People with disabilities can easily improve their lifestyle with the use of robotic limbs. The technology and the advancements in robotics have been able to help millions of patients lead a normal life, improving their condition. And new discoveries in this field seem to lead to the manufacturing of touch-sensitive limbs.

Researchers have found a way to allow a robot reach through clutter with the purpose to pick up an object efficiently. This is an amazing discovery with huge implications for robotics, as well as for the creation of touch-sensitive limbs. People have to reach different objects when moving around on daily basis. Selecting a certain item from numerous objects is also a common situation. So, the latest finding is a breakthrough on the way to make robots sensitive to touch, meaning that they can now reach objects without knocking everything down.

“Up until now, the dominant strategies for robot manipulation have discouraged contact between the robot’s arm and the world,” one of the lead researchers declared according to the Science World Report. The new approach will not avoid contact, but will actually enable “the arm to make contact with objects, people and the rest of the robot while keeping forces low,” the specialist explained.

According to researches, this is the key to delicate movements, which can be featured in robotic limbs, too, making patient lifestyle even more natural as robotic limbs will feature a sense of touch along its entire arm. Several tests have already been performed by specialists on the arm. This means that many tasks had to be completed by the arm, which was able to successfully reach objects, without creating any damage.

The robotic arm was also tested by Henry Evans, who suffers from quadriplegia. In the video below you can see how Henry was able to use the robotic arm to perform simple tasks such as pulling a blanket or whipping his face with a cloth he grabbed with the robotic arm.

The entire arm of a robot, or the entire robotic limb, has to be covered with tactile sensors made out of stretchable fabric for this technology to be functional. The future of robotics could be changed by this new discovery. The implications for robots used in search and rescue missions, as well a the one used as artificial limbs for people, are huge.

Nowadays, the numbers of people in need of artificial parts have greatly increased. More advanced methods are developed constantly to help all these people lead a normal life. In fact, advanced treatments have been able to save numerous lives.

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Who needs robotic limbs?

People can find themselves in the need of artificial body parts in a wide range of cases. For instance, patients who are suffering accidents, patients with military injuries, people who have certain birth defects, circulation problems and infections, as well as individuals diagnosed with cancer can require such medical interventions. Only in the United States the number of amputations of legs, feet and ankles has much increased in the past few years due to the growth of obesity and diabetes. Actually, we can say that limb loss is a cause of concern throughout the entire world.

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Why robotic limbs?

The first prostheses have actually been used more than 3000 years ago. Well, throughout the years, due to the high need of their usage, prostheses have started to look and function just like normal parts of the body. Advancements in robotics, electronics, but also other industries such and plastics and foam, have allowed patients to lead a normal lifestyle even though a tragic event leading to the lost of a limb occurred.

Even though robotic limbs are far from being as perfect as healthy body parts they do a great job in replacing lost limbs. With their amazing help, patients can learn once again how to lead a normal life.

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Adaptation

One of the most important things to keep in mind by patients who are submitted to a medical intervention for an artificial limb is that training is crucial. Your body may find it kind of hard to use that artificial part. An artificial limb will always require more energy than a natural one. Patients should also try to stay healthy as much as possible. A robotic limb may help them restore many abilities lost along with the natural limb, but only with hard work and intensive care.

Robotic limbs can offer independent motion, being nowadays the most advanced types of prostheses anyone can use. Patients can improve their lifestyles in a significant way with robotic limbs, so there is absolutely no reason at all you should not at least try them, if you are in such an unfortunate case yourself.

The non stop march of scientific progress gets a fresh set of legs thanks to research from the University of Arizona. Roboticists there have constructed what they call the most biologically accurate robotic legs ever.

In a study published in the Journal of Neural Engineering, the team describes the science behind the robot. As the title suggests, the advancements come mostly in the form of sensors that mimic human neurophysiology extremely accurate. The robot is able to replicate the central pattern generator, a cluster of nerve cells located in the lower back that generates rhythmic muscle signals to facilitate walking.

The robot itself is a complex creation of motors and sensors. Artificial muscles made of Kevlar straps are controlled by the motors and regulated by sensors, mainly the CPG system.

The CPG produces, and then controls these signals by gathering information from different parts of the body involved in walking, responding to the environment. This is what actually allows the people to walk without thinking about it.

Advancements in robotic walkers could more accurately model how babies learn to walk. The research could also aid in spinal-injury treatment. This is a major breakthrough in the world of robotics, thus giving people with walking disabilities a greater chance of doing the normal things.

The video presents the story of a young man named Robin, who suffered from a spreading tumor which was threatening to expand to the rest of his body from his wrist. The solution of the doctors, at that particular moment, was to amputate a part of his hand and to replace it with an electric hook. An artificial hand is the new alternative to the hook that has surfaced with the help of the technology behind robotic limbs.

The artificial hand is a more advanced means of offering a disabled person the useful limb that they need. As opposed to the hook, which only had two developing parts for grabbing objects and for various other activities, the artificial hand provides the possibility to use all the necessary elements of a real hand. It has the exact shape of the human hand and it can be controlled with the help of the arm muscles exactly like a hand would be.

Robin went through the procedure of implanting the hand, during which the doctors connected the receptors of the artificial hand with the nerves and the muscles from the rest of the young man’s arm. He is very happy with the results, as the new addition to his body not only offers him the functions that he was missing, but they also provide him with the chance to have feelings in his finger tips during tight grabs. Therefore, he was able to start a new life with the help of the artificial hand.

The field of robotic limbs is developing every day and new things are invented. One of the greatest discoveries in this field is related to robotic limb replacement.

Limb replacement includes various types of prosthetics to replace a part of the body that has been amputated or lost due to illness. Creating advanced robotic limbs is possible because scientists have discovered a lot of things related to technology and they have also understood how the brain works.

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Therefore, limb replacements are becoming more and more sophisticated, helping people have a better life. The main purpose of scientists is to develop robotic limbs that act, feel and look as the limb that they replace. The challenge is to develop robotic limbs that function as a fully operational limb. Today, most artificial limbs are controlled by muscular contractions that the patient initiates versus neuronal signals from the brain.

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But how do these artificial limbs function?

 It all starts with a thought. The patient’s brain triggers many complex reactions to make a movement happen. The brain also figures out which muscles to relax and contract and how much force is needed in order to accomplish a certain task.

The brain sends signals very fast, with lightening speed, so everything happens very fast. Unfortunately, if there is a loss of limb it means that there is also a loss of nerves that connected that limb to the brain and to the signals sent by it.

There are various types of prosthetics. The most common artificial limbs are made up of cables that are connected to an area of the body where the muscles are functioning.

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Additionally, there are also external prosthetic limbs which work with a battery powered motor. There are also many things that scientists have to discover and to improve. For that, they have to understand how to properly get the signals sent by the brain in order to interact with the artificial limb.

Fortunately, science is getting closer and closer with the development of computer chips that control a prosthesis. The process includes several stages such as:

• The information sent by the brain is evaluated by an external computer program;

• The prosthesis is programmed to mimic a patient’s natural movements;

• This information is preprogrammed into the artificial limb in order to match better with the patient’s unique way of moving through his daily activities.

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One of the limitations of these programmable limbs consists of allowing for a small number programmable modes. Nonetheless, scientists are currently making efforts to improve the system and help people have a better daily life.

Quadriplegic or paralyzed people are unable to do simple things that most of us do not think about, like reaching for a glass of water. Luckily for them, researchers are realizing how hard this must be for them, so they are constantly looking for ways to help them. It seems that help is on its way, since a tetraplegic woman has managed to move a robotic limb with just her mind.

Her name is Cathy and she suffered a stroke that left her paralyzed 15 years ago. In 2005, she received a brain implant consisting of 100 hair-thin electrodes that would help her motor cortex record the neuronal signals associated with intention to move. With just her thoughts, Cathy was able to steer a robot arm to grasp a bottle of coffee and lift it to her lips. It is really touchy to see how the woman smiled after she drank without having to be helped by other people.

Here is a video where you can see what Cathy managed to do. The video also explains how these robotic limbs work and how this medical breakthrough can significantly change the life of quadriplegic people. 

Until facing an accident that causes them to lose an arm or a leg, people do not really think about robotic limbs. These prosthesis are the future of those who have suffered amputations, so people should really understand how important they are. This is why filmmaker Daria Price decided a couple years back to make a documentary on this subject.

She made this decision after meeting a disabled young man who inspired her to look more into the robotics field. This is how Out on a Limb got to be. Out on a Limb is a fascinating yet emotional documentary about the advances made in the science of prosthetics. This intriguing science will change what losing a limb means.

Technology breakthroughs and advances in neuroscience now allow for a synergistic mix of prostethics to be created, as well as robotics and bionics. They practically go out of the lab and onto the bodies of amputees.  The documentary is sponsored by the International Documentary Association, a non-profit organization. 

Checking the video below is totally worth it, especially if you know someone who is in need of robotic limbs and prosthesis. The video is a trailer of Out of a Limb that will give you an overall idea of what the documentary is about. The video is also a cry for help, since the producer needs additional funds to complete the post-production process.

The film is close to completion, since shooting and editing are done, but the post-production phase lacks funds. Since the documentary is sponsored by the International Documentary Association, the donation you can make is tax-deductible. Remember that many people could benefit from this documentary, so you can make a difference!

In the last years, the science worked in the favor of quadriplegics. Those that could not move not even with the help of robotic limbs may soon have the possibility to undertake an intervention on their brain. This new technology will let them use their limbs. Doctor Leigh Hochberg was the leader of the study that developed it. He is a neurologist and an engineer at the same time and he developed with his team the great procedure which will completely change the lives of those that could not move. The key of success is a sensor that is implanted in the patient’s brain. According to Dr. Hochberg, this is an array of electrodes which has 4-by-4 millimeters and is taped in the motor cortex. This is the part of the brain that has the control of the movement. The sensor takes the electricity in the brain and transmits it making the neurons communicate. For this to work, a computer is necessary, too, and the patient must be in contact with it. The computer decodes the neuronal activity of the person trying to move.

The impulses that the brain of the quadriplegic person make go straight into the computer and from the computer to the limbs. The first user of this technology was a woman who suffered a stroke and for more than 15 years she was not able to move her arm. Thanks to the discovery that Dr. Hochberg and his team made she was able to pick a coffee all by herself for the first time in more than a decade. She raised the cup and brought it to her mouth and took a sip, action that made her very happy.

The great thing in the experiment is that the woman did not used her motor cortex in 15 years and this was still functional, so there are hopes for many quadriplegic people that need to use robotic limbs. Although it was a smashing success until now, the research is ongoing because the team that developed this technology hopes to find a solution for people who cannot communicate. A discovery that would help those that cannot speak would be extraordinary, so the work of Dr. Hochberg and his team’s does not stop at this point. There are high hopes that in the future his remarkable work will be life-changing for quadriplegics and for those that cannot talk.

Unfortunately, accidents can take place easily nowadays, no matter if we may be referring to car or work accidents. In many cases, people who have been under a serious or traumatic accident have to face health issues for the rest of their lives. In some situations, the disabilities can actually turn out influencing their lives for a long period of time. Luckily, with the latest advancements in technology, health issues are easier to overcome, while lifestyle can simply be improved. If a few years ago robotic limbs were believed to be a technology impossible to achieve, nowadays they are a common reality. These limbs can easily be connected to the brain, meaning that the person wearing them will have complete control over the artificial limbs.

Paralyzed people and individuals who have lost one limb can gain control over a robotic arm with their thoughts. The advanced technology on which the robotic limb is based offers patients the possibility to gain complete control on their functioning, all due to a microchip which is implanted in the brain. The microchip will be the one sending signals to the computer in the robotic limb. Even though studies on the functioning and improvements of these limbs are still continuing nowadays, it surely seems that the devices will become the most efficient ones when it comes to lifestyle improvement of all patients who have unfortunately developed a movement issue.

Robotic limbs can offer an amazing degree of independent motion, being the most advanced types of prostheses ever created by specialists. They are recommended to patients who have had to undergo a surgery to have a limb removed and naturally to everyone who had lost a limb after an accident or a tragic event. There is absolutely no way patients should imagine that their lives are over in case they have been affected by such a tragedy. Arms can easily be moved and motion controlled with the robotic limb. Naturally, this means that the prostheses will function just like a normal arm. Patients can improve their lifestyles significantly when using these highly advanced types of limbs. As they will have a great control over them through brain signals, there is absolutely no way patients should not try them. Unlike other types of prostheses, the robotic ones are so easy to handle that patients can actually forget about their deficiencies. Moreover, they can work normally, regardless of the accident patients may have been through.