At least being one which extends according to at least the one part of the longitudinal axis of the long substance and aforementioned cannula section where the distal (2036) section in order to insert into the blood vessel (108) is included channel (105), in order to maintain at least 10% quantity of the blood style inside the blood vessel, in order at least the (iv) cannula (102) inside the vein which with one which is formed channel (105) and to make the influx of IV fluid to inside the blood vessel possible, the central lumen which is formed has.< Selective figure > Figure 1A血管(108)内に挿入するための遠位部を含む細長い本体と、前記カニューレ部の長手軸の少なくとも一部分に沿って延びる少なくとも1つのチャネル(105)であって、血管内の血流の少なくとも10%の量を維持するように構成された少なくとも1つのチャネル(105)と、血管内へのIV流体の流入を可能にするように構成された中央内腔とを備えた静脈内(IV)カニューレ(102)。【選択図】 図1A
