A surgical retractor system includes a first retractor (21) and a second retractor (31). The first retractor comprises a first working channel (25) for receiving a tool therethrough. The second retractor is capable of being advanced through the first working channel, and its proximal end is positioned in the vicinity of the distal end of the first retractor. The second retractor includes a second working channel (35) for receiving a tool therethrough. The system further comprises a retractor inserter (400) for deploying one or more retractors having moveable blades (41), wherein said retractor inserter comprises means for grasping a retractor； a shaft of sufficient length to place said retractor in a desired position, means for expanding said retractor to retract tissue, and means for releasing the expansion of the retractor so that it can be withdrawn.
