WavelinQ™ EndoAVF System creates an AV fistula without open surgery. An endovascular AV fistula (endoAVF) does not have a surgical scar to identify the location of the AV fistula. Recognizing and accessing an endoAVF is not complicated, but it is a little different than surgical AVF cannulation. View the resources below for tips on how to successfully cannulate a WavelinQ™ EndoAVF.