| 摘要 |
<p>The invention relates to a needle device which is made from a housing (1, 2, 3) having a distal wall (4) with a front (5). The housing further holds a compartment (21, 22) containing a liquid drug to be expelled. A needle cannula (10) for expelling the liquid drug having a distal end (1 1) and a proximal end (12) is also present, the needle cannula (10) being axially movable from a first position to a second position; The first position being a position in which the distal end (1 1) of the needle cannula (10) is retracted proximally behind the front (5) of the distal wall (4) of the housing (1, 2, 3), and wherein the proximal end (12) of the needle cannula (10) is located outside the first compartment (21, 22), and the second position being a position in which the distal end (1 1) of the needle cannula (10) is extended distally to the front (5) of the distal wall (4) of the housing (1, 2, 3), and wherein the proximal (12) end is located inside the compartment (21, 22).</p> |
