The procedure was detailed and first performed in 1969 by Dr. Nils Kock.
[citation needed] Kock pouch ileostomy is indicated for patients who are unfit for ileal pouch anal anastomosis (IPAA) because the anus and anal sphincter will be removed during the operation; and patients who develop severe incontinence after IPAA.
[1] A Kock pouch need not be created during the initial colectomy surgery.
[citation needed] The pouch has a volume of 500ml to 1000ml so that feces can be stored temporarily and the patient need not carry a stoma bag.
A valve is constructed by intussusception of the terminal ileum,[2] thereby containing the stored feces.