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Year : 2019  |  Volume : 14  |  Issue : 4  |  Page : 1165-1167

Experimental evaluation of stent clot retrieval using the confront clot scrambling method with an equitable automatic withdrawal machine

1 Department of Neurosurgery, Aichi Medical University, Aichi, Japan
2 Neuroendovascular Therapy Center, Aichi Medical University, Aichi, Japan
3 Department of Electronic Control and Robot Engineering, Aichi University of Technology, Aichi, Japan

Correspondence Address:
Dr. Tomotaka Ohshima
Neuroendovascular Therapy Center, Aichi Medical University, 1-1 Yazakokarimata, Nagakute, Aichi 480-1195
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/ajns.AJNS_285_18

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Background: Stent clot retrievers can be used to perform mechanical thrombectomies to treat cases of acute major arterial occlusion. This approach is associated with faster recanalization and better outcomes than internal treatments. The function of the stent retrievers is based on a technique known as confront clot scrambling method (CCSM), which usually involves the insertion of two stent retrievers (one from each side) and the simultaneous withdrawal of the retrievers with an equal force. It was determined that a stent used to remove the sham clot possessed a stronger ability for clot retrieval. However, this method involves inherent manipulation bias, and the results may vary due to operator-specific factors. Thus, this approach can be difficult to teach, especially to beginners. Materials and Methods: We evaluated the accuracy of using an equitable automatic withdrawal machine for the CCSM on a model of a sham clot in the middle of a polyvinyl chloride tube. Results: This tool is expected to facilitate thorough and repeated training that is needed to learn the fine maneuvers against invisible vessels associated with actual endovascular clot retrieval, particularly for beginners.

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