US 11,877,775 B1
Multiaxial receivers with tether
Jerald Redmond, Germantown, TN (US); Stan Palmatier, Ramer, TN (US); Caleb Smith, Collierville, TN (US); Larry McBride, Germantown, TN (US); Dimitri Protopsaltis, Memphis, TN (US); and Mike Sherman, Memphis, TN (US)
Assigned to WARSAW ORTHOPEDIC, INC., Warsaw, IN (US)
Filed by Warsaw Orthopedic, Inc., Warsaw, IN (US)
Filed on Nov. 21, 2022, as Appl. No. 18/057,496.
Int. Cl. A61B 17/70 (2006.01)
CPC A61B 17/7032 (2013.01) 18 Claims
OG exemplary drawing
 
1. A multiaxial receiver, comprising:
a body having a U-shaped cavity configured to receive a longitudinal rod therein and a lower cavity configured to couple to a pedicle screw, the body extending in a vertical direction along a longitudinal axis and extending horizontally along a widthwise axis;
a side portion including a first aperture on an upper surface thereof and a second aperture on a bottom surface thereof, the first and second apertures together defining a first passageway configured to permit a tether to pass therethrough in the vertical direction;
a threaded aperture extending through the upper surface and into the first passageway; and
an immobilization assembly including a set screw and a wedge, the set screw being disposed within the threaded aperture, wherein the set screw includes a conical tip configured to directly contact a conically shaped surface of the wedge;
wherein the immobilization assembly is configured to be rotated from an open position in which the tether is permitted to pass through the first passageway to a closed position in which the tether is immobilized within the first passageway, and
wherein in the closed position, the wedge is configured to pin the tether against a bearing surface of the first passageway.