CPC A61B 17/7011 (2013.01) [A61B 17/7002 (2013.01); A61B 17/7004 (2013.01); A61B 17/7014 (2013.01); A61B 17/7016 (2013.01); A61B 17/7017 (2013.01); A61B 2017/00221 (2013.01); A61B 2017/00539 (2013.01)] | 18 Claims |
1. A method of expanding an implanted spinal rod comprising:
introducing hydraulic fluid into a hydraulic pressure chamber of a first rod portion of the spinal rod so that the hydraulic fluid causes a second rod portion to move in a first direction relative to the first rod portion, wherein the second rod portion has an elongate rod section having a longitudinal length with a constant cross-sectional shape, the cross-section being transverse to the longitudinal length; and
moving a locking member along an axis that intersects a longitudinal axis of the second rod portion such that the locking member engages with a tapered surface of the first rod portion to prevent the second rod portion from moving in a second direction opposite the first direction.
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