Patent ID: 7988658

Claim:
A blood vessel catheter assembly, comprising: a) an assembly of a polyurethane plastic catheter tube component and a polyurethane plastic bolus tip component; b) said catheter tube component containing a first lumen and a second lumen separated by a septum; c) said first lumen extending through said tube to an opening at a distal end of said first lumen and said tube; d) said second lumen extending through said tube to an opening at a distal end of said second lumen which is spaced from said distal end of said first lumen; e) said septum in said catheter tube having an exposed surface between said distal ends of said first and second lumens, and short side walls which bracket said exposed surface and extend separately from each other and substantially perpendicular to said septum; f) said bolus component including a leading nose section and a trailing attachment section; g) said attachment section being molded to said exposed surface of said septum and to each of said side walls; h) said nose section including an enlarged portion disposed in front of said first lumen opening in substantially axial alignment with said first lumen whereby a first port is formed in one side of said catheter between said first lumen opening and said enlarged portion and in communication with said first lumen; i) said attachment section including a ramp surface facing said opening in said distal end of said lumen; j) said ramp surface being inclined at an angle of between 18° and 24° away from said septum whereby a second port is formed in another side of said catheter between said second lumen opening and said ramp surface and in communication with said second lumen.