Surgical instruments and procedures for performing a circular anastomosis of a tubular organ. The surgical instruments may include selectively deployable tissue acquisition members configured to puncture through a portion of the tubular organ and position the portion of the organ adjacent to a fastener face of a staple cartridge supported in the instrument. At least one cutting member may be radially deployed and rotated to sever the positioned portion of organ from a distal portion of the organ. An anvil may be employed to draw another portion of the organ adjacent to the portion of organ positioned adjacent to the fastener face of the staple cartridge. The staples may then be deployed through the adjacent portions of organ and an annular knife may be advanced through the adjacent organ portions to complete the anastomosis.管状臓器の一部分に対する外科的手技を行う間に、管状臓器に隣接した組織及び構造物を保護するためのデバイス。種々の実施形態は、第１の構成において外科用器具を通して展開され、第２の構成に拡張され得る部材を備えてよく、第２の構成にあるとき、保護部材が、実質的に管状臓器の一部分の外周の周りに延びることができるようにする。
