Patent ID: 7776060

Claim:
A combination medical device comprising: a) a circular stapler instrument, comprising a staple cartridge component and corresponding anvil component, and b) a buttress adapted to be a) stably positioned upon the staple cartridge and/or anvil components of the stapler prior to, or at the time of, use, b) while in position upon the stapler component(s), to then be delivered to a tissue site in combination with the stapler components, c) upon delivery of the components and positioned buttress to the tissue site, to provide a first region of buttress material to buttress a seam between tissue sections upon activation of the stapler instrument, and d) to permit the removal of one or more portions of a second region upon activation of a stapler instrument knife provided by the stapler, the second region being generally concentric to the first region and wherein the first region and the second region are formed of dissimilar materials.