A surgical tool or applier for deploying an anastomotic ring that comprises a handle connected to an elongate shaft that terminates in an anastomotic ring deployment mechanism, which is moveable from an unactuated position to an actuated position. In order to prevent tissue from becoming trapped in the ring deployment mechanism during insertion or extraction of the tool, a sheath is adapted to cover ring deployment mechanism during insertion and extraction. The sheath is moveable with the ring deployment mechanism from the unactuated position to the actuated position. The sheath may comprise an elastomeric material, a braided thread, or another material.一種用於展開一吻合環之外科手術工具或施用器包含一把手,該把手連接到一終止於一吻合環展開機構的長桿,該吻合環展開機構可從一未啟用位置移到一已啟用位置。為了防止身體組織在該工具插入或抽出期間被困在該環展開機構內,一鞘適於在插入及抽出期間覆蓋該環展開機構。該鞘可隨該環展開機構從該未啟用位置移到該已啟用位置。該鞘可包含一彈性體材料、一編結線、或另一材料。18...長桿24...展開機構30...末梢32...近側鞘34...遠側鞘36...近側指狀件38...遠側指狀件40...模造致動構件42...推/拉纜索43...外管44A...內管44B...內管45...中間管46...中央部分
