MUMBAI, India, April 17 -- Intellectual Property India has published a patent application (202641021583 A) filed by Saveetha Institute Of Medical And Technical Sciences, Chennai, Tamil Nadu, on Feb. 24, for 'closed-loop neuromuscular micro-stimulation cast liner for preventing muscle atrophy.'
Inventor(s) include Poornima S; Kotteeswaran K; and Dr. Deepak Nallaswamy Veeraiyan.
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 smart cast liner designed to prevent muscle atrophy and reduce joint stifti1ess during periods of limb immobilization following fracture management or post-operative stabilization. The device is positioned beneath a conventional cast and integrates surface electrodes, pressure/tit sensors, motion sensors, and skin-contact sensors within a flexible, breathable liner material. Embedded sensors monitor parameters such as muscle activity, limb position, pressure, and temperature. A control unit analyzes this data and automatically delivers safe, low-intensity stimulation to target muscles at programmed intervals, adjusting output based on feedback. The device enables safe isometric muscle activation without joint movement, thereby minimizing disuse atrophy and stiffness while avoiding disruption of fracture or surgical healing. The design is compatible with plaster of Paris (POP), tiberglass, and removable immobilization splints. This device aims to enhance recovery outcomes, reduce complications associated with immobilization, and decrease the need for intensive rehabilitation after cast removal."
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