Aqueous gel formulation and method for inducing topical anesthesia
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United States of America Patent
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Jun 24, 2014
Grant Date -
Dec 5, 2013
app pub date -
Aug 7, 2013
filing date -
Jul 24, 2006
priority date (Note) -
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Abstract
Disclosed is a stable aqueous gel formulation suitable for topical use comprising water, an anesthetic (e.g., lidocaine hydrochloride), a viscoelastic polymer, and a tonicity modifier, wherein the aqueous gel formulation is free of preservatives and phosphate buffer, is isotonic with physiological fluids, and is sterile and has low particulate count. Also disclosed is a method of inducing topical anesthesia on a tissue or organ, e.g., the eye, of an animal comprising providing a stable aqueous gel formulation comprising water, an anesthetic, a viscoelastic polymer, and a tonicity modifier, wherein the aqueous gel formulation is free of preservatives and phosphate buffer, is isotonic with physiological fluids, and is sterile, and topically administering an effective amount of the aqueous gel formulation to the tissue or organ of the animal.
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