Medical administration barrel with grooves and method of sealing same
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United States of America
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Mar 31, 2020
Grant Date -
Oct 25, 2018
app pub date -
Sep 11, 2015
filing date -
Sep 11, 2015
priority date (Note) -
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Abstract
A barrel is provided having open proximal end and a closed distal end, and at least one groove in an interior wall thereof. The groove(s) define a length extending a distance from the open end of the barrel toward the distal end of the barrel and defining a substantially constant depth and width along the length thereof. A piston is in sealing engagement with the interior wall of the barrel. The groove(s) permits fluid to bypass the piston when positioned along the groove(s). At least a portion of the piston is positioned distally from the groove(s), thereby sealing substance within the barrel.
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