The invention relates to an intravascular catheter for invasive diagnostics of peripheral vessels, comprising a proximal part, a shaft, and a distal part with a hole or holes for delivering fluid from the catheter lumen, characterised in that its distal part (1), optionally positioned at an angle relative to the catheter shaft (2), is provided with at least one hole (4) located in a side wall of the catheter and with an atraumatic tip (5) comprising, in its top part, a flexible passage valve (6) in the form of a slot.
