Patent ID: 7344518

Claim:
A surgical apparatus for delivering fluid to treat a lesion comprising: a housing; an elongated member extending from the housing and having a distal tip and a plurality of openings formed in a sidewall proximal of the distal tip, the openings having a first angular spacing with respect to a longitudinal axis of the elongated member; a plurality of hollow fluid delivery members movably positioned in the elongated member, each of the fluid delivery members having a penetrating tip, a lumen and at least one opening communicating with the lumen for delivering fluid to the lesion, the fluid delivery members having a second angular spacing different from the first angular spacing and extendable through the openings in the sidewall of the elongated member; a first tube retaining the fluid delivery members at a proximal end thereof and communicating with the fluid delivery members; a first retention member retaining the first tube, the retention member being rotated during assembly and fixed in the rotated position; a second retention member positioned in the housing, the second retention member retaining the elongated member in the housing; and an actuator operatively associated with the fluid delivery members, the actuator actuable to a first position to move the plurality of 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 position to move the plurality of fluid delivery members from the first deployed position to a second deployed position extending further radially with respect to the elongated member; wherein the first retention member comprises a first plate having an opening therethrough to receive the first tube and the second retention member comprises a second plate having an opening therethrough to receive the elongated member.