The present invention relates to a medical device, in particular a blood treatment device and in particular a dialysis machine, having at least one handle arrangement, in particular a handle arrangement for a door, wherein the handle arrangement has at least one handle that is configured in ring shape; and wherein the handle arrangement furthermore has at least one disinfection unit that works with light, preferably with UV light, and that is arranged to disinfect the handle, with the handle arrangement furthermore having at least one drive unit that is configured to move the handle along the disinfection unit.