Xun Mu shook his head slowly, and then said: "Not only the two of them, but also the other suspects who may have committed relatively small crimes and the families of the victims, have nothing to gain.

As for hospitals......

You should also know that if the suspect's motive is really to get revenge on the hospital, it means that he is likely to have been treated unfairly by the hospital.

For the hospital, this is a scandal, and if it is not necessary, it will definitely find a way to hide it.

From another point of view, the victim's family was poisoned and the young son died, not because of medical malpractice, but because someone poisoned him, except for the fact that he was poisoned in the hospital, which has nothing to do with the hospital at all.

In this case, they don't feel any pressure, and it is difficult for them to expose themselves to the scandal.

The road of motivation, not to mention going dead, but it is difficult to make a breakthrough in a short period of time, unless it takes a lot of time and energy to go down and repeatedly collect clues and inquiries, it is possible to solve the case by reasoning.

But this is a bit unworthy, if you can, let's start from the source of the poison, this direction, there should be a breakthrough in the short term. ”

"Understood." Brother Song's jaw.

After waiting for a while, everyone came, and Xun Mu announced the meeting.

Yan Zhongxin was the first to stand up and said, "After a detailed autopsy, as well as a detailed analysis of the examination reports of the other three victims......

Forget it, I won't say much about the process, let's just talk about the results, it is speculated that the victim Li Junfeng died between 7:20 and 7:30 in the morning.

Combined with the comprehensive calculation of pharmacokinetics and other aspects, including Li Junfeng, the poisoning time of the four poisoned patients was around 6:30 to 7 in the morning. ”

"Oh?" Xun Mu pinched his chin: "In this way, it is enough to eliminate most of the suspects, only intern Lin Miao, nurse Zhang Haiming, and one sealed ...... who have entered the ward during this time period."

"No, it may not be them," Yan Zhongxin interrupted Xun Mu and said: "In the bottle of normal saline where the poisonous rat was found, ethyl acetate was also found, and in addition, extra needle holes were found on the four plastic bottle seals. ”

"Extra needle holes?" Su Ping asked, "What do you mean?" ”

"To put it simply," said Yan Zhongxin, "normal saline, glucose and invert sugar are all common infusion drugs or drug carriers, in addition to direct use for water, electrolytes, sugar or correction of fluid balance, can also be used as carriers for other therapeutic drugs, such as cephalosporin and other antibiotics."

I've seen four patients' prescriptions, mainly vitamin K1 as an antidote, which is injected into saline injections and injected into the body with intravenous drips, in addition to other drugs for symptomatic treatment.

It is the sealing glue of the injection solution, and there will naturally be a small needle hole, which is because the drug is formed by injecting the injection into the injection, which is unavoidable.

After comparing the prescription with the infusion bottle and checking it, I found that there was an extra needle hole on the plastic bottle seal, which caused the poisoning of the four people.

It is speculated that the murderer's method of poisoning is to first dissolve the rat poison with ethyl acetate, and then inject the solution into these drugs, and then enter the human body with intravenous infusion, which eventually leads to the poisoning of rats. ”

After a pause, Yan Zhongxin continued: "Of course, the way the perpetrator poisoned, in fact, you have already guessed, and your guess is not far from ten.

But I would like to add that the time when the victim was poisoned and the time when the perpetrator was poisoned, these are two different things.

It is entirely possible that the perpetrator had poisoned a few hours earlier, but it was not until close to dawn that Zhang Haiming, the nurse on duty, happened to use the bottle of injection in question......"

"No," Su Ping suddenly spoke: "This possibility, in fact, I thought about it earlier, but now it can almost be ruled out." ”

"Oh?" Yan Zhongxin looked at him with some curiosity: "What do you say?" ”

"If this is the case, the time of poisoning of the victims should be different," Su Ping said: "After all, there are several bottles of injection, and one bottle in each bottle has a problem, so there is no reason to say that they are all poisoned between half past six and seven o'clock, which is too coincidental."

Of course, I also know that the injectable drugs are actually in order, not completely random, if the drugs they use have a strict order, when I didn't say. ”

Yan Zhongxin thought thoughtfully, and after being silent for a while, he shook his head: "The drugs in the first half of the night do have a strict order, but in the second half of the night, the drugs in each bottle of injection are the same, so it is really unlikely that it was done too long in advance, and I am worried." ”

Su Ping nodded: "Then at least one thing is clear at present - the scope of suspects can be locked on Zhang Haiming, Lin Miao and Fenggu." It is unlikely that the sealing and poisoning will start through injection, and the possibility is relatively small, followed by Lin Miao, and Zhang Haiming is the most suspicious.

Trace Examination Department, do you have any findings here? ”

"We have turned over a large amount of medical waste today," Chai Ningning stood up and said, "and separated the syringes from them and sent them to the toxicology laboratory for identification one by one, and finally found ethyl acetate and rat poison in the four syringes, which are presumed to be the murder weapons." ”

"Oh?" Xun Mu immediately asked: "Have you found fingerprints?" ”

"Unfortunately, no." Chai Ningning shook his head and said: "The suspect is a medical worker, disposable gloves are readily available to them, and if they have a little anti-investigation awareness, they will wear gloves to avoid leaving fingerprints when they want to commit crimes."

But it's not a big problem, you can't get the syringes in the hospital if you seal them, and it's unlikely that you can throw them into the medical waste if you get them, as for Lin Miao, just check if she went to the nurse's station to get the syringes before the patient was poisoned.

But it cannot be ruled out that she took four syringes in advance, hid them in her pocket, and brought them into the ward for injection, which is relatively unlikely. ”

"So the most likely thing at the moment is still Zhang Haiming, right?"

"I think so." Chai Ningning bowed her head, thought for a while, and added: "Of course, if evidence can be found to prove that Lin Miao received a syringe or brought a syringe into the ward, then she will be the most suspicious."

Because interns, at most, do some work such as changing dressings and removing stitches, and infusion and medicine are the responsibilities of nurses, and she doesn't need syringes and shouldn't use them. ”

Speaking of this, she paused slightly, and then said: "I suggest that we might as well use Lin Miao as a breakthrough to find a way to prove or prove that she once had four syringes in her hand."

If it can be proved that with the current progress of the investigation, coercive means such as summons and even detention were used to require her to cooperate with the investigation; And if it can be proven, there is a lot of Jiǔ, and the poisoner is Zhang Haiming. ”