MUMBAI, India, Feb. 13 -- Intellectual Property India has published a patent application (202541124036 A) filed by Saveetha Institute Of Medical And Technical Sciences, Chennai, Tamil Nadu, on Dec. 9, 2025, for 'desingn optimization of intravenous cannula with backflow valve for improved blood flow control and safety.'
Inventor(s) include Dr Shabna S Narayanan; Dr Girimurugan; and Deepak Nallaswamy Veeraiyan.
The application for the patent was published on Feb. 13, under issue no. 07/2026.
According to the abstract released by the Intellectual Property India: "The present invention relates to an improved intravenous cannula incorporating an optimized backflow valve designed for enhanced bloodflow control and patient safety. The device comprises a catheter tube, needle, hub, and a valve assembly fabricated from biocompatible elastomers, integrated into the cannula hub to automatically permit forward infusion flow while preventing retrograde blood leakage. The invention addresses limitations of conventional IV cannulae, such as blood spillage, infection risk, and accidental air entry, by providing a low-resistance, self-sealing valve mechanism. Various embodiments include slitdiaphragm, dome-shaped, or mechanically actuated valve geometries, optimized through computational fluid dynamics (CFD) and bench testing. The invention is particularly advantageous in critical care, oncology, pediatrics, and emergency medicine, ensuring reduced contamination, improved efficiency, and greater safety in repeated venous access procedures."
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