The top of the coronary artery plaque rotational atherectomy catheter is a metal stainless steel drill bit inlaid with fine diamond particles.
The catheter entered the coronary artery blockage, and Zheng Ren opened the drill and grinding head.
The drilling and grinding head is welded on a long and soft spiral rotating conduit, and is driven by a gas turbine connected behind it to rotate at a high speed, with a rotation speed of 180,000 to 200,000 rpm.
When rotating at high speed, the atherosclerotic plaque can be ground into fine fragments and washed to the distal end, and the fragments can pass through the capillary bed.
There is a cavity inside the catheter for passing a 0.25cm, 300cm long guidewire.
The drive shaft is installed in a 4.3f polyethylene sheath. During operation, the sheath is pressurized to 40kpa and continuously flushed with physiological saline for cooling and lubrication.
The spots were rubbed away bit by bit, but Zheng Ren's expression did not relax, and his two thick eyebrows were furrowed.
Contrary to what I imagined, even with a master's level of interventional surgery, it is still very difficult to complete the operation.
It seems that more time will be spent on surgical training...
Although he has a "huge sum of money", Zheng Ren still uses every minute and every second of surgical training time very carefully.
God knows when all this training will come in handy.
No wonder the circulatory interventional doctors at the Karolinska Institutet in Stockholm didn’t dare to do it. Only when they got started did they realize how difficult it is.
"Pop..." Zheng Ren seemed to hear a crisp sound.
The coronary arteries were worn out...
Blood instantly filled the pericardial cavity.
If this was outside, emergency treatment would be needed down below. Open the chest and resolve cardiac tamponade.
Based on Dr. Mehar's physical condition, he could be directly declared clinically dead.
Zheng Ren was sweating on his forehead.
Surgery, failed.
Come again!
Another operation failed after five minutes.
Come again!
Zheng Ren was in the system operating room, focusing on the operation, and did not notice the passage of time in the ectopic plane at all.
In the blink of an eye, 22 consecutive days of surgical training were over.
528 hours, 31,680 minutes, boring and boring training completed in one go.
Zheng Ren was not tired, but was filled with a strange excitement.
Things that require a lot of perseverance, Zheng Ren regards as entertainment, just like playing games all night long. More than 30,000 minutes go by in the blink of an eye.
Don't eat,
Don't drink
endlessly,
Sleepless.
But the operation was still successful!
It was not an accidental success. Zheng Ren performed thirty consecutive coronary artery occlusion surgeries similar to Dr. Mehar's, and the completion rate of all surgeries was 100%.
But it's not over yet, it's just an accident, a beginning.
Because of Dr. Mehar's abnormal coagulation state, just opening the coronary artery was not enough.
Zheng Ren absolutely did not want the operation to be successful and Dr. Mehar would have to face the same problem again a few months later.
Being able to open it this time doesn't mean it will be possible next time.
The trauma of surgery, no matter how high the level, will remain. Moreover, Dr. Mehar is still aging and his body is gradually changing.
Next time, not even Zheng Ren can guarantee that the rotational atherectomy will be successful again.
Even if it is successful, it can only extend the patient's survival by a few months, and then he has to face the same situation endlessly.
Zheng Ren did not step down when the operation was 100% complete. Instead, he took out a retrievable stent and studied it.
This recyclable membrane-covered stent is commonly used clinically.
Zheng Ren rarely thought for a long time before inserting the recyclable membrane-covered stent.
The test subject's coronary artery was opened, and the remaining red color of the test subject on the system panel quickly faded.
The surgery should be over here.
But Zheng Ren didn't move. He was a little worried, worried that the big pig's hooves wouldn't understand his intentions.
However, worries are unnecessary.
With a thought, the experimental subject lay motionless in the system operating room.
It seemed like months had passed, and the stent was filled with blood clots.
This is what Zheng Ren is thinking about. Whether the patient can be considered a true success of the surgery depends on this.
He carefully opened the balloon of the retrievable stent, inserted another absorber, and set the frequency to a certain range to absorb the fallen thrombus.
The stent was removed bit by bit, very carefully. It was still very difficult to achieve a master-level surgical level.
Unfortunately, as expected, some blood clots still break off and flow into other blood vessels, causing arterial embolism.
Reflected in experimental subjects, the symptom is cerebral infarction.
Although the operation failed, Zheng Ren smiled.
It was the first time he smiled after entering the system operating room.
The idea is fine, but the method of operation needs to be improved.
That's fine, as long as there's no problem with the direction, everything is fine.
It was also continuous surgical training. Even with a master-level surgical level, Zheng Ren still had a very difficult time.
It didn’t take that long this time. After 21 hours and 44 minutes of surgical training, Zheng Ren was able to skillfully remove the covered stent that was full of blood clots. Then the steps were simple, and he just replaced a new stent.
The only problem with this new procedure is that it costs the patient more.
In a few months, a stent will be removed, and corresponding oral drugs will be taken for anticoagulation treatment.
But there is a way after all, isn't there
It took nearly 10 hours for Zheng Ren to become proficient in the two techniques before leaving the system space with a smile.
…
…
In the observation room of the ward at the Karolinska Institute of Medicine and Surgery in Stockholm, Su Yun was still fiddling with his cell phone, chatting with an unknown girl.
The professor still hasn't come back, and several doctors are still concentrating on recording every value and conducting professional analysis.
Zheng Ren knew that once the condition changed, they would press the corresponding button and find the most professional doctor to deal with Dr. Mehar.
But this had nothing to do with Zheng Ren. He smiled, leaned back on the chair.
Seeing Zheng Ren finally move, Su Yun put down the phone.
"Boss, it's no problem, right?" Su Yun didn't know where he got his confidence. He actually believed that Zheng Ren could do this kind of surgery, which was difficult even for a master-level surgery.
"No problem." Zheng Ren said.
After a pause, Zheng Ren said firmly: "No problem at all!"
"That's good." Su Yun smiled and blew, "I'll go help the professor later."
"What are you doing for him?" Zheng Ren was surprised.
"His mouth is dumber than a cotton waistband. Of course he can't win the argument. I'll help him quarrel and get this operation." Su Yun said with a smile, and it seemed that he was in a good mood.
"Well, you quarrel a lot, go ahead, I'll wait for your good news here." Zheng Ren stretched his waist and said lazily.
Su Yun's expression changed. Is Zheng Ren blaming him
I am great at talking, but not so good at surgery? !
But it doesn’t look like Zheng Ren.
Su Yun felt aggrieved... md, the human heart transplant operation must be carried out again to make this guy feel that he can't perform the operation!