I can see the status bar

Chapter 138 Technological Progress (Part [-])
"What did Dr. Xiao Sun say? Is he still in the capital?" Professor Zhu Minhua watched Yuan Ping'an hang up the phone, and stayed silent for a while, a little strange. "Or is it that he has already returned to Ningyuan?"

Yuan Ping'an swallowed, "He said... he was right next to the patient."

"Patient?" Zhu Minhua looked surprised, "What patient? He's in the emergency room?" He turned his head and looked at Li Songzhao and Lu Xuexin who were lying on the hospital bed.

"He's by Song Hualin's side. He's the one who's going to undergo vertebral body replacement." Yuan Pingan shook his head, and the stupefied look on his face gradually faded away, replaced by shock. "According to Dr. Sun, he is next to the overturned bus."

Zhu Minhua frowned, "This guy, I really don't know whether he was lucky or a bit of a back." Instead of delving into the issue of Sun Lien's presence at the accident scene, Zhu Minhua said to Yuan Ping'an, "You go to the orthopedics department first, and have a look. The printed vertebral body condition, I will pick up the car later. You go into the operating room with the prosthesis."

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3D printing technology is becoming a hot topic of discussion in various departments of the hospital.And this upsurge of discussion is especially intense in orthopedics.Before the laser metal 3D printing technology matured, orthopedic departments, especially spinal surgery, began to use CT imaging and resin 3D printing technology for preoperative preparation and rehearsal.Orthopedic surgeons will choose to first print out the patient's vertebral body model through 3D printing technology, and then perform pre-drilling on the model.

Orthopedic surgeons need to have very good spatial imagination, so that they can form in their minds what the patient's bones and joints should look like in countless plain film scans.After building such a model, doctors are able to plan and design the operation.Especially for such a sensitive and important human body structure as the vertebral body, doctors have to deliberate repeatedly before deciding what kind of surgical plan to adopt in the end.

But no matter how experienced you are, making assumptions based only on CT or MRI images may make mistakes.Doctors are human beings, even if thousands of corresponding operations have been performed, no one can guarantee that the doctor's judgment will not go wrong next time.After all, the shape of the vertebral body is complex, and when receiving a large number of patients, the doctor's energy and concentration may be weakened.If the condition of the patient's bone is not as expected during the operation, it is likely to lead to serious consequences.

Therefore, 3D printing technology has become popular in the orthopedics departments of various top hospitals.Especially departments involving cervical spine, thoracic spine, lumbar spine, and joint surgery.As long as the patient's condition is not particularly critical, the doctors are always willing to spend a little more time printing out a model of the affected area, and then the entire department discusses the surgical plan together.

However, if it is just a model, the benefits to patients are actually relatively limited.Indeed, there are models that allow doctors to have a more comprehensive grasp of the situation, shorten operation time, reduce surgical trauma, and enhance surgical effects.But in the final analysis, it is just an auxiliary tool for doctors.However, the emergence of metal 3D printing technology has made it possible for the first time to "personalize" replacement parts.

The vertebral body fixation bodies commonly seen in the market today are basically general-purpose models.The human spine is composed of three parts, and there are three natural curvatures.This results in a completely different shape for each vertebral body.Although the universal fixed body is convenient to manufacture, there are countless troubles in actual use.If it is too long or too short, it is considered a minor problem - orthopedic surgeons have electric grinders and electric saws in their hands, and if it is not possible, they can use tools to modify the fixed body.But the real trouble lies in the cervical spine, especially when it comes to the C1 to C4 cervical vertebrae. The C1 and C2 cervical vertebrae are the atlas and axis.Both vertebral bodies are short in length and complex in shape.In addition to connecting and supporting the rotation of the skull, it is also necessary to ensure that the medulla and spine in the spinal canal are not compressed.

Before the advent of 3D metal printing technology, if the patient suffered from severe atlantoaxial fractures, or suffered from occipital chordoma.Then the doctors can only use screws and brackets to screw the cut medical titanium mesh on the front and rear sides of the damaged and fragile atlantoaxial spine during the operation, and then pray that they have completely cleaned up the tumor, and pray that the patient will have a better life in the future. There will be no loose screws or brackets in life.

The loosening of the stent may cause the deformation of the hard titanium mesh, which may squeeze into the patient's esophagus, trachea, and even the carotid artery.If you don't come to the hospital for reexamination frequently, the deformation this time may directly kill the patient.Once the tumor recurs, the new tumor is likely to continue to erode the remaining atlantoaxial vertebrae.Even with the support of titanium mesh, without the vertebral body, the nerves and blood vessels cannot be supported and protected, and the patient will still die.

The caudal medulla is an extension of the cerebellum and the starting point of the spine.It mainly regulates and controls the heartbeat, blood pressure, breathing, digestion and other important functions of the human body. Once there is a slight damage, the patient will die directly, and there is no chance of rescue.Therefore, this area is often referred to as the "forbidden zone of life".As long as the doctors who perform the surgery have a choice, they will basically not consider performing surgery here-the risk is too great.

However, Song Hualin's situation is quite special.After the emergency doctor of the Tongxie inquired about his information in the case database, he quickly called several experts in the orthopedics department for consultation—these are all industry leaders who can write textbooks and formulate diagnosis and treatment guidelines.And these experts frowned after seeing Song Hualin's imaging examination data and operation records 15 years ago.

In fact, the person who operated on Song Hualin was also a top figure in the orthopedics department of the Tongxie.For the same removal of chordoma, doctors in other hospitals may consider directly performing a hemisection of the axis, but Tongxie’s surgical plan is to remove the eroded spine through spinal endoscopy and electric grinding during the removal of chordoma. axis and filled with bone cement.

Thanks to this surgical plan, although nearly 30% of the bone in Song Hualin's axis was removed, it still maintained its strength to a certain extent.If it wasn't for this surgical plan, Song Hualin would probably have died on the spot when the bus overturned.

"It can only be replaced." After a long silence, Academician Qiu, director of the orthopedics department of the Association, put forward his own opinion. "Although I don't know the patient's current fracture situation, it is unrealistic to fix 30% of the axis vertebrae that have been worn away." He turned to look at his student, and Professor Wang Yifei, the current deputy director of the Department of Orthopedics, asked, "You What happened to the 3D printing technology? Can it be used?"

"The second phase of the clinical trial is not over yet." Professor Wang replied, "But our 3D printing is mainly for repairing the hip joint and pelvis. Go directly to the axis..."

"I remember that Nanfang Medicine is doing this research." Academician Qiu took out the phone, "You guys sort out the original video data first, and I will ask the old friends over there if they can make a blueprint."

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Sun Lien was in the ambulance, and it didn't take long for him to arrive at Tongxie's emergency department.The place where the high-speed accident happened is only [-] kilometers away from here. Although the driver of the ambulance this time is obviously not as good as the "Brother Wang" last night, the speed is still frighteningly fast.In addition, there were police motorcycles clearing the way, and the ambulance ran through red lights continuously along the way, and rushed to the hospital at the fastest speed.

"Hurry up, send it to the emergency room!" Professor Zhu had already led someone to wait at the door to pick up the car. Seeing Sun Lien get out of the car with the emergency bed, he threw the white coat in his hand over, "Put it on, You will come to the operating room with me in a while."

Xia Hai looked at Sun Li'en with dissatisfaction on his face, "You are a doctor of the Tongxie, so you say you are from the Tongxie! Why pretend to be a doctor from other places? I won't eat you!"

Sun Li'en didn't have time to talk to this poor-mouthed doctor, so he put on a white coat, pushed the hospital bed and rushed into the emergency room.On the other hand, Song Hualin was still muttering on the bed, "Don't push so fast, there is still time."

Song Hualin's vital signs were stable. Although there was an element of luck in this, it was also inseparable from Sun Lien's emergency treatment.Sun Li'en pushed the bed into the emergency room, and after reporting the situation with the serious-looking doctors in the co-workers, he was slightly relieved.

"Why did you run onto the highway?" Seeing that the business was over, and on the way to take Song Hualin for an imaging examination, Professor Zhu Minhua finally couldn't help asking, "Aren't you here to pick someone up?"

"It's a pick-up." Sun Li'en replied with a wry smile, "I'm going to pick up Dr. Pascale's family from Hopkins. As a result, when I was walking back, I encountered this car accident. I was in the car In addition to me and Professor Pascal, there are also Rachel who came to cooperate with me to do international exchange projects, and my colleague Hu Jia. They are also very busy."

Zhu Minhua looked at Song Hualin with a change in his eyes, "I really don't know whether this patient is lucky or unlucky. Let's say it's lucky. A car accident hurt the axis. Say it's unlucky, but I met you again."

Sun Li'en didn't answer, he changed the subject, "I heard from Dr. Yuan that Tongxie plans to use 3D printed prosthesis to perform an axis replacement surgery for him?"

"The specifics depend on his fracture." Zhu Minhua nodded, "Did Ping An talk to you on the phone? This patient had undergone chordoma dissection in our place before. Look at the CT examination results, if it is If it is a Type [-] fracture, it must be replaced."

"I didn't know that the current technology can do this." Sun Lien was a little speechless, "The shape of the axis is complex, and the strength requirements are also high?"

"If it was resin or plastic printing in the past, it would definitely not work." Zhu Minhua also felt a little emotional, "When you are a doctor, you must be grateful for the progress of technology. If it were 20 years ago, no matter who was doing the surgery, This operation is no different from killing people. But now, at least we can fight for patients."

　Today's goal is the third update, this is the first update

　　
　
(End of this chapter)