| 摘要 |
A vascular access device (100) suitable for evacuating air from a blood vessel having a vessel wall comprising a cannula (105) for insertion into the blood vessel; wherein an anchoring organ (101) having a first end (102) and a second end (112), the first end (102) of the anchoring organ being fixed to a first end (103) of the cannula (105), and the anchoring organ (101) being adapted to alter its shape between an out-spread shape and a streamlined shape upon a movement being applied to it;-a linkage (119, 120, 131, 132, 141, 142) comprising:-a first sleeve portion (119) being slideable along the cannula (105);-a second sleeve portion (120) being fixedly attached to the cannula (105);-a first outer arm (131) and a second outer arm (132), symetrically arranged relatively to the cannula (105), and opposite each other, the first outer arm (131) and the second outer arm (132) being mechanically connected to the first sleeve portion (119) and being pressable by a persons fingers, wherein the length of the arms is adapted to transfer a movement from the pressing to a movement stretching the anchoring organ (101). |
