A surgical stapling device comprises a tiltable anvil assembly. The anvil assembly includes a center rod and a head assembly which is pivotally secured center rod. The head assembly includes a housing, a post, an anvil plate and a backup member. The backup member is movably positioned about the post...http://www.google.fr/patents/US7857187?utm_source=gb-gplus-shareBrevet US7857187 - Surgical stapler with tiltable anvil assembly
