After throwing this question, Wu Hao glanced at everyone before continuing: "First of all, the body structure of our people is actually very complicated.

Generally speaking, the main prosthetic limbs used by us people with disabilities are the limbs, which are our arms and legs.

If a person loses his legs and feet, he or she loses his or her mobility. Although we humans invented crutches and prosthetic limbs a long, long time ago, these are also to assist the tragic people in their actions. Although it can't return to normal, it's barely enough to walk.

With the development of human society, or the increasing scale of war, the research and improvement of prosthetics are also developing rapidly.

True, war is a catastrophe for humanity itself, as well as for human society. In particular, in modern times, thermal weapons warfare has caused a large number of personnel to lose their hands and feet.

The urgent need for better prosthetics for these disabled people has also led to the rapid development of prosthetic technology and prosthetic technology into the modern era.

Nowadays, ordinary prosthetics will be specially customized according to the patient's physical condition, and the ergonomic design also makes these prostheses more suitable for people with disabilities. Many of the prosthetic limbs also helped these people to get back on their feet and walk normally.

Even some high-tech prosthetics, such as the once famous 'Blade Warrior', he wears high-tech prostheses that allow him to walk as fast as he flies. And in this way, he stepped onto the sports arena and competed with many healthy athletes. ”

After walking a few steps, Wu Hao continued with a smile: "It looks very good, but this is only a prosthetic leg and foot prosthesis, and at present, these prosthetics only replace the most basic leg and foot functions of disabled people, which are far less flexible than real limbs."

Compared to the legs and feet, our hands are more flexible, which is why until now, the prosthetic limbs of the hands have been mainly immobile simulation models. The biggest effect of wearing it is not to replace the functional role of the original limb, but to cover the shame and comfort the heart.

The biggest reason for this is that compared to the legs and feet, our arms and hands are too flexible and functional.

Many technology companies and medical companies have also launched such scientific research activities to manipulate prosthetics with certain functions. But it is only a small number of water, and most of them have not left the laboratory, let alone commercial use. ”

"That's right, as we demonstrated earlier, we've built a robotic arm that is the same size as our real arms and hands, fully functional, flexible and lightweight.

You've seen the demo just now, and it's great. But is this really possible, can such a robotic arm really be installed on our disabled bodies to truly replace their disabled limb functions? ”

Wu Hao shook his head, then sighed and said, "We have solved the complex mechanical structure of the robotic arm, the super difficult motion control system, and we have also developed a super solid-state battery that can independently support its long-term operation."

But there is still a problem that cannot be solved, and that is how to attach this robotic arm, or we call it, an electronic prosthetic to a person.

To put it bluntly, it is how to let our disabled people wear and control this robotic arm. ”

Glancing at everyone, Wu Hao continued: "At present, there are many technical theories in this regard, and the most accepted and recognized by everyone is brain-computer interaction technology, which is what we commonly call thought control technology. ”

"How do we control our hands?" Wu Hao asked everyone again and again, waving his hand over and over again.

Hearing this question, the onlookers couldn't help but swing their arms to observe.

"Use your brain!" An audience member couldn't help but reply loudly.

Hehehehe...... Everyone at the scene laughed.

Wu Hao nodded with a smile and said, "That's right, it's controlled by our brains." Scientifically, it's our cerebellum that controls the movement of our body.

The part of the central nervous canal that moves, what we call the cerebellum, sends instructions down to the nerves of the spinal cord. After receiving the instructions, the spinal nerves "reply" to the instructions of the brain upwards on the one hand, and at the same time execute the instructions of the brain, controlling the motor nerves of each branch to produce movement.

Based on this theory, scientists, as well as some medical experts, have proposed three ways to control this electronic prosthesis, which can be said to bring new hope to disabled patients. ”

"Three?" Everyone looked puzzled.

Wu Hao nodded and smiled: "That's right, there are three kinds." First of all, the first is called brain-computer control technology, which is mind control.

Our human brain produces different brain waves when thinking about different things, and brain-computer control technology uses these different brain waves to achieve the purpose of control operations. At present, we already have such technology on the market, for example, a research team has shown that using brain-computer control technology to type can reach a typing speed of 70 words per minute, which is not slower than our hands at all.

There are also R&D teams that have opened up wheelchairs that are specifically controlled by mind to help patients with hyperparalysis and ALS.

So can we use this brain-computer control technology to control this robotic arm with our minds, so that as long as a short training and adaptation, this robotic arm can be worn into the user's wish to move.

The second technology is to use special sensing equipment to collect motor bioelectric signals in the spinal nerves of our cerebellar transmission tract, so as to control the robotic arm.

This means that our wearer can wear a special vest or simply attach the sensor directly to the spine of the back. This is not only beautiful, but also very convenient to match.

As for the third technique, it is to surgically connect the control nerve in the robotic arm with the nerve at the broken limb. In this way, the original nerves can control the movement of the robotic arm, isn't it sci-fi? ”

Hehehehe...... Hearing his question, everyone applauded after a chuckle, and everyone applauded while also sighing at the scientists' ingenuity.

Wu Hao waited for everyone to quiet down a little, and then said with a smile: "These three technologies are not actually opposites, on the contrary, they are suitable for different people with disabilities.

For example, the third technique can be used for the kind of semi-cut-off, as well as for patients who are partially damaged. This not only greatly reduces the cost of expenditure, but also maximizes the recovery of limb mobility.

The second technique can be used for the kind of total amputation of disabled patients, such patients cannot be surgically connected, so they need to use this technique to perform external connection.

As for the first type, it is used for those who have more severe hyperplegia or those who have suffered spinal injuries.

Of course, this classification cannot be generalized, and you still have to refer to the actual situation before choosing. ”

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