Patent ID: 8920392

Claim:
A device for storing and administering a non-occluded oxybutynin topical composition comprising: a) a non-occluded oxybutynin topical composition comprising: i) a therapeutically effective amount of oxybutynin; ii) a thickening agent and iii) 50% or more based upon the weight of the non-occluded oxybutynin topical composition of a solvent; b) a reservoir for the non-occluded oxybutynin topical composition; and c) a laminate surrounding the reservoir and non-occluded oxybutynin topical composition comprising: i) a first polymer that is in contact with the non-occluded oxybutynin topical composition; and ii) a metal foil bound to the first polymer layer; and d) a notch or partial scoring of the laminate surrounding the reservoir and non-occluded oxybutynin topical composition wherein the notch or partial scoring facilitates the opening of the device for dispensing the non-occluded oxybutynin topical composition from the device; and wherein the device can withstand 30 pounds of pressure without bursting when squeezed between two platens of a motorized test stand and when the device is stored at 25° C. and 60% relative humidity for twenty-six weeks the non-occluded oxybutynin topical composition contains not more than 0.2% of phenylcyclohexyl glycolic acid ethyl ester (PCGE); not more than 2.0% phenylcyclohexylglycolic acid (PCGA) and there is not more than a 20% change in the solvent content.