| 摘要 |
<p>The invention relates to a disposable a safety syringe, which mainly includes a needle (1), a protective sleeve (2), and a barrel (3), the needle (1) is attached to the barrel (3) by a plug-connection portion (11), and on the outer edge of the plug-connection portion (11) is disposed a slide block (13) which consists of a basel (131), a guide-moved rod (132), and an upper stop portion (133), and at the outer edge of the protective sleeve (2) is disposed a sliding rail (21) in which is disposed a protruding point (211) near the front end and back end on one side or both side, and one or more resist-back block (212) is disposed behind the protruding point (211) of the sliding rail (21) near its back end, the protective sleeve (2) is covered on the outer edge of the needle (1), the needle (1), the needle (1) pass through the sliding rail (21) of the protective sleeve (2) by the guide-moved rod (132), and is pressed against the interior side wall face of the protective sleeve (2) by the base (131), and is pressed against the outer side wall face by the upper stop portion (133).</p> |
