| 摘要 |
STAPLE DRIVE ASSEMBLY Abstract A staple drive assembly (100) includes an actuation sled (110) and at least 5 one staple pusher (160). The staple drive assembly (100) is adapted to fit within a staple cartridge (40) having a plurality of staples and a corresponding number of retention slots (60). The at least one staple pusher (160) includes at least one pusher plate (166) for releasably engaging a backspan (52) of a staple (50). The staple pusher (160) may include a plurality of pusher plates (166) that may be io laterally and longitudinally spaced apart. An actuation member has at least one angled camming surface for engaging a complimentary angled surface of the at least one staple pusher (160). Camming engagement between the actuation member and the at least one staple pusher (160) causes vertical movement of the at least one staple pusher (160). Lateral and longitudinal offset of the actuation 15 member camming surfaces and the corresponding staple pusher (160) following surfaces improves stability and control of the staple pusher (160) during firing. 1322592-IMLW cmem |
