I'm the Dauphin in France

Chapter 712 Rabbit and Camelia

However, the doctors did not mention that the syringe would reduce the patient's pain.

Joseph interrupted the crowd's admiration and asked, "So, who can make this thing?"

Lamarck thought: "Watchmakers. They can make very fine parts."

"Jeweler," Perna said, "The most complicated part of this syringe is the hollow needle. I've seen the Queen's hair ornaments, and the barrel on them is hollow."

Joseph immediately remembered his mother's warship hair accessory, the barrel of which was only slightly thicker than a toothpick.

He nodded and said, "Call the watchmaker and the jeweler. Oh, and borrow two locksmiths from father."

Thanks to Paris's well-developed rail transit system, seven royal craftsmen arrived at the Paris Pharmaceutical Factory in just one hour.

These top French craftsmen gathered around the standard blueprint redrawn by the Crown Prince and discussed for more than ten minutes to determine the division of tasks. They then laid out their tools and began trial production.

The jeweler rolled the silver sheet into a hollow tube as thick as a toothpick, burned it until it turned red, and then clamped the two ends and slowly stretched it.

As the silver tube gets longer, its diameter gets thinner.

But when it was only half the thickness of a toothpick, it suddenly broke in the middle.

The jeweler was not discouraged. He quickly threw away the waste and started the next attempt...

The syringe was originally sent to a locksmith to be made of brass, but it was soon discovered that melt-casting was too time-consuming, and it was finally decided to use fusible tin instead.

Although Joseph knew that tin usually contained a small amount of lead, the harm should be minimal if only a few injections were made, so he did not intervene.

After all, speed is the most important thing right now.

Two hours later, a dark silver syringe that was slightly thicker than the locksmith's thumb and had a crude shape was placed in front of Joseph.

For ease of processing, the needle is welded directly to the tin barrel.

The push rod and the piston are a whole oak stick - this is the easiest solution to meet the sealing requirements.

In short, everything seemed a bit makeshift.

But the silver needle was by no means a makeshift one. After the jeweler tried dozens of times, he finally stretched its diameter to a level close to that of the intramuscular injection needles of later generations.

Joseph tested the syringe with clean water and confirmed that it was usable, then immediately gave it to Perna for fumigation and disinfection.

More than ten minutes later, at the suggestion of the Crown Prince, Dr. Lamarck reduced the dosage of penicillin to 0.8 grams, and excitedly and unfamiliarly picked up the world's first syringe, preparing to inject Camelia.

Joseph noticed that Lamarck's assistant brought the liquid used to dilute penicillin, and asked cautiously: "Doctor Lamarck, what is this?"

"Please rest assured, it is distilled water."

This was a huge improvement for doctors in the 18th century. Usually, doctors would dilute medicines directly with water, or even water from the Seine...

After all, Lamarck had heard the Crown Prince talk about medical disinfection knowledge.

However, Joseph still felt that something was wrong, but he couldn't remember what it was for a moment. He could only watch Lamarck dilute the medicine and suck it into the syringe very awkwardly.

Then, Lamarck inserted the needle, which seemed frighteningly thick to Joseph, into the vein on the inside of Camelia's elbow with great precision.

After all, he is the best surgeon in Europe, and his skills are accurate and steady.

Watching the potion being slowly injected into the maid's body, Joseph suddenly slapped his forehead, remembering what he had forgotten just now, and said anxiously:

"Stop! Stop! No skin test..."

Lamarck was startled and hastily pulled out the needle.

Joseph looked at the position of the putt and hit it less than a quarter, which was okay.

Lamarck asked nervously, "You just said, skin test?"

"Yes, penicillin may cause allergies, and a small dose skin test should be performed first." "But I have injected rabbits many times and have never had an allergic reaction."

"That's because they are lucky..."

After observing for more than ten minutes, Joseph was relieved to confirm that Camelia had no signs of allergy. He was about to let Lamarck continue the injection, but he saw Camelia frowning and kept shouting "It hurts".

Perna hurried to comfort her: "Your Highness has given you a special medicine, you will get better soon. Do you have a headache or chest pain?"

"No..." The maid shook her head weakly, "It's my arm. It hurts."

Perna rubbed the area near the needle hole for her and said softly, "It's just a prick, it's okay."

"No, my whole arm hurts..."

Joseph frowned. He remembered that allergies would cause rashes, edema, and difficulty breathing. Camelia's symptoms did not seem like allergy symptoms.

He suddenly slapped his forehead again and looked at Lamarck: "It seems that normal saline should be used to dilute the medicine."

"Saline solution?"

“It’s 0.9% salt water.”

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"why?"

"It seems to be some kind of osmotic pressure..."

Joseph only remembered that in his previous life, the intravenous drips were diluted with saline or glucose. He once asked the doctor why this was done, and the answer he got was to increase the electrolyte concentration, otherwise it would be very painful.

Lamarck blinked in confusion: "Your Highness, but when I was experimenting with rabbits before, I used distilled water and the effect was very good."

If the maid still had the strength at this moment, she would definitely strongly protest against the suggestion that she was being treated as a "human-shaped rabbit".

Joseph sighed, "Did the rabbit struggle badly?"

"It seems, yes."

"It hurts." Joseph gestured to the bed. "That's what happened to Camelia."

Lamarck's eyes widened, obviously not understanding. However, out of trust in the Crown Prince's medical skills, he immediately nodded and said, "You mean, we should use 0.9% saline?"

"Yes, remember that the salt needs to be filtered through multiple layers."

"Yes, your highness. I will prepare it right away."

Fortunately, the pharmaceutical factory laboratory was well-equipped. Ten minutes later, an assistant brought over half a cup of filtered salt water.

Lamarck then calculated the amount of salt that needed to be added based on the volume of distilled water in the syringe, and then sucked it into the syringe after weighing it.

The silver needle pierced into Camelia's arm again, injecting all the penicillin into her veins.

Joseph remembered that she had not eaten seriously for several days, and said to Lamarck, "Doctor Lamarck, please prepare some more glucose for her injection."

"glucose?"

Joseph frowned. Could it be that glucose has not been discovered yet?
He tried to describe it: "It's the special sugar extracted from grapes, it's not sweet..."

Lamarck suddenly realized: "You mean the sugar discovered by Mr. Graf? I have read his paper.

"I'll have to look up the information. It seems that raisins need to be used for multiple purifications."

Joseph breathed a sigh of relief: "Then thank you for your help."

At 4 o'clock in the afternoon, Camelia woke up from a deep sleep, and her complexion was obviously not as bad as before.

Perna took her temperature and waved the thermometer excitedly: "Thank God, 38.3 degrees!"

(End of this chapter)