Document Detail

Evaluation of Merci Retriever by experimental modeling.
MedLine Citation:
PMID:  17062986     Owner:  NLM     Status:  MEDLINE    
The Merci Retriever is the first device for mechanical embolus removal in patients with cerebral ischemia. Use of the device was evaluated using experimental models. Three stroke model systems were created: silicone embolism model with flow system, pig embolism model, and silicone-pig tortuous artery model. The series of extraction procedures (capture, retrieval, and aspiration) was examined in the models under flow control. Coagulated blood clot was adopted as embolic material, to simulate embolic stroke of the carotid or middle cerebral arteries. Retrieval of the clot was successful in only one of six trials in the silicone model of the carotid artery, as the clot easily worked free from the helical tip. Aspiration was successful in three of the six trials. Retrieval was successful in two of four trials in the middle cerebral artery and aspiration was successful in two. Retrieval was successful in all five trials in the pig embolism model, and three of five trials in the silicone-pig tortuous artery model. The Merci Retriever does not always retain the embolism, and the helix tends to distort in acute or rough lumen. Aspiration is not always successful.
Yasuhiro Suzuki; Mitsuyuki Fujitsuka; John C Chaloupka
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Neurologia medico-chirurgica     Volume:  46     ISSN:  0470-8105     ISO Abbreviation:  Neurol. Med. Chir. (Tokyo)     Publication Date:  2006 Oct 
Date Detail:
Created Date:  2006-10-25     Completed Date:  2006-12-20     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0400775     Medline TA:  Neurol Med Chir (Tokyo)     Country:  Japan    
Other Details:
Languages:  eng     Pagination:  476-84; discussion 484     Citation Subset:  IM    
Department of Radiology, Section of Interventional Neuroradiology, University of Iowa Hospitals and Clinics, Iowa City, Iowa, USA.
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MeSH Terms
Disease Models, Animal
Embolectomy / instrumentation*
Equipment Design
Intracranial Embolism / surgery*
Models, Cardiovascular

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