Patent ID: 7763274

Claim:
Forms of administration for application on the skin or mucosa, comprising a carrier matrix with pressure sensitive adhesive or mucoadhesive properties and at least one active substance, said carrier matrix having a plurality of porous particles which serve as active substance reservoir and contain at least one active substance, wherein said particles are selected from the group consisting of open-cell particles of natural sponges, open-cell particles of synthetic sponges, and open-cell particles of solidified foams, the material for said synthetic sponges and solidified foams being selected from the group of solidified gelatine foam, collagen foams, polyurethane foams, microcellular polyester foams and polyether foams; or are pulverulent, liquid-loaded particles or particle agglomerates which have been manufactured by dissolving an inert gas, under pressure, in an active substance-containing solution or suspension and subsequently releasing the pressure on the solution or suspension while simultaneously admixing a pulverulent, solid carrier material said carrier material being selected from the group consisting of starches and celluloses.