MUMBAI, India, Sept. 28 -- Intellectual Property India has published a patent application (202541024059 A) filed by Archana Gaur T; Sakthivadivel V; and Senthil Kumar Subramanian on March 18, 2025, for Portable And Personalized:a Digital Thermoesthesiometer For Precise Thermal Sensory Measurement.
Inventors include Archana Gaur T; Sakthivadivel V; and Senthil Kumar Subramanian.
The application for the patent was published on September 25, 2026, under issue no. 39/2026.
Abstract: The present invention provides a portable, digital thermoesthesiometer designed for precise measurement of thermal sensory responses, specifically aimed at detecting and monitoring neuropathies and other sensory disorders. An accurate assessment of thermal sensitivity is critical in diagnosing conditions such as diabetic neuropathy, multiple sclerosis, and other sensory impairments, as well as in assessing small-fiber neuropathy and other thermal sensory dysfunctions. Traditional methods of measuring thermal sensitivity often lack precision, as they are influenced by environmental factors, subjectivity, and inconsistent test procedures. The digital thermoesthesiometer overcomes these limitations by applying controlled thermal stimuli to the skin while simultaneously monitoring the skin temperature in real-time, providing a reliable, objective assessment of a patient's thermal thresholds. The device operates based on the Peltier principle, where the temperature of a surface is controlled by passing an electric current through two dissimilar metals. This enables the application of both heating and cooling stimuli to the skin with precise control over temperature changes. The device is equipped with infrared thermometers that continuously measure the skin temperature to ensure the accuracy of the thermal stimulus being applied. Additionally, a thermocouple records the exact temperature of the stimulus, provil,ling accurate data on the applied thermal environment. These real-time measurements allow the device to determine precisely the them1al thresholds at which a patient perceives sensations of warmth or cold, ensuring an objective assessment. A key feature of the invention is its user interface, which allows customization of several important test parameters, including temperature change rates, measurement repetitions, and delay intervals between stimuli. The device allows for both hot and cold tests, where the patient is asked to press a button upon perceiving the thermal stimulus. The temperature is then reversed upon activation of the button, recording the subject's response and establishing the thermal threshold for warmth or cold perception. The data collected from each test is then stored in the device's internal storage system with a capacity of up to 16 GB, providing ample space for long-term monitoring and analysis. This feature is handy for monitoring conditions like diabetic neuropathy or multiple sclerosis, where patients may experience fluctuating or progressive sensory dysfunction. The thermoesthesiometer's battery-operated design ensures portability, enabling its use in clinical settings and community-based screenings for conditions associated with sensory dysfunction.
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