Retractable syringe

Details Retractable syringe Retractable syringe

1992-10-05

1995-02-28

Yasko, John D.

Surgery

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

Treating material introduced into or removed from body...

604195, 604263, A61M 500

Patent

active

053933010

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: 4883470 (1989-11-01), Haindl
patent: 4897083 (1990-01-01), Martell
patent: 5002536 (1991-03-01), Thompson et al.
patent: 5104384 (1992-04-01), Parry

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