Ring-shaped devices

Abstract

The invention relates to a ring-shaped device comprising: (a) a first compartment comprising an non-medicated core of ethylenes˜vinylacetate copolymer, encircled by a steroid hormone loaded ethylene-vinylacetate copolymer layer, and a non-medicated outer layer of ethylene-vinylacetate copolymer; (b) a second compartment comprising a core of ethylene-vinylacetate copolymer loaded with a steroid hormone and a non-medicated outer layer of ethylene-vinylacetate polymer; and (c) optionally placebo segments of a thermoplastic material separating the first from the second compartment. Preferably, the invention is a two-compartment vaginal ring, the first compartment comprising crystalline etonogestrel and the second compartment comprising a (sub)-saturated mixture of etonogestrel and ethinyl estradiol, both compartments optionally being separated from each other by placebo segments of high density polyethylene.

Dependencies are inferred from the claim text.