Objective: This study evaluates a reengineered intervention aimed at improving the clinical management of intravenous indwelling needles in geriatric patients, focusing on cost-efficiency within the Diagnosis-Related Group (DRG) payment framework.<br /> Methods: The intervention was assessed through a comparative study involving 387 elderly patients in the Geriatric Department of Xuanwu Hospital, between June 2021 and March 2022. The study contrasted outcomes between patients treated before and after implementing a new team-based management protocol in November 2021.<br /> Results: Findings indicate enhanced first-attempt venipuncture success, reduced consumable costs, and decreased complication rates in the post-intervention group (P < 0.001), compared to controls.<br /> Conclusion: The intervention demonstrates significant benefits in venipuncture efficiency, cost reduction, and patient safety, suggesting its potential for broader adoption in geriatric care.