Dynamic stabilization members with elastic and inelastic sections

摘要

An improved dynamic longitudinal connecting member includes a rod portion joined with a tensioned cord portion, for use in a medical implant assembly having at least two bone attachment structures, a spacer covering the join of the rod and cord portions and extending between the at least two bone attachment structures, a sleeve, a bumper and a cord blocker. The spacer and bumper are compressed. The cord portion is slidable with respect to at least one of the bone attachment members.

主权项

1. In a medical implant assembly having at least two bone attachment structures cooperating with a dynamic longitudinal connecting member, the improvement wherein the connecting member comprises:
a) a first end, a transition portion and a second end; b) a rod portion extending longitudinally from the first end to the transition portion, and including a longitudinal axis and a substantially rigid core running substantially parallel with the longitudinal axis; c) a tensionable cord portion joined with the rod portion and extending from the transition portion to the second end; and d) a substantially flexible jacket portion covering the rod and cord portions.