| 摘要 |
A stapler attachment (100) for use with an electromechanical device driver (50) comprises a staple holding member (118) which is spring mounted to a staple closing member (124), which is, in turn, mounted to a threaded driver element (116) concentrically mounted about a threaded shaft (112) such that staple closing member (124) and the staple holding member (118) can be advanced and retracted along a track within a housing (102). A staple (130) is advanced by the rotation of the threaded shaft (112) until the staple holding member (118) is stopped against an opening lip (110) formed in an opening (108) at the distal staple discharging end (104) of the housing (102). At this position, the prongs of the staple (130) have been advanced out of the distal staple discharging end (104) and into the tissue to be joined. The staple closing member (124) continues to advance as the spring (126) between the staple holding member (118) and the staple closing member (124) compresses. This advancement permits the staple closing member (124) to deform the staple (130) into a closed D-shape conformation. The staple (130) is released from the attachment (100) through the distal staple discharging end (104) of the housing (102) upon further advancement of the staple closing member (124). Reverse rotation of the threaded shaft (112) retracts the staple closing member (124) and staple holding member (118) into a staple receiving position where a spring-loaded staple dispenser (148) pushes one of a plurality of staples (146) in a staple cartridge (144) into a staple carrying groove (140) of a staple carrying element of the staple holding member (118), in preparation for a subsequent procedure. |
