surgical stapler (10) having a retention system supporting material comprising: - a handle (12) - an elongated element (14) extending distally from the handle (12) - a set of jaws (16) including a first jaw and a second jaw including at least one of the first and second jaws a staple cartridge (22) and defining a bag clip (92, 94) to retain the Staples and - a material support (24, 26) having a central portion (80, 120) and a peripheral portion (82, 118) including a line circumferential perforation (78, 116) detachably connected the central part (80, 120) with the peripheral portion (82, 118), the peripheral portion (82, 118) to a position facing the fabric of at least one of the first and second jaws surface being fixed, the central portion (80 , 120) separable from the peripheral portion (82, 118) having fired the staples and further comprising a retaining support (28, 30) having an open central portion (52) and which is fixed at least one of between the first and second jaws, the peripheral portion (82, 118) of the material being support (24, 26) firmly gripped by the retaining support (28, 30) to said surface.Grapadora quirúrgica (10) que presenta un sistema de retención del material de apoyo que comprende: - un mango (12) - un elemento alargado (14) que se extiende distalmente desde el mango (12) - un conjunto de mordazas (16) que incluye una primera mordaza y una segunda mordaza, incluyendo por lo menos una de entre la primera y segunda mordazas un cartucho de grapas (22) y definiendo unas bolsas de grapas (92, 94) para retener las grapas y - un material de apoyo (24, 26) que presenta una parte central (80, 120) y una parte periférica (82, 118) que incluye una línea de perforación circunferencial (78, 116) que conecta de manera separable la parte central (80, 120) con la parte periférica (82, 118), estando fijada la parte periférica (82, 118) a una superficie enfrentada al tejido de por lo menos una de entre la primera y segunda mordazas, siendo la parte centr
