Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Michael C. Gianturco0
Date of Patent
November 3, 2009
0Patent Application Number
112458270
Date Filed
October 7, 2005
0Patent Citations Received
...
Patent Primary Examiner
Patent 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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