| CPC A61B 17/704 (2013.01) [A61B 17/7002 (2013.01); A61B 17/7008 (2013.01); A61B 17/7032 (2013.01); A61B 17/7037 (2013.01); A61B 17/7053 (2013.01); A61B 17/7005 (2013.01); A61B 17/7022 (2013.01)] | 20 Claims |
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1. A spinal system comprising:
a threaded fastener;
a housing of a vertebral anchor, the housing comprising two upwardly extending arms, each upwardly extending arm comprising an inner threaded surface to engage the threaded fastener;
an insert positionable to extend through a channel formed by the two upwardly extending arms, the insert comprising:
a first bore extending through the insert parallel to an insert longitudinal axis;
a first flange positionable on a first exterior side of the housing of the vertebral anchor, a first interior surface of the first flange including a first channel extending outward from the first bore transverse to the insert longitudinal axis, wherein opposing sidewalls of the first channel are transverse to adjacent portions of the first interior surface along a length of the first channel;
a second flange positionable on a second exterior side of the housing of the vertebral anchor, a second interior surface of the second flange including a second channel extending outward from the first bore transverse to the insert longitudinal axis, the first interior surface being in an opposing relationship with the second interior surface, wherein opposing sidewalls of the second channel are transverse to adjacent portions of the second interior surface along a length of the second channel and to first and second exterior surfaces opposing the first and second interior surfaces, respectively;
a medial portion extending between the first flange and the second flange along the insert longitudinal axis that is transverse to an anchor longitudinal axis when positioned within the channel of the housing, the medial portion including an open superior portion, wherein the opposing sidewalls of each of the first and second channels extend towards a corresponding one of the first and second exterior surfaces of the first and second flanges, respectively; and
a clamping member positionable within the open superior portion of the medial portion, the clamping member including a first tab and a second tab, the first tab configured to engage the first channel by being received within the first channel and the second tab configured to engage the second channel by being received within the second channel, the clamping member including a body portion extending between the first tab and the second tab comprising a lower surface and configured to engage a cord extending through the first bore and an upper surface configured to engage the threaded fastener, wherein the first and second channels retain and guide movement of the first and second tab, respectively, along the length of the first and second channels, respectively, in a radial direction transverse to the insert longitudinal axis and restrict movement of the first and second tab, respectively, in a lateral direction transverse to the radial direction, wherein the first and second channels each intersect the first bore, where each of the first and second channels extends from the first bore to an outer edge of the first flange and second flange, respectively, wherein the medial portion includes a rounded inferior portion configured to conform to the channel of the housing of the vertebral anchor, and wherein advancement of the threaded fastener relative to the inner threaded surfaces of the two upwardly extending arms to engage the upper surface of the clamping member simultaneously immobilizes the clamping member relative to the housing and the cord relative to the clamping member.
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