CINCOR Contrast Removal System
Another catheter is a 11-Fr aspiration catheter (CINCOR Contrast Removal System, Osprey Medical, St. Paul, Minnesota) (Figure 7A).   Duffy and colleagues were able to successfully cannulate the CS with an aspiration catheter using a 14-Fr right internal jugular vein sheath in 31 out of 41 recruited patients. Contrast aspiration was done by pushing the foot pedal in this contrast removal system after coronary contrast injection. Using inductively coupled plasma optical emission spectroscopy, the amount of contrast extraction was measured. Those who underwent CS aspiration, they did not observe any serious adverse events associated with the device (91).
This system was also successfully placed in CS ostium through a 12-Fr femoral venous sheath in one case. After four seconds of delay post each cine angiography acquisition, contrast extraction was done using the 11-Fr CINCOR system for 10 seconds (Figure 10A ). The procedure was performed uneventfully and the patient did not experience an apparent hemoglobin drop (91,94).