#$%^&*AU2017200793A120170824.pdf#####ADAPTER, EXTENSION, AND CONNECTOR ASSEMBLIES FOR SURGICAL DEVICES ABSTRACT An adapter assembly (100) for operably connecting an end effector (30) to a surgical instrument (100), the adapter assembly (100) comprising a first proximal shaft (116) including a first gear assembly； a second proximal shaft (118) defining a longitudinal axis and including a second gear assembly； a first distal shaft (136) disposed along the longitudinal axis and including a third gear assembly, the first gear assembly being mechanically engaged with the third gear assembly such that rotation of the first gear assembly causes rotation of the third gear assembly； and a second distal shaft (138) including a fourth gear assembly, the second gear assembly being mechanically engaged with the fourth gear assembly such that rotation of the second gear assembly causes rotation of the fourth gear assembly, a distal portion of the second distal shaft is disposed at least partially within an internal cavity of the third gear assembly.5/34 CN CN % C 2N
