The anastomosis part of the procedure would be joining the two pieces of healthy tissue on either side of the resection, creating a newly shortened length of intestine for food and stool to pass through. An arterio-venous fistula, created for dialysis, is an example of a type surgical anastomosis. For this procedure, a vein and an artery are spliced together, creating a larger blood vessel. This large vessel, when healed, can be used to insert the large dialysis catheter that is used to perform routine hemodialysis.