Patent ID: 6905480

Claim:
A surgical apparatus for delivering fluid to treat a lesion comprising: an elongated member having a distal tip and a plurality of openings formed in a sidewall proximal of the distal tip; a plurality of fluid delivery members movably positioned in the elongated member, each of the fluid delivery members having a lumen and at least two openings proximal of the distal tip communicating with the lumen for delivering fluid to the lesion; and an actuator operatively associated with the fluid delivery members, the actuator actuable to a first position to move the fluid delivery members from a retracted position within the elongated member to a first deployed position extending radially with respect to the elongated member and actuable to a second deployed position to move the fluid delivery members from the first deployed position to a second deployed position extending further radially from the elongated member, and a retention member positioned internal of the apparatus, the fluid delivery members being retained in the first and second deployed positions by the retention member to deliver fluid to respective first and second treatment zones, the retention member interacting with an internal region of the apparatus wherein the retention member comprises a flexible tab, and the internal region includes a plurality of recesses, the flexible tab engageable in one of the plurality of recesses.