An access device (310) for percutaneous spinal fusion comprising: an elongate gripping member (312) including a first leg (324), and a second leg (326), the legs each having a portion for engagement with a head (300) of a pedicle fastener, wherein the distal portions of the first and second legs are deflectable away from one another to engage and disengage the head of the pedicle fastener； and an elongate locking member (314) connected to and movable relative to the gripping member between a retracted position and a locked position, the elongate locking member having a first extension (376) aligned along the first leg and a second extension (378) aligned along the second leg, wherein the first and second extensions of the locking member prevent the respective first and second legs of the gripping member from deflecting away from one another when in the locked position.
