Patent ID: 8251942

Claim:
A system for removing blood containing contrast dye, comprising: an inner catheter having a fixed proximal end and a distal free end; an outer catheter having a proximal end and a distal end, the inner catheter being partially coaxially disposed within the outer catheter defining an annual outer channel between the inner catheter and the outer catheter, the fixed proximal end of the inner catheter being coincident with the proximal end of the outer catheter, the inner catheter partially extending outward from the distal end of the outer catheter defining an annular suction orifice between an inner wall of the distal end of the outer catheter and an outer wall of the inner catheter; a first balloon mounted on the outer catheter adjacent the distal end of the outer catheter; a second balloon mounted on the inner catheter adjacent the distal free end thereof, the distal free end extending beyond the second balloon; a first lumen in communication with the first balloon, the first lumen having a first inflation port; a second lumen in communication with the second balloon, the second lumen having a second inflation port; a third lumen in communication with the annular outer channel and the annular suction orifice for draining blood from between the first and second balloons, the third lumen having a first suction port, wherein the annular suction orifice includes a guide covering the annular suction orifice, the guide centering the inner catheter and having a plurality of apertures defined therein communicating with the annular suction orifice; and a fourth lumen in communication with the inner catheter for draining blood through the distal free end of the inner catheter and the inner channel, the fourth lumen having a second suction port.