| 摘要 |
<p>Hollow-needle device (100) comprises a hollow plunger (105), a body part affording a cylindrical chamber (101) within which the plunger (105) is sealingly slidable, a hollow-needle carrying hub (120) for automatic retraction into the plunger (105), and a holding provision (140) internally of the plunger (105) for the hub (120) after retraction. The holding provision (140) comprises a part (141) deflectable internally of the hollow plunger (105) and into obstruction of return of the retracted hub (120).</p> |
