MUMBAI, India, Aug. 12 -- Intellectual Property India has published a patent application (202641094639 A) filed by Easwari Engineering College; and Srm Institute Of Science And Technology; Ramapuram Campus on August 05, 2026, for Tactile Feedback Control Unit Using Piezoelectric Sensors And Analog Circuits For Prosthetic Hands.
Inventors include Riya Singh; Hariharan T; Vaibhav Sharma M; Venkatachalapathy S; Febina J; and M S Sanjana.
The application for the patent was published on August 07, 2026, under issue no. 32/2026.
Abstract: The present invention discloses a low-cost haptic feedback system for non-bionic prosthetic limbs that overcomes the sensory limitations of conventional devices. The system features a piezoelectric sensor array embedded in the prosthetic hand to detect contact pressure and texture variations. An analog reflex circuit processes these signals without digital computation and drives a corresponding array of vibration actuators in the prosthetic socket. This creates a low-latency, spatially-mapped feedback loop that informs the user of grip contact and force, enabling subconscious adjustments and enhancing embodiment. The system includes a calibration interface for personalized sensitivity adjustment and operates independently of complex microprocessors, ensuring high reliability and minimal maintenance. Power is supplied by an integrated rechargeable battery with USB-C charging capability. The system is designed for affordability and simplicity, making crucial sensory feedback accessible for users of mechanical and body-powered prosthetics, thereby bridging the gap between basic and bionic prosthetic functionality Total Number of Words: 148 words
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