Self-contained powered surgical apparatus

摘要

A self-contained powered surgical apparatus (10) for applying surgical fasteners to body tissue comprising: a) an elongate body (120) defining a longitudinal axis; b) a cartridge (228) supported by said elongate body and housing a plurality of surgical fasteners (230) and having a tissue-contacting surface thereon; c) an anvil member (232) having a fastener-forming surface (65) thereon, the anvil member mounted adjacent the cartridge and configured for relative movement between an open position wherein said fastener-forming surface is spaced from said tissue-contacting surface and a closed position wherein said fastener-forming surface is in close cooperative alignment with said tissue-contacting surface; d) a motor assembly (212) housed within the elongate body; e) a power source (214) disposed within the elongate body for energizing the motor assembly; f) an actuation assembly (240) including a longitudinally translating actuation beam (260) driven by the motor assembly and first and second camming mechanisms (284, 250) driven by the actuation beam; and g) wherein movement of the actuation beam in a longitudinal direction initially causes the first camming mechanism (284) to effect relative movement of the anvil member (232) and the cartridge (228) for moving the anvil member towards its closed position and for subsequently translating the second camming mechanism (250) through the cartridge to effect a sequential ejection of a plurality of surgical fasteners (230) from the cartridge (228).