Patent ID: 8740929

Claim:
A substance delivering spacer device for implantation in an opening of a paranasal sinus, said device comprising: a tubular body having a wall, a hollow passage extending therethrough and being open at either end and perforations formed in the wall through which bodily secretions may flow into the hollow passage, the wall of said tubular body comprising: an inner layer comprising a polymer that is devoid of therapeutic substance; an outer layer comprising a polymer that is devoid of therapeutic substance; and a therapeutic substance containing layer located between the inner and outer layers, said therapeutic substance containing layer being substantially solid and comprising a polymer combined with a therapeutic substance such that the therapeutic substance will elute therefrom when the device is implanted; wherein said outer layer is constructed to allow a therapeutically effective amount of the therapeutic substance to elute through the outer layer and from the device while implanted, wherein said inner layer is substantially impervious to the therapeutic substance, wherein said therapeutic substance comprises at least one steroid; said tubular body being flexible and sufficiently elastic to frictionally engage and remain in the opening following its insertion into the opening; and the device having an outer diameter r a and an inner diameter r i , wherein the ratio Q of the outer diameter r a to the inner diameter r i is greater than or equal to 1.2 but less than or equal to 3.0.