| 摘要 |
<p>A device for after-use protection of a hypodermic needle, particularly of the butterfly type, comprising an elongated flat laminar element (2) having, at one end and on two sides, two laminas (3a, 3b) which are mutually spaced by a longitudinal central space and are folded toward the laminar element (2) in order to form two blind lateral flat guides (4a, 4b) for the sliding of the butterfly wings (a1, a2) of the needle (A). The blind lateral flat guides (4a, 4b) are slightly curved away from the surface of the element (2) and are adapted, when the needle (A) retracts, to press its point so that it slides against the surface of the central band (5) of the element (2) in order to wedge into spaces that lie between raised saw-toothed teeth (6a, 6b) on the band (5) in order to prevent the escape of the needle (A). <IMAGE></p> |
