A surgical stapling device including a self-righting anvil assembly is disclosed. The anvil assembly includes an anvil center rod and a pivotable anvil head. The surgical stapling device includes an anvil retainer assembly having a locking member in the form of a trocar for moving the anvil head from...http://www.google.com/patents/US20110101065?utm_source=gb-gplus-sharePatent US20110101065 - Adaptor for anvil delivery
