METHODS, SYSTEMS, AND DEVICES FOR POSITIVE PRESSURE PHARMACEUTICAL VIALS
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United States of America Patent
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Issued Date -
Jul 30, 2015
app pub date -
Jan 29, 2014
filing date -
Jan 29, 2014
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Abandoned
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Abstract
Methods, systems, and devices are described for calculating a push pressure for a pharmaceutical vial with a syringe, the method including accepting data regarding at least one parameter of the pharmaceutical vial, at least one parameter of a vial cap with a seal, at least one parameter of the syringe, and a single dose volume of a liquid pharmaceutical; calculating a volume of headspace over the liquid pharmaceutical with a computing device; calculating an ejection pressure based on the single dose volume of the liquid pharmaceutical and the volume of headspace; calculating a motive pressure based on a static force and a cross-sectional area of the syringe; defining the push pressure as the greater of the ejection pressure or the motive pressure; and reporting the push pressure to a user. The method further includes calculating a molar amount of inert gas needed in the pharmaceutical vial to generate the calculated push pressure.
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