Quantitative Characterization of Recanalization and Distal Emboli with a Novel Thrombectomy Device. Cardiovascular and interventional radiology Chueh, J. Y., Marosfoi, M. G., Anagnostakou, V. n., Arslanian, R. A., Marks, M. P., Gounis, M. J. 2020

Abstract

The first-pass effect during mechanical thrombectomy improves clinical outcomes regardless of first-line treatment approach, but current success rates for complete clot capture with one attempt are still less than 40%. We hypothesize that the ThrombX retriever (ThrombX Medical Inc.) can better engage challenging clot models during retrieval throughout tortuous vasculature in comparison with a standard stent retriever without increasing distal emboli.Thrombectomy testing with the new retriever as compared to the Solitaire stent retriever was simulated in a vascular replica with hard and soft clot analogs to create a challenging occlusive burden. Parameters included analysis of distal emboli generated per clot type, along with the degree of recanalization (complete, partial or none) by retrieval device verified by angiography.The ThrombX device exhibited significantly higher rates of first-pass efficacy (90%) during hard clot retrieval in comparison with the control device (20%) (p?200 µm) across both device groups (p?=?0.0147), and no significant differences in numbers of distal emboli were noted between the ThrombX and Solitaire techniques.Irrespective of clot composition, use of the ThrombX retriever demonstrated high rates of complete recanalization at first pass in comparison with a state-of-the-art stent retriever and proved to be superior in the hard clot model. Preliminary data suggest that risk of distal embolization associated with the ThrombX system is comparable to that of the control device.

View details for DOI 10.1007/s00270-020-02683-3

View details for PubMedID 33179161