Robotic Devices Providing Home-Care Rehabilitation (w/ Video)

November 13, 2009 by John Messina weblog
AKROD knee device from Northeastern University was designed to help a patient regain motor function after a stroke. The device is much smaller than similar systems currently in use. Credit: Biomedical Mechatronics Laboratory, Northeastern University

(PhysOrg.com) -- A group of researchers, at Northeastern University, have developed several portable robotic devices to aid in the rehabilitation process of stroke victims. These devices are small enough for patients to continue rehabilitation at home, thereby cutting down on the number of visits to the rehab center.

According to the National Stroke Association, stroke is the leading cause of disability in the US. Over two-thirds of stroke survivors are left with some form of disability. This has led researchers to develop robotic devices that can provide forces to a patient's arms, hands, legs, or pelvis. By using such devices, researchers hope that smoother motion would help measure patients' progress more precisely and provide greater comfort during rehab.

This video is not supported by your browser at this time.
MRI compatible variable resistance hand rehabilitation device. Video (c) Constantinos Mavroidis, Northeastern University

Researchers have developed devices for the wrist, knee, ankle, and pelvis that are portable and inexpensive to rent from centers and can be taken home.

By using a substance called electro-rheological fluid the resistance of the is increased whenever an is applied. By using this fluid the size of the mechanical components can be kept small. Besides the smaller size and the reduce weight, the fluid-based motors give the patient a smoother motion.

Northeastern University has developed an active knee rehabilitation orthotic device, called AKROD that uses rheological fluid as a brake. The AKROD device is made up of two lightweight circular braces above and below the knee. The fluid brake, gears and are positioned alongside the knee.

Credit: Biomedical Mechatronics Laboratory, Northeastern University

A rehabilitation device for the hand that's made of a gripper handle connected to gears and sensors has also been tested. This device is driven by two actuators and utilizes the electro-rheological fluid to increase or decrease the resistance in the patient's hand as they navigate through a video game maze. A version has also been created that can be used in an MRI to image the brain as the patient is performing the hand exercises.

All the devices still need to go through clinical trials before they can become available to the public. Home-care rehabilitation, using these robotic devices, can help not just people recovering from a but also other conditions such as cerebral palsy or a degenerative muscle disease.

This video is not supported by your browser at this time.
Robotic Hand Rehabilitation System. Video (c) Constantinos Mavroidis, Northeastern University

More Information:
New York Presbyterian
Active Knee Rehabilitation Orthotic Devices (AKROD)

Via: Technology Review

© 2009 PhysOrg.com

Explore further: USING “SMART FLUIDS” TO RETRAIN MUSCLES

Related Stories

USING “SMART FLUIDS” TO RETRAIN MUSCLES

May 26, 2004

(5-20-04) Boston, Mass. -- Physical rehabilitation has traditionally consisted of arduously retraining the body on weight machines and other resistance devices, but with the growing interest in “smart fluids,” Northeastern ...

Sony to Bring 3D Home in 2010

September 3, 2009

At a press conference held in Berlin, Germany on the eve of IFA 2009, Sony Corporation announced plans to lead the way in delivering new 3D viewing experiences by bringing 3D to the home in 2010.

Recommended for you

Facebook ready to test giant drone for Internet service

July 30, 2015

Facebook says it will begin test flights later this year for a solar-powered drone with a wingspan as big as a Boeing 737, in the next stage of its campaign to deliver Internet connectivity to remote parts of the world.

0 comments

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.