Patent ID: 8317810

Claim:
A medical device comprising: an elongate tubular member having a lumen extending therethrough in a longitudinal direction, wherein the elongate tubular member comprises a distal portion having a wall; a port opening extending through the wall, the port opening having a distal edge and a proximal edge; and a guiding surface within the lumen of the elongate tubular member, the guiding surface having a distal end, wherein the distal end of the guiding surface extends adjacent to the distal edge of the port opening; and a flexible puncture member insertable through the lumen of the elongate tubular member, the flexible puncture member having a distal portion and a proximal portion, wherein the flexible puncture member deflects upon contacting the guiding surface to exit the elongate tubular member through the port opening, and wherein the distal portion of the flexible puncture member is biased to assume a helix shape, a flower shape or a basket shape upon exiting the elongate tubular member, and wherein the flexible puncture member further comprises a lumen extending therethrough.