When a ureteral stent fails, pressure can quietly build inside the kidney long before clinical symptoms. A new device called UroSleeve aims to enable earlier detection by turning a standard stent into a passive wireless pressure monitor via a modular sleeve. Designed as a modular sleeve rather than a redesigned implant, it fits around conventional stents and tracks intrarenal pressure through resonance shifts that can be read externally. In an ex vivo porcine kidney model, the system detected pr