Chapter 674

Ouyang Yang thought about it and put forward another suggestion.

"Maybe we can remove the dilated aneurysm, and then re link the artery end, and we can use the metal pipe to connect the short part."

Chen Qun shook his head directly.

"We don't know when the thinning aortic wall will start to expand again. Your method is correct in thinking, but completely wrong in technique."

Looking at the picture, Qi Hong went up and drew twice on the screen with her finger.

"If we remove the whole abnormal artery and shorten the ascending aorta..."

Before she finished, Yang Xiaoquan interrupted her speech directly.

"The key point of the whole operation is to have a long enough aorta to connect to the heart graft. If the lesion is removed, there is no link point for transplantation. And the metal pipe is too heavy for both hearts. "

Chen Qun thought about it and gave another answer.

"We don't need metal tubes, but we use polytetrafluoroethylene for transplantation, which can reduce the risk of aortic aneurysm. That is to say, let's do a valved aortic root replacement, which is slightly improved, and remove and replace the entire aneurysm segment. The dilation starts at the root of the aorta, leaving enough space for the implanted heart

Yang Xiaoquan stood up, looked at the young man and expressed his opposition word by word.

"The implanted catheter has a 20% to 30% chance of rupture at the suture. The risk is too high to be worth it. It's better to replace an artificial heart. "

Chen Qun continued to explain the situation with a bright smile.

"Mr. Yang, if it is a conventional suture, it may break at the suture. But if we should use a new suture method, I can make sure that the suture will not break. If you always allow me, I can do a few demonstrations on pig hearts. This kind of suture method is particularly complicated, but it can just cope with this situation. "

As soon as Yang Xiaoquan's eyes brightened and his palms waved, he came to a conclusion with heroic spirit.

"OK, then you can show me a demonstration. I'd like to know what's special about the special suture method you mentioned, and what advanced technology has been developed abroad. "

Chen Qun rubbed his forehead and said the truth with embarrassment.

"Mr. Yang, this suture method is not learned from abroad. It's a three-dimensional multi link structure designed by my girlfriend. With a little modification, it can be used to sew the heart. But I don't know how to use it. I need to practice a few times to find a suitable suture method. "

While speaking, Chen Qun takes out his mobile phone and uploads the beautiful and dreamy model structure diagram designed by Dongfang Wenxin to the screen, pointing to a part of the structure in the middle.

"Mr. Yang, you can see that the riveted state of this part of the structure is very suitable for the suture of the inner wall of the heart. As long as these lines can be seen as sutures, we can see this kind of intertwined suture way very intuitively, which can solve the problem of suture shedding. In this way, the stress point of traditional suture is divided into three parts from one edge, and the inner wall also bears part of the force, which greatly reduces the possibility of falling off and fracture. "

Yang Xiaoquan quickly took out his presbyopic glasses and looked at them carefully, but he couldn't see anything. However, he understood Chen Qun's meaning and knew that he added two circles to the inner side of the suture line. In other words, the outer muscle, which is easy to break, has two more layers of insurance, greatly reducing the risk.

He pondered and asked a question.

"It's good for you to use this method, but there's another question: how do you operate it?"

Chen Qun felt embarrassed to touch his forehead again.

"Mr. Yang, I haven't thought about it yet. However, practice a few times, should be able to find the appropriate method of operation. In order to ensure that there are not too many sutures causing damage to the heart, I will ask Xiaoxin to use the computer simulation program to calculate the stress points and link points, so as to reduce the number of sutures as much as possible and ensure that there are enough support positions. "

Yang Xiaoquan couldn't help sighing.

"The idea of your young people is different. With the development of modern science and technology, you all need to use the computer to simulate the operation and give the best answer. It seems that your visit to Hawaii is not in vain, and you have broadened your horizons. If I were a few years younger, I would go and study, too! "

Where is this?

I didn't learn anything there!

Chen Qun murmured with disapproval, but he couldn't say it. He could just take Yang's words as the reason to cover up the existence of his system.A few hours later, Yang Xiaoquan saw the operation that Chen Qun demonstrated to him. The two hearts are also very different. The patient's heart is a 3D printed model, which is very lifelike, just as his computer picture shows. It looks very lifelike and can't be separated from the model at all. The other is a real pig heart.

Chen Qun, holding a scalpel, explains the process to Yang Xiaoquan.

"Now, I'm going to transplant the damaged part of the aorta, and then I'm going to sew the second heart up to the broken end of the aorta. Zhao Xue, give me 3-0 Prolene suture! "

As he said, he began to move the plastic catheter close to the 3D heart with the surgical forceps. With a little force, he saw a gap in the blood vessel wall on the heart, and the red liquid simulating blood immediately flowed out.

"Damn, give me the gauze. I'll stop the bleeding right away. The aortic wall is thinner than paper. It's like stitching toilet paper. It can't be transplanted. We need to replace the whole ascending aorta, not just one segment. We need to make a brand new aorta out of polytetrafluoroethylene

Yang Xiaoquan reminded him.

"I'm afraid it's too risky. Your operation is more difficult!"

"Yang, I don't want to, but that's the case. It has the final say. There are always all kinds of accidents in the operation, and we have to be flexible. Give me three sections of Teflon tube and some single suture. Let's create a new operation

Looking at Chen Qun's high spirited appearance, Yang Koizumi knows that he really chose the right person to arrest him for this operation. When other doctors encounter this situation, they mostly give up. But Chen Qun was able to improvise and immediately created a new plan to continue the operation.

Even if it's just practice, Chen Qun is still very serious and uses a very clever method to sew the plastic catheter on the pig heart and plastic heart according to the method he just created.

Yang Xiaoquan watched the operation of the catheter on the pig heart without blinking, knowing that this was the key to the operation. If the pig heart does not fall off, it means that the real heart will not fall off. After all, this is a new suture method, with three layers inside and outside.

Chen Qun's fingers are like embroidery. It took him more than 30 minutes to sew the catheter and the pig's heart. Then he picked up the catheter and raised his hand to Qi Hong and Zhao Xue.

"Pull the heart hard to see if it will break."

With that, he closed his hands and held the pig's heart in his hands.

Qi Hong and Zhao Xue also pull the plastic pipe impolitely and pull it backwards. But Chen Qun, holding the pig's heart, did not move his palm. He saw that the pig's heart in his palm was completely deformed, but no catheter or heart was broken.

"It works. Your new stitching method is really useful. Well, this operation should be considered a success. You should practice twice more, and then formally perform the operation for the patient. "