US 12,433,646 B2
Interspinous spacer with actuator locking arrangements and methods and systems
Zdzislaw Bernard Malinowski, Castaic, CA (US)
Assigned to Boston Scientific Neuromodulation Corporation, Valencia, CA (US)
Filed by Boston Scientific Neuromodulation Corporation, Valencia, CA (US)
Filed on Feb. 5, 2024, as Appl. No. 18/432,562.
Claims priority of provisional application 63/447,147, filed on Feb. 21, 2023.
Prior Publication US 2024/0277384 A1, Aug. 22, 2024
Int. Cl. A61B 17/70 (2006.01); A61B 17/00 (2006.01)
CPC A61B 17/7047 (2013.01) [A61B 17/7065 (2013.01); A61B 2017/00367 (2013.01)] 19 Claims
OG exemplary drawing
 
16. An interspinous spacer, comprising:
a body having a distal portion, a proximal portion, a proximal surface, and a channel extending longitudinally from the proximal surface toward the distal portion;
an actuator screw comprising a threaded shaft and a disc coupled to the threaded shaft, wherein the channel of the body comprises threading complementary to the threaded shaft and the actuator screw is at least partially disposed in, and engages, the channel of the body;
a wedge coupled to the actuator screw, wherein, as the actuator screw is rotated, the actuator screw and the wedge move longitudinally relative to the body;
a locking ring comprising a compressible material and configured for engagement with the actuator screw to resist rotation of the actuator screw, wherein the body comprises a plurality of fingers extending above the proximal surface to retain the locking ring on the proximal surface of the body; and
a first arm and a second arm, wherein the first and second arms are rotatably coupled to the distal portion of the body and configured for rotating in response to longitudinal movement of the wedge, wherein the actuator screw, wedge, first arm, and second arm are configured, upon rotation of the actuator screw in a first direction, to rotate the first and second arms from an implantation position, in which the first and second arms extend longitudinally from the distal portion of the body, to a deployed position, in which the first and second arms are rotated from the implantation position.