Retractable syringe

Details Retractable syringe Retractable syringe

1995-02-27

1997-07-08

Yasko, John D.

Surgery

Means for introducing or removing material from body for...

Treating material introduced into or removed from body...

604240, 604263, A61M 532

Patent

active

056455356

ABSTRACT:
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 cartridge [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].

REFERENCES:
patent: 4897083 (1990-01-01), Martell
patent: 5098390 (1992-03-01), Wallingford
patent: 5304154 (1994-04-01), Gloyer et al.
patent: 5484421 (1996-01-01), Smocer

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