| 摘要 |
<p>A hemodialysis catheter (10) comprising a dual lumen tube (11) with a bullet nose (57) bolus (20) at its distal end. A venous port (89) is formed in one side of the bolus (20) adjacent the bullet nose (57) of the bolus (20). An arterial port (37) is formed in the bolus (20) circumferentially displaced 180 degrees around the catheter (10) from the venous port (89). The bolus (20) contains a venous passage (59B) which transitions from a smaller diameter D-shaped cross-section to a larger diameter circular cross-section. The bullet nose (57) is thinner than the tube (11) but is inclined on an angle to the axis of the tube so that a portion of its outer periphery is substantially tangent to a hypothetical cylinder containing the trailing edge of the venous port (89).</p> |
