An intestinal steerable endoscopic stapler for stapling tubular tissue is provided comprising a circular anvil member having a circular anvil stapling surface and a cutting block surface radially inwardly of the stapling surface. A head assembly has a circular staple driver for driving staples in an...http://www.google.fr/patents/US5197649?utm_source=gb-gplus-shareBrevet US5197649 - Gastrointestinal endoscoptic stapler
