Magnetic artificial anus having sphincter function

An implantable magnetic artificial anus having sphincter functions comprising:

• a flexible annular hollow bag formed of a bioaffinitive flexible film having a film thickness of 0.1 to 0.5 mm and filled with a magnetic fluid;
• and
• a plug member having in combination a cylindrical body defining upper and lower ends, and an umbrella shaped cap integral with the upper end thereof, said cylindrical body having permanent magnet disposed therein and said body having a hollow ventilation chamber extending from the upper to the lower end, said ventilation chamber having gas permeating filters disposed at each end thereof and said chamber being filled with gas permeating material, whereby said annular bag is disposed about the periphery of a natural or artificial colon and the cylindrical body of the plug member is inserted into the colon directly adjacent the annular bag such that the permanent magnet in the cylindrical body causing the flexible bag to constrict about said colon in a natural sphincter manner thereby securing the plug member within the colon.