MUMBAI, India, July 31 -- Intellectual Property India has published a patent application (202521004029 A) filed by Tata Consultancy Services Limited on January 17, 2025, for Blood Pressure (bp) Measurement Using Magneto Rheological Fluid And Korotkoff Signal Feedback.
Inventors include Lingayat, Sushrut Suresh; Kimbahune, Sanjay Madhukar; Shinde, Sujit Raghunath; Bhavsar, Karan Rajesh; Vishwakarma, Harsh; Khandelwal, Sundeep; and Poduval, Murali.
The application for the patent was published on July 24, 2026, under issue no. 30/2026.
Abstract: ABSTRACT BLOOD PRESSURE (BP) MEASUREMENT USING MAGNETO RHEOLOGICAL FLUID AND KOROTKOFF SIGNAL FEEDBACK Cuffs for BP measurement fail to adjust to optimal pressure to observe Korotkoff sound. A smart cuff technology comprising a MR fluid at middle layer controlled by electromagnets arranged into an outer layer of the elastic cuff is provided. MR fluid under influence of active electromagnets automatically detects the shape/curves of a subject to provide clen fit on arm of a subject. The piezoelectric sensor array senses pressure exerted on arm of the subject and electromagnets actuate MR fluid in such a way that cuff takes form of the shape of the subject. A cuff inflation control system calculates and applies enough pressure to stop blood flow so that there is no excess pressure on the upper arm and artery. The system receives feedback from microphone sensor array, attached to the sleeve, and detects the blood flow if present, not exceeding the desired pressure to stop the flow of blood. [
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