Hypodermic syringe having plunger pull-out stopping structure

Details Hypodermic syringe having plunger pull-out stopping structure Hypodermic syringe having plunger pull-out stopping structure

2005-10-11

2005-10-11

Lucchesi, Nicholas D. (Department: 3763)

Surgery

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

Treating material introduced into or removed from body...

C604S218000, C604S110000, C604S194000

Reexamination Certificate

active

06953449

ABSTRACT:
A hypodermic syringe includes a barrel, the barrel having two stop portions in the rear side, a radially compressible constraint member mounted in the barrel and stopped between the stop portions of the barrel, and a plunger holding a rubber stopper and axially movably inserted through the constraint member into the inside of the barrel, the plunger having a breaking portion, and front stop flange, which is stopped against the constraint member upon back stroke of the plunger after use of the syringe for enabling the user to break the breaking portion.

REFERENCES:
patent: 5370620 (1994-12-01), Shonfeld
patent: 2003/0032928 (2003-02-01), Sudo et al.

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