| 摘要 |
<p>A safe injector comprises an outer sleeve (1), a piston (3), a core bar (2), and a needle head assembly. A core bar locking ring (11) is mounted within the rear part of the outer sleeve (1), and the needle head assembly is movably mounted within a needle head seat (10) at the fron ing ring (6), and a sealing ring (7). The needle tube seat (5) is movably mounted and fixed within the needle head seat (10) through the needle tube seat clamping ring (6), the needle tube seat clamping ring (6) is tightly mounted in a clamping ring cavity (9) of the needle head seat (10), and has an intilted elastic damping claw (6-2). A protruding engaging column(5-4) is formed on a rear part of the needle tube seat (5), an engaging cavity (2-1) mating with the engaging column (5-4) and having homological shape with the engaging column (5-4) is formed on a protruding part at the forward part of the core bar (2).t part of the outer sleeve (1). The needle assembly has a needle tube (4), a needle tube seat (5), a needle tube seat clamp</p> |
