| 摘要 |
<p>A butterfly needle assembly, includes a needle head (l) and a needle sheath (2), wherein two stick slices (12) are extended from each of the two sides of the needle head (l), respectively, and each stick slice (12) has a bending part (121). The needle sheath (2) has several slide slots (21) corresponding to the position and number of the stick slices (12). At the peak end near the back-end of a slide slot (21) in one side and the tail end near the back-end of the slide slot (21) in the other side, two containing slots (23) are provided, respectively. On one side of the needle sheath (2) a hand holding part (24) is provided. When in use, bends the stick slices (12) at their bending part (121), then presses the hand holding part (24) of the needle sheath (2) to pull back the sheath, which makes the injection needle (13) come out to inject or draw. When the needle sheath (2) moves back to the back-end of the needle head, the front brims of the stick slices (12) of the needle head (1) are held in the holding part (22) at the front-end of the slide slots (21), which prevents the needle sheath (2) from sliding.</p> |
