Biocompatible near‑infrared fluorescent polymer coating that functionalizes surgical tools and markers (endoscopic clips, catheters, gauzes, implants) for real‑time fluorescence image‑guided surgery with visibility through tissue up to ~1 cm. Targets surgeons, hospitals and medical‑device manufacturers by providing a versatile, easy‑to‑apply solution to improve intraoperative visualization; roadmap includes AI‑enabled digital solutions.