Retractable syringe

A - Human Necessities – 61 – M

Patent

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Details

A61M 5/32 (2006.01) A61M 5/31 (2006.01) A61M 5/34 (2006.01) A61M 5/50 (2006.01)

Patent

CA 2093217

A retractable syringe includes a barrel (212), one end of which comprises a mounting collar (214). A needle carrier (216) is releasably mounted within the collar (214), and releasably supports a needle cartridge (218). A hypodermic needle (20) is mounted within the collar (218). The collar (214) has inclined threads (650) in its bore wall for engaging lugs (248) on the carrier (216). A cap (910) is provided with a flange (960) having a lower surface (962) wider than the proximal end of barrel (212) and dogs (952). The dogs (952) are sized to insert into threads (650), whereby dogs (952) ride threads (650) to seal surface (962) against the proximal end of barrel (212).

Seringue rétractible comprenant un corps (212) dont une extrémité présente un collier de montage (214). Un support d'aiguille (216) est monté amovible dans le collier (214), et maintient un ensemble aiguille (218). Une aiguille hypodermique (20) est montée dans l'ensemble aiguille (218). Le collier (214) présente des filets inclinés (650) sur sa face interne, dans lesquels s'engagent des languettes (248) du support (216). Un capuchon (910) est muni d'un bord (960) dont la surface inférieure (962) est plus large que l'extrémité proximale du corps (212) et de taquets (952). Ceux-ci sont dimensionnés de manière à être en prise avec les filets (650), et à se déplacer sur ces derniers pour faire en sorte que la surface (962) s'appuie hermétiquement contre l'extrémité proximale du corps (212).

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