Safety and Efficacy of the Extracorporeal Ventricular Assist System in Car Diogenic Shock: A Prospective, Multicenter , Single-Arm Study

Study Title: Safety and Efficacy of Extracorporeal Ventricular Assist System for Cardiogenic Shock: A Prospective, Multicenter, Single-Arm Clinical Study Objective: To evaluate the safety and efficacy of temporary mechanical circulatory support and bridge therapy with an extracorporeal ventricular assist system in patients with cardiogenic shock or weaning failure from cardiopulmonary bypass, and to comprehensively assess the device, pump head, cannulae and tubing. Pilot Phase: Clinical validation of Class III medical device. Study Design: Prospective, multicenter, single-arm target-value design. Sample Size: 40 patients. Primary Endpoint: Success rate of mechanical circulatory support. Secondary Endpoints: 30-day survival after transition to long-term therapy (VAD/transplant); 30-day cardiovascular mortality after device explantation; MACCE incidence; Mean support duration; Incidence of bleeding, thrombosis, hematologic events, acute renal/hepatic dysfunction, infection; Hemodynamic trends during support; Changes in SCr, BUN, ALT, TBIL at use, discharge and 30 days post-explantation vs baseline; Device satisfaction. Follow-up: Within 6 hours of initiation, during support, 24 hours, 7 days, 30 days post-explantation/transition, and at discharge. All clinical data were collected, managed and analyzed by an independent data and statistical center and clinical monitoring unit to support safety/efficacy evaluation and market approval.