I can extract side effects

Tang Jian looked in front of him excitedly.

A silver-gray bionic leg with a faint metallic luster stood firmly on the ground.

It has a structure similar to that of real legs. Due to the lack of muscles, it is much thinner than real legs, showing a sporty line beauty as a whole.

He looked at his leg, the ordinary prosthetic limb connected by a silicone socket and a steel rod, exuding a sense of cheapness from the inside out, and suddenly felt ashamed.

Under the guidance of the staff, he couldn't wait to take off his old leg and put on a new one.

Similar to the installation method of the bionic hand, the micro-nano electrode needles are first inserted into the corresponding nerves on the residual limb, carefully wrapped, and then put into the upper chamber of the bionic leg.

He noticed that at the bottom of the residual limb contact, there is a hidden honeycomb air cushion, which can evenly distribute the pressure without pulling any part of the residual limb.

Sure enough, after putting it in, it feels soft and comfortable, just like wearing a well-fitting, tailor-made high leather boot.

There is no longer the feeling of being pulled on the skin by pins when wearing ordinary prostheses, like bugs constantly biting.

The connecting component under the socket is made of titanium alloy, and there is a large hollow rubber ball below it, which allows the leg to twist 180 degrees to the left and right.

Further down is the very flexible ankle joint, which can make some natural movements with the slight vibration of the motor.

Two carbon fiber blades are curled into a hollow foot shape, which is divided in two along the position of the big toe.

This structure allows the prosthesis to cope with uneven ground, and it also means that he can wear flip-flops and walk on the streets in summer, which is very comfortable and breathable.

At the top of the foot blade is a tiny carbon fiber lever.

With each step, Tang's weight bends the foot slightly, and pushing the lever draws air out of the socket.

It can be seen that this design mimics the human foot as much as possible, which looks very cool.

Although it is still not exactly the same as the real foot, it also simulates the function of seven or eight points very well.

Unlike ordinary prosthetics, this is a prosthetic with sentience.

Of course, the main function of the legs is walking, so the main installations are pressure sensors and dynamic sensors.

No more temperature sensors or anything like that.

The result is that it can not only accept the force feedback from the ground to adjust the best angle, but also adjust the angle of the ankle joint and the strength of walking through muscle electrical signals.

After putting on the new legs, Tang Jian tried to take the first step.

First he felt his heels squeezed, and then his weight naturally pressed to the front of his feet.

Immediately afterwards, the toes began to push the body forward, and the new leg took a step forward just like this.

The whole process is very comfortable, once you take the first step, you can't stop.

After going around the testing room several times, he reluctantly stopped.

For three years, he has always found walking to be quite strenuous.

But now, as he circled the room, he felt the joy of walking again.

Tang Jian took a deep breath, his eyes turned red, and a line of hot tears almost rolled down from the corners of his eyes.

He quickly suppressed the turbulent emotions in his heart, pulled himself together, and continued the test.

Next, the test site was moved outdoors.

Walking on flat ground, walking on slopes, slow walking, fast walking, jogging, fast running, high jump, long jump, emergency stop, turning, etc., no less than dozens of movements.

After testing one by one, he found that the bionic leg was really flexible, far beyond his imagination.

The capture of muscle movement signals is very sharp. After being fed back to the nerve signals, it was a bit sluggish at first, but under the stimulation of electrical pulses, it recovered quickly.

After just two hours of training, he has thoroughly mastered the usage of the bionic leg and got used to its existence.

Whether he is standing or walking, he does not feel the existence of his legs, and completes all movements subconsciously.

It was as if this leg had always been there and belonged to him.

This kind of feeling and function is no different from real legs.

"This design is relatively simple, because the function of the legs is actually relatively simple."

Wang Dali explained: "If you want more functions, such as kicking and dancing, you need to make five toes, and let them cooperate like hands to complete more delicate operations."

"But then it would be more expensive and more complicated to make, and ordinary people don't need to play football like pros or dance ballet."

"So this basic version of the bionic leg is enough. It can run, climb mountains, and even rock climb, which can fully meet the needs of most people."

Tang Jian nodded again and again: "That's right, this leg is completely enough for me, I don't need any extra functions, it's too ungrounded."

"For us disabled people, being able to successfully climb a mountain is more important than any fancy gimmicks."

"If you really want to add functions, it's better to put them all on the bionic hands. After all, you can use more hands than legs."

Having said that, he suddenly felt a move in his heart and asked tentatively.

"By the way, Director Wang, after the test is over, what should we do with the hands and legs? Should we take them back?"

"Look at my set, the price must be very expensive, can I buy it at my own expense?"

In just one or two days, he has gotten used to life with hands and feet, and he can no longer give up.

The pair of lost hands and feet made him experience what it feels like to be a complete person.

He could no longer imagine what he would become after becoming disabled again.

Just thinking about such a scene in his mind would make him suffocate.

Wang Dali pondered for a moment, then said: "The price will definitely be expensive, but it won't be too expensive either."

Tang Jian was a little disappointed, and continued to ask: "I heard that a foreign smart bionic hand costs 200,000 yuan. Sanqing shouldn't sell it so expensive, right?"

Wang Dali chuckled and said, "Why, are you worried that you won't be able to afford it? Don't worry, it won't be that expensive. I guess it's only tens of thousands of dollars."

Tang Jian breathed a sigh of relief when he heard the words, but on second thought, he had not only lost a hand, but also a leg.

If one is tens of thousands of yuan, the two will add up to hundreds of thousands, which seems to be not too different from 200,000 yuan.

Immediately, I couldn't help but sighed: "But besides my hands, I also need legs. Two of them are expensive. I don't have a job yet, and the burden on my family is quite heavy..."

The more he spoke, the lower his voice became, and his head gradually lowered.

Wang Dali scratched his head. In fact, according to his idea, he wanted to give all the bionic hands to the patients, but the price was indeed relatively expensive, and the company had to consider the cost issue.

It is impossible to recruit dozens of testers to come and try for a month, and then send out a set of products directly.

This is completely unnecessary, because volunteers are paid for participating in the test.

Although the amount is considerable, it is still a bit far behind the price of bionic hands.

Moreover, this is different from products such as artificial hearts. Artificial hearts are life-saving things. After they are put into the patient's body, it is impossible to take them out and reuse them.

But the bionic hand is like a capsule gastroscope. After the test, it can be used by the next person without any impact on the life of the patient.

So even if the volunteers like it after using it, they can only buy it after it goes on the market.

Just like drug clinics, volunteers can only get drugs for free during the clinical period, and they have to buy them themselves if they want to continue treatment after the end.

For this situation, Wang Dali was helpless.

But he racked his brains and thought about it, and found a solution.

"It's like this, because you lost a hand and a leg at the same time, the condition is very perfect, if you are willing to assist us in the research and development of bionic hands for a long time, actively give feedback on use, and attend related exhibition activities, I should be able to help you Apply for a free slot."

Tang Jian jumped up instantly, incoherently excited: "Wow, really? Wow, that's great."

"Of course, the follow-up upgrade of the bionic hand is also very important. We need several experience officers to obtain timely feedback. Only in the long-term daily life can we have real experience and make corresponding improvements based on feedback."

"It's just that, in this case, your bionic limb will send test data on time, and you may lose some privacy."

"In addition, if you participate in the company's activities and shoot promotional materials, we will also give you money. The price will not be too high, maybe two to three thousand at a time, and you can also subsidize your daily life."

"No problem, brother, you are really my savior!" Tang Jian grabbed Wang Dali's hand and said gratefully.

As long as he thinks he can save hundreds of thousands of yuan and earn some extra money from time to time, he will agree to any conditions.

"Okay, sign the agreement with me before going back."

Tang Jian suddenly remembered his friend and said quickly: "Wait, you just said that you want to recruit several experience officers. I also know a few friends who are relatively poor and can't afford expensive ones, so I use the ones given by the Disabled Persons' Federation." Free prosthetics and food delivery every day."

"Let's see if you want to give them a chance."

He nodded and bowed, with a flattering smile on his face.

Wang Dali looked at him firmly: "Are you talking about the opportunity to test, or the opportunity to get the product for free?"

Tang Jian nodded like a chicken pecking rice: "Of course it is a chance to get a bionic hand for free."

Wang Dali thought about it seriously, and after a while he said: "It's not impossible, but we need very few experience officers, at most three, and there are strict standards."

"One is to make the family poor, and the other is to have a positive image. You know, you can't be the kind of lazy and slippery person. It is best to be self-reliant."

"The degree of disability must be relatively serious. It must be that the limbs are missing two limbs. The one that is missing a calf, which does not affect life very much. It is best to give the opportunity to those who need it more."

Tang Jian slapped his chest loudly: "Don't worry, my friends all meet these conditions."

"I have a friend who is missing two legs, and insists on delivering food every day. There are old mothers and daughters to support at home. The conditions are really hard. He can't afford two bionic legs, so I want to apply for him. one time."

"Other friends are similar, many are missing arms and legs."

Wang Dali couldn't help but said in surprise: "You guys are really Crouching Tiger, Hidden Dragon, you shouldn't underestimate them all."

He patted Tang Jian's shoulder with some emotion: "We'll talk about the experience officer later, let your friends come to test it first, try the bionic hand, and then earn a small amount of money."

"En!" Tang Jian nodded heavily, full of anticipation in his heart.

Three hours later, he left Sanqing, stepping on his sneakers, and his empty trousers became full again.

*****

A few days later, Wang Dali held a list of volunteers who participated in the test in his hand. Looking at the records on it, he couldn't help feeling a little sad.

"Almost all of them are migrant workers from rural areas. Their family conditions are already very poor, and their disabilities have aggravated their poverty."

"Even if it's food delivery, the orders they can deliver every day are much less than normal people, and their income is only half or less."

"I also often encounter complaints and bad reviews because of slow delivery. Fortunately, after knowing their disabled status, most customers quickly withdraw their complaints."

"The disabled in China are still a disadvantaged group. Basically, they cannot afford expensive prosthetics. They can only use low-end prostheses worth a few thousand yuan. Often due to improper size or battery problems, many changes and injuries are caused."

"Many people can't even afford prosthetics that cost thousands of yuan. Only after the Disabled Persons' Federation provides prosthetics for free can they come out to work when they have the ability to move."

"In this way, they are still positive, work hard, and eat with their own hands, which is really admirable."

Wang Dali recalled the conversation with these people, and he couldn't help being awed.

"They run around for a living every day, and their deposits may not even be in four digits. How can they afford to pay tens of thousands of dollars for a bionic hand?"

"However, the price cannot be reduced too low. Both the bionic hand and the bionic leg use a large number of sensors, as well as high-performance chips and alloys. The cost of hardware is very high."

"I won't lose money because there are too few customers who can afford it after it goes public."

Wang Dali couldn't help frowning, he usually seldom thinks about the selling price, but this time, the poverty of the users still made him feel shocked, and he had to think about the commercial aspect.

"Why don't you ask Mr. Wei, he will definitely find a solution that bests both worlds."

After thinking about it, Wang Dali knocked on the door of the CEO's office.

"Yo, so Dali, I saw your work report. The bionic hand has already entered the functional testing stage. It's a great job. I really didn't misread you."

Wei Kang raised his head and was surprised when he saw Wang Dali, but he soon showed a friendly smile.

Wang Dali has always been used to being straightforward, and he explained the ins and outs of the matter as soon as he sat down.

"Mr. Wei, this is probably the case. Do you think there is any way?"

"Not only can the disabled with poor conditions afford to use the bionic hand, but also can the company's sales and profits be guaranteed?"

Wei Kang looked at him in surprise: "Dali, you never considered these issues before, why did you suddenly change your gender?"

Wang Dali said with a sad face: "The main reason is to talk to some patients who participated in the test and learn about their specific conditions."

"It was only then that I realized that the target customers were so poor that they couldn't afford it after all the products had been made. This is going to kill me."

"If I knew it earlier, I would have made it simpler, lowered the cost, and lowered the price."

"Otherwise, no matter how good I do it, what's the point if customers can't afford it?"

Hearing Wang Dali's complaint, Wei Kang asked: "Then you lowered the price, can you make the same function?"

Wang Dali shook his head like a rattle: "No, the bionic leg can still be used with a low profile, but if the function of the bionic hand is poor, it will not be able to meet the requirements of daily use."

"The hardware cost is there, and so much material must be piled up to meet the functional requirements."

"This is also thanks to the fact that Sanqing is a big company, with a large purchase volume, and the cost is already low. If the quantity is small, the hardware cost and labor processing fee will be 20% more expensive."

Wei Kang smiled immediately: "That's it. It means that the bionic hand is not much cheaper. You can't make a fake product and smash the company's brand name."

Wang Dali quickly waved his hand: "I don't dare, I want to make a fake and inferior product, I will lose my face in the industry, and I will not dare to meet people when I go out in the future."

"Although the product is a bit more expensive now, whoever takes it out won't say it's awesome!"

Wei Kang chuckled and said, "That's fine. You have a conscience, kid. If you really dare to cut corners, you won't be able to pass this test."

"However, I have one of the methods you mentioned."

The corners of his mouth curled up, revealing an inscrutable smile.

"It will definitely solve the problem that the poor cannot afford high-priced bionic hands."