Chapter 621 It's Really Aggrieved

The top of the coronary atherectomy catheter is a metal stainless steel drill bit inlaid with fine diamond particles.

The catheter entered the blocked coronary artery, and Zheng Ren opened the drill.

The drilling and grinding head is welded on a long and soft helical rotating conduit, which is driven by a gas turbine behind it to rotate at a high speed, and its speed is 180,000 to 200,000 rpm.

During its high-speed rotation, the atheromatous plaque is ground into fine debris and washed distally, and the debris can pass through the capillary bed.

There is a cavity in the catheter for passing a 0.25 cm, 300 cm long guide wire.

The drive shaft is installed in a 4.3F polyethylene sheath, and the sheath is pressurized to 40kPa during operation, and is continuously flushed with saline to cool and lubricate.

The plaque was worn away little by little, but Zheng Ren's expression did not relax, and his thick eyebrows were frowned.

It is different from what I imagined, even with a master-level interventional surgery, it is still very difficult...to complete the operation.

It seems that the surgery training time will take a little longer...

Although he had "huge sums of money", Zheng Ren still used every minute and second of his surgery training time very carefully.

God knows when these drills will come in handy.

No wonder the circulatory interventional doctors at the Karolinska Institute of Medicine and Surgery in Stockholm are afraid to do it.

"Crack..." Zheng Ren seemed to be able to hear a crisp sound.

The coronary arteries are worn out...

Blood instantly filled the pericardial cavity.

If it's outside, it's time for emergency treatment. The chest cavity is opened to resolve the cardiac tamponade.

However, with Dr. Mehal's physical condition, he could be directly declared clinically dead.

Sweat broke out on Zheng Ren's forehead.

Surgery, failed.

Come again!

Another operation failed five minutes later.

Come again!

Zheng Ren was in the operating room of the system, concentrating on the surgery, completely oblivious to the passage of time on the alien plane.

In the blink of an eye, the 22 consecutive days of surgical training ended.

528 hours, 31680 minutes, boring and boring training done in one breath.

Zheng Ren was not tired, but filled with a strange excitement.

Things that require great perseverance, Zheng Ren regards as entertainment, like playing games all night, more than 30,000 minutes, fleeting in the blink of an eye.

do not eat,

do not drink,

endlessly,

Sleepless.

But the operation was a success!

It was not an accidental success. Zheng Ren performed 30 consecutive coronary occlusion operations similar to Dr. Mehar's, and the completion rate of all operations was 100%.

But it's not over yet, it's just an accident, a beginning.

Because of Dr. Mechal's abnormal blood coagulation state, it is not enough to open the coronary artery.

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.

It works this time, but it doesn't mean it will work next time.

Surgical trauma, no matter how high the level, will stay. Moreover, Dr. Mehal is still aging, and his body is gradually changing.

Next time, even Zheng Ren can't guarantee that he will be able to do rotational atherectomy again.

Even if it is successful, it can only prolong the patient's survival by a few months, and then face the same situation endlessly.

Zheng Ren did not step down when the operation was 100% complete. Instead, he took a recoverable stent and studied it.

This retrievable stent-graft is the kind commonly used clinically.

Zheng Ren rarely thought for a long time before he lowered the recyclable membrane-covered stent.

Stretch the subject's coronary artery, and the redness left by the subject on the system panel quickly fades away.

The operation should be over here.

But Zheng Ren didn't move, he was a little worried, worried that the big pig's trotters would not understand his intentions.

However, worry is unnecessary.

With a thought, the experimental subject lay motionless in the operating room of the system.

And time seemed to have passed for several months, and the stent was full of blood clots.

This is what Zheng Ren considers. Whether the patient can be regarded as a successful operation in the true sense depends on this.

He carefully opened the balloon of the recoverable stent, installed another absorber, and turned the frequency to a certain range to absorb the falling thrombus.

The stent-graft was removed little by little, very carefully, the surgical level of a master is still very difficult to do.

Unfortunately, no accidents, thrombus still fell off and flowed into other blood vessels, causing arterial embolism.

Reflected in the experimental subject, the symptom is cerebral infarction.

Although the operation failed, Zheng Ren showed a smile.

It was the first time he smiled after entering the operating room of the system.

There is no problem with the idea, but the operation method needs to be improved.

That's fine, as long as the direction is correct, everything is easy to talk about.

It was uninterrupted surgical training, and even with a master's level of surgery, Zheng Ren had a very difficult time doing it.

It didn't take that long this time, after 21 hours and 44 minutes of surgical training, Zheng Ren was already able to skillfully remove the stent-covered stent full of blood clots, and the next steps were simple, just installing a new stent.

The only problem with this new technique is that the cost to the patient is relatively high.

In a few months, a stent will be placed, and corresponding drugs will be taken orally for anticoagulant treatment.

But there is a way after all, isn't it?

It took another 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 of the Karolinska Institute of Medicine and Surgery in Stockholm, Su Yun was still flicking his phone with his head down, chatting with some girl.

The professor still hasn't come back, and several doctors are still concentrating on recording each 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 none of this had anything to do with Zheng Ren. With a smile, he leaned back and leaned back on the chair.

Seeing that Zheng Ren finally moved, Su Yun put down the phone.

"Boss, there's no problem, right?" Su Yun didn't know where the confidence came from. This kind of surgery that is difficult to perform at the level of a master level, he actually believed that Zheng Ren could do it.

"No problem." Zheng Ren said.

After a pause, Zheng Ren said with certainty: "It's absolutely fine!"

"That's good." Su Yun smiled and took a breath, "I'll help the professor later."

"What to do for him?" Zheng Ren was surprised.

"His mouth is clumsier than the waist of his cotton trousers, so of course he can't win a quarrel. I'll help him quarrel and get this operation." Su Yun said with a smile, and he seemed 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 hating himself?

I'm good at talking, but I can't do surgery? !

But it didn't look like Zheng Ren.

Su Yun felt aggrieved... MD, the human heart transplant operation must be carried out again, so that this guy feels that he can't do it!