New Technology and InnovationsThe Novel 4.5F CoKatte Catheter for Stent Delivery Facilitation in Complex Coronary Artery Lesions

BackgroundThe mother and child technique with a deep-seated 4F Kiwami catheter has been reported to be effective for delivering stents to complex lesions.ObjectivesTo assess the feasibility and efficacy of a novel 4.5F child catheter for deep insertion and stent deployment into the distal coronary artery for the treatment of complex lesions.MethodWe retrospectively evaluated 51 consecutive patients, who underwent percutaneous coronary intervention between January 2011 and December 2013, using a 4.5F CoKatte catheter after stent delivery failure using the conventional procedures. We evaluated the procedure success, need for an additional anchor balloon technique, and complications related to the deep insertion.ResultsStent delivery to the intended lesion was successful in all cases. For advancement and subsequent deep intubation of the catheter, 42 lesions required the additional anchor balloon technique. No complications, including proximal dissection, air embolism, and severe ischemia, were observed in relation to the deep insertion of the catheter.ConclusionPercutaneous coronary intervention with the novel 4.5F catheter is a safe and effective method, which can facilitate stent delivery to a complex coronary lesion.