A Prosthetic Leg Controlled By Human Thoughts

This is a bionic leg which works similar to the actions performed by a human to walk normally. When he thinks of moving his leg, an electrical signal from his brain flows to the target organ (Here to leg muscle) through the spinal code. As the amputation occurs, the nerve signal couldn't able to deliver the signal to the concerned muscle. To overcome this problem these nerve signal are redirected to the healthy tendon of the upper leg and detected with the help of electrodes placed there. There are special computer programs to decode the signals and interpret the thought of patient. There are also mechanical sensors including the accelerometer and gyroscope that collects the data and helps to control the movement of the patient. The error rate dropped drastically by incorporating these new electrodes along with the mechanical sensors. They are looking forward for making smaller, quieter , stronger and reduced error rate bionic legs.

Link to the article : http://www.livescience.com/39951-robotic-leg-thought-control.html

A Tiny Robot build by Chinese Scientists to Fight Aganist Diseases

Chinese scientist creates microbot , that can carry huge payloads of drug to the diseased parts of the body. Initially they did test on rabbit and mice. These microbot have the size of a cell and is injected to the human body without making any wounds and it's guided to the target organs wirelessly with the help of electromagnetic field. For that the microbot is coated with nickel. The major challenge in applying this in humans, is the difficulty in tracking the microbot in its journey to the target. This method can be effectively used in the case of stoke and retinal degeneration and can be treated without surgery.

 The link of the article from where I collected the information is given below.

http://www.scmp.com/news/hong-kong/article/1308876/chinese-university-scientists-build-tiny-robot-battle-human-diseases