I remember a mention of research out of California about an artificial kidney that is placed in a backpack for portability. II have located this article dated January 29, 2021 from UCLAHealth that says that "Dr. Kurtz estimates that his team needs another 18 months to refine the technology on the wearable artificial kidney and then will focus on the implantable artificial kidney."
https://connect.uclahealth.org/2021/01/29/artificial-kidney-could-supplant-dialysis-the-decades-old-standard-treatment-for-kidney-failure/
@mikek206, This is quite an amazing and also complicated project. After reading this article, how would you feel about a wearable device?