title: The clinical utility of the Kopitnik arteriovenous malformation microclip during STA-MCA bypass surgery.
abstract: OBJECTIVE
  Yasagil temporary clips have been widely used in extracranial-intracranial (EC-IC) arterial bypass surgery. However, the extremely delicate vessels involved often require the application of finer clips. We report on the use of the Kopitnik arteriovenous malformation (AVM) microclip system for superficial temporal artery-middle cerebral artery (STA-MCA) bypass.
  
  
  METHODS
  Kopitnik AVM microclips are new mechanical devices that are used during AVM surgery. They exert a pre-defined closing force of 50-70 g, and also feature a special, pyramid-shaped structure stamped on inner surfaces of the blades. These characteristics avoid vascular intimal injury and provide a secure grip. We prospectively studied their use in 15 patients requiring STA-MCA anastomosis.
  
  
  RESULTS
  Clinical results were excellent and there were no new ischemic events during 6-months' follow-up.
  
  
  CONCLUSIONS
  Kopitnik AVM microclips have several advantages; they have small and variously sized clip blades (2, 3, 4 and 5 mm), and the small clip head allows the operator an excellent view of the pathology and clip status. The Kopitnik AVM microclip appears to be clinically effective and safe for EC-IC bypass surgery, especially when smaller vessels are involved.
authors.affiliation: Department of Neurosurgery, Chonnam National University Hospital and Medical School, Dong-Gu, Gwangju 501-757, Republic of Korea.
authors.forename: Sung Pil
authors.initials: SP
authors.lastname: Joo
authors.forename: Tae Sun
authors.initials: TS
authors.lastname: Kim
authors.forename: Bo Ra
authors.initials: BR
authors.lastname: Seo
authors.forename: Jung Kil
authors.initials: JK
authors.lastname: Lee
authors.forename: Jae Hyoo
authors.initials: JH
authors.lastname: Kim
authors.forename: Soo Han
authors.initials: SH
authors.lastname: Kim
authors.forename: Joon Tae
authors.initials: JT
authors.lastname: Kim
authors.forename: Man Seok
authors.initials: MS
authors.lastname: Park
authors.forename: Ki Hyun
authors.initials: KH
authors.lastname: Cho
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D001921:Brain / Q000098:blood supply; D016893:Carotid Stenosis / Q000473:pathology / Q000601:surgery*; D002548:Cerebral Revascularization / Q000295:instrumentation* / Q000379:methods*; D005260:Female; D006801:Humans; D020925:Hypoxia-Ischemia, Brain / Q000473:pathology / Q000517:prevention & control / Q000601:surgery; D020244:Infarction, Middle Cerebral Artery / Q000473:pathology / Q000601:surgery*; D002538:Intracranial Arteriovenous Malformations / Q000601:surgery; D007431:Intraoperative Complications / Q000209:etiology / Q000517:prevention & control; D008297:Male; D008866:Microsurgery / Q000295:instrumentation / Q000379:methods; D008875:Middle Aged; D020768:Middle Cerebral Artery / Q000033:anatomy & histology / Q000601:surgery; D009072:Moyamoya Disease / Q000473:pathology / Q000601:surgery; D019106:Postoperative Hemorrhage / Q000209:etiology / Q000517:prevention & control; D011446:Prospective Studies; D013525:Surgical Instruments / Q000592:standards* / Q000706:statistics & numerical data; D013699:Temporal Arteries / Q000033:anatomy & histology / Q000601:surgery; D016896:Treatment Outcome; D055815:Young Adult