Browsing by Author "Schmidt, Andrej"

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    One-year results from the DETOUR I trial of the PQ Bypass DETOUR System for percutaneous femoropopliteal bypass
    (2020) Krievins, Dainis K.; Halena, Grzegorz; Scheinert, Dierk; Savlovskis, Janis; Szopinski, Piotr; Kraemer, Albrecht; Ouriel, Kenneth; Nair, Kasthuri; Holden, Andrew; Schmidt, Andrej
    Objective: The objective of this study was to evaluate the 1-year safety and effectiveness outcomes associated with the PQ Bypass DETOUR System (PQ Bypass, Milpitas, Calif) for the percutaneous bypass of long-segment femoropopliteal occlusive disease.
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    Percutaneous Femoropopliteal Bypass: 2-Year Results of the DETOUR System
    (2022) Halena, Grzegorz; Krievins, Dainis K.; Scheinert, Dierk; Savlovskis, Janis; Szopinski, Piotr; Kramer, Albrecht; Ouriel, Kenneth; Schmidt, Andrej; Zdunek, Michal; Lyden, Sean P.
    Purpose: This study investigated the 2-year safety and effectiveness of the PQ Bypass DETOUR system as a percutaneous femoropopliteal bypass. Materials and Methods: Seventy-eight patients with 82 long-segment femoropopliteal lesions were enrolled in this prospective, single-arm, multicenter study. The DETOUR system deployed Torus stent grafts directed through a transvenous route. Eligible patients included those with lesions of >10 cm and average of 371 +/- 55 mm. Key safety endpoints included major adverse events (MAEs) and symptomatic deep venous thrombosis in the target limb. Effectiveness endpoints included primary patency defined as freedom from >= 50% stenosis, occlusion, or clinically-driven target vessel revascularization (CD-TVR), primary assisted, and secondary patency. Results: Chronic total occlusions and severe calcium occurred in 96% and 67% of lesions, respectively. Core laboratory-assessed total lesion length averaged 371 +/- 51 mm with a mean occlusion length of 159 +/- 88 mm. The rates of technical and procedural success were 96%, with satisfactory delivery and deployment of the device without in-hospital MAEs in 79/82 limbs. The MAE rate was 22.0%, with 3 unrelated deaths (4%), 12 CD-TVRs (16%), and 1 major amputation (1%). Deep venous thrombosis developed in 2.8% of target limbs, and there were no reported pulmonary emboli. Primary, assisted primary, and secondary patency rates by the Kaplan-Meier analysis were 79 +/- 5%, 79 +/- 5%, and 86 +/- 4%, respectively. Conclusions: The PQ Bypass DETOUR system is a safe and effective percutaneous alternative to femoropopliteal open bypass with favorable results through 2 years. The DETOUR system provides a durable alternative to conventional endovascular modalities and open surgery for patients with long, severely calcified, or occluded femoropopliteal lesions.
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    Preliminary Result's From a First-In-Man Study of the GRST (TM) Peripheral Catheter System For Peripheral Artery Disease
    (2008) Scheinert, Dierk; Schmidt, Andrej; Ferreira, Mariano; La Mura, Ricardo; Mertens Martin, Renato; Bergoeing Reid, Michel Paul; Margolis, James R.; Clair, Daniel; Riddle, Sharon; Blanck, Arthur G.; Koehler, Eric