Adjust 15 degrees to an angle of 75 degrees with the nerve root, and if it is small, it will slide, and if it is large, it will not be able to be catheterized.

The angle calculated by Yang Ping is not a mouthful, but an accurate angle obtained by observing Su Nanchen's simulated puncture.

The systematic super training program has cultivated Yang Ping's composition ability, so that his accuracy has improved a lot whether it is his brain or hands, which is not only a mechanical measurement, but also a delicate and nuanced feeling.

How can a puncture at 75 degrees with the nerve root, that is, 15 degrees from the vertical down, be so precise? Su Nanchen wondered in his heart.

The accuracy of navigation can be accurate to a few tenths of a millimeter, but that is only a theoretical accuracy, the 3D reconstruction image itself will have a certain amount of distortion, and the reference point is not 100% accurate.

Just like a sniper rifle with an effective range of 2,000 meters, it does not mean that it will definitely be able to hit the enemy within 2,000 kilometers, and there are too many factors that affect it.

"As long as you are at a 75-degree angle to the nerve root, you will definitely succeed." Yang Ping reminded in a low voice again, and his tone was affirmative.

Su Nanchen didn't have much confidence and couldn't be so precise.

He tried several more times, but either the tip of the needle slipped away or he couldn't get the catheter placed.

Professor Su also saw the problem, the puncture needle is hard, the guidewire is elastic, and the direction is not optimal, so it is impossible to break through the adhesion, which requires a hand that is no longer human.

"You don't have to ask for perfection, after successful puncture, the catheter is directly inserted, and the drug is injected after 24 hours, the microcatheter and the surrounding nerve sheath will form a biological block, and the possibility of leakage is very low!" Professor Su asked Su Nanchen to finish the operation as soon as possible.

You don't have to stick to 100 points, 80 points is also a success.

If the puncture is successful, the catheter is placed directly, and the microcatheter is also left in the nerve root sheath, but the distance left is very short, there is a possibility of drug leakage, and there is a possibility that the microcatheter will be withdrawn when the patient is active.

It's a very low possibility, but it's still a possibility.

Su Nanchen didn't want to give up, and wanted to fight for another 20 points to reach 100 points.

Not for himself, but for the patient, to be able to be 100 points, never 99, this is his philosophy.

"Are you sure," Su Nanchen asked Yang Ping.

Yang Ping nodded.

After a brief conversation and an exchange of glances, the two turned around and exchanged places back to back.

Su Nanchen let go, and Yang Ping took the handle of the puncture needle exposed outside his body.

There are two puncture needles, one is thick, which is responsible for making a tunnel in the bone tissue, and the other is thin, which enters through the sheath of the thick needle, and is responsible for puncturing the nerve root sheath.

Yang Ping held the handle, the fine needle in his hand twisted, looking for a feeling, and the dynamic three-dimensional anatomical diagram in his mind was presented, perfecting the details little by little.

The needle in the hand, which also appears in the brain, has a more realistic relationship with the nerve roots than navigation.

The thin needle adjusts the direction and punctures the nerve root sheath at an angle of 75 degrees.

Su Nanchen handed over the microcatheter, which was threaded with a guide wire, which entered from a hollow needle, five millimeters, one centimeter, three centimeters, and entered smoothly without any bending.

This means that the guidewire and microcatheter have successfully broken through the adhesions and entered the nerve sheath, and they have penetrated three centimeters deeper.

A balloon in the pedicle bony tunnel is inflated to hold the catheter in place.

Su Nanchen tried several times and didn't finish something, but he completed it once.

Professor Su bowed slightly, his admiring gaze fell on Yang Ping, and his love for talent suddenly rose.

The two turned around again to exchange positions, Yang Ping returned the back action to Su Nanchen, Su Nanchen slowly withdrew the fine needle and the thick needle of the puncture, and finally pulled out the guide wire, and the puncture was completed.

"Thank you!"

"I'm just helping you with a fifteen-degree adjustment."

The two looked at each other and smiled.

This friend has been decided, Sunan Chen thought.

The catheter is fixed externally, an analgesic pump is connected, and anesthetic is injected through the microcatheter into the nerve sheath of thoracic 2.

"Ning Tianxiong, how are you feeling?" Dr. Su asked the patient.

The patient is under local anesthesia and can speak soberly.

"It doesn't hurt anymore!" The patient is in a prone position and has trouble speaking.

"How's it going, isn't it difficult?" Dr. Su asked again.

"It's always a bit of a stretch to be on your stomach." Ning Tianxiong was very cooperative.

"Blood oxygen saturation, 100 percent!" Said the anesthesiologist who was on the side to help with the monitoring.

There is no respiratory depression, which means that there is no leakage of the drug, and the catheter has penetrated three centimeters and will not leak.

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"Supine position, observe for fifteen minutes, no respiratory depression, and then send back to the ward." Professor Su said to Su Nanchen.

Yang Ping and Su Nanchen assisted the patient to turn over and turn into a supine position, and observed for 15 minutes without respiratory depression.

An ultra-difficult puncture was successfully completed by two young people, and it was perfect, the technical content of this piercing was equivalent to the decapitation operation of special forces in the war, it was all technical work.

It's already past seven o'clock, and Director Han looks at the time.

Director Zhao of the Medical Department instructed the internal restaurant to prepare meals, but Professor Su did not plan to stay for dinner because of the tight schedule.

Now he changed his mind and stayed for dinner.

"It's hard work, stay for a light meal and then go back." Director Han insisted.

"Okay!" Professor Su was refreshed.

"Call Xiao Yang too!" Su Jiao specially proposed.

Talented people respect and cherish talents more.

Several other directors also stayed to accompany Professor Su, after all, the dean of the attached one, the chairman of the orthopedic department, and the academicians in the future, no matter which identity they are, they all play a pivotal role in the medical circle, this face cannot be refuted, and next time maybe you will have to find someone else to do something.

The dinner was set up in the cafeteria, Professor Su didn't drink a drop of alcohol, and everyone didn't drink, some had to drive, and some had surgery at night.

In addition to Director Han, Director Tian and Director Tan, Director Qin of the Department of Spine Surgery of Sanbo Hospital, Director Gao of the Department of Sports Medicine, and Director Chang of the Department of Joint Surgery all came to accompany him.

Dean Xia and Dean Sun are all here, and the dean of the attached one, who is a big man in the medical field, can't be lazy, not to mention that Dean Xia and Professor Su are in the same school, have worked together, and have a certain friendship.

Dean Xia and Director Han accompanied each other, and Su Nanchen pulled Yang Ping to sit together, and the two of them had endless words, about how the patient just now could accurately adjust the needle from the vertical adjustment of 15 degrees, and how this angle was calculated.

The dinner table was divided into two circles, one circle for Su Nanchen and Yang Ping, and one circle for the others.

Su Nanchen and Yang Ping have been chatting in a low voice, discussing all professional topics, and adding WeChat to each other, and others don't care about these two young people.

"Nan Chen, Uncle asked you something!" Professor Su reminded that Su Nanchen remembered that there were also Dean Xia, Director Han and others present.

"Nanchen, come to the house to play when you have time." Dean Xia said.

Dean Xia and Professor Su both graduated from Nandu Medical University, or one term, Dean Xia was also transferred from the first class, and when they were young, they both lived in the old dormitory of Nandu Medical University, when Su Nanchen was still in elementary school.

Dean Xia's daughter and Su Nanchen are about the same age, and the two were classmates in elementary school, but Dean Xia's daughter did not study medicine, studied law, and worked in the provincial Department of Justice.

"Okay, thank you, Uncle Xia." Su Nanchen was generous and decent, then lifted the teapot, poured tea for the seniors, and raised a glass to give tea to everyone.

Dean Xia and Professor Su talked about the farm of the First Affiliated Hospital, and the two discussed taking the time to take a look, in the past, the First Affiliated Hospital divided a piece of land in the suburbs to make a farm, and everyone had time to take turns to work and grow some grains, fruits and vegetables to make up for the lack of living materials.

Later, this land has not been sold, and in the hands of Professor Su, a modern farm has been built, and some vegetables and fruits will be sent to the staff of the First Affiliated Hospital every year, which is regarded as welfare.

Yang Ping felt that this dinner was very easy, and the harvest was also great, and he made a friend of Su Nanchen, who was knowledgeable, but not proud, for a case, humbly asked Yang Ping for every detail, as if he didn't get it clear, and he would never give up. He has no second-generation arrogant vices at all.

"Connect more when you have time!" After Sunan left in the morning, he also sent a WeChat message.

"Professor Su appreciates you very much, Xiao Yang!" Director Han hummed a tune, very happy.

At the end of the meal, the two went to the Overseas Chinese Building to see Mr. Ning, who was smiling and comforting his daughter: "Take it easy, don't be so sad, life will end after all, it's just the difference in the length of time, and everyone can't escape." ”

Seeing Director Han and Yang Ping coming in, he was very happy: "Thank you two, it doesn't hurt anymore, and there is no problem with breathing, thank you so much." ”

Pain is very distressing to people and is the most unbearable symptom for patients, and the World Health Organization has listed pain as the fifth most important vital sign after heart rate, respiration, blood pressure, and body temperature.

Pain elimination has become a basic right of patients, the duty and responsibility of medical staff.

"It's comfortable!" Mr. Ning leaned on the head of the bed, holding a "Visual Analogue Pain Rating Scale" in his hand, and the muscles on his face were relaxed, without the previous distortion.

"Thank you! Thank you, Director Han, thank you Dr. Yang! Thanks, really! Miss Ning stood up and bowed.

"Thank you, Professor Han! Bothered! Mr. Ning shook hands with Director Han.

When shaking hands with Yang Ping, he said, "Dr. Yang and Dr. Su helped me to pierce the piercing, and in the end, it seems that the angle needs to be corrected, fifteen degrees, and it is still operated by Dr. Yang." ”

"I'm sober and listening." Mr. Ning explained with a smile.

Under local anesthesia, he lay on the operating table, listened to the doctor's conversation, and was very clear about the operation process.

"Thank you so much for allowing me to sit here and laugh and talk." Mr. Ning is in good spirits.

"Well, go back early after eating and rest, and don't drink."

Before eating, Yang Ping sent a WeChat message to Xiao Su.

Xiao Su's WeChat, I haven't read it just now.