Experimental evaluation of stent retrievers’ mechanical properties and effectiveness

• DOI: 10.1136/neurintsurg-2015-012213
• Publication Date: 2016-06-06T22:13:36Z
• Authors: Paolo Machi; Franck Jourdan; Dominique Ambard; Cedric Reynaud; Kyriakos Lobotesis; Mathieu Sanchez; Alain Bonafé; Vincent Costalat
• Keywords: Radial Force Variation; Cohesion (chemistry)

Background Five randomized controlled trials recently appeared in the literature demonstrating that early mechanical thrombectomy patients with acute ischemic stroke is significantly related to an improved outcome. Stent retrievers are accepted as most effective devices for intracranial thrombectomy. Objective To analyze properties of stent retrievers, their behavior during retrieval, and interaction different clots identify device features might correlate effectiveness thrombus removal. Materials methods All available France up June 2015 were evaluated by functional tests aimed at investigating variation radial force retrieval. Devices also tested vitro thrombectomies using white red experimental thrombi produced human blood. Functional conducted a rigid 3D printed vascular model. Results Mechanical showed retrieval each stent. A constant was continuous cohesion over vessel wall higher rate clot removal efficacy. failed when interacting large (diameter ≥6 mm). Conclusions None removing diameter (≥6 Constant allows pressure clot; such allow