Steerable Coronary Sinus Catheter Kit, REF SCS01, 9 Fr x 20.4", Contains Phthalates, Sterile EO, Edwards Lifesciences LLC, Irvine, CA 92614. || The Steerable Coronary Sinus Catheter is a three-lumen, 9 Fr catheter with an elastomeric balloon near its tip for occluding the coronary sinus in order to retrograde perfuse the coronary circulation. An 11 Fr catheter introducer sheath, which is compatible with the Steerable Coronary Sinus Catheter contamination guard, is packaged with these catheters.