MUMBAI, India, Feb. 27 -- Intellectual Property India has published a patent application (202641018103 A) filed by Srm Institute Of Science And Technology; and Easwari Engineering College, Chennai, Tamil Nadu, on Feb. 18, for 'infrared-based peripheral angiography system for non-invasive real-time vein visualization.'
Inventor(s) include Dr. K. Lalitha; Pradhyumna S; Anumitha Rengaraj; S Nehaa Lakshmi; and Nandita Biju.
The application for the patent was published on Feb. 27, under issue no. 09/2026.
According to the abstract released by the Intellectual Property India: "People who have difficulty venous access because of their deep veins and obesity and dark skin pigmentation need special techniques to perform peripheral intravenous cannulation. The study introduces an affordable infrared-based peripheral angiography system which enables continuous monitoring of veins located beneath the skin. The system analyzes how deoxygenated hemoglobin absorbs light at 850 nanometers under near-infrared (NIR) conditions. The embedded processing platform executes a real-time image processing pipeline which includes grayscale conversion and Gaussian noise filtering and Contrast-Limited Adaptive Histogram Equalization (CLAHE) and morphological operations. The skin tone evaluation tests show that the system achieves a 45% improvement in contrast-to-noise ratio (CNR) with processing times under 150 ms which enables its use in real-time clinical settings of resource-constrained environments."
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