Cut the top off a baby bottle, leaving the cap, nipple and threaded part.
Separate the 3 pieces.
Make a small hole (a tiny x) in the plastic of the fistula or ostomy bag in the center of the threaded top.
Pull the tube through the hole in the bag with a clamp.
Put the nipple on the tube. Alternatively and more easily, only change
the nipple when you change the tube. You can, then, feed the small end
of the tube through the nipple, rather than bulkier end.
Put the baby nipple cap around the nipple.
Screw the baby bottle top to the threaded cut off part of the baby bottle. Be sure the entire hole in the plastic bag is inside the nipple ring.
Tighten the nipple ring with a needle nose pliers.
Reinforce the catheter nipple junction with silk tape.
