It's not that hard to open a hospital in another world, right?

Chapter 493 Sphygmomanometer, make a magic version! (Bugfield leader plus more 8)

Great success in trapping spies!
Going to a confidant, Gretel was able to be happy and continue to visit the booth.He took out a lot of gold coins, bought half a ton of rubber balls (and set a ton of rubber for the coming year), and bought a whole car of branches, leaves, flowers and plants, and various animals:

Small clusters of white flowers, soft-leaved branches, and gray bark stripped from the tree, which is said to be used by the locals to treat swamp fever;

Brightly colored frogs, the serum extracted from frogs can paralyze and paralyze people;
Palm-length, fist-thick, brown fruit as hard as wood, with a bunch of bean-shaped seeds clustered inside;

And it is regarded as a "sacred flower" by the natives of the New World, which can rotate the brown disk around the sun...

Of course, in the end, Gretel still asked the archmage to speak out, found the owner of the long skirt, and asked if he could let Cerilla try on the skirt—if the size was right, it would be best to buy it.

When he asked what the dress was decorated with, the seller answered very readily:
"Jade worm!—oh, that's a local worm. It's so beautiful, it's called 'Rainbow Eyes'. This dress is decorated with its elytra. It's said to be a princess's wedding dress. Three hundred The female workers worked for a whole year..."

"Ah! Take it! Take it!"

Miss Yinlong jumped back reflexively.Such a beautiful decoration is actually a bug carapace!That tiny, dirty thing!

Think about the feeling of wearing a skirt, as if the whole body is covered with bugs, and the whole person is not good!
Although she wasn't afraid of this thing—these bugs couldn't hurt her, at best it was just a breath of a dragon—but, it was so disgusting!

She jumped out so fast that she even knocked over the tea tray in front of her, and the tea flowed all over the table.Serila turned around and ran away regardless.Gretel smiled apologetically and spread his palms.The seller laughed understandingly:

"Ah, normal, young lady—"

The two parties shook hands, exchanged contact information, and agreed to come and go frequently in the future, and ended the exhibition.After leaving the exhibition hall, Gretel did not go back to the hospital, but rushed to the Mage Tower in a hurry:
"Mr. Norwood! Mr. Norwood! Do me a favor, please!"

Mr. Norwood emerged from the laboratory.This magician of the transformation department, after following Gretel, his fortunes changed, he passed the level smoothly, and became a fifth-level mage.Currently in high spirits, he brought two apprentices to study hard, and was marching towards the sixth level.

After staying in the mage's tower for nearly a year, his white hair on the sideburns has also decreased, his waist has become straighter, his walking has become brisk, and his voice has become louder.When looking at Gretel, his eyes were bright and full of enthusiasm:
"Mr. Nordmark? What's the matter?"

The boss is calling!
There is a new subject!

Papers can be published again!
Master Nordmark is very generous. For the topics he throws out, he can list at most one corresponding author, and maybe not even the corresponding author...

"Look at these rubbers!" Gretel summoned two mage hands, larger and bolder, and clasped them together.Take a shot of the space bag, and pour out a handful of rubber balls from it:

"Help me, treat them with sulfur and make them into airbags—something you can hold in one hand, and then connect to a tube, and then connect to a long, thin airbag..."

Gretel wrote and sketched, and told Master Norwood the general structure of the inflatable parts of the old-fashioned mercury sphygmomanometer.Master Norwood squeezed the rubber ball and nodded:
"I know, using sulfur treatment, "The Philosopher's Stone" has published related papers. It's a pity that the things made are clumsy, and the long tubes and thin slices are a bit troublesome. The things you want, boss, have to be researched. Boss, when do you want them? "

"The sooner the better...uh..."

Gretel's voice was getting smaller and smaller.Although he is not engaged in materials science, he also knows the four tiankengs of biochemical and environmental materials, and it is not easy to produce results.Researchers need to work hard, and bosses need to be more patient.

Relying on a magician of the transformation department and leading two apprentices, if you want to raise the demand today and get results tomorrow, wake up, the requirements are too high.

"It's okay, I'll try a few more sets." Master Norwood took up the task empathetically:

"Boss, can you just use sulfur? Do you need to use anything else? How much sulfur do you need to add? When you saw the archmages handling it, how did you do it? Do you need to heat it?"

Gretel almost ran away.When he was in the dwarf kingdom, he was in charge of coming up with an idea, and the archmage of the transformation department was in charge of handling it.He also watched the process. Basically, the sulfur flew up, the rubber ball flew up, and was kneaded, fused, and stretched by an invisible hand...

Then there is no more, and then, all the gaskets, sealing rings, and other things that Gretel needs are all made.What temperature control, what material ratio, does not exist.

Gretel had to figure it out on his own.He counted with his fingers:
"You don't have to use sulfur only, you can try all kinds of sulfur compounds;"

"The amount of sulfur...you can try it from 1% to 40%. Different amounts seem to make different rubbers;"

"Temperature... soaking in sulfide solution is also acceptable, vulcanization at room temperature is also possible, hot vulcanization is also possible... I don't know the exact temperature, but you can try it in hot water, steam, or hot air; "

"You can try adding something else, for example, the nitrocellulose I made some time ago..."

Understood, the boss has an idea, but he is not sure how to achieve the effect, let alone the operational ability.Master Norwood nodded, took the bag of rubber, shook off the draft paper, and drew a grid of Big Boss:
"Check papers first!" He yelled at his two apprentices:
"Angela, go and look up papers! Berry, go and buy a copy of all the rubber products on the market! Speed ​​up!"

The two apprentices agreed.One ran out of the Mage Tower, recruited a magic horse, and rushed to the trading hall of the White Tower; the other ran to the information center of the Mage Tower, went to Mr. Moss, and looked through the list of papers.

And Mr. Norwood himself raised his rough and callused palm, which was no longer cracked, and began to scratch his head:
Hey, different compounds, different dosages, different ratios, different temperatures, how many combinations are there...at least thousands?

To recruit a few more apprentices, I don't know if the boss agrees...

No, the boss will definitely agree, and the boss doesn't care about this.The key lies in whether Mr. Lynn will agree, and whether the income from the mage tower can be sustained.

You know, to cultivate a transformation magician, it is purely a pile of materials!
Mr. Norwood rolled up his sleeves, began to draw up the experimental plan, made a list of materials, gathered the experimental equipment, and prepared to work.Cerilla came in curiously, looking left and right.I couldn't see why for a long time, so I turned back and asked Gretel:

"Gretel, what did you ask him to do? This thing...what is it for?"

She swiped and swiped with the exploded diagram of the design, making a lot of noise.Gretel has come up with something new again!Throwing myself in the hospital, drilling alone on the top of the mountain for so long, I finally came up with something new!
"This one. . . . oh, the blood pressure monitor." Gretel was concentrating on cutting open a dog's chest wall, and took a long time to glance back.Absent-minded, he threw out a name casually, and then returned his attention to the operation:
All blood samples are placed in the Tower of Sleepless.He didn't want to draw blood one by one in his mage's tower, try to cross-match the blood to test the blood type, and then use [identify bloodline] to draw a signal map.I had no choice but to pick up half of the experiments I did when I was in the hospital:

A dog model of a patent ductus arteriosus was produced.

Thanks to the Rabies Research Institute, the council caught a lot of rabid dogs for him, and naturally, a bunch of normal stray dogs were also caught along the way.As the owner of the hospital, Gretel is in charge of the project, and it is not a problem at all to use two dogs to make animal models.

Unfortunately, the previous experiments all failed.

Hope it works out this time.Gretel's men steadily cut open the dog's skin, subcutaneous tissue, and muscles, opened the ribs with a chest opener, cut the upper pericardium along the vagus nerve, and exposed the pulmonary artery...

Cerilla watched from the side without daring to breathe, so she automatically stood a little farther away and put on a mask for herself.After a while, seeing Gretel finish separating the two blood vessels, he stopped for a rest, and raced against time to ask:

"What is blood pressure?"

"It's the pressure of blood." Gretel stared at the yellow dog's jugular vein that had been separated and exposed, thinking about how long to cut.Hearing Cerilla's question, he pointed to the exposed descending aorta after the mediastinal pleural parietal layer was cut open:
"When the heart beats, it puts a lot of pressure on the blood and injects it into the arteries. The arteries then contract section by section to provide pressure, so that the blood can be sent to all parts of the body. I made this thing to measure the pressure of the blood. .”

Cerilla popped out a secret magic eye, staring at the slightly beating blood vessels, looking curiously and nervously at the same time.Gretel pointed to the artery:

"If you put a tube in there, connected to a glass tube that stands upright, you'll see the blood go up all the way up—how ​​high it goes, that's how high your blood pressure is. But then, you might A glass tube two or three meters high is needed..."

Gretel's mouth curled into a smile. A blood pressure of 130 mm Hg is approximately equal to 1767 mm H1.7O, or 230 meters.If unfortunately, the patient's blood pressure is as high as 3 mm Hg, then the glass tube needs to be more than [-] meters high.

Such a tall glass tube is not troublesome, right? If the glass tube is thin, capillary action alone may suck blood up; 1ml.With so much blood coming out, how can it be stuffed back into the blood vessel?
……Back then, the doctor who first measured the animal’s blood pressure drew blood 270 centimeters high from the carotid artery of the horse, did he get it back in the end?
"If you don't want such a tall glass tube, you have to use a U-shaped tube and put mercury on the other end. But mercury is troublesome and very toxic. It's best not to use invasive ones..."

"Then why can't you use magic?"

Gretel was taken aback.Cerilla pointed to the throbbing blood vessel, and gently pressed down with her white fingertips, as if pressing a column of blood gushing out of nothingness, feeling its pressure:

"Can you use a tube, insert it directly into the blood vessel, and connect the other end to the magic circle—how much pressure you are under, and the magic circle will directly show it?"

Gretel:? ? ?

Very good, girl, you are self-taught, just come up with invasive blood pressure monitoring?

It would be a good way, I will ask later, if there is a magic circle that directly shows the pressure...

****
3000 words!
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(End of this chapter)