| 摘要 |
<p>A needle assembly for an injector, includes a bottom (1), a coil pipe (2), a base (3) and a block structure (4). Wherein, a sleeve (11) is projected from the bottom (1), an inject needle (12) is inserted in the front end of the sleeve (11), and a sheath part (13) is recessed at the back end of the bottom (1). The bottom (1) and the base (3) are connected by the coil pipe (2), a holding part (31) is recessed at the back end of the base (3), at the front end of the base (3) a holding hole (32) joined to the holding part (31) is provided. A convex ring (33) is provided at the holding hole (32), and a lock pedestal (34) is provided at the side of the back end of the base (3). The block structure (4) consists of a front block (41), a back block (42) and one or more bending plates (43), the bending plate (43) is between the front block (41) and the back block (42) and joins them together, a lock part (44) buttoned with the lock pedestal (43) of the base (3) is provided at the front end of the front block (41), while the back end of the back block (42) props against the front edge of the bottom (1).</p> |
