06146354 is referenced by 139 patents and cites 24 patents.

A multi-lumen intravenous catheter for use in treating a patient's blood comprising an elongated cylindrical tube with at least first, second and third lumens formed inside. The first lumen is adapted to accept a guide wire for guiding the catheter during insertion into a blood vessel of the patient or therapeutics for introduction into the patient's bloodstream. The second lumen is adapted to return treated blood to the patient's blood vessel and has a smooth, circular or ellipsoidal cross-section. The third lumen is adapted to extract blood from the patient's blood vessel for treatment and has a substantially elliptical or football-shaped cross-section and a cross-sectional area which is 10 to 30 percent larger than a cross-sectional area of the second lumen. Despite such unbalanced cross-sections, the second and third lumens have substantially equal blood flow rates during treatment of the patient's blood. Also, the intake and return flow rates are improved for a given cross-sectional area of the catheter while the hydrostatic pressures within the lumens stay within maximum acceptable hydrostatic pressure limits for the patient.

Title
Asymmetrical multi-lumen apheresis catheter with balanced flow rates
Application Number
8/653447
Publication Number
6146354
Application Date
May 24, 1996
Publication Date
November 14, 2000
Inventor
Craig M Beil
Norristown
PA, US
Agent
Woodcock Washburn Kurtz Mackiewicz & Norris
Assignee
Horizon Medical Products
GA, US
IPC
A61M 1/00
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