US 12,076,252 B2
Lordotic intervertebral spacer with ratchet locking mechanism and integral expansion mechanism
Murali Kadaba, Austin, TX (US); Damien Shulock, San Francisco, CA (US); B. Thomas Barker, Bartlett, TN (US); Dennis Crandall, Mesa, AZ (US); and Jason Datta, Phoenix, AZ (US)
Assigned to Ingeniumspine, LLC, Phoenix, AZ (US)
Filed by Ingeniumspine, LLC, Phoenix, AZ (US)
Filed on Jul. 18, 2023, as Appl. No. 18/223,497.
Application 18/223,497 is a continuation in part of application No. 18/215,072, filed on Jun. 27, 2023, granted, now 12,011,370.
Claims priority of provisional application 63/390,945, filed on Jul. 20, 2022.
Claims priority of provisional application 63/357,411, filed on Jun. 30, 2022.
Prior Publication US 2024/0225854 A1, Jul. 11, 2024
Int. Cl. A61F 2/44 (2006.01); A61F 2/46 (2006.01); A61F 2/30 (2006.01)
CPC A61F 2/447 (2013.01) [A61F 2002/30481 (2013.01); A61F 2002/30579 (2013.01)] 21 Claims
OG exemplary drawing
 
1. An expandable intervertebral spacer system, the spacer system comprising:
a top plate and a bottom plate forming a cage surrounding a cavity, wherein the cage has a proximal end and a distal end;
one or more locking mechanisms that locks the top plate and the bottom plate apart a desired distance, wherein each locking mechanism comprises:
a stanchion comprising a movable post having saw teeth and a stationary post having saw teeth; and
a spring configured to bias the movable post against the stationary post, such that the movable post and stationary post cooperate to lock the top plate and bottom plate apart the desired distance; and
an expansion mechanism integral with the cage, wherein the expansion mechanism comprises one or more expansion springs and wherein the one or more expansion springs is held in a compressed state with a removable trigger wire.