Discrete adjunct attachment feature for surgical stapler

An appendage configured for use with an end effector of a surgical stapler, the appendage comprising: a tissue-acting portion comprising a first material; and at least one movable attachment feature coupled to the tissue acting portion and comprising a second material different from the first material. The at least one movable attachment feature is configured to releasably attach the tissue-acting portion to a stapling surface of the end effector. The tissue acting portion is configured to contact tissue gripped by the end effector during closing of the end effector. The tissue-acting portion is further configured to be pierced and captured by a staple ejected from the end effector into the gripped tissue and thereby enhance engagement between the ejected staple and the gripped tissue. 一种附属物，该附属物被构造成用于与外科缝合器的端部执行器一起使用，该附属物包括：组织作用部分，该组织作用部分包含第一材料；和至少一个可移动附接特征部，该至少一个可移动附接特征部联接到该组织作用部分并且包含不同于该第一材料的第二材料。该至少一个可移动附接特征部被构造成能够将该组织作用部分以可释放的方式附接到该端部执行器的缝合表面。该组织作用部分被构造成能够在该端部执行器的闭合期间接触由该端部执行器夹持的组织。该组织作用部分被进一步构造成能够被从该端部执