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US Patent 11096865 Preservative removal from eye drops

Patent 11096865 was granted and assigned to TearClear on August, 2021 by the United States Patent and Trademark Office.

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Patent abstract

A particulate plug for removing a preservative from a solution, suspension, or emulsion comprising a drug is presented. The plug comprises microparticles of oxidized polyolefin (OxPO). The microparticles are irregular-shaped rigid aggregates and are sized and packed to yield a hydraulic permeability greater than 0.01 Da. The OxPO have absorbed portions of a preservative to be removed and/or a drug for delivery in solution, as can the copolymer.

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