A stapler for interconnecting adjacent penetrable bodies such as vertebrae includes a barrel with a staple support and deforming anvil at one end thereof; a plunger slidably mounted in the barrel for pressing the staple against the anvil to deform and drive the staple out of the stapler into the vertebrae;...http://www.google.co.uk/patents/US4496090?utm_source=gb-gplus-sharePatent US4496090 - Surgical stapler
