| 摘要 |
The device has a protection tube (5) sliding longitudinally in an annular passage (6) between a plastic outer body (4) and a plastic central body (1). The tube has a proximal gripping end (5a) to be moved selectively between a proximal retreat position and a distal protection position. Elastic locking flaps (11) extend radially from a distal end (4b) of the body (4). A tubular removable protection cap (14) with tube retaining units (15) is fixed at the end (4b) and surrounds the extending part of a needle (3) after use. The needle (3), in proximal retreat position of the protection tube, is not or little covered by the tube so that the tube is used for sampling or perfusion. The protection tube, in distal protection position, covers the needle over its entire length. |
