An invasive luminal device intended to be inserted into the rectum and/or colostomy site for the administration of irrigation fluid into the rectum and/or large intestines during a rectal irrigation, colonic lavage, enema, and/or colostomy site irrigation procedure. Available in a variety of designs, it may be referred to as a cone, tip, speculum, or rectal catheter, and may include an inflatable balloon for retention. This is a reusable device.