| 摘要 |
<p>Injector for mixing, dissolving and administering a medicament stored in mutually separated chambers, said injector consisting of a body (1) the cavity of which contains a pushing mechanism and a freely disposed replacement insert (7) comprised of a hollow cylinder being separated by means of three pistons into three chambers (19, 18 and 30).An injection needle (16) is arranged within the third chamber (30) guide cylinder (17) located below the third piston (12). A plug (13) closes the third chamber (30) of the replacement insert (7) and a union nut (6) closes from below the body (1) cavity. The pushing mechanism consists of a pull rod (2), a compression spring (3) and a safety (4). The safety (4) is located on the upper portion of the body (1) cavity bottom (27). The compression spring (3) is inserted on the pull rod (2). The pull rod (2) is provided in its upper section with two stops (24 and 25) for successive fall down of the pull rod (2) through an opening (28) performed in the safety (4) into a first working position and a second working position.</p> |
