Systems for delivering fluid within a lumen may be provided. For example, a device (10) can include an elongated tubular structure (20) having a central opening (50) through which fluid may flow. The central opening can be defined by an open proximal end (30) and an open distal end (40). The elongated tubular structure can have an elastic section toward the open distal end. The device can also include a blocking device such as a balloon (90) within the central opening of the elongated tubular structure that can help or be configured to prevent the flow of fluid through the central opening between the open proximal end and the open distal end. The device can further include a balloon disposed on an outer surface of the elongated tubular structure. The balloon can be affixed to the outer surface of the elongated tubular structure at a proximal and/or distal attachment site.
