Inter spinous process spacer with compressible core providing dynamic stabilization

摘要

The described devices are useful in the treatment of spinal disorders and pain. In particular, the described devices are designed to stabilize a portion of the spine by restoring and maintaining spacing between two adjacent vertebrae. The devices are compressible spacers that may be situated between the spinous processes of those adjacent vertebrae. The described inter spinous process spacers also allow a range of spinal motion and mimic the motion of a normally functioning spine.

主权项

1. An inter spinous process, dynamic stabilizing device interposable between first and second spinous processes associated with first and second vertebrae, where the second vertebra is adjacent said first vertebra in a human spine, said first and second vertebrae having facet joints and foramenal spaces, said device comprising:
a.) at least one central core assembly, comprising,
i.) first and second end plates,ii.) at least one compressible core member positioned between and adjacent to said first and second end plates, andiii.) at least one fiber extending between and engaged with said first and second end plates, wherein the at least one fiber extends from the first end plate to the second end plate without contacting the first and second spinous processes and back to the first end plate without contacting the first and second spinous processes, b.) bone attachment members, each bone attachment member including a pillar extendable from and attachable to said first and second end plates, respectively, the bone attachment members being attachable to said first and second spinous processes, respectively, wherein the pillars of the bone attachment members are configured, after implantation of this stabilizing device between the first and second spinous processes, to space at least one of the first and second end plates from the first and second spinous processes.