RT Journal Article SR Electronic T1 Catheter design primer for neurointerventionalists JF Journal of NeuroInterventional Surgery JO J NeuroIntervent Surg FD BMJ Publishing Group Ltd. SP jnis-2022-019567 DO 10.1136/jnis-2022-019567 A1 Cem Bilgin A1 Jared Hutar A1 Jiahui Li A1 Oscar CastaƱo A1 Marc Ribo A1 David F Kallmes YR 2022 UL http://jnis.bmj.com/content/early/2022/12/07/jnis-2022-019567.abstract AB Neurovascular catheter technology has rapidly evolved over the past decade. While performance characteristics are well known to the practitioner, the design features of these new-generation catheters and their implications on performance metrics remain a mystery to most clinicians due to the limited number of available resources. This knowledge gap hampers informed device choices and also limits collaboration between clinicians and engineers. To aid fellow neurointerventionalists, in this primer we have summarized the basic concepts of catheter design and construction.