US 11,653,954 B2
Bone anchor
Scott Lish, Oceanside, CA (US)
Assigned to NuVasive, Inc., San Diego, CA (US)
Filed by NuVasive, Inc., San Diego, CA (US)
Filed on Feb. 18, 2020, as Appl. No. 16/793,362.
Application 16/793,362 is a continuation of application No. 16/051,477, filed on Jul. 31, 2018, granted, now 10,603,082.
Application 16/051,477 is a continuation of application No. 15/365,383, filed on Nov. 30, 2016, granted, now 10,034,691, issued on Jul. 31, 2018.
Claims priority of provisional application 62/262,530, filed on Dec. 3, 2015.
Prior Publication US 2020/0179016 A1, Jun. 11, 2020
Int. Cl. A61B 17/70 (2006.01); A61B 17/86 (2006.01)
CPC A61B 17/7035 (2013.01) [A61B 17/7002 (2013.01); A61B 17/7034 (2013.01); A61B 17/7037 (2013.01); A61B 17/8615 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A rod housing of a bone anchor for securing a spinal rod, the rod housing comprising:
a base configured to contain a bone fastener head therewithin, the base comprising a pair of upright arms extending to a proximal end of the rod housing;
a rod channel defined by the pair of upright arms; and
a longitudinal axis extending from a distal opening at the base to a proximal opening at the proximal end of the rod housing, wherein the base includes an internal groove oriented at an angle oblique to the longitudinal axis and wherein a high side of the internal groove is on one of the pair of upright arms and a low side of the internal groove is on the other of the pair of upright arms; and
a capture ring situated within the internal groove, the capture ring configured to maintain a connection between the rod housing and the bone fastener head,
wherein the capture ring is oriented at an oblique angle that is more acute than a maximum angle of the bone fastener head relative to the longitudinal axis.