Plaster for covering wounds - has porous cushion contg. medically effective substance, perforated covering sheet and adhesive edge

摘要

The wound-plaster incorporates a porous cushion with a perforated covering sheet and an adhesive edge securing it to the skin. The cushion contains or carries a reserve of a medically-effective substance which can be delivered to the skin when in the working position. The covering sheet can incorporate groups of two or more cutting edges, arranged in a star pattern, and spaced apart. Alternatively, the substance can be in a sealed capsule, which can be broken open, inside the cushion, Typically this can be done by a thread passing through the edge of the plaster, and the capsule can be covered by a sheet with a weakened zone.