Prevention of premature gelling of delivery devices for pH dependent forming materials
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United States of America Patent
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Sep 20, 2016
Grant Date -
Apr 21, 2011
app pub date -
Mar 16, 2010
filing date -
Oct 16, 2009
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Abstract
The present disclosure provides treatment of an apparatus, in embodiments a delivery device, which prevents premature gelling of any materials or precursor(s) of a pH dependent forming material, in embodiments a hydrogel, dispensed by the delivery device. The pH microenvironment near the surface of a lumen of the device, in embodiments the tip of a spray applicator through which the material to be dispensed is expelled from the device, may be controlled to prevent premature gelling.
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