After an in-depth conversation, the three of them quickly settled on their cooperation.
The patents of the three new materials will be authorized for use by important national institutions such as the Navy, Aerospace, and Iron and Steel Research Institute, and reasonable patent fees will be collected every year.
In addition to military sonar systems, this new material can also be used for rocket fuel regulation and control, space station and satellite control, etc., and can effectively improve the level of technical equipment in the fields of national defense and aerospace.
Because the technology is too advanced, in order to keep it confidential, except for Sanqing's own products, it cannot be used in the civilian field for the time being, and exports are prohibited.
This is because Sanqing’s ultrasonic scalpels are all medical equipment, and its main customers are major public hospitals in China.
So there is no need to count on overseas customers.
Of course, in return, as long as Sanqing's ultrasonic scalpel meets national standards, it will be no worse than Johnson & Johnson's.
Major hospitals will open their doors to it and purchase it as the best choice.
This is equivalent to the state personally bringing the goods, and the support is not small.
In this way, when Sanqing's ultrasonic scalpel is officially launched, the complete localization of ultrasonic scalpel equipment will not be a problem.
Wei Kang was quite satisfied with this. When he came up with various black technologies, he was already prepared.
China's medical industry is quite special, completely different from industries such as electronic products.
All medical resources are publicly owned. To develop and grow in the pharmaceutical and device fields, they must be deeply tied to the state.
As long as he can achieve his goal and does not suffer much loss in terms of interests, these confidentiality measures are acceptable.
After a few years, the independent application of new materials will form an international advantage, and the ban will inevitably be lifted and entered into the civilian field.
By then, his ultrasonic scalpel will have completely occupied the domestic market, and he will be able to fully attack the overseas market.
****
At the same time, Wang Dali also rushed back to the company with several samples of new materials.
The entire R&D team immediately threw themselves into the work and quickly assembled the key parts of the ultrasonic scalpel, the transducer and the blade, and conducted load characteristic testing.
"Boss, this magnetostrictive transducer is really awesome, much better than the piezoelectric ceramic electrostrictive transducer." The test engineer said ecstatically.
"Not only is the power dozens of times more powerful, but the accuracy is also greatly improved, and the amplitude range is wide. You only need to adjust the power, and a knife can be switched between a bone knife and a cutting and hemostatic knife at will."
He held a simple handle in his hand. The front of the handle was connected to a titanium alloy cutter head through a horn, and an ultrasonic transducer was inserted into the back and connected to a high-power motor.
Wang Dali nodded silently, took the ultrasonic scalpel, and tried to operate it, but soon frowned.
"Why does this handle feel a little hot?"
The engineer explained: "It has been used for a long time and it is normal for it to heat up."
Wang Dali stared at the power and frequency data recorded on the screen for a while, then shook his head.
"No, the operating frequency of the blade must be consistent with the frequency of the power supply voltage, so that resonance can occur and the best surgical effect can be achieved."
"Otherwise, most of the energy will be consumed internally, causing the handle to heat up and even reduce the output amplitude of the blade, which will degrade the quality of surgery."
"But when cutting different tissues, the resonance frequency of the ultrasonic knife is different. The resonance frequency of soft tissue is very low, and the bone tissue is the highest." The engineer said.
"Then we need to continue to improve to automatically track the frequency and automatically control it to automatically maintain resonance when working, so as not to waste energy and reduce heat generation."
Wang Dali said decisively, placing the handle on the test stand.
"Okay, let's make some adjustments." The engineer nodded.
After another two weeks of careful debugging, this problem was completely solved.
Wang Dali finally breathed a sigh of relief, so when he tested again, he went to the vegetable market and bought a lot of experimental materials.
However, everyone was shocked when they looked at the neatly arranged experimental materials on the table.
"Boss, isn't it a bit wasteful for you to do this experiment?"
Engineer Xiao Du looked at the leg of lamb placed in the middle and couldn't help but swallow his saliva.
Just looking at the bright red muscle texture, the nose seemed to smell an alluring aroma of meat.
He looked back at Wang Dali and said with some reluctance.
Others also tried to persuade me, but they didn't want to be so wasteful and wasteful of food.
"Such good meat would be great in a hot pot."
"Yeah, we can't use the ultrasonic blade to cut meat, can we?"
"If you want to experiment, can't you just buy a few sheep bones?"
"It's really not necessary. It's really not possible. Just buy a chicken and get one point."
When they saw such a big leg of lamb, they immediately thought of roasted lamb leg and lamb hot pot, and their mouths watered instantly.
"Who said there are no more chickens?" Wang Dali took out a disembowelled chicken and placed it next to the leg of lamb.
"By the way, there are also offal." He slapped his forehead and took out a bag of chicken hearts and livers.
Xiao Du looked at the scene in front of him and silently took out a stack of plastic plates from the cabinet and placed them on the table.
"Boss, last time we had cake in our group, there were some plates left over, which we can use just in time."
Wang Dali suddenly laughed: "Hey, Xiao Du, are you really ready to eat barbecue?"
"What if?" Xiao Du blinked his eyes and asked, looking innocent.
"You still understand me, so I'm welcome to be the first to get started."
Wang Dali gave him an appreciative look, rolled up his sleeves, and said:
"But the data that should be recorded still needs to be recorded. Don't say I didn't remind you."
With everyone watching, he picked up the handle, installed the blade, and turned on the power.
First adjust to the 30kHz low-frequency state for cutting soft tissue.
At this frequency, the minimum amplitude of the cutter head exceeds 40 μm, which can completely transmit the mechanical effect generated by the vibration of the cutter head to the muscle tissue.
The tip of the cutter head has an angle similar to that of scissors, making it easy to cut and pinch with the handle.
Wang Dali carefully controlled the knife head and cut the lamb leg along the muscle texture.
It feels as smooth as cutting butter, and cuts a deep opening instantly without any effort.
After carefully looking at the incision, not only was the incision precise, but the surrounding blood vessels and tissues were not damaged, and the flesh remained bright red.
He smiled: "It's really sharp, really like a scalpel. I'll try lowering the frequency again."
He quickly turned the handle, adjusted the frequency to 15kHz, and stabbed into the leg of lamb again.
This time, however, he felt a resistance.
Upon closer inspection, the mutton that the blade of the knife touched was not cut, but was dented like a rubber band.
Xiao Du interrupted: "It has not reached the cutting threshold of soft tissue and cannot cut it. Let's increase the frequency."
Wang Dali laughed and said: "It seems that this is the safety threshold. If it continues to lower, it is estimated that there will be no bleeding even if the hand is cut."
As he spoke, he adjusted the frequency to below 10, then stretched out his finger and tried to slide the knife head on it.
Sure enough, not even a trace of white marks appeared.
"That's what I said." He quickly adjusted the frequency back.
Next, Wang Dali kept cutting off the fattest pieces of meat from the lamb leg without stopping.
Thanks to the instantaneous impact force generated by the mechanical vibration of the ultrasonic scalpel, the meat was quickly pulled apart in an instant and separated from the surrounding tissue without being damaged.
All in all, it's incredibly smooth.
For the first time, Wang Dali experienced the pleasure of being a cook and eating cattle.
I just held a handle and a long-handled mini scissors, and cut here and there on the lamb leg. Without any effort, I cut the meat of the entire lamb leg into pieces.
Some of the fascia that is usually easily stuck with a knife can be easily separated without any lag.
“I finally felt the thrill of being a surgeon.”
Wang Dali put down the handle, looked at the layers of meat on the plastic plate, and couldn't help but sigh.
In less than ten minutes, he had finished a large leg of lamb. The handle was still warm and showed no signs of heat.
The onlookers were dumbfounded, and everyone was full of praise.
"He is simply a surgical master, so smooth."
"The boss is a good man. He must be chopping meat at home a lot."
"You have to be very familiar with the texture and direction of muscles to be able to do it so smoothly. I definitely wouldn't be able to do it."
"I can only chop bones, haha."
"You guys, stop flattering me." Wang Dali smiled, waved his hand, and continued to adjust the frequency.
There was only a thick and long thigh bone left on the table. He had to cut the bone into several small sections before the experiment was completed.
Bone tissue is much harder than soft tissues such as muscle and fascia, and the cutting threshold is 2.5 times higher.
To cut bone tissue smoothly, the amplitude of the blade needs to be at least 100 μm.
Wang Dali set the working frequency at 70kHz and controlled the knife head to cut the sheep's thigh bone.
This time, it was like cutting a cake, cutting off the thick leg bones with ease.
Wang Dali looked at the incision carefully. It was very smooth and fine, without any cracks or damage to the remaining meat on the bones. He couldn't help but be amazed.
"With this thing, who will use a kitchen knife to chop bones in the future?"
Xiao Du chuckled at the side: "Boss, you can use an ultrasonic knife to chop the bones, but it's not necessary. Isn't this an ultrasonic cannon to kill mosquitoes? It's too big and trivial."
"This is the power of technology." Wang Dali said with a hint of obsession in his eyes, filled with emotion.
"I'll try to increase the power and see what power can achieve the effect of instantly crushing bones."
He adjusted the frequency to 100kHz and tried it once at 130kHz. He found that the higher the frequency, the more bone tissue could be completely crushed in an instant.
However, due to the excessive output power, the damage to other tissues is also greater.
Not only was the bone where it was cut completely shattered, but the marrow inside also melted into liquid and flowed out.
Wang Dali nodded and concluded: "It seems that for surgical operations, lower power must be used to achieve efficient bone cutting. Excessive output power will cause soft tissue damage."
"But it also depends on the situation. Sometimes the bone tissue only needs to be cut off, and sometimes it needs to be crushed, which requires using different working frequencies."
"Our ultrasonic scalpel has great advantages. One is the extremely high utilization of the output power of the transducer. There is not much energy loss in the process. It uses 60W of power to complete the cutting effect that can only be achieved by 80W or 120W."
"The other is that the transducer itself is very precise. Johnson & Johnson's ultrasonic osteotome has a range of several hundred microns, but our ultrasonic scalpel has a range of less than 100 microns at the same power."
"In this way, not only will it not cause fragmentation and damage to adjacent tissues, the cutting will be more precise, and it can even cut capillaries and nerve fibers and stop bleeding."
"The size of cells in the human body is basically on the micron level, the diameters of veins and arteries are on the millimeter level, and capillaries and nerve fibers are below 100 microns, so only our ultrasonic scalpel can operate on this scale."
"Johnson & Johnson's ultrasonic scalpel can only stop bleeding and coagulate veins and arteries, and its accuracy is completely inferior to ours."
"Okay, having said all that, this meat cannot be wasted. It's time to conduct the final experiment."
Wang Dali talked incessantly for a long time, and finally licked his tongue, his eyes shining with green light.
"The barbecue feast has begun."
The crowd burst into cheers instantly.
"Boss, I've been waiting for your words."
"I'm going to get some bottles of Coke."
"Boss, you must be tired after testing for so long. Let me grill you."
"Then it's up to you." Wang Dali waved his hand and sat down on the chair next to the table.
Xiao Du took the lead and adjusted the output power to the maximum.
Then he used the ultrasonic knife to tear the meat into pieces, put it on a plate and distributed it to everyone.
Soon, everyone smelled an unusually delicious aroma of barbecue.
During this process, the mechanical energy of the ultrasonic scalpel quickly destroys the proteins in the muscle tissue, causing it to coagulate and denature.
At the same time, a thermal effect is produced, and the entire piece of meat is cooked from the outside to the inside.
However, due to the relatively low thermal effect, the temperature generally does not exceed 80°C.
In this way, there is no oil smoke, no blackening, the meat is fresh and tender, the flavor is retained, and the taste is very delicious.
"It's so delicious. The low-temperature grilled texture is really unique and rare."
Wang Dali swallowed a piece of plump mutton and sighed in admiration.
Everyone else was busy grilling the meat and then immersed themselves in eating it.
There was sudden silence in the entire testing room.
All that was left was the sound of chewing, slurping, and slurping drinks.
Wang Dali was the first to eat and drink enough. He spread out his limbs, half-lying on the chair, and burped comfortably. He felt that this is the only way to live a good life.
"While eating barbecue and doing experiments, we finished the product and beat the competition."
"This is the beautiful life of a technology tycoon."
"Hahaha~" He couldn't help grinning.
"Is it really so delicious? Can I try it?" someone behind asked.
"Of course, you can do it yourself. Why, you want me to feed it to your mouth?"
Wang Dali waved his hand lazily, and suddenly felt that the voice asking the question was extremely familiar. When he turned around to look, he was instantly frightened and jumped up from his chair.
Lu Tingfeng was seen standing behind him with a straight face.
The people next to him were so frightened that they fell into silence. They all lowered their heads and remained silent.
Lu Tingfeng's eyes flashed with two cold gleams, and he shouted loudly: "Look at you, a perfectly good test room has been turned into a mess like this. It's just nonsense. What do you mean?"
Wang Dali looked sad, said nothing, and allowed the leader to scold him.
He knew that he had gone too far this time. It would be okay if he didn't catch it, but he would have to admit that he was unlucky if he did.
Lu Tingfeng's output was as fierce as a tiger's. After scolding him, he felt a little tired. He smelled the aroma of meat in the room and his nose moved involuntarily.
After looking at the tender roasted mutton on the plate, he couldn't help but reach out with his right hand, grab a piece and stuff it into his mouth.
After swallowing a mouthful of mutton, the delicious taste rushed straight to my forehead.
He was silent for a moment, and it took him a long time to say: "Forget it this time, it won't be the same next time."
(End of chapter)
