Circular surgical stapler for forming crossing pattern of staples

A surgical stapling instrument includes an anvil defining a plurality of staple-forming pockets; and a stapling head assembly configured to drive a plurality of staples against the staple forming pockets of the anvil. The stapling head assembly includes a coupling member configured to actuate an anvil relative to the stapling head assembly; a firing assembly configured to drive the plurality of staples against the staple forming pockets of the anvil; and a platform member. The platform member includes a platform surface extending radially between a rounded inner edge and a rounded outer edge, and a plurality of staple openings extending through the platform surface. The plurality of staple openings define at least one cross. 一种外科缝合器械包括：砧座，该砧座限定多个钉成形凹坑；以及缝合头部组件，该缝合头部组件被构造成能够驱动多个钉抵靠砧座的钉成形凹坑。缝合头部组件包括：联接构件，该联接构件被构造成能够相对于缝合头部组件致动砧座；击发组件，该击发组件被构造成能够驱动多个钉抵靠砧座的钉成形凹坑；以及平台构件。平台构件包括平台表面，该平台表面在圆形内边缘与圆形外边缘之间径向延伸，以及多个钉开口，该多个钉开口延伸穿过平台表面。多个钉开口限定至少一个十字形。