A stapling device comprising； a tool assembly (300) including an anvil assembly (310), a retainer assembly (180), and a shell assembly (312), the anvil assembly having a center rod (316) and an anvil head (314), the anvil head (314) having a distally facing surface (324) and defining a tissue contact surface (315) and including an annular array of staple deforming pockets (319) positioned about the tissue contacting surface (315), the shell assembly (312) including a staple cartridge (320) defining a tissue contact surface (321a) having an annular array of staple pockets, the tool assembly (300) being movable from a spaced to an approximated position； and a stomal sleeve (318) having a tubular configuration, the stomal sleeve (318) having a first end portion (321) secured to the first tissue contacting surface (315) of the anvil head (314) radially inwardly of the annular array of staple deforming pockets (319) and a second end portion (322) secured to the distally facing surface (324) of the anvil head (314).
