A wearable artificial kidney could be developed as a viable new dialysis technology that allows patients to be mobile and untethered during treatment results of a US Food and Drug Administration-authorised clinical trial suggest. The technology may become an alternative to conventional hemodialysis for people with end-stage kidney disease. Present-day treatment generally requires three sessions a week on a stationary machine that restricts patients' ability to walk around while it is attached and running. In contrast a wearable device would allow patients to be mobile and untethered. It could also provide additional treatment benefits from longer sessions or more frequent