title: New embolization microcoil consisting of firm and flexible segments: preliminary clinical experience.
abstract: OBJECTIVE
  To describe the preliminary clinical experience with a new embolization microcoil.
  
  
  METHODS
  The microcoil was made of a platinum coil spring, and consisted of firm and flexible segments. The firm segment functioned as an anchor and the flexible segment was well compacted to occlude the arteries. No Dacron fiber was attached. Seventy-one new microcoils were placed via microcatheters in 28 visceral arteries of 17 patients. Two other types of microcoils with Dacron fibers were used together in 8 arteries.
  
  
  RESULTS
  Sixty-nine new microcoils were placed and compacted successfully. Two coils were misplaced; one was retrieved and the other was left in the migrated artery, which remained patent 5 months later. All 28 arteries were occluded, and the goals of intervention were achieved successfully in all 17 cases.
  
  
  CONCLUSIONS
  The new microcoils anchored and compacted well in the arteries. The clinical feasibility of this coil design was confirmed. The additional use of other types of microcoils with Dacron fiber was necessary to obtain rapid occlusion in some cases.
authors.affiliation: Department of Radiology, Hitachi General Hospital, Jyonanncyo 2-1-1, Hitachi City, Ibaraki, 317-0077, Japan. toshiyuki.irie@ibabyo.hitachi.co.jp
authors.forename: Toshiyuki
authors.initials: T
authors.lastname: Irie
mesh_terms: D000328:Adult; D000368:Aged; D015901:Angiography, Digital Subtraction; D018207:Angiomyolipoma / Q000628:therapy; D001158:Arteries / Q000601:surgery; D001807:Blood Vessel Prosthesis / Q000009:adverse effects; D006528:Carcinoma, Hepatocellular / Q000628:therapy; D002404:Catheterization / Q000295:instrumentation; D020878:Device Removal; D004621:Embolization, Therapeutic / Q000295:instrumentation*; D004867:Equipment Design; D005240:Feasibility Studies; D005260:Female; D005500:Follow-Up Studies; D005548:Foreign-Body Migration / Q000000981:diagnostic imaging / Q000209:etiology; D006083:Graft Occlusion, Vascular / Q000000981:diagnostic imaging / Q000209:etiology; D051677:Histiocytoma, Malignant Fibrous / Q000628:therapy; D006801:Humans; D007261:Infusions, Intra-Arterial / Q000295:instrumentation; D008113:Liver Neoplasms / Q000628:therapy; D008297:Male; D008875:Middle Aged; D010438:Peptic Ulcer Hemorrhage / Q000209:etiology / Q000628:therapy; D017671:Platinum Compounds; D012107:Research Design; D013276:Stomach Ulcer / Q000150:complications / Q000628:therapy; D014057:Tomography, X-Ray Computed; D016896:Treatment Outcome; D001749:Urinary Bladder Neoplasms / Q000628:therapy; D016157:Vascular Fistula / Q000628:therapy; D019043:Vascular Neoplasms / Q000628:therapy
chemical_list: D017671:Platinum Compounds