Spinal fixation devices and methods of use

摘要

Placement apparatus and methods of use for impanation of spacers within an inter-vertebral disc space. In one embodiment, the load-bearing superstructure of the implant is subdivided and the bone forming material is positioned within an internal space of the placement instrument but external to the load bearing elements themselves. At least a portion of the bone graft material is freely contained within the disc space. A method of using the device is also described. In one embodiment, the placement device is used to place the implantable spacers at opposing ends of the disc space using a directly lateral surgical approach.

主权项

1. An orthopedic device assembly configured to deliver an implantable device into an intervertebral disc space that is positioned between a first and a second vertebral bone, comprising:
an implantable device sized and shaped for implantation into said intervertebral disc space and comprising:
a first member; anda second member, said second member not being integrally formed with said first member; and a non-implantable placement instrument configured to deliver said implantable device to said intervertebral disc space, and comprising a cavity that is at least partially contained therein and configured to contain a bone forming material; wherein, when said implantable device is coupled to said non-implantable placement instrument, said cavity is configured to separate said first and said second member and is bordered on all sides by at least a segment of said placement instrument or segments of said implantable device; and wherein at least one side of said cavity is bordered by said placement instrument alone.