| 摘要 |
<p>A disposable self-destructive syringe, which belongs to syringes for medical treatment, comprises a needle (1), a tube (2), an injecting piston-rod (3), ratchet :rooves(4), a restrictive step (5), an installation opening (6), an anti-return member (7), anti-return prods (8), ratchets (9), a sealing plug (10) and a reciprocal motion region(ll). Theneedle(l) is conglutinated on the tube (2), the injecting piston-rod (3) is arraged in the tube (2), the anti-return member (7) is arranged in the gap of the injecting piston-rod (3) and in the rear end of the tube (2), and the sealing plug (10) is arranged in the tube (2) and mounted on the front end of the inhecting piston-rod (3). urthermore, the ratchet grooves (4) arraged on the injecting piston-rod (3) can be one or more, which the fewer the number of ratchet grooves (4), the larger the interval of discharging inhaled air will become.</p> |
