US 12,137,943 B2
Semi-constrained anchoring system
Steven J. Seme, Savage, MN (US); and Thomas J. Gisel, Chaska, MN (US)
Assigned to K2M, Inc., Leesburg, VA (US)
Filed by K2M, Inc., Leesburg, VA (US)
Filed on Oct. 8, 2021, as Appl. No. 17/496,915.
Application 17/496,915 is a continuation of application No. 15/175,514, filed on Jun. 7, 2016, granted, now 11,154,329.
Application 15/175,514 is a continuation of application No. 13/722,690, filed on Dec. 20, 2012, granted, now 9,358,044, issued on Jun. 7, 2016.
Application 13/722,690 is a continuation of application No. 12/411,562, filed on Mar. 26, 2009, granted, now 8,357,183, issued on Jan. 22, 2013.
Prior Publication US 2022/0022919 A1, Jan. 27, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. A61B 17/70 (2006.01)
CPC A61B 17/7001 (2013.01) [A61B 17/70 (2013.01); A61B 17/7008 (2013.01); A61B 17/7014 (2013.01); A61B 17/7035 (2013.01); A61B 17/704 (2013.01); A61B 17/7044 (2013.01); A61B 17/7053 (2013.01); A61B 17/707 (2013.01); A61B 17/7004 (2013.01); A61B 17/7011 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A rod anchor for correcting a spinal deformity comprising:
a mounting portion configured to secure the rod anchor to a first bony element and including a pedestal;
a sleeve having a revolute, convex outer surface and a sleeve passage configured to receive a rod; and
a ring-shaped receptacle portion supported by the pedestal, the ring shaped portion having a revolute concave inner surface defining a receptacle passage, the receptacle passage having a longitudinal axis passing through a center of the passage and configured to capture and substantially complementarily fit the sleeve such that the rod received within the sleeve is pivotable in pitch and yaw about a pivot point at a center of the sleeve passage while being constrained from laterally translating towards the revolute concave inner surface.