Bone graft delivery to the intervertebral disk space is a critical step in achieving a spinal fusion. The manuscript describes a novel tool for efficiently transporting bone graft with a novel tool. Kleiner Device Labs recently published a manuscript on the subject. Read an excerpt and if you'd like to read the whole article, the link is included below as well.
"A variety of instrumentation techniques are available to assist with lumbar interbody stabilization. These include different approaches for placing fusion cages (oblique, lateral, anterior, or posterior), using stackable cages, expandable cages, and the application of cage coatings. Although this is a limited inventory, these available inventive strategies do not assist the surgeon with the most vexing problem of interbody fusion: delivery of bone graft (BG) or BG extenders (collectively, BG) to the interbody space.
The chief issue related to the intradiskal transport of most BGs is a mechanical problem. This is due to the consistency of BG material – it is a “compressible fluid” and the pressure applied to it by the plunger of a conventional, end-dispensing bone graft delivery tool (BGDT) preferentially drives out the liquid part of the mixture, leaving a condensed plug of the graft material trapped within the cylindrical tool. Removing, clearing, and reinserting the cannula can traumatize the neighboring nerve tissue...."
You can read the rest of the manuscript here.