medical simulator

The skin and subcutaneous tissue were carefully incised, and then the epimysium was exposed. The epimuscular membrane was bluntly ruptured, and a blood vessel with a larger diameter was carefully dug out from the popliteal fossa.

It was the popliteal artery. When he saw its diameter, Xiang Xiang took a breath instantly: "Brother Cheng, you usually do this blindly, inserting it into this artery, and then into its branches?"

Chu Hanbo also glanced at Zhou Cheng: "The technique is close to the Tao, and I didn't ask you to repeat this operation. There are auxiliary equipment, so don't waste any more time. It has been 4 minutes since you did this step."

The direction did not dare to be careless, quickly clamped the proximal end, and then opened the blood vessel with a syringe, and then slowly opened the proximal blood vessel clamp to restore the blood flow, and did not see a lot of blood breaking through the needle hole. out.

The one-way sheath tissue is then slowly placed into the popliteal artery through the special cannula tissue.In an instant, the blood that was slowly oozing out completely disappeared, which proved that the insertion of the sheath was successful.

After carefully injecting some markers so that the arteries can be roughly visualized, the surrounding meridian vessels were clamped in the direction of the opportunity, so that the developed markers would not flow back into the body's blood system.

After this, the crowd exited and the camera was re-taken.After processing by the imaging system, the general signs and directions of the blood system of the lower extremities were obtained. Among them, the place with the most abundant blood vessels is undoubtedly where the tumor tissue is located!

This is to simplify the operation and reduce the difficulty of the operation. The simplified operation plan designed by Zhou Cheng and others based on the existing equipment technology is also effective, but the process is more complicated and lengthy.

But as long as the goal is achieved, in fact, the speed of the operation can be ignored, and the operation time can be shortened by improving the proficiency.

In the process of carefully reading the film, Fang Xiang frowned: "Isn't this vascular network too rich?"

"It's no wonder that instead of precise fixed-point blockade, extensive vascular blockade is required."

Zhou Cheng said: "The habit and growth area of ​​the tumor are inherently difficult to control and cannot be repeated. Naturally, it is impossible to directly manipulate its nutrient blood vessels as prescribed for dead ones."

"Next, keep pushing the catheter in and pushing it to the appropriate position, and then continue to adjust the positioning, and then you can start the operation of the block." Zhou Cheng continued to repeat the idea of ​​the operation.

The idea is certain, but the operation is very difficult, and the direction is not required to be achieved overnight.

After finishing speaking, he looked at Yang Yifeng, who couldn't take his eyes off his eyes. His eyes seemed to be deep, but they were actually a little blurred. He looked like he hadn't had a good rest recently.

Yang Yifeng also noticed Zhou Cheng's gaze and shrank his neck.

He only hated that his hair was too short, it couldn't stop the fruits planted by Liu Shiyu.

If it wasn't for this action, Zhou Cheng wouldn't have paid attention to the neck under Yang Yifeng's old face. After watching it, Zhou Cheng cursed.

Second Olympics.

So young, but also learning how to play like others...

The direction is still trembling and constantly pushing the connecting catheter in, and then taking pictures and positioning continuously.People kept going in and out of the operating room.

Finally, after 7 minutes, Fang Xiang's forehead was so tense that he saw that the positioning pile was completed, and said: "Brother Cheng is really a pervert. can be accurately found.”

But he didn't say much, and then quickly and appropriately added a longer catheter, which entered the farther end of the catheter.

After that, the direction controlled the syringe of one of the catheters, and injected a certain amount of blocking material. It can be seen that because of the filling of the blocking material, the flow of the artery was blocked, and the lumen of the blood vessel was slightly enlarged. part.

But there are still other passages around it, so it is not completely closed.

After that, Fang Fang immediately followed the same method, and spent more than ten minutes to find and block the exit of the nourishing artery network!

Done!

"It's done!" Fang Fang happily looked at Chu Hanbo, his face full of surprise.

Chu Hanbo said: "It's been more than 20 minutes now. If Zhou Cheng came to operate, he has already completed two sets. Your half of the operation has not been completed. What can you be happy about?"

Hearing this, Xiang Xiang's face was overwhelmed by criticism, and he restrained his excitement: "Teacher Chu, why don't you come and try?"

Chu Hanbo immediately shut up!

If he had the ability of direction, he would have done it a long time ago, but he hasn't been to the clinic for a long time, so he is a little novice, and it may take a period of familiarization.

Obviously, up to now, he has not passed this familiarization period.

"Xiang Xiang, don't worry about arguing with Senior Brother Chu, you are the master now, don't let any other factors affect your state of mind and operation, continue, next step." Seeing that the situation was not right, Zhou Cheng put the topic on the right track.

Next step!

It is to fill the nutrient artery network extensively with blockages, to block the nutrient artery network blocked by bone tumors to the greatest extent, and to avoid even if a new collateral circulation is established, causing blood Again!

It's not enough to starve them to death.

This step seems simple, but it is actually difficult to operate, because at this moment, the relatively large entrances and exits of the nourishing artery network are all blocked, and the blood cannot circulate, leaving only small collateral circulation with less blood flow.

In order for the blocker to completely fill the lumen that nourishes the arterial network, most of the blood inside needs to be emptied to give way to the blocker.

This is not easy to operate.

It's easy to blow up the nourishing artery network directly. After blowing up, the operation will be GG directly.

It's not that this kind of thing has never happened before. Last time, Luo Yun used too much force during the experimental operation, and directly squeezed and exploded the blood vessels inside!

It's not a big deal if the mouse explodes, but when it actually enters the human body, if such a situation occurs, it is a very serious matter.

With Luo Yun's lessons learned from the past, he is more cautious in his direction.

I didn't dare to use force, and then I found that I seemed to have no strength, and when I pushed into the block, I had a lot of resistance.

"Don't use too much force doesn't mean don't use too much force."

"It is to continue to exert force, otherwise, after a while, the blockage will dry up and become a blind cavity, and I want to go back into the blind cavity."

Before Zhou Cheng finished speaking, Fang Xiang said, "Brother Cheng, it's frozen. It can't move anymore."

Fang Fang also tentatively used his strength, and he really saw a pushing back feeling that the syringe was blocked and the air was squeezed.

Zhou Cheng sighed: "Then there is no other way. The current blocking objects can only be of such a nature. It is almost impossible to temporarily improve the quality of blocking objects."

"You finish the operation." Unexpectedly, the direction has been prepared for so long, but it still failed, and it also fell to the place where Luo Yun operated before.

Fang Xiang hurriedly moved away from the console, and if he continued, the result would definitely be the same as the result of Luo Yun's operation last time.

At this time, Luo Yun happened to come from the outside, looking at the complicated tools on the operating table, he knew that this operation was not done by Zhou Cheng.

"How? Did it succeed?" Luo Yun turned his head and asked, shifting his gaze to Yang Yifeng.

Among these people, Yang Yifeng's operation level is the best, closest to Zhou Cheng. If it wasn't because of Yang Yifeng's recent bad condition, Luo Yun would not have become the first loser.

"Ms. Luo, this time it is the direction operation. During the blockage of the nutrient artery network, the blockage is still partially solidified. The operation is not finished." Yang Yifeng quickly explained.

Luo Yun almost understood what happened to Xiang Xiang, glanced at Zhou Cheng, and complained: "Xiao Zhou, is there something wrong with your plan?"

"This rapid clotting agent is simply not suitable for such tiny arteries."

Zhou Cheng closed his eyes and pondered for a while, Luo Yun was just asking a question, not raising an argument.

Seeing this, Chu Hanbo explained: "But when Xiao Zhou operated by himself, there was no such problem. I think it is still a matter of operating strength. Don't be afraid of failure. Since there are successful cases, they can definitely be repeated."

"Luo Yun, you can try again, and then I will try."

Chu Hanbo still didn't dare to make a move, fearing that he would be in Waterloo too. This seemingly simple operation, Zhou Cheng has simplified it to the simplest form, and there are still so many operational difficulties.

It is conceivable how difficult the operation Zhou Cheng completed by himself was.

Luo Yun said: "That won't work. We agreed to try it out one by one. Yi Feng, this time it's up to you. This is a difficult operation. You should be interested in it?"

Yang Yifeng said heartily, what the hell am I?

But seeing that Luo Yun and Chu Hanbo didn't intend to let him go, he could only bite the bullet and nodded, cursing secretly, women really affect the speed of men's drawing swords and guns.

The difference is that one is slower and one is faster.

Since he couldn't hide, Yang Yifeng said, "Then I'll try first."

All the old tricks were repeated, and soon, Yang Yifeng also came to the step where he failed in the previous direction. Yang Yifeng took a deep breath, pondered for a moment, and then said: "Zhou Cheng, there is really no trick in the pushing process. Bar?"

"Basically, it depends on the feel of the hand." Zhou Cheng will definitely not hide his secrets, but the feel of the hand can only be felt, not expressed in words.

Immediately afterwards, Yang Yifeng began to operate. With his right thumb, he pushed hard directly, and then closed his eyes slightly, feeling the blocker being injected into the blood vessel cavity.

Moreover, with Yang Yifeng's operation, it seems that there is no other sense of blockage.

Yang Yifeng opened his eyes, blinked thoughtfully, and then slightly increased the force, only to see that the blocker was injected faster!

It seems that there is no difficulty.

Fang Fang looked at Yang Yifeng inexplicably, including Luo Yun.

However, almost like Zhou Cheng, Yang Yifeng thought of a key question.

Yang Yifeng said: "The feeling of blockage does not come from the lumen of the blood vessel, but from the catheter port. If you push too hard at the beginning, the blocker will solidify at the catheter port, resulting in fluid flow. pressure, causing the catheter to seal."

"It's not a question of how to push it."

"Of course, maybe the speed of operation is also a relatively large influencing factor."

Soon, Yang Yifeng successfully pushed the blocker all over the nutrient artery layer, and after interweaving into a network, the blocker at the far end slowly began to solidify, and could no longer be pushed in.

Yang Yifeng just finished the operation. Drowsy, he re-perspectived again. Seeing that his operation was successful, he lifted his spirits a little.

"It seems that my operation this time is relatively successful." Yang Yifeng was a little amused.

Inadvertently insert willows and willows.

He originally thought that he was also unsuccessful in the operation, so he took the initiative to give way, but now it seems that he unintentionally pretended to be coercive.

These people are not ordinary people.

Luo Yun's operational talent is by no means simple. Chu Hanbo and Xiang Xiang are also very happy targets for slaps.

Because of this discovery, Luo Yun couldn't wait to start the operation of the next mouse.

Then, as expected, I discovered that in the last step of the operation, don't use too much force too quickly and slowly, otherwise there will be no phenomenon of rapid solidification of the blocker, too much is too late!

Finally, looking at the image after the operation, he also laughed: "It seems that this time the operation was successful."

"Old Chu, come and try?"

Chu Hanbo nodded, eager to try.

However, during the next operation, Chu Hanbo made a small mistake and pierced the popliteal artery!

But Chu Hanbo was also out of breath, and no one laughed at him, so the next mouse was dragged out and re-anesthetized.

Sure enough, the previous operation can be repeated!

"Almost yes, Yifeng can do it, but he found this trick so quickly?" Chu Hanbo praised Yang Yifeng once.

Yang Yifeng smiled and said, "Zhou Cheng has no experience of failure, so naturally he doesn't know where he failed when he failed."

In a word, it directly attracted the attention of the three people. The real damage of the crit was limited.

Unfortunately, Luo Yun was the first to explode the blood vessel, and then stopped in the middle of the direction. Chu Hanbo was the first time to operate at this moment, and even penetrated the blood vessel.

But the three of them ignored Yang Yifeng's yin and yang aura, and patiently asked the direction to try again.

With the previous failure experience, the direction this time is to succeed easily.

"Finally learned some key points."

"The few of us probably learned something about the blockage of the tumor nutrient artery in this mouse. In the subsequent experiments on rabbits, we should be able to learn by analogy, but the operation speed will be slower."

"You can leave for a few days now." Chu Hanbo agreed to Zhou Cheng's previous application.

Luo Yun turned his head and looked at Zhou Cheng: "Xiao Zhou, how long are you going to leave? Where are you going? I didn't hear the teacher tell me about it?"

Zhou Chengxin said, if Mr. Zeng told you everything, your current situation may be completely different, but Zhou Cheng also knows that only Chu Hanbo knows about the matter he and Mr. Zeng planned .

But his ambition was too great, so Chu Hanbo didn't have a big mouth.

"It's in Shanghai, but I won't show up in the laboratory for the next few days. After all, I'm a member of the experimental team, so I still have to ask the team leader for leave." Zhou Chengcheng deliberately found another excuse.

Luo Yun looked at Chu Hanbo: "Old Chu, in our team, it seems that asking for leave does not need to be approved?"

Luo Yun thought that Chu Hanbo was targeting Zhou Cheng because of some other matter, so he would like to point out that this kid is under my cover, so don't mess around.

Chu Hanbo immediately rolled his eyes, and took away the few mice he operated today.

Failure cases can be used as negative teaching materials to provide more realistic operational feedback to experimental data.It is also one of the data to be collected carefully.

This can be regarded as a case of operation failure, showing the consequences to other scholars.

It is also one of the efforts within the experimental group.

Zhou Chengcheng said: "Mr. Luo, Mr. Chu didn't target me. After all, in the laboratory, you still have to abide by the experimental regulations in the laboratory. There will be a report when you arrive."

Luo Yun didn't dwell on this point, and said, "Old Chu, there is a student in our laboratory who is also working on osteosarcoma. He is currently encountering some difficulties."

"I want to bring him to our research group, what's your opinion?"

"His name is Dong Yuhai, and he is a student of Professor Liu Yiping!"

Zhou Cheng is of the same generation and studied under Zeng Diwei, so he can be pulled in directly, but for Dong Yuhai, he has to go through the formal approval process.

"Let me take a look at his experimental plan and plan first. It doesn't need to be very detailed, as long as there is a general direction." When Chu Hanbo heard that he was Liu Yiping's student, he was doing business, and this laboratory belonged to him.

He has the final say on who to recruit and whether they are qualified enough.