A graft formation and delivery instrument comprising an outer barrel, a piston, and an inner pin. The outer barrel has a center aperture. The piston is seated within the center aperture, has a through bore, and is operable to move within the center aperture. The inner pin is seated within the through...http://www.google.es/patents/US7530982?utm_source=gb-gplus-sharePatente US7530982 - Composite allograft formation instrument
