| 摘要 |
There is provided a catheter assembly (1) wherein at least one of the arterial lumen (2) and the venous lumen (3) are radially displaceable in the transverse plane relative to the longitudinal axis of the catheter body between an insertion position and a drawing position. The maximum radial displacement in the transverse plane, between the radially displaceable arterial and/or venous lumen and the longitudinal axis of the catheter body is greater in the drawing position than in the insertion position. There is also provided a method of inserting and removing the catheter assembly into or from a blood vessel, and a method of treating blood using the catheter assembly. |
