Patent ID: 9656043
Date: 2017-05-23
CPC Classifications: A61M

Claim:
1. A multilumen catheter assembly, comprising: an elongated flexible tubular member having a proximal end portion and a distal end portion with a distal tip, the elongated flexible tubular member also having at least one septum forming at least one aspiration lumen and at least one infusion lumen extending between the proximal end portion and the distal tip of the distal end portion; a first distal end tube attached to the distal tip of the distal end portion of the elongated flexible tubular member, the first distal end tube having open proximal and distal ends and in fluid communication with said aspiration lumen, the first distal end tube having a first longitudinal length between its proximal and distal ends; a second distal end tube attached to the distal tip of the distal end portion of the elongated flexible tubular member, the second distal end tube having open proximal and distal ends and in fluid communication with said aspiration lumen or said infusion lumen, the second distal end tube having a second longitudinal length between its proximal and distal ends, the second distal end tube having a longitudinal axis; a third distal end tube attached to the distal tip of the distal end portion of the elongated flexible tubular member, the third distal end tube having open proximal and distal ends and in fluid communication with said infusion lumen, the third distal end tube having a third longitudinal length between its proximal and distal ends, the third longitudinal length being greater than the second longitudinal length so that the third distal end tube includes a leading segment extending distally of the distal end of the second distal end tube; wherein the distal ends of said first, second, and third distal end tubes are not attached to each other and the distal ends are thereby capable of independent movement; wherein the second distal end tube is positioned laterally between the first distal end tube and third distal end tube; wherein the third distal end tube has a side hole in the wall of the of the third distal end tube; wherein the outer surfaces of the first, second and third distal end tubes are continuous with the outer surface of the elongated flexible tubular member; and wherein the first longitudinal length is greater than the second longitudinal length; and an obturator passing through the first distal end tube, out of the open distal end of the first distal end tube, into the side hole of the third distal end tube, and out of the open distal end of the third distal end tube, wherein the leading segment of the third distal end tube is held in said assembly in a curved path crossing over the longitudinal axis of the second distal end tube.