A sampling hub for directing a medical device towards a target area, the hub comprising a hub body having at least a front end, a rear end, a top, and a bottom configured to be facing downwards in respect to the target area, a lumen passing between paroximal and distal openings at the front end or bottom and the rear end, the lumen allowing for passage of an elongate element through the entire lumen, and within the lumen, a proximal valve and a distal valve, wherein the rear of the hub is configured to allow the elongated body to enter the lumen, and the hub body at the front end or bottom of the hub body configured to allow the elongate element to exit the lumen, wherein the lumen enables guidance of the elongate element towards the target area.
