Patent ID: 8708211

Claim:
A powered surgical apparatus for engaging tissue, comprising: a handle assembly having a first motor and proximal and distal portions; a movable portion operatively connected to the distal portion of the handle assembly, the movable portion being movable with respect to the handle assembly; a tool assembly adapted to engage tissue, the tool assembly being operatively coupled to the movable portion; a power source configured to supply electrical power; and a transmission system configured to transfer electrical power between the handle assembly and the movable portion, the transmission system including a first electronic board disposed in the handle assembly and a second electronic board positioned in the movable portion, the second electronic board including a primary control circuit and a secondary control circuit, wherein the transmission system transmits control signals between the first and second electronic boards, the first electronic board controls the first motor in response to a control signal received from the second electronic board, wherein the movable portion is configured and adapted to rotate about a longitudinal axis defined by the powered surgical apparatus.