Adherent N,O-Carboxymethylchitosan drug delivery devices for moist tissue and methods of their use
First Claim
1. A method of providing sustained release of a drug to moist tissue comprising applying to said moist tissue a drug delivery device which is adherent to said moist tissue and includes a level of N,O-carboxymethylchitosan as a component thereof to provide said adherence, said drug delivery device further containing a sufficient quantity of the drug to be delivered to provide sustained release of said drug and permeation into said moist tissue or into the surrounding cavity, wherein said moist tissue is mucosal tissue or a tissue in a serous cavity.
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Abstract
The present invention relates to drug delivery devices for moist tissue, in particular mucosal tissue and tissue in the serous cavities, as well as a method of its use. The devices, which contain NOCC, are adherent to the mucosal tissue, allowing localized drug delivery. The devices are particularly useful in vaginal, buccal and ocular devices.
80 Citations
14 Claims
- 1. A method of providing sustained release of a drug to moist tissue comprising applying to said moist tissue a drug delivery device which is adherent to said moist tissue and includes a level of N,O-carboxymethylchitosan as a component thereof to provide said adherence, said drug delivery device further containing a sufficient quantity of the drug to be delivered to provide sustained release of said drug and permeation into said moist tissue or into the surrounding cavity, wherein said moist tissue is mucosal tissue or a tissue in a serous cavity.
Specification