Device for manually controlling delivery rate of a...

Details Device for manually controlling delivery rate of a... Device for manually controlling delivery rate of a...

2005-10-07

2009-11-03

Sirmons, Kevin C (Department: 3767)

Surgery

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

Treating material introduced into or removed from body...

C604S208000, C604S227000

Reexamination Certificate

active

07611495

ABSTRACT:
An injection retarder for mechanically/manually reducing the rate of delivery of a hand-held hypodermic syringe and a syringe having same are provided. The injection retarder and syringe include means for selectively slowing a rate of progress of the plunger into the barrel. For example, a thumb tip rest is provided against which the thumb may be braced, thereby providing additional mechanical advantage and much finer manual control of the rate of injection. Alternatively, a set of teeth and an opposing mating tooth or pawl are provided which increase friction and slow the progress of the plunger.

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