In-situ formed intervertebral fusion device and method

摘要

An orthopedic device for implanting between adjacent vertebrae comprising: an arcuate balloon and a hardenable material within said balloon. In some embodiments, the balloon has a footprint that substantially corresponds to a perimeter of a vertebral endplate. An inflatable device is inserted through a cannula into an intervertebral space and oriented so that, upon expansion, a natural angle between vertebrae will be at least partially restored. At least one component selected from the group consisting of a load-bearing component and an osteobiologic component is directed into the inflatable device through a fluid communication means.

主权项

1. A spinal fusion implant comprising:
a first elongated ramp component comprising a bearing wall configured to bear against a vertebral endplate and a first angled wall having a longitudinal groove therein; a second elongated ramp component having a length and comprising a second angled wall having a longitudinal ridge extending therefrom; and an elongated element passing through the length of the second elongated ramp component, wherein the first angled wall slidably contacts the second angled wall to provide ramping, wherein the ridge and the groove are adapted to mate so as to guide the ramping of the angled walls, and wherein sliding the first angled wall along the second angled wall in a first direction is effective to progressively increase a height of the spinal fusion implant and sliding the first angled wall along the second angled wall in a second, opposite direction is effective to progressively reduce the height of the spinal fusion implant.