The invention relates to a medical catheter for feeding a functional element, in particular an implant or a minimally invasive device, into a hollow body organ, comprising at least two working channels (10, 11) and a balloon (12) that is arranged in the distal region of the working channels (10, 11), wherein a first working channel (10) is fluidically connected to the balloon (12), and a second working channel (11) having a distal outlet opening (13) extends through the balloon (12). The second working channel (11) is connected to a proximal connection that is extracorporeal during use and adapted for inserting the functional element into the second working channel (11).