Sorry, but we never published. The original work was 70 years old, so a bit hard to find online. But I can describe it.
We called it intestinal dialysis. In the early 20th century, there was research on 3 kinds of dialysis: hemo, peritoneal, and intestinal. Hemo made the first breakthrough. The others were forgotten until peritoneal was reexamined in the 80's.
If you google intestinal dialysis, you'll find something distantly related to the old research and what we worked with. But very different. We found in animal studies that you could isolate a section of small intestine to turn it into an "artificial kidney". Intestine has good blood flow and a huge surface area designed for gently moving fluids and compounds into the blood stream. We use an osmotic gradient to reverse how the intestine works.
In other words, we created precise diarrhea.
The only supplies required were tap water, a bucket, baby laxative, and a hose. Adding salts made it more precise. A touch of sugar is important (to feed the intestine). Our test system was computerized, but was essentially still just a bucket up on a shelf and a hose for siphoning.
The procedure was a bit like hemodialysis, but done non-sterile. The big difference is not removing blood from a patient. The dialysis unit is the patient's own section of intestine. Robust, self repairing, able to repel bacteria, etc.
But it was too different from our main business. It would be like Apple deciding to sell breakfast cereal. So we gave it away.