System for stabilizing at least a portion of the spine

摘要

Disclosed are embodiments of a dynamic stabilizer system for dynamically stabilizing the sacrum and at least lumbar vertebra L5. The dynamic stabilizer system may comprise two anchoring members that can be implanted at distinct locations in the sacrum, a mechanical fastener element having two ends and a flexible portion that can be securely fastened on the spinous process of a lumbar vertebra, and two distinct rods, each securing onto the anchoring members and the mechanical fastener element. In some embodiments, the dynamic stabilizer system may further comprise one or more spacers, each interposed between two spinous processes. The mechanical fastener element further comprises features for securing the one or more spacers.

主权项

1. A dynamic stabilizer system for dynamically stabilizing the sacrum and at least lumbar vertebra L5, comprising:
a first anchoring member for being implanted at a first location in said sacrum; a second anchoring member for being implanted at a second location in said sacrum, wherein said first location and said second location are distinct locations in said sacrum; a mechanical fastener element comprising a first end and a second end for securely fixing said mechanical fastener element on a spinous process of a lumbar vertebra L5, said mechanical fastener element including at least a first spacer configured to be interposed between said spinous process of said lumbar vertebra L5 and a process S1 of said sacrum; a flexible tie configured to cooperate with said spinous process of said lumbar vertebra L5, said flexible tie comprising two ends secured to said first spacer; a first rod comprising a first end for securing onto said first end of said mechanical fastener element and a second end for securing to said first anchoring member, wherein a point on said first rod at which said second end of said first rod is secured to said first anchoring member is adjustable; and a second rod comprising a first end for securing onto said second end of said mechanical fastener element and a second end for securing to said second anchoring member, wherein a point on said second rod at which said second end of said second rod is secured to said second anchoring member is adjustable, wherein said first rod and said second rod are two distinct rods; wherein said first spacer comprises a first end and a second end, wherein each of said first and second ends of said first spacer comprises a locking member for locking said first end of either said first rod or said second rod; wherein said first spacer comprises two locking elements for locking said two ends of said flexible tie; and wherein each locking member and the corresponding locking element comprise a first orifice for receiving said first end of either said first rod or said second rod, a second orifice opening out into said first orifice for receiving one of said two ends of said flexible tie, and a controllable clamping member acting in a clamped position to secure said one of said two ends of said flexible tie and said first end of either said first rod or said second rod.