The Fin attaches to a standard prosthetic, allowing the amputee to enter and exit the water without changing prosthetics. Todd Goldstein More Quotes by Todd Goldstein More Quotes From Todd Goldstein The bio-ink has all the nutrients and also the gel-like material that the cells need to live, and it also holds them in place. Todd Goldstein health If this [3D printed trachea ring] is the repair for the damage, we can come and put it in place, and it'll be living and taking care of the part that we took out. Todd Goldstein health