Evaluation of the MYNX CONTROL™ Arterial Closure System for Achieving Primary Hemostasis after Arterial Femoral Access Following Peripheral Arterial Interventions, Compared to the FemoSeal(TM) Closure System

Background: In addition to manual compression, various vascular closure devices (VCD) are available to seal the puncture site following arterial vascular procedures. Purpose: To evaluate the efficacy and safety of the extravascular MYNX CONTROL closure system for achieving primary hemostasis after femoral arterial access following peripheral arterial procedures, compared to the intravascular FemoSeal Aclosure system. Patients and Methods: A retrospective analysis of consecutive patients who underwent endovascular intervention between April and November 2022 was performed. The primary endpoint was the incidence of significant puncture site complication defined as a complication resulting in medical treatment. Secondary endpoints included peri-interventional incidence of hematoma, peri-interventional changes in hemoglobin, incidence of emergency diagnostics and predictors for closure system failure. Results: Five hundred and forty-eight patients were included in this analysis. False aneurysm occurred in 18/273 cases (6.6%) following the use of the MYNX closure system, compared to 6/275 cases after using the FemoSeal closure system (2.2%, p = 0.006). The incidence of post-interventional hematoma was not significantly different (28 (10.3%) in the MYNX group versus 32 (11.6%) in the FemoSeal group, p = 0.358). Peri-interventional hemoglobin drop did not differ between groups (p = 0.449). Emergency diagnostics were not significantly performed more often in the MYNX group (14 (5.1%) versus 8 (2.9%), p = 0.134). A post-interventional duplex sonography showed stenosis at the puncture site in one patient after use of the MYNX system. For the entire cohort, oral anticoagulation was the only predictor for the failure of the closure device (p = 0.036). Conclusions: Device failure was more common after using the extravascular MYNX CONTROL system than after using the intravascular FemoSeal system. However, the need for surgical or interventional therapy due to device failure was low.