title: Efficacy of mother-child-grandchild technique: 4F and 5F inner catheters through mother guide catheter.
abstract: Stent delivery failure to the distal lesion was still encountered even after the introduction of mother-child technique using a 5F or 4F child catheter. A 5F inner catheter with a length of 112cm, and a 4F inner catheter with a length of 122cm enabled a novel mother-child-grandchild technique. In in vitro experiments, not only was backup support increased, but superior trackability could also be obtained with the mother-child-grandchild technique, over the mother-child technique. We describe the clinical data using this novel mother-child-grandchild technique to deliver a stent to the severely bended and/or calcified distal lesion.
authors.affiliation: Department of Cardiovascular Medicine, Tokyo Medical and Dental University. Electronic address: ashikaga.cvm@tmd.ac.jp.
authors.forename: Takashi
authors.initials: T
authors.lastname: Ashikaga
authors.affiliation: Department of Cardiovascular Medicine, Tokyo Medical and Dental University.
authors.forename: Shunji
authors.initials: S
authors.lastname: Yoshikawa
authors.affiliation: Department of Cardiovascular Medicine, Tokyo Medical and Dental University.
authors.forename: Ken
authors.initials: K
authors.lastname: Kurihara
authors.affiliation: Department of Cardiovascular Medicine, Tokyo Medical and Dental University.
authors.forename: Mitsuaki
authors.initials: M
authors.lastname: Isobe
mesh_terms: D000368:Aged; D015906:Angioplasty, Balloon, Coronary / Q000295:instrumentation* / Q000379:methods*; D006328:Cardiac Catheterization / Q000295:instrumentation* / Q000379:methods*; D062906:Cardiac Catheters; D017023:Coronary Angiography; D004867:Equipment Design; D005260:Female; D006801:Humans; D008297:Male; D009203:Myocardial Infarction / Q000000981:diagnostic imaging / Q000628:therapy*; D015607:Stents; D016896:Treatment Outcome
keywords: Angioplasty; Percutaneous coronary intervention