I can see health

Chapter 924 Valve Regurgitation
kebed stayed in Shanghai Fifth Hospital for a week.

A week later.

The final evaluation surgery of the tricuspid valve repair system came as scheduled.

This time the operation was done quietly and very low-key.

Only a few people in the Cardiology Department of the Fifth Hospital of Shanghai knew about the arrangement of this operation.

Lu Chen, Kebed, Gu Xinyue, and Jin Miao all came to the interventional catheterization room of the Department of Cardiology.

The tricuspid valve repair system after many improvements has been shown in the eyes of everyone.

This valve repair device is small in size, but its internal structure is extremely precise.

As long as the Shanghai Fifth Hospital passes the test of this evaluation operation, it will mean the birth of China's first "tricuspid valve repair system"!

……

catheter room.

Except for Lu Chen, everyone had solemn expressions.

For him, failure is just another one.

There are still countless ideas in his mind, this time it failed, and there will be a next time.

But for others, if you miss this time, you will never know when the next time will come.

The most important thing is, if you can hug Lu Chen's thigh, that's up to you.

"Let's start the surgery!"

Following Lu Chen's order, Jin Miao and Gu Xinyue took the catheter of the "Tricuspid Valve Repair System" and began to puncture blood vessels and enter the patient's body.

A device for repairing a tricuspid valve mainly includes a main body and a plurality of coupling elements.

The main body portion is substantially annular D-shaped with an eccentric opening.

The mitral valve facing the left atrium during systole covers basically the entire part of its posterior leaflet, thereby preventing and reducing tricuspid regurgitation, which is also the key point of the entire tricuspid valve repair device!
Jinmiao successfully delivered the tricuspid valve repair system to the heart valve.

To avoid attachment of the supratricuspid device to the annulus, causing the chordae to take the load.

Lu Chen attached the supratricuspid device to the functional leaflets, and by attaching to the valve leaflets, engaged many chordae that were not torn to support the flail segment.

In addition, there is another difficulty in the operation!
The human heart is constantly beating.

With traditional devices, during the beating process of the heart, between the device above the tricuspid valve and the posterior leaflet, there may be repeated encounters, resulting in cumulative damage to the valve leaflet tissue.

After Lu Chen improved the traditional method, the tricuspid valve device remained attached to the posterior leaflet.

Let them move together, and no collision event will occur.

"Lu, your idea is so cool!" Kebed looked at the device in front of him in amazement.

Lu Chen smiled, and while instructing the operation, he explained: "The device above the tricuspid valve is made of flexible material, which slowly hardens after the device is implanted, which advantageously enables the device above the tricuspid valve to adopt the anatomy of the leaflet tissue. shape, keep the functional chordae at their natural length, thereby maintaining an even load distribution between them while absorbing the systolic thrust of left ventricular pressure."

"Awesome! Really amazing!" Kebed gave a thumbs up.

The entire operation has been done so far without any problems.

The puncture, catheter guide wire entry, and repair system entry all went smoothly.

But Lu Chen's thinking was always tense, and he didn't dare to relax in the slightest.

Because the real hurdle is still behind, the biggest problem in valve repair is the regurgitation flow of the valve!
How to judge reflux?
After the operation is completed, it is necessary to listen to the echocardiography instrument and measure the size of the regurgitation volume, as well as the valve area and perioral flow velocity.

Once the blood backflow is too large, the whole operation will fail completely.

"Lu, I'd like to know how you reduced the problem of valve regurgitation after the repair?" Kebed wondered.

This conundrum is also plaguing Mayo's internal patching system.

Lu Chen picked up the icon of the tricuspid valve repair system and explained: "Look at the part where the extension is adjacent to the posterior part. When the device is implanted, I let it overlap with the posterior part of the anterior leaflet. Through this special The overlapping area can effectively reduce tricuspid regurgitation."

"Ah? It's okay!"

Kebed froze, trying to figure out how the whole valve system worked.

The valve repair system he saw today is the first of its kind in the world!

……

However, this is only a simulated operation after all.

Two 10 minutes later.

With the assistance of Gu Xinyue, Jin Miao completed the entire tricuspid valve repair operation.

At this moment, he didn't dare to vent his breath, and his eyes were fixed on the valve image on the screen.

The operation was successfully completed, but this does not mean that the operation was successful.

"Bring over the ultrasound machine!"

The attendant nurse quickly brought over the echocardiography machine.

Lu Chen took the probe and started the ultrasound examination.

"Valve in good position!"

"Good orifice area!"

"Good valve flow rate!"

The last and most important indicator is the degree of valve regurgitation.

Everyone stared at Lu Chen closely, wanting to know the final result as soon as possible.

At this time, Lu Chen was also concentrating, holding the ultrasound probe in his hand, checking the size of the valve regurgitation on the ultrasound screen.

Finally, he saw the last image clearly.

Gently put down the ultrasound machine, Lu Chen slowly raised his head, and said with a smile to everyone: "There is very little valvular regurgitation!"

The voice just fell.

In the catheterization room, everyone breathed a sigh of relief, and turned to reveal joy.

Jin Miao and Gu Xinyue raised their brows with joy, their hands were trembling slightly with excitement.

The entire simulated operation was done by the two of them.

"We... succeeded!" Gu Xinyue said excitedly.

Jin Miao nodded abruptly, and echoed, "Yes, it worked, I did it!"

"I...became an assistant!" Gu Xinyue smiled.

Lu Chen stood aside and poured cold water on the two of them at the right time.

"This is a simulated operation. I will be happy when it is successfully performed on clinical patients."

"Hey." Hearing this, Jin Miao restrained her smile a little, but still looked overjoyed.

At this time, Professor Kebed was surrounding the tricuspid valve repair system, constantly observing.

"Lu, can you lend us this Mayo?" Kebed suddenly raised his head and said, "We will pay for it!"

Lu Chen shook his head with a smile, "I'm afraid not. This system is a collaboration between the Fifth Hospital of Shanghai and a company in Shanghai, in order to develop China's first tricuspid valve repair system. It must not be sold."

"What a pity." Kebed shook his head.

Lu Chen smiled and said, "Professor Kebed, Mayo's current repair system is not bad, but with a little modification, it will definitely be better."

Kebed spread his hands, "I didn't see your surgery today, I thought the same way, but now, I don't think so."

He turned his attention to this brand new "tricuspid valve repair" device.

It's a pity that he can only see the operation process, but not the internal structure of the device.

He also couldn't modify Mayo's device.

Here in the Fifth Hospital of Shanghai, everything is thriving.

On the side of the First Hospital in Kyoto, there has also been a major breakthrough.

(End of this chapter)