1985 Willem J. Kolff invented the artificial kidney dialysis machine

In 1985, Dutch-American physician and biomedical engineer Willem J. Kolff continued his pioneering work in artificial organ technology by advancing the development of artificial kidney dialysis machines in the United States, further refining a device he had first introduced decades earlier during World War II. Often referred to as the “father of artificial organs,” Kolff’s work laid the technical foundation for modern hemodialysis machines used worldwide to treat patients with kidney failure. Kolff initially built the first practical artificial kidney in 1943 in the Netherlands, using materials that were available during wartime, including cellophane sausage casing as a semipermeable membrane. The device successfully treated a patient with acute kidney failure in 1945. After moving to the United States in 1950, Kolff continued improving dialysis technology and contributed to the development of several artificial organ systems, including components of early artificial heart designs. By 1985, dialysis machines had evolved into more compact and reliable systems, incorporating improved membrane technology, better fluid control mechanisms, and enhanced safety features. Kolff’s ongoing research and mentorship at institutions such as the University of Utah supported the refinement of hemodialysis equipment and artificial organ engineering. Hemodialysis works by circulating a patient’s blood through a dialyzer, where waste products and excess fluids pass through a semipermeable membrane into a cleansing solution known as dialysate before the purified blood is returned to the body.