Sequential delivery syringe
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United States of America Patent
Stats
-
Apr 7, 1992
Grant Date -
N/A
app pub date -
Jul 15, 1991
filing date -
Jul 15, 1991
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The syringe of the invention segregates various fluids or solutions within separate compartments of its barrel, to be delivered in a specific sequence as they are expelled from the delivery tip by actuation of its plunger. A plurality of stoppers are incorporated within the barrel, with all but the one adjacent to the plunger includng a piercing device to penetrate each following stopper in sequence. The length of the piercing shaft of each such device is selected sufficient to pierce the stopper advancing towards it, yet not so long as to reach the piercing shaft of that advancing stopper.
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Family
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