I can extract side effects.

Chapter 487 Ultrasonic blade meat?
After some in-depth conversations, the three of them quickly settled on the matter of cooperation.

The patents of the three new materials will be authorized to important national institutions such as the Navy, Aerospace, and Iron and Steel Research Institute, and a reasonable patent fee will be charged every year.

In addition to military sonar systems, this new material can also be used in rocket fuel regulation and control, space station and satellite control, etc., which 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 confidential, except for Sanqing's own products, it cannot be used in the civilian field for the time being, and export is prohibited.

This is because Sanqing’s ultrasonic scalpels are all medical equipment, and its main customers are major public hospitals in China.

So overseas customers don't have to count on it.

Of course, in return, as long as Sanqing's ultrasonic scalpel meets national standards, it is no worse than Johnson & Johnson's.

Major hospitals will open their doors to it and purchase it as the most preferred option.

This is equivalent to the country bringing the goods in person, and the support is not insignificant.

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 took out all kinds of black technology, he was already prepared in his heart.

Huaxia's medical industry is quite special, completely different from industries such as electronic products.

All medical resources belong to the public. To develop and grow in the field of pharmaceuticals and equipment, it must be deeply bound with the state.

As long as his purpose can be achieved and the interests are not greatly damaged, these confidentiality measures are acceptable.

After a few years, the arbitrary application of new materials has formed an international advantage, and the ban will inevitably be lifted and entered the civilian field.

By that time, his ultrasonic knife has already occupied all the domestic market, just in time 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 devoted themselves to the work, and soon assembled the key parts of the ultrasonic knife, the transducer and the knife head, and carried out load characteristic tests.

"Boss, this magnetostrictive transducer is really awesome, much stronger than the piezoelectric ceramic electrostrictive transducer." The test engineer said ecstatically.

"Not only is the power dozens of times stronger, 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 hemostatic knife at will."

He held a crude handle in his hand, the front of the handle was connected to the titanium alloy cutter head through the horn, and the ultrasonic transducer was inserted in the rear, which was connected to a high-power motor.

Wang Dali nodded and said nothing, took the ultrasonic knife, tried to operate it, and frowned soon.

"Why does this handle feel a little hot?"

The engineer explained: "It has been used for a long time, and it is normal to generate heat."

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 cutter head must be consistent with the frequency of the power supply voltage, so as to produce resonance and have the best surgical effect."

"Otherwise, most of the energy will be consumed internally, causing the handle to heat up, and even reducing the output amplitude of the cutter head, reducing the quality of surgery."

"However, when cutting different tissues, the resonance frequency of the ultrasonic knife is different, the soft tissue is very low, and the bone tissue is the highest." The engineer said.

"Then we need to continue to improve, so as to automatically track the frequency and at the same time automatically control it so that it can automatically maintain resonance when working, so as not to waste energy and reduce heat generation."

Wang Dali said decisively, and put the handle on the test bench.

"Okay, let's adjust it again." 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 saw the experimental materials neatly placed on the table.

"Boss, isn't it a bit too wasteful for you to do this experiment?"

Engineer Xiao Du looked at a leg of lamb placed in the middle, and couldn't help swallowing.

Just looking at the bright red muscle texture, the nose seems to smell a seductive smell of meat.

He looked back at Wang Dali, and said reluctantly.

Others also tried to persuade them, they didn't want to be so reckless and waste food.

"Such good meat, what a hot pot."

"Yeah, we can't use ultrasonic blade meat?"

"If you want to experiment, can't you just buy a few sheep bones?"

"It's really unnecessary, it's really not possible, buying a chicken is enough."

Seeing such a big leg of lamb, they immediately thought of roast leg of lamb and lamb hot pot, and instantly salivated.

"Who said there are no more chickens?" Wang Dali took out a chicken that had been disemboweled and placed it next to the leg of lamb.

"By the way, there are internal organs." He slapped his forehead and took out another bag of chicken hearts and livers.

Looking at the scene in front of him, Xiao Du silently took out a stack of plastic plates from the cabinet and put them on the table.

"Boss, last time we ate cake in the group, there were some plates left over, just in time."

Wang Dali immediately laughed: "Hey, Xiao Du, are you really ready to eat barbecue?"

"Then what else?" Xiao Du asked, blinking his eyes, with an innocent look.

"If you still understand me, then I'm welcome, I'll 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 has to be recorded, don't say I didn't remind you."

Under the crowd watching, he picked up the handle, installed the knife head, and turned on the power.

First adjust to the 30kHz low frequency state for cutting soft tissue.

At this frequency, the minimum vibration 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 presents a scissor-like angle, which can be conveniently cut and picked up by the handle.

Wang Dali carefully controlled the head of the knife, and cut down on the leg of lamb along the muscle texture.

It feels as silky as cutting butter, effortlessly, and immediately cuts a deep and large gash.

Looking carefully at the incision, not only the incision was precise, but also the surrounding blood vessels and tissues were not damaged, and the flesh remained bright red.

He smiled: "Sure enough, it's very sharp, really like a scalpel, I'll try lowering the frequency again."

Quickly flipped the handle, adjusted the frequency to 15kHz, and stabbed into the leg of lamb again.

However, this time, he felt a resistance.

Looking closely, the mutton touched by the blade was not cut open, but dented like a rubber band.

Xiao Du interjected: "The cutting threshold of soft tissue has not been reached, and it cannot be cut. It is better to increase the frequency."

Wang Dali chuckled and said, "It seems that this is the safety threshold. If it continues to be lowered, it is estimated that the cut hand will not bleed."

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.

"I'll just say it." He quickly tuned the frequency back.

Next, Wang Dali did not stop for a moment, cutting off the fattest pieces of meat from the leg of lamb.

Thanks to the instantaneous impact force generated by the mechanical vibration of the ultrasonic scalpel, the flesh was quickly pulled apart and separated from the surrounding tissues without damage.

All in all, incredibly smooth.

For the first time, Wang Dali experienced the pleasure of Paodingjieniu.

Just hold a handle, hold a long-handled mini scissors, cut here and there on the leg of lamb, and cut the meat of the whole leg of lamb without any effort.

Some fascia, which are easy to get stuck with a knife, are also easily separated without any delay.

"I finally experienced the thrill of being a surgeon."

Wang Dali put down the handle, looked at the piles of meat on the plastic plate, and couldn't help sighing.

In less than 10 minutes, he finished off a big leg of lamb, and the handle was still moist without any sign of heat.

The surrounding audience were stunned, and they were full of praise.

"It's like a master of surgery, it's so smooth."

"Boss is a good man, he must chop meat at home a lot."

"You have to be very familiar with the texture and direction of the muscles to be so smooth, and I definitely can't do it."

"I can only chop bones, hehe."

"You guys, stop flattering." Wang Dali waved his hand with a smile and continued to adjust the frequency.

There was only one thick and long thigh bone left on the table at the moment, and he had to cut the bone into several small pieces before the experiment was complete.

Bone tissue is much harder than soft tissues such as muscle fascia, and the cutting threshold is 2.5 times higher.

In order to cut bone tissue smoothly, the vibration amplitude of the cutter head needs to reach at least 100 μm or more.

Wang Dali set the working frequency at 70kHz, and controlled the knife head to cut down on the sheep's thigh bone.

This time, like cutting a cake, he cut off the thick leg bones with ease.

Wang Dali took a closer look at the incision, and found that it was very smooth and fine, without any fragmentation or damage to the remaining meat on the bone, so 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, it is possible but unnecessary to chop bones with an ultrasonic knife. Isn't this an ultrasonic cannon to beat mosquitoes? It's too much to make a fuss about."

"This is the power of technology." Wang Dali said with a hint of obsession in his eyes, full of emotion.

"I'll try to increase the power to see what power can achieve the effect of crushing bones in an instant."

He adjusted the frequency to 100kHz and 130kHz and tried it once, and found that the higher the frequency, the more bone tissue can 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 place where the bone was cut completely shattered, but the bone marrow inside also melted into liquid and flowed out.

Wang Dali nodded, and concluded: "It seems that when used in surgery, a low 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 just needs to be cut off, and sometimes it needs to be crushed. This requires different working frequencies."

"Our ultrasonic knife has great advantages. One lies in the extremely high utilization of the output power of the transducer. There is not much energy loss in the middle. The cutting effect that can only be achieved with 60W and 80W is achieved with 120W power."

"The other is the high precision of the transducer itself. Johnson & Johnson's ultrasonic bone knife has a range of action of several hundred microns, but our ultrasonic knife, with the same power, has an action range of less than 100 microns."

"In this way, not only will it not cause fragmentation and damage to adjacent tissues, but the cutting will be finer, and it will even be able to cut and stop bleeding of capillaries and nerve fibers."

"The size of human cells is basically at the micron level, the diameter of veins and arteries is at the millimeter level, and the capillaries and nerve fibers are all below 100 microns, so only our ultrasonic scalpel can operate on this scale."

"The ultrasonic scalpel of Johnson & Johnson can only stop bleeding and coagulate veins and arteries, and its accuracy is completely inferior to ours."

"Okay, having said so much, the meat can't be wasted, it's time for the last step of the experiment."

Wang Dali talked on the phone for a long time, and finally licked his tongue, his eyes shone with green light.

"The barbecue feast has begun."

The crowd burst into cheers instantly.

"Boss, I'll just wait for your words."

"I'm going to get some Cokes."

"Boss, you must be tired after testing for so long, let me barbecue."

"That's up to you." Wang Dali waved his hand and sat down on the chair beside the table.

Xiao Du took the lead and adjusted the output power to the maximum.

Then, with an ultrasonic knife, he tore the piece of meat into pieces, put them on a plate, and distributed them to everyone.

Soon, everyone smelled an unusually delicious aroma of barbecue.

In this process, the mechanical energy of the ultrasonic knife quickly destroys the protein in the muscle tissue, causing it to coagulate and denature.

At the same time, a thermal effect is produced, and the whole 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 oily smoke, no burnt black, the meat is fresh and tender, the flavor is preserved, and the taste is very delicious.

"It's so delicious. The taste of low-temperature grilling is really unique and rare."

Wang Dali gulped down a piece of fat mutton, and exclaimed in admiration.

Everyone else was busy with roasting the meat, and then buried themselves in eating it.

There was a sudden silence in the entire testing room.

All that remains is the sound of chewing, smacking, and gurgling drinks.

Wang Dali was the first to eat and drink enough. He spread out his limbs, half-lyed on the chair, and burped comfortably, feeling that a good life is nothing more than this.

"Eating barbecue and doing experiments, the product is finished, and by the way, it is a competitive product."

"This is the wonderful life of a tech boss."

"Hahaha~" He couldn't help grinning silly.

"It's so delicious? Can I have a taste?" someone asked behind.

"Of course, you can do it yourself. What's the matter, let me feed it to you?"

Wang Dali waved his hand lazily, and suddenly felt that the voice of the question was very familiar. Turning his head to look, he was instantly startled and jumped up from the chair.

I saw Lu Tingfeng standing behind him with a straight face.

The people next to them were all frightened and kept silent, each of them lowered their heads and remained silent.

There were two cold lights in Lu Tingfeng's eyes, and he scolded loudly: "Look at you, a good test room has been turned into such a mess, it's just nonsense, what do you mean?"

Wang Dali wailed and said nothing, allowing the leader to scold him head and face.

He knew that this time he was a bit too much. It would be fine if he didn't catch it, but if he caught it, he could only consider himself unlucky.

Lu Tingfeng's output was as fierce as a tiger, and he was a little tired after scolding. He smelled the smell of meat in the room, and his nose couldn't help moving.

Looking at the freshly roasted mutton on the plate, he stretched out his right hand involuntarily, grabbed a piece and stuffed it into his mouth.

After swallowing a mouthful of mutton, the delicious taste rushed straight to his forehead.

He was silent for a moment, and it took him a long time to throw out a sentence: "Forget it this time, let's not make an example next time."

(End of this chapter)