Assura sleeve. Easy to use. Disposable irrigation sleeve has an adhesive backing, and can be used with the SenSura or Assura baseplate. Irrigation creates security and freedom for people with a sigmoid colostomy, enabling a regular, controlled bowel movement. Disposable. Adhesive-backed. After irrigating, an Assura Minicap is recommended. Irrigation should not be self-administered before you have been fully instructed by a doctor or nurse.