| 摘要 |
A catheter with a distal end comprising a substantially planar surface and two openings separated by a septum on the substantially planar surface, each corresponding to separate lumens. First and second longitudinal slots are formed in the distal end, opening on the substantially planar surface and communicate with the interiors of corresponding, separate lumens, respectively. Wherein each slot has a length and a width, relative to the dimensions of respective lumens and the rate of blood flow to be passed through the catheter, such that (i) when a given lumen is to be used for a return function, the primary blood flow will exit the opening of that lumen, and (ii) when a given lumen is to be used for a suction function, the primary blood flow will enter the proximal end of the longitudinal slot associated with that lumen, minimizing undesirable recirculation of dialyzed blood. |
