It's not that difficult to open a hospital in another world, right? Chapter 658: Magic blood pressure monitor? Having more people in the Mage Tower is indeed useful!
He can only "know how to use" most of the magic, or to be precise, most of the magic that is not used in medical treatment. As for what the principle is, how to modify it, and how to change it, he has no idea.
For example, using the mage's hands to transform into hemostatic forceps, toothed forceps, toothless forceps, retractors and even delivery forceps, he can do it effortlessly, with precise changes and perfect force control;
However, other magics of the force field branch of the plasticity system, such as how the floating disk increases its load-bearing capacity with the level of the mage, how the force field palm controls the strength, and achieves a series of functions such as tripping, grabbing, pushing away, whipping, and even interfering with spell casting...
…
Sorry, no.
So now, if he wants to make a magic blood pressure monitor, Gretel's first idea is to use a force field to replace the cuff and air bag for pressurization. But how do you get the sound from this stethoscope?
How can the magician responsible for monitoring pinpoint the time point when the sound accompanying the heartbeat suddenly weakens or disappears to determine the diastolic blood pressure? Or even further, let the magic itself determine this time period and display the corresponding blood pressure.
Value?
"ah"
Grete held his head.
He really doesn’t understand!
He has a specialization in the field of surgery, he is an emergency doctor, he is not a big shot in the field of medical equipment... Whether it is a blood pressure monitor or a vital sign monitor, he can only use it, not make it!
"Mr Norwood Oro"
Two heads emerged from the laboratory. A transformation magician and a plasticity magician, gathered around Gretel and listened to his gestures:
"I want to build something like this..."
"Magic instead of cuffs? Instead of airbags?"
Mr. Norwood immediately began to make plans. The daily job of magicians in the transformation department is to help everyone solve problems and turn the goals dreamed up by other magicians into reality.
Most other magicians would jump at the various possible, impossible, and unimaginable demands put forward by customers. They have long been used to it. After thinking for a while, he spread out the manuscript paper and began to calculate:
How to construct the cuff?
How to build an airbag?
Or simply don’t use force field constraints and just use wind magic?
What is the range of pressure and pressure reduction, the sound of the heartbeat, the sound of blood flowing in the blood vessels, and which magic configuration should be spliced...
Contrary to his actions, Aurora did not immediately start thinking about the magic configuration. The young plastic magician was still confused:
"Why do we need to build an air bag? Why do we need a cuff? Since we are measuring blood pressure, wouldn't it be better to directly measure the blood vessel pressure?"
"this……"
Grete struggled for a moment. To be honest, he is not a medical device professional, let alone the history of medical devices. He has no idea about "why the blood pressure monitor is made like this." When asked now, he can only start from
The principle begins to push:
"Maybe...it's not convenient to directly measure blood vessel pressure? After all, it's separated by skin, muscles, and maybe several layers of clothes, so the measurement may not be accurate..."
“So what exactly does a cuff work like?”
Gretel started with physiology, thought about it from the beginning, and slowly organized his thoughts:
"The cuff measurement method is that when the air pressure in the cuff is higher than the systolic pressure, the blood cannot pass through the blood vessels and there is no fluctuation, so no sound can be heard;"
"The cuff air pressure continues to decrease until it is lower than the systolic pressure. The blood is forced through the blood vessels by the pressure of the contraction of the heart. The blood vessels are subject to this pressure and mechanical vibration occurs. We can hear the sound of this mechanical vibration through the stethoscope;
"
"The cuff air pressure continues to decrease, the resistance continues to decrease, the mechanical vibration weakens, and the mechanical vibration sound heard through the stethoscope gradually decreases;"
"Until the cuff pressure is lower than the diastolic pressure and the resistance to the blood vessels drops to 0, then there will be no mechanical vibration in the blood vessels and the stethoscope will not be able to hear any sound."
He stopped explaining and looked around at the two people around him:
"So the mercury barometer is different from the invasive sphygmomanometer. It actually measures the air pressure of the cuff, rather than directly measuring the blood vessel pressure."
"ah?"
"ah?"
Norwood and Aurora spoke at the same time. Gretel did not pause and continued to speak slowly:
"It's just that when the cuff pressure equals the vascular pressure at a certain moment, a specific thing will happen. The measurer will take the value at this moment as the systolic/diastolic blood pressure reading, and that's it."
"So, the key is the speed of deflation?" Aurora thought slowly and said:
"Because the heart rate is about 60, 70, 70 or 80 beats per minute, so the deflation speed is too fast and the air pressure reaches the bottom all at once, and nothing can be measured..."
"Since this is the principle, then we can measure the pressure directly!" Master Norwood suddenly jumped up:
"We have almost the same thing! As for the steam engine and the pressure cooker they built before, didn't they build a pressure gauge? We can dismantle that magic and change it to the related blood pressure magic!"
"Record its pressure waveform!" Grete's eyes also lit up:
"Maximum pressure, minimum pressure value! Change the display mode to millimeters of mercury, that's what we want!"
"Isn't it just a matter of accuracy and time? This is not difficult! I'll change it!" Master Norwood was gearing up and almost wanted to run away. After thinking about it, he turned around and asked:
"Boss, what else do you need?"
"Connect a light screen? Like an electrocardiogram? Then connect it to an output device, such as one that can spit out paper tape. I remember doing related research when doing electrocardiogram magic;" Gretel clapped his fingers:
"It's best to do both together! I need both! The one that lasts a day would be even better!"
"No problem, boss!" Master Norwood already had an idea and agreed. Grete turned to Aurora:
"Oluo, do me a favor. You two each make a version. Mr. Norwood, you make the physical version. Whether it is engraved on magic crystal or whatever, in short, it will be activated.
Usable;"
"Auro, what you're doing with the magic version is to create a magic spell and hit it directly on the patient's arm. It's best to last for a period of time, preferably one hour per level."
"please!"
"No problem, boss!"
The two magicians answered at the same time. Then, they turned around, ran, looked up information, purchased the corresponding spell configuration, and began to modify the experiment...
Within a week, the magic blood pressure monitor that Gretel wanted was presented to him.
"Boss, give it a try?"
Grete took the belt from Master Norwood's hand and wrapped it around his upper arm. The chip was pressed into the center of the inner side of the upper arm, wrapped tightly around it, and activated the magic crystal at the top.
A curtain of light unfolded in front of everyone's eyes.
"155,98 Master Norwood, your blood pressure is a bit high! Are you too tired during this period?"
****
This chapter thanks @书友20201027193620425131037 Teacher Shu for his technical guidance.
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