[Stent Retrievers and Aspiration Catheters].

ASTER and ASTER 2 trials revealed no significant difference in clinical outcomes between stent retrievers (SR) and aspiration catheters (AC) and SR and combined technique for mechanical thrombectomy. Clinically, selecting an appropriate device should be individualized based on patient characteristics, underlying pathology, and operator expertise. A comprehensive understanding of device-specific technical features is essential to achieve a personalized and effective endovascular strategy. For SRs, this includes recognizing the "sweet spots" unique to each device. For ACs, operators must consider the inner and outer diameters and select the device based on precise measurement of the narrowest segment along the access route to ensure optimal navigation and firm engagement with the thrombus. Here, we provide a comprehensive summary of the SRs and ACs available in Japan and describe our institutional approach to device selecting using representative cases treated with the combined technique.