Patent attributes
A closure system for a drainable ostomy appliance, which appliance includes a body side wall and a non-body side wall sealed to one another to define a collection cavity and a neck portion terminating in a discharge outlet. The closure system includes a first portion on the body side wall having first and second closure members defining a gap therebetween and a second portion on the non-body side wall having a third closure member having an enlarged head portion. In an open state, the neck portion is unfolded. In a closed state, the first closure member is folded onto the third closure member with an edge of the first member engaging the enlarged head through the side wall sheet material, and the first, second and third closure members folded over onto the non-body side wall at a tight fold to seal the discharge outlet.