Vol 3 Chapter 2328: Reprint 1 ligament?

【Military Technology】【】

"For example, in the field of medical science and technology, we have successfully developed intelligent bionic human organs, such as intelligent bionic artificial hearts, intelligent bionic electronic prosthetic eyes, and intelligent bionic electronic prosthetics, etc.

Since the development of these intelligent bionic artificial organs and tissues, they have saved the lives of thousands of patients, and successfully helped tens of thousands of physically disabled patients, allowing them to see the light again, regain their hands and feet, and be able to normal life.

For example, our breakthroughs in human cell tissue cloning and 3D bioprinting technology can help many disfigured patients regain their physical appearance, and can also help many athletes or ordinary people disabled due to ligament ruptures to resume playing on the field. return to normal life.

For example, some time ago, we accepted an excellent athlete from our country. She is a champion seedling that the national team has carefully cultivated. Whether it is a leader or a coach, they are very optimistic about her.

Unfortunately, during a training session, the ligament was torn and the injury was very serious. Under normal circumstances, immediate surgical repair is required. Even if the operation is successful, it will take a long time to resume training, but even this may not be able to return to the field. Because the damage to the injured ligament is irreversible, surgery can only try to repair it, but not make it back to its original state.

In fact, there are many such examples. Many of the outstanding athletes at home and abroad that we know have had to leave the stadium and retire due to injuries.

And now, we have a new treatment that uses 3D bioprinting to reprint a complete ligament for her. "

"Reprint a ligament?" Jiang Nan looked surprised.

Wu Hao smiled and nodded and said: "Yes, that is to re-print a ligament for her, and then implant it into her injured position to replace the torn ligament.

Although it is so simple, it is difficult to achieve this step.

First, we need to extract the somatic cells above the patient's ligaments, and then clone them. The whole process may take one week to one and a half months before we can clone and cultivate a sufficient number of cells.

We will then inject these cells into our biological 3D printer, ready for the next 3D printing.

But before printing, we need to take an MRI scan of the patient's damaged ligament, then build an accurate digital model, then modify this model, and then import it into the 3D bioprinter, which is the template it prints.

Next, we need to 3D print cells according to this template. The whole printing process is actually very simple, that is, the cells are arranged in the order of the ligament cells and then stacked layer by layer to print them out. "

"Is this successful?" Jiang Nan interjected and asked.

Wu Hao smiled and shook his head: "It's not that simple, cells like this have a limited survival time, just like our severed limb transplantation, the longest limb removed from the body can't exceed how long, once it exceeds this time , then the cells of the entire amputated limb may die, thus affecting the success rate of transplantation and the recovery of amputated limb function.

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The printed ligament tissue is also the same, and its preservation and preservation must be solved.

We know that 3D printing is a very busy process, and the same is true for bioprinting. A small ligament like this may take several days or even a week. How to ensure its survival is also a problem we need to study and solve.

At present, the medical community mainly focuses on the preservation of such transplanted organs by low temperature and injection of preservatives, but these two methods also last for tens of hours, which is not enough now.

Therefore, we can only find another way and think of a new way. We have established an artificial placenta system in the printing chamber of the 3D bioprinter. This system is like the placenta in the mother's body, which can always provide the necessary nutrients for the cells of the ligament tissue being printed and ensure their survival.

In this way, we can achieve long-term and large-scale tissue printing, so that more and larger organ tissues can be printed to treat and save more people. "

Speaking of this, Wu Hao took a sigh of relief, and then said: "At present, this athlete has undergone ligament transplantation and is observing the recovery period. If there is no problem, she can do some adaptive training next.

However, we still advise her to stop doing some high-intensity strenuous exercise, at least for now. "

"Why, hasn't the transplant operation been completed and new ligaments replaced?" Jiang Nan asked a little puzzled.

Wu Hao smiled and shook his head: "It is a new ligament, but the printed ligament is still very different from the patient's original ligament. This difference may not be obvious in ordinary people, because ordinary people People do not have such high training intensity, so the ligaments have not undergone any high-intensity stretching exercises~www.readwn.com~ So the direct gap between the old and new ligaments is not obvious.

However, it is different for athletes. The previous high-intensity training has made their ligaments stronger than normal people, so they are stronger and stronger. It is precisely because of this that high-intensity strenuous exercise that can support athletes breaking through the limits of the human body is supported.

And the new ligaments are printed without the long workouts in this area. This gap is like beef tendon, the same as beef tenderloin.

Therefore, athletes also need a longer training process after completing the ligament implant replacement surgery. And this process can't be rushed, it needs a little bit of gradual progress, and it can't be rushed. "

"But the peak of an athlete's career may only be for a few years. If this is the case, doesn't it mean that she is leaving the arena." Jiang Nan said with a hint of regret.

Wu Hao smiled and shook his head: "Not necessarily, the key depends on the athlete's hard work and determination. If she wants to persevere, as long as she wants. In theory, as long as she works tirelessly and is not injured, she is It can be restored to the state of the body before the injury.

But if the ligament transplant replacement surgery is not performed, then it means that she will no longer have the capital and conditions to work hard again. So how to choose depends on the athletes themselves, we just provide them with one more choice. "

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"I believe that the vast majority of athletes will choose to undergo this kind of surgery, because they are definitely not willing to leave the arena like this." Jiang Nan concluded with a smile at him.