US 11,752,003 B2
Expandable interbody spacer
Moti Altarac, Irvine, CA (US); and Joey Reglos, Dumaguete (PH)
Filed by Neurostructures, Inc., Irvine, CA (US)
Filed on Apr. 19, 2022, as Appl. No. 17/724,333.
Application 17/724,333 is a continuation of application No. 16/894,308, filed on Jun. 5, 2020, granted, now 11,304,817.
Prior Publication US 2022/0233326 A1, Jul. 28, 2022
Int. Cl. A61F 2/44 (2006.01); A61F 2/46 (2006.01); A61F 2/30 (2006.01)
CPC A61F 2/442 (2013.01) [A61F 2/447 (2013.01); A61F 2/4611 (2013.01); A61F 2002/30593 (2013.01); A61F 2002/30904 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An expandable interbody spacer having a longitudinal axis, a proximal end and a distal end, comprising:
a housing having two sides interconnected by a distal endwall and a proximal endwall defining a hollow interior; the distal endwall having a threaded distal opening and the proximal endwall having a threaded proximal opening;
an upper endplate and a lower endplate each having a posterior end and an anterior end, a bone-engaging surface and an interior surface opposite to the bone-engaging surface; the interior surface of each of the upper and lower endplates having an anterior ramp surface extending at an angle with respect to the interior surface and a posterior ramp surface extending at an angle with respect to the interior surface;
an anterior actuator located between the interior surfaces of the upper endplate and the lower endplate near the distal end of the spacer;
a posterior actuator located between the interior surfaces of the upper endplate and the lower endplate near the proximal end of the spacer;
an anterior drive screw comprising a shank having a threaded outer surface; the shank being threadingly connected to the threaded distal opening; the anterior drive screw having an anterior drive bore extending from a proximal opening along a longitudinal drive axis; and
a posterior drive screw comprising a shank having a threaded outer surface; the shank being threadingly connected to the threaded proximal opening; the posterior drive screw having a posterior drive bore extending along the longitudinal drive axis between a proximal opening and a distal opening.