A vein finder is a medical device designed to help healthcare providers locate veins quickly and accurately, particularly in patients with difficult-to-find veins. Using near-infrared (NIR) light technology, the device detects hemoglobin in the blood, which absorbs NIR light differently than surrounding tissue. This contrast creates a visible image of the veins on the skin’s surface, allowing clinicians to locate the best insertion sites for IVs, blood draws, or injections. Vein finders are particularly useful for children, elderly patients, and those with specific health conditions that make veins harder to detect. Compact, portable, and easy to use, these devices increase procedure success rates, reduce patient discomfort from multiple needle sticks, and improve efficiency in hospitals, clinics, and emergency care environments.