Helping the protagonist to regain the ability to walk "soft robot" cool attack

It is reported that "soft robots" can not only enhance the load-bearing capacity of workers and soldiers. At the same time, these robot kits can also be used in the medical field, including helping to care for patients with Parkinson's disease, cerebral palsy and other diseases that affect mobility.

Helping the protagonist to regain the ability to walk "soft robot" cool attack

According to reports, Harvard University's Connor Walsh Laboratory is not a common research center. There are no desktop centrifuges, ventilated kitchens that can remove toxic gases, beakers or pots, test tube racks, etc., only a few laptops and A variety of clothes. On the lab side, there are many models wearing T-shirts and black running pants, and behind them are jerseys and running shoes. On another shelf, the carefully folded shorts and leggings are marked with different numbers. When I visited here recently, a student was patching the trousers.
Help the protagonist to regain the ability to walk "soft robot" cool attack

If you are walking down the street, you might think that you are in a high-end sports shop. But this is not a Nike university, but a biodesign laboratory at Harvard University. There are many eye-catching research projects, and their goal is to revolutionize the science of "soft robots." In the process, the fate of stroke patients can also be changed to help them walk again. Laboratory director Walsh said: "In essence, we are studying clothes that can provide strength to people who are suffering from mobility disorders, helping them to restore mobility."

Not long ago, at the ceremony in Los Angeles, the 35-year-old Walsh won the Rolex Award. He plans to expand the "soft robot" study with a bonus of 100,000 Swiss francs and make it into a suit to enhance the load-bearing capacity of workers and soldiers. At the same time, these robot kits can also be used in the medical field, including helping to care for patients with Parkinson's disease, cerebral palsy and other diseases that affect mobility.

Walsh graduated with a degree in Manufacturing and Mechanical Engineering from Trinity College Dublin. As early as the student days, he had read reports that the United States is developing exoskeletons to help enhance human capacity, and is obsessed with robots. In fact, the exoskeleton is a hard shell similar to a robot that wraps the user and enhances mobility, such as the steel suit worn by Robert Downey in Iron Man or the use of Sigourney Weaver in Alien. Power bones, etc.

Walsh said: "I think they look very cool!" To this end, Walsh applied to enter MIT for further study, along with biomechanics expert Hugh Hale. But when Walsh began to contact the stiff exoskeleton, he found it very unsatisfactory. He said: "It's like armor becoming a robot suit, but it's also hard, heavy, uncomfortable, and not always moving with humans."

To this end, when Walsh came to Harvard University, he set up a biodesign laboratory and decided to solve the problem in different ways. He said: "I immediately found out that if you use a softer suit, you can support you to take the right action. In addition, it is more comfortable to wear and will not bother you. It has great biomedical application value. I began to imagine : Can we make a wearable soft robot?"

The answer is yes. With the help of colleagues Terry Ellis, Louis Awad, and Ken Holt, they used electronics, mechanical engineering, materials science, and neurology to design and build walks that help walk. Ingenious equipment: soft exoskeleton set. In fact, it is to wrap someone's leg muscles with special cloth. Then use the bicycle brake line to make a pulley to connect it to the leggings, and the other end is connected to the power backpack cable on the patient's back. When you step on the foot, the power pack pulls the cable to help lift the leg. When the feet alternately walk, the other cable attached to the toe cap is tightened, helping to lift the other foot so that it does not drag on the ground.

With this method, the situation of people who can no longer control their muscles can be alleviated. They can lift their legs and it is important to keep the toes down so that they won't fall to the ground. In short, they can resume walking again. Walsh said: "Designing joints is very important when designing robotic equipment. Our equipment has only one joint and is very easy to control. In addition, we try to use lightweight materials and the equipment is easier to wear."

Initially, the pulleys used to help the wearer lift the legs use a cart-like device. Walsh and others continue to improve it, reducing the size of the power pack and making it more comfortable to wear. The suit weighs about 4.5 kilograms and Walsh hopes to further reduce weight in the future. In addition, the power pack is equipped with an IMU for analyzing the force generated by the foot movement, which in turn increases or decreases the brake line pulley. These sensors must work with millisecond accuracy.

The test has been successful, and the situation has been significantly improved when stroke patients wear a soft exoskeleton set to walk on a treadmill. After adapting to the suit, they no longer grip the clutches and armrests, and the movements are getting faster and faster. Walsh said: "We are not saying that this set is the only solution for moving obstacles, there are a variety of hard exoskeleton suits for people who are completely paralyzed. But for people who are not serious, soft robots The suit is a better choice."

Every year, there are 110,000 people in the UK who have a stroke. Although most people can survive, stroke has become the third biggest killer after heart disease and cancer. Many stroke patients tend to stay away from social activities and prefer to stay at home rather than exercise. Walsh and others hope their research can improve this situation.

Stroke patients do not need to wear a soft exoskeleton set at all times, but wear them when they need to leave home. This device can also be used for physical therapy to help patients recover their walking ability. Over time, Walsh and his team hope to bring prototypes to market within three years. The soft exoskeleton set not only helps stroke patients, but also helps patients with cerebral palsy, Alzheimer's disease, multiple sclerosis, and Parkinson's disease. Walson said: "When muscles don't produce enough power to support human walking, wearable soft robots can help them."

(Original title: "Soft Robot" will help the leader to stand up and walk)

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