| 摘要 |
A self-destructing disposable syringe comprising a syringe housing (1), a plunger with plunger rod (2) and plunger head (3) with seal (3'), and an injection needle (4), an extension (7) running from the external end wall (5) of the housing (1) and equipped with inwardly bendable flaps (6); a holder (8) located centrally in the housing (1) having a central bore (9) and having a flange (10) formed at the end facing the plunger head (3) having a liquid-tight seal (11) against the liquid chamber (12) of the housing (1); and having a wholly or partly tapered part (15) extending inside the flapped extension (7) of the housing (1) and having an end bead (16) with an inverted collar (17) for interaction with and retention (21) of the inwardly bent flaps (20) on the extension (7) of the housing (1); having an injection needle (4) running through the bore (9) of the holder (8), an end sleeve (22) which is coaxial with and intimately surrounds the flapped extension (7), which extension and end sleeve can be made in one piece; and means (18, 13, 14, 20) for retracting the hypodermic needle (4) inside the syringe housing (1) after use.
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