Patent ID: 7883515

Claim:
A medical device, comprising: an elongated member configured to be disposed within a urinary tract of a patient, the elongated member defining a suction passageway along a longitudinal axis of the elongated member, the elongated member having a proximal portion and a distal portion, the proximal portion configured to be coupled to a vacuum source configured to provide suction through the suction passageway, the distal portion of the elongated member having a tip, the tip including a side wall having an outer surface, a distal end surface, and an inner surface defining a portion of the suction passageway, the side wall between the inner surface and the outer surface being devoid of another lumen, the inner surface being gradually tapered such that an inner diameter of the tip is less than an inner diameter of a portion of the elongated member disposed proximally from the tip, the distal end surface of the side wall configured to contact a kidney stone and retain the kidney stone when the suction is provided through the suction passageway; and a blocking member coupled to the tip such that a portion of the blocking member extends from the outer surface of the tip, the blocking member configured to contact a portion of the urinary tract of the patient, the blocking member being substantially rigid and having a distal end surface that is substantially co-planar with the distal end surface of the side wall.