TTK Center for Rehabilitation Research and Device Development

Indian Institute of Technology Madras


R2D2 is the TTK Center for Rehabilitation Research and Device Development at IIT Madras, headed by Prof. Sujatha Srinivasan of the Department of Mechanical Engineering. The group is involved in research related to human movement, and the design and development of rehabilitation and assistive devices for people with movement impairments.

R2D2 engineers affordable products for rehabilitation needs in India and beyond, works with clinical specialists, NGOs, hospitals, etc., to field-test the designs, and fosters a research environment to evaluate assistive device designs from biomechanical and functional standpoints.

Using appropriate technology, scientific methods and innovative translational models, R2D2 aims to enable easy accessibility and affordability of assistive devices and rehabilitation resources. R2D2 has successfully transferred technology to like-minded industrial partners including its startup, NeoMotion.



KADAM, India's first indigenously developed polycentric prosthetic knee joint was launched on April 8, 2022. KADAM is the fourth product to be designed and developed at our center, and now ready for mass manufacturing. News coverage of Kadam and product video.


Chairman of TTK Prestige, Mr. TT Jagannathan has been a pillar of support for R2D2. He recently visited our center and took keen interest in our projects.


The first product from R2D2 was launched on November 05, 2019 in collaboration with industry partner, Phoenix Medical Systems. The Standing Wheelchair, named Arise, was launched at IITM Research Park by the Hon'ble Union Minister of Social Justice and Empowerment, Shri Thaawarchand Gehlot.

Star Performer of the Quarter

Congratulations Bala!

Your ability to translate your research thinking into product development is truly remarkable. The leadership and mentoring of your new team, your overall principle of sharing knowledge with everyone at our center and looking out for your colleagues is highly appreciated. We are glad to have you at R2D2!

Dr. T M Balaram Krishnan, Post Doctoral Researcher writes on

Computational Approach: A Potential Avenue for Effective Product Design

Product design is an exciting venture for an engineer. To bear witness to a design that may have been a part of imagination at a certain point in time which would later become a functional product appreciated by the users is an enticing aspect...

Empower 2022 @ IIT Madras Research Park

July 26, 2022: The Empower 2022, India's premier Assistive technology conference is coming to IIT Madras research park this year. To submit research papers, participate in design challenges and to display your devices, check out:

January 20, 2022: Wheelchair developed at R2D2, IIT-Madras used for breaking Guinness record. Kamal Kanta Nayak, a youth from Odisha, completed a 213-km run on his manual wheelchair at Bhubaneswar by using NeoFly wheelchair. Read More

August 20, 2021: R2D2 wins the 'Best Assistive Technology Initiative Among Educational Institutes' by Assistech Foundation (ATF). We are very proud of our team and the work they do - well done team!

The third edition of the AT Makeathon was held during Shaastra 2022. Congratulations to the winners - Extent Theory (1st), We Moove (2nd), Team Delight (joint 3rd), Team DHK (joint 3rd), and special mention Trinary Pair! Thanks to all the teams who participated, and we hope to see you back next year!

Indian Patent No. 376689 (September 20, 2021): Easy to Use Portable Standing Wheelchair With Safety Feature and for Outdoor Use (Vivek Sarda, Swostik Dash and Sujatha Srinivasan). Indian Patent Application No. 201741019125 filed 31 May 2017

Indian Patent No. 368005 (May 30, 2021): Hybrid Manual Electric Wheelchair (Sripriya Kalidoss, Karthikeyan SD, Vivek Sarda and Sujatha Srinivasan).