Patent ID: 6929621

Claim:
A catheter, comprising: an elongate body having distal and proximal ends, the elongate body having at least one lumen therethrough, a distal portion of the elongate body having a perimeter; first and second retention members; a linkage comprising a linkage member operably associated with the first retention member, with the first and second retention members being actuated by the linkage to be selectively disposed in either an insertion state or a retention state, wherein: in the insertion state, the first and second retention members forming a distal body defining a central axis, the central axis being generally spaced apart from the perimeter of the distal portion of the elongate body, the distal body and elongate body insertable along a passageway of a mammal; and in the retention state, the first and second retention members are selectively disposed in a spaced apart configuration to resist proximal movement of the catheter along the passageway of the mammal, with the linkage member being disposed along the first retention member; wherein the distal body bifurcates upon moving from the insertion state to the retention state; and wherein the catheter further comprises a proximal portion having at least one spatial marker indicative of an orientation of the first and second retention members.