Single-use syringe

Details Single-use syringe Single-use syringe

2006-02-14

2006-02-14

Lucchesi, Nicholas D. (Department: 3763)

Surgery

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

Treating material introduced into or removed from body...

C604S197000, C128S919000

Reexamination Certificate

active

06997901

ABSTRACT:
A single use syringe (10) includes a needle (18), barrel (16), plunger assembly (20) and shield (12). The barrel (16) bears a locking member (26) which encircles the front end of the barrel (16) and is carried forward by the barrel (16) to a position where it engages the shield (12) and is retained by the shield (12) such that the locking member (26) is separated from the barrel (16) as the barrel (16) is withdrawn rearwardly after use. The locking member (26) is resilient and, after it is removed from the barrel (16), assumes a configuration which prevents subsequent forward movement of the barrel (16) within the shield (12). The barrel includes a frangible seal (30) which is broken by rearward movement of needle mount (32). The shield (12) includes a shield extender (14) for controlling the depth of penetration of the needle. The syringe can also be used to inject medicament into a IV bag via a male port as shown in FIG.7.

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