Multiple choice general knowledge science & technology Who invented Kidney Machine? Jan Baptista Van Helmont(Belgium) William Harvey(Britain) Kolf(Netherlands) Martin Clive(U.S.A) Reveal answer Fill a bubble to check yourself C Correct answer Explanation Willem Kolff invented the first practical dialysis machine (kidney machine) in the Netherlands during World War II (1943). His invention saved countless patients with kidney failure and pioneered the field of artificial organ replacement.