A catamenial bandage pad having a soft, curved-sided shell with an elongate transverse plate, made of a molded plastic material which is form-retaining and has a characteristic to return to its original shape even though momentarily deformed by body position. The shell is filled with an absorbent material...http://www.google.co.uk/patents/US4405326?utm_source=gb-gplus-sharePatent US4405326 - Catamenial bandage
