PNEUMATICALLY POWERED SURGICAL CUTTING AND FASTENING INSTRUMENT WITH ACTUATOR AT DISTAL END

摘要

A pneumatically powered surgical cutting and fastening instrument with an actuator at a distal end 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 support 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 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 drive member selectively applies at least two linear 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.