MERCI Retriever

Wechsler LR (2006) Does the Merci Retriever work Against. Stroke 37 1341-1342 discussion 1342-1343... 

The MERCI Retriever (Concentric Medical, Inc., Mountain View, CA) is a flexible nitinol wire with coil... 

The Catch device (Balt Extrusion, Montmorency, Erance) is a distally closed, self-expanding nitinol cage that has also been used for thrombectomy with promising results [32]. A comparison between the MERCI and the Catch devices in an animal model has demonstrated superiority of the MERCI Retriever, which resulted in higher rates of overall recanalization (90% vs. 70%), higher chances of recanalization at the first attempt, and a lower rate of thrombus fragmentation/ distal embolization [33]. 

The mechanical embolus removal in cerebral ischemia retriever (MERCI retriever) or endovascular mechanical embolectomy is a recently developed... 

The ongoing IMS III trial is a randomized, multicenter, phase III trial continuing the investigation into the efficacy of the combined IV and lA approach to treat acute stroke. Patients are being randomized to IV/IA therapy and IV rt-PA alone in a 2 1 ratio. In the group allocated to combination IV/IA therapy, the physician will select either the EKOS microcatheter or a standard microcatheter to infuse rt-PA, or select the Mechanical Embolus Removal in Cerebral Ischemia (MERCI) clot retrieval device. The primary outcome is the percentage of patients with an mRS score of 0-2 at 90 days. ... 

The MERCI trial was a prospective single-arm, multicenter trial designed to test the safety and efficacy of the MERCI clot retrieval device to restore the patency of intracranial arteries in the first 8 hours of an acute stroke. All patients were ineligible for IV rt-PA. The occlusion sites were the intracranial vertebral artery, basilar... 

Connor-Ballard, P. (1998). Angels of the Mercy Fleet Nursing the ill and wounded aboard U.S. Navy hospital ships in the Pacific during World War II. Retrieved March 27, 2007 from http // 131.158.7.207/cgi-bin/tsnrp/search3tudies.cgi id=149... 

Fig. 13.4 Combined MERCI thrombectomy and balloon angioplasty for treatment of acute atherosclerotic occlusion, (a) Baseline angiogram demonstrates complete occlusion of the midsegment of the basilar artery black arrow). Note the PICA-anteiior-inferior cerebellar artery (AICA) collaterals (white arrow) with reconstitution of flow at the distal basilar artery, (b) Native image demonstrates the MERCI device deployed distally to the occlusion (white arrow), (c) Photograph of the retrieved thrombus that caused the occlusion (black arrow). It presumably originated...

The Multi-MERCI trial was an international multicenter single-arm trial with the main objective of exploring the safety and efficacy of thrombectomy in patients who fail IV rt-PA. In addition, safety and technical efficacy data for a second-generation retriever were collected [24, 27]. The inclusion/exclusion criteria, techniques, and measures of outcome were otherwise similar to the ones used in the MERCI trial. A total of 177 patients were enrolled in the study. The device was deployed in 164 patients who served as the... 

Another advantage of angiography during acute stroke treatment is that it allows mechanical disruption of the clot. There are several methods available today. Among them are angioplasty balloons, clot extraction devices (corkscrew retriever MERCI device), ultrasound aided catheters and simple manipulation of the clot... 

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