#$%^&*AU2016266051A120170629.pdf#####HANDHELD ELECTROMECHANICAL SURGICAL INSTRUMENTS ABSTRACT A surgical instrument (10), comprising a power pack (101) including: a motor (M)； and a drive shaft (304) coupled to and rotatable by the motor (M)； an outer shell housing (110) configured to selectively encase the power pack (101) therein, the outer shell housing (110) including a first drive member supported in a distal portion of the outer shell housing (110), the first drive member being configured to selectively couple to the drive shaft； and an adapter assembly (200) having a proximal end configured to selectively couple to the outer shell housing (110), and a distal end configured to couple to a loading unit (400), the adapter assembly (200) having a second drive member supported in the proximal end, the second drive member being configured to selectively couple to the first drive member such that rotation of the drive shaft (304) actuates the second drive member through the first drive member.1/10 CO-D CD1 Co=
