Disclosed is a medical device or system comprising an elongate member having a distal end and a proximal end an inflow lumen disposed within the elongate member, the inflow lumen having a proximal end, a distal end and a slanting exit opening at the distal end of the inflow lumen and an outflow lumen also disposed within the elongate member, the outflow lumen having a proximal end, a distal end and a slanting receiving opening at the distal end of the outflow lumen. The disclosed medical device or system further comprises pressure sensors disposed at the distal end of the elongate member. Also disclosed is a method of employing the above disclosed device or variations thereof to remove small stones or small stone fragments from within the bodys lumen or internal organ of a subject.
