plate;
a pinion gear, the pinion gear having a plurality of gear teeth configured to engage the gear teeth of the racked gear post, the pinion gear being held in one of the superior plate or inferior plate not affixed to the racked gear post, wherein the superior plate or inferior plate not affixed to the racked gear post has an end with a slot or channel to receive the racked gear post and a side opening to receive and hold the pinion gear;
wherein the rotation of the pinion gear engages the gear teeth of the racked gear post thereby coupling the superior plate to the inferior plate to form the expandable laminoplasty device, rotation of the pinion gear causes relative movement of the superior plate and inferior plate from contracted to expanded positions wherein stopping the rotation of the pinion gear fixes an amount of linear expansion between the superior and inferior plates; and
wherein the assembly includes a second post spaced from the racked gear post, wherein the racked gear post has the gear teeth facing inwardly and the pinion gear is positioned in an central location on one of either the superior plate or inferior plate to expand or contract the assembly.