Su Yuhang pressed the button.

The black screen of the electronic watch lit up, and Su Yuhang also noticed a very clear tightening sensation from the connection of the bionic hand.

The stump of the wrist is more tightly connected to the bionic hand.

His mother hurriedly asked how it felt.

"I don't know......" Su Yuhang was so nervous that his wrists were trembling.

The period of hospitalization has made him feel from the initial unacceptability to the current complete despair. Now Su Yuhang looked at his right arm, where he brought an avant-garde electronic watch, which just covered the bionic hand, and the imperceptible connection edge of the wrist.

Everything was like before that car accident, his right hand was intact.

It's just that now I can't detect the physical existence of my right hand.

"Now that the bionic hand is activated, you can try shaking it. Ye Qing had an extra tablet in his hand, which showed the current working parameters of the bionic hand and the information received by the sensor patch.

Su Yuhang stayed in place for more than ten seconds, and when beads of sweat appeared faintly on his forehead, he held back a sentence, "I don't know how to hold ......"

Jiang Shuya was also highly nervous, and after realizing that Su Yuhang had not been trained in professional myoelectric prosthetic operation, she hurriedly said: "Yuhang, didn't you tell me a few days ago that even though you lost your right hand, you often have a feeling of pain in your right hand in your mind?"

"This condition is called phantom limb pain, which is a kind of functional reorganization of the nerves at the end of the hand and the cerebral cortex when the right hand is suddenly lost. ”

"The pain goes away over time, but the more time passes, the more the nerve forgets about the right hand control. ”

"Astronaut, you close your eyes now, don't look at your right hand. Recall how you used to open and clench your right hand and redo it in your mind. ”

Su Yuhang hurriedly closed his eyes.

But a few seconds later, he was awakened by his mother's screams.

His right hand moved, as if unconsciously released in his sleep, and then clenched it quickly.

Of course, Su Yuhang realized that even if he was unconscious, the visually completely real picture made him burst into tears.

"It's the feeling that you keep your eyes open and keep trying. Jiang Shuya encouraged.

Young people are usually very smart, and Su Yuhang quickly mastered this technique of commanding bionic hands.

By imagining the right hand moving, the nerves and motor muscles at the end of the residual limb will naturally release movement signals. These signals are captured by the inductive patch and transcoded into digital signals that drive the bionic hand to work.

Theoretically, the shorter the time it takes to lose the right hand, the stronger the movement signal released by the residual limb.

Because at this stage, the corresponding nerves and muscles have not yet degenerated.

The bionic hand was closed one by one, and Su Yuhang's excitement at this time was even stronger than the moment he first saw Ye Qing.

His parents were in tears, and in their eyes, even if the bionic hand could only be simply closed one by one, visually, there was no trace of mechanical movement. There is no sound, and there is no sense of losing frames one by one.

They dare to guarantee that as long as they bring this bionic hand, Su Yuhang will not receive any curious glances from passers-by when he goes out.

Ye Qing was looking at the data uploaded back from the tablet the whole time, and seeing that Su Yuhang had mastered Zhang He in his right hand, he was quite satisfied and asked him to try to grab the object.

The Prosthetic Fitting Center has a wide variety of exercise items, from the most common drinking glasses, switches that require a knob, to more complex clothing buttons.

Su Yuhang staggered to the side and stretched out his bionic right hand to the water cup placed on the coffee table.

There was tea in the cup that had not been brewed for a long time, and the bionic hand also grasped the cup steadily. The cup was down, his confidence was greatly boosted, and he reached for a very common air conditioner knob switch.

Unexpectedly, the limitations of the sensor patch appeared.

He wanted to stick out his thumb, thumb, and forefinger and pinch the knob. It can be translated into an actual action, which is indeed the action of grabbing a water cup, and the bionic right hand is open and grips the knob.

Su Yuhang tried again, and then stood in place.

"This action can be done. Jiang Shuya walked around behind him and said softly: "In the case of Ottobock's product, it can do more than 30 different finger linkage actions, corresponding to seven main gesture functions. ”

"For example, before twisting the knob, the user has to tap the little thumb and ring finger with their left hand. These two fingers, in the subsequent movement, will not be involved. ”

"The one you bring with you now may not have added this function. ”

Su Yuhang didn't know what he was thinking, and was a little distracted.

Ye Qing looked at the data on the screen and frowned and thought.

The bionic hand, made up of hot neurons, is of course ten times more advanced than Ottobock's mechanical movement. However, with the same sensor patch technology, no matter how advanced the bionic hand is, it can only make the same movements as the latter on the patient.

Of course, this is not what Ye Qing wants.

Inside these bionic hands, various miniature sensor technologies transplanted from the Watchman X-type robot are integrated.

Ottoborck has always liked to boast about its own three-dimensional force sensors, but in the bionic hands of Behemoth Industries, the six-dimensional force sensors are only a very low-level configuration.

The problem is that these configurations don't help users make the poses they want.

Ye Qing waved his hand at Jiang Shuya, who asked why?

"I think the problem is with the sensor patch. ”

Ye Qing pointed to the data that had just been collected on the screen, "Just now Yuhang wanted to make a three-finger knob pinching action, obviously the bioelectric signal released by the muscles and nerves was different from the signal when he wanted to hold the object. The sensorable patch still treats it as simple as opening your hand and holding it again. ”

"It's complicated, it can't handle it. Jiang Shuya took a deep breath and whispered: "Grabbing objects is the function that hands use the most in life. There are some manipulators worth thousands of yuan in China, which only have this function. ”

"Ottobock is mainly advanced in terms of sensors and function development. Its finger movements are more flexible, the wrist can be rotated, and the mechanical fingers can be touched with the other hand, activating more complex movements. ”

"Why can't you handle it?" Ye Qing interrupted: "I have removed this induction patch, and it uses metal electrodes to induce muscle movement signals. Theoretically, through signal amplification, it should be able to sense biological voltage changes of the order of microvolts. ”

"If you are afraid of signal interference from electronic devices in your life, you can completely isolate it with a shielded sports wrist brace or something else. ”

Jiang Shuya looked at Ye Qing very innocently, she didn't understand.

"You have Ottobock's technician here, let him come. ”

"Yes, but ......" Jiang Shuya quickly shook her head.

The prosthetic experimental center was originally invested and built by Ottobock, and one of the three persons in charge of it was an expatriate person from Ottobock.

But this meeting, Jiang Shuya did not inform Ottobock's side.

She was mainly worried about Ottobork's side, and when she came up, she wanted to pull Ye Qing to talk about cooperation, and then the entire hospital leaders came over in a daze.

Cooperation can be discussed at any time, but the first time they met, Jiang Shuya still hoped to spend her energy on product testing and discussion.