Industrial Consultancy & Sponsored Research (IC&SR) , IIT Madras
A Walk-chair with Natural Sit to Stand Motion for Children with Disabilities
Technology Category/Market
Categories: Assistive Device, Rehabilitation Machines/Mechanical equipment
Applications: Hospitals, Healthcare
Market: In India, wheelchair market was worth USD 162.58 million in 2021 and is further projected to reach USD 302.41 million by the year 2028, exhibiting a CAGR of 9.5% during the forecast period (2022-2028).
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Problem Statement
- People with lower extremity disability, need an assistive device for their activities and mobility.
- Disable people need caregivers support to stand from sitting position & vice versa.
- For daily activities, they need multiple separate devices depending on their disability. Using only a walker or a chair does not fulfill the requirements of rehabilitation therapies and training. The sit to stand mechanism on some devices restricts the motion to up and down, which is unnatural.
- Hence there is a need to adapt a device that disclosed in the present patent which eases the body movement of the user and helps in shifting positions from sit-to-stand.
Technology
The invention relates to the Walk-chair (Walker cum chair) for a person to use while walking with Walk-chair as well as while sitting in it. The sit to stand mechanism used in the Walk-chair is a double parallelogram mechanism. It comprises:
- A base wheel frame on which the sit to stand assembly, and the seat is mounted
- A pair of freely rotating wheels is joined at the front and rear ends of the wheel frame
- Castors are used in front wheels for 360 degree rotation allowing turning of the Walk-chair in both left and right direction.
Key Features/Value Proposition
- A hybrid device functions as a walker and a chair along with a proper sit to stand mechanism to avoid the usage of multiple devices.
- A proper seat with a comfortable sitting area which is an integral part of the device.
- Provide easy adjustments to set the seat height according to the need of the user.
Questions about this Technology?
Contact for Licensing
smipm-icsr@icsrpis.iitm.ac.in
ipoffice2@iitm.ac.in
Research Lab
Prof: Sujatha Srinivasan
Department of Mechanical Engineering
Intellectual Property
- IITM IDF Ref: 1950
- IN Patent No. 429769 (Granted)
Technology Readiness Level
TRL- 3/4
Proof of concept ready Stage