A surgical stapler comprising: a handle assembly including a stationary handle, an approximation mechanism and a firing trigger for firing a plurality of elements (150) of surgical fasteners； and an end effector supported on a distal end of the handle assembly, wherein the end effector comprises: a set (140) anvil, comprising: a central anvil rod having a proximal end configured for selective connection the approximation mechanism and a distal end, wherein the center rod defining a central longitudinal axis； a head (144a) secured to the distal end of the central rod anvil anvil, wherein the anvil head includes a plate (144b) anvil that defines a contact surface with the tissue and a plurality of holes (148) forming staples formed on the surface of tissue contact of the anvil plate in which at least two rows (146) forming annular recesses adjacent the staple are nested with one another； and a set (130) of staple cartridge defines a plurality of slots (138) of fastener retention corresponding to a number of gaps (148) forming the staple of the anvil assembly, wherein the assembly staple cartridge it comprises a plurality of surgical staples supported therein in a separate relationship from each other； and characterized in that each of the plurality of slots (138) of fastener retention and their holes (148) forming staples corresponding has an arcuate length than a rear section curved corresponds to each of the plurality of staples surgical.Una grapadora quirúrgica, que comprende: un conjunto de mango que incluye un mango estacionario, un mecanismo de aproximación y un gatillo de disparo para disparar una pluralidad de elementos (150) de sujeción quirúrgicos； y un efector de extremo soportado en un extremo distal del conjunto de mango, en el que el efector de extremo comprende: un conjunto (140) de yunque, que comprende: una varilla central de yunque que tiene un extremo proximal configurado para la conexión selectiva al mecanismo de aproximación y un extremo distal, e
