MUMBAI, India, April 17 -- Intellectual Property India has published a patent application (202531096205 A) filed by Narula Institute Of Technology, Kolkata, West Bengal, on Oct. 7, 2025, for 'bionic hand with haptic sensation and thermal feedback.'
Inventor(s) include Dr. Susmita Das; Sparsho Chakraborty; Sayantan Maitra; Md Avaish Siddiqui; Mohammad Alamgir; and Rahul Raj.
The application for the patent was published on April 17, under issue no. 16/2026.
According to the abstract released by the Intellectual Property India: "A bionic arm was developed to aid individuals who have unfortunately lost their upper limb segments. The project concept is motivated by the pressing necessity to assist patients who have experienced upper limb malfunctions. The designed arm is specifically intended to be controlled artificially via myoelectric signal control. One advantage of myoelectric control for bionic arms is that the signals transmit the user's deliberate contractions to enable synergistic movement. Conversely, the current commercial version of bionic arms for precise finger control is prohibitively expensive when compared to the research prototype. Therefore, this project aims to integrate the system that uses myoelectric signals for controlling a bionic arm's movement with an additional capability of haptic feedback effectively combined. Haptic feedback is delivered by a force sensor positioned at the virtual fingertip along with a micro vibrator motor. The integration of the designed head, micro-vibration motor, and force trigger is expected to yield a system that replicates the tactile sensory feedback of a real finger. The functionality of the developed arm is thoroughly verified by issuing commands to the microcontroller and carefully monitoring the arm's movement. A series of event codes is sent to the arm, triggering movement and recorded via terminal monitor. By analyzing the list of recorded codes and the observed arm movements, the functionality of the developed arm can be ascertained as successfully programmed or not. The microcontroller's performance can be evaluated using a power analyzer. Furthermore, the functionality of the designed force sensor ring is systematically examined using a multifunctional analyzer. The visual inspection results clearly indicated that the project's objectives were fully met in developing an affordable EMG-based input system for the prosthesis with success. Regarding signal processing, the acquired input signal was successfully rectified and amplified, while the filtered raw EMG signal was obtained and calibrated to effectively achieve the motor threshold percentage necessary for the precise arm's movement with excellent signal quality. Thus, the developed myoelectric bionic arm effectively assists patients with upper limb dysfunction."
Disclaimer: Curated by HT Syndication.
