SURGICAL CUTTING AND FASTENING INSTRUMENT WITH DISTALLLY MOUNTED PNEUMATICALLY POWERED ROTARY DRIVE MEMBER

摘要

A pneumatically powered surgical cutting and fastening instrument with a distally mounted pneumatically powered rotary drive member is provided to enable a surgeon to lock a distal spine portion in a desired articulated position simply by releasing a selector switch handle. A distal member is adapted to receive a pneumatically operated tool assembly. An elongate shaft assembly(100) has a distal end portion associated with the distal member and a proximal end portion. A pneumatically powered rotary drive member is supported by the distal end portion of the elongate shaft assembly, and is fluidly coupled to a source of pneumatic power. The rotary drive member is adapted to selectively apply at least two rotary actuation motions to the pneumatically operated tool assembly supported by the distal member upon receipt of at least one pneumatic drive signal from the source of pneumatic power.