An apparatus for allowing simultaneous use of at least two surgical instruments through a single incision. The apparatus includes a first part having a proximal end, a distal end, an inner surface and an outer surface. The outer surface engages an incision and holds the incision in an open position. The inner surface defines a passageway through the first part from the proximal to the distal ends. The apparatus also includes a second part attached to the proximal end of the first part for sealing the proximal end of the first part and having at least two ports for receiving a surgical instrument. At least one of the ports includes a ball joint to allow articulation of the port relative to the second part. The ball joint allows the orientation of the port and the surgical instrument within it to be moved easily relative to the apparatus.