Snakelike mechanical retainer for operation

The utility model discloses a snakelike mechanical retainer for an operation. The snakelike mechanical retainer comprises a snakelike mechanical arm, the driving mechanism is connected with the snake-shaped mechanical arm; the driving mechanism comprises a driving motor; the lead screw is driven by the driving motor; the lead screw nut is matched with the lead screw; the sliding block is matched with the screw rod nut; the pull rod assembly is fixed to the sliding block and connected with the snakelike mechanical arm. The driving motor drives the lead screw to rotate, the lead screw moves relative to the lead screw nut after rotating, the lead screw nut can drive the sliding block to slide after moving, and therefore the pull rod assembly on the sliding block is driven to move, and the pull rod assembly is controlled to move front and back through forward rotation and reverse rotation of the driving motor. Therefore, the tightening state and the loosening state of the snake-shaped mechanical arm are controlle