A combination medical device comprising a circular stapler instrument and one or more portions of preformed buttress material adapted to be stably positioned upon the staple cartridge and/or anvil components of the stapler prior or at the time of use. Positioned buttress material(s) are delivered to...http://www.google.fr/patents/US7128748?utm_source=gb-gplus-shareBrevet US7128748 - Circular stapler buttress combination
