MICROCLIP HEMOSTASIS FOR SURGICAL-TREATMENT OF CEREBRAL ARTERIOVENOUS-MALFORMATIONS

The authors describe newly designed microclips and their utility in ob taining haemostasis during the surgical resection of cerebral arteriov enous malformations. The microclips are particularly well-suited for c ontrolling bleeding from small fragile vessels often encountered on th e periphery of large arteriovenous malformations during the final stag es of a surgical procedure. Histological examination of these vessels revealed very thin dilated walls without elastic layers, causing easy rupture. Hence, haemostasis using conventional means, such as bipolar coagulators, can be extremely difficult. We have used microclips on su ch vessels in 14 patients with arteriovenous malformations and control led bleeding successfully.