Regulating flow from a stoma on a patient

A medical appliance, comprising:

• a support unit comprising a body portion with a first side and a second side, the first side includes a stem extending transversely away from the body portion, the second side comprising a recess, wherein the body portion comprises an annular disc having a first side and a second side, and the stem comprises a first cylindrical member coupled with the first side;
• a moveable spigot inserted into the recess, the moveable spigot comprising a second cylindrical member coupled with the second side, the second cylindrical member rotatable relative to the annular disc, wherein the second cylindrical member has a first position that forms a flow path through the first cylindrical member and the annular disc;
• and
• a seal unit disposed on the stem, the seal unit comprising material that expands to create a barrier to fluid flow and further comprising a hollow tube circumscribing the first cylindrical member, the hollow tube comprising material that is both absorbent and expandable.