In a short period of time, 3D bioprinting has been applied in studies using bones, blood vessels, composite tissues, vascular grafts, tracheal splints, cartilaginous structures, heart tissue (e.g., two - valve heart), and vaginal organs (1).
Hollister and Green used provisions for emergency clearance from the Food and Drug Administration to create and implant a tracheal splint for Garrett made from a biopolymer called polycaprolactone.