novelweb Chapter 655 Sensors
Chapter 655 Sensors
Chapter 655 Sensors
Step into 2003.
In the workshop of Puppy Medical Company, oxygen generators are being produced overtime.
Lu Guangming pointed to the production line and said, Chairman, recently, orders for household oxygen concentrators have increased significantly. Currently, orders for household oxygen concentrators have been scheduled for next year. We are running production at full capacity.
How many units are there in stock? Li Weidong asked.
There are more than a thousand more! Lu Guangming said.
That's fine, I will take these more than a thousand units away first. Li Weidong continued; The three thousand oxygen generators we donated before are definitely not enough. I heard that there are also cases of severe acute respiratory syndrome in the north. , so these more than a thousand oxygen generators are first donated to the capital for emergency response!
Lu Guangming hesitated for a moment, and then said, Chairman, you have to leave us 500 units. I have promised the Jinzhou Municipal Government to leave 500 units for the local hospitals.
It's true, we should also take care of the local folks and elders. Well, you keep 500 units, and I will take all the rest. Li Weidong said with a long sigh: It's a pity that we don't know how to make ventilators. , if we can make a ventilator, it will definitely help a lot.”
The ventilator is still somewhat technically difficult. If we want to do it, we may not be able to do it without three to five years of research and development. Lu Guangming said.
China's ventilator technology started relatively late in research and development. Although domestic companies were able to produce ventilators at that time, their technology was relatively backward, limited to old-fashioned bell-type positive and negative pressure ventilators, and time-switched constant-volume ventilators.
At that time, the United States had already begun to produce products such as automatic pressure-regulating ventilators, turbo-operated ventilators, and bi-level ventilators.
So at that time, the ventilators used in domestic hospitals had to rely on imports.
The technology related to ventilators is relatively mature abroad, but the intellectual property rights related to ventilators, especially the core intellectual property rights, are in the hands of foreigners, which limits the development of domestic ventilators.
It was not until more than ten years later that China's ventilator research and development level and technology improved, and many patents expired, that China's ventilator began to rise rapidly. By 2020, the United States will already import Chinese ventilators.
In contrast, the technical difficulty of the oxygen generator is much lower, and there are not so many patent barriers.
Chinese enterprises are fully capable of production.
Oxygen inhalation is definitely effective in treating respiratory diseases, so when respiratory diseases appear on a large scale, the sales of oxygen concentrators will inevitably increase significantly, so that the supply exceeds demand.
Not only many medical institutions, but also those suffering from chronic respiratory diseases also need oxygen concentrators to relieve the condition.
As a result, the production factory of Puppy Medical has instantly become a fragrant steamed bun, and the order has been scheduled for next year. Many people even go to the relationship to find a way to get the oxygen generator as soon as possible.
This seems to be back to the 1980s, the era when the supply and demand of resources were unbalanced. If you want to buy something, you have to go through the back door to approve the slip.
However, Li Weidong waved his hand, put the commercial orders in the back row first, and donated thousands of oxygen generators to hospitals in the south in one go.
This wave of donations has made the Puppy Oxygen Concentrator famous, and many ordinary people have frantically snapped up the Puppy Oxygen Concentrator.
People who haven’t experienced that time probably don’t understand that there were many people who robbed banlangen, white vinegar, and even white wine at that time, because ordinary people believed that white wine could be disinfected. That kind of panic buying trend is even worse.
Oxygen concentrator is a regular medical device, and it is indeed effective for respiratory diseases, so it has naturally become the target of common people's rush to buy.
It's just that the price of household oxygen generators was relatively expensive at that time, so those who rushed to buy oxygen generators were relatively rich people.
After leaving the production workshop, Li Weidong came to the scientific research department again.
Lu Guangming handed an electronic blood pressure monitor to Li Weidong.
Through the unremitting efforts of our scientific research department, the electronic blood pressure monitor has finally been successfully developed. But now our production line is fully producing oxygen generators, and there is no extra capacity to produce electronic blood pressure monitors.
Lu Guangming paused, and then said: Since the order for the oxygen generator has been scheduled for next year, we can't allocate excess production capacity in a short time. So my plan is to build a new production line dedicated to the production electronic sphygmomanometer.
Yes, not only the production line of blood pressure monitors, I suggest planning more factories in the planning stage to prepare for our future expansion of production capacity.
Li Weidong said, picked up the electronic blood pressure monitor, put it on his arm, and wanted to try it out.
Chairman, let me help you. Lu Guangming hurried forward, tied the cuff of the blood pressure monitor to Li Weidong's arm, and then picked up the rubber inflatable balloon and started to inflate it.
The traditional mercury sphygmomanometer has a cuff and an inflatable balloon. When measuring blood pressure, the cuff should be tied to the arm, and a stethoscope should be plugged inside, and then the inflatable balloon should be inflated to observe the change of the mercury column.
The first generation of electronic blood pressure monitors also does not have an automatic air pump, and needs to be manually inflated and exhausted.
Later, systems such as mechanical fixed-speed exhaust and electronic quick exhaust valve were gradually developed, which simplified some operations.
The second generation of electronic blood pressure monitors began to use pressurized air pumps and electronically controlled exhaust valves. At this time, the intelligent pressurization system has been used, and there is no need to manually pinch the rubber balloon to inflate.
The previous two generations of sphygmomanometers used decompression and synchronous measurement technology to measure blood pressure.
The third-generation electronic sphygmomanometer uses a servo pressurization pump, which can control the pressurization speed and measure blood pressure during pressurization. Therefore, the original simultaneous measurement of decompression has also become a technique of simultaneous measurement of pressurization.
The fourth-generation sphygmomanometer uses integrated gas circuit technology. This integrated gas circuit can be made into a small part, small enough to be installed in a watch. Today's wearable watch-style sphygmomanometers use this technique.
At present, the blood pressure monitor developed by Puppy Health is still the first generation, so it still has an inflatable balloon and needs to be inflated manually.
Li Weidong tried this blood pressure monitor, and then said, It's good, but it still needs improvement. It's better to be able to automatically inflate and deflate, which can greatly reduce operations and make it more convenient to use.
The next step of the scientific research department is to add an air pump to the blood pressure monitor, and to design a control system for the exhaust valve. With these two things, the automatic inflation function will be made.
Breaking through from the first generation of blood pressure monitors to the second generation of blood pressure monitors, the technical difficulty is not too great, and the principle is the same, only two things need to be added, one is the pressurized air pump for inflation, and the second is the servo that electronically controls the exhaust valve technology.
It is somewhat difficult to upgrade the second-generation blood pressure monitor to the third-generation blood pressure monitor, because it involves a change in measurement technology, from decompression synchronous measurement to pressurization synchronous measurement, which is tantamount to fundamentally changing the blood pressure monitor working principle.
Lu Guangming replied: There should be no problem with the air pump, and that thing can be bought. As for the exhaust valve control system, it has not been made in China. As far as I know, Panasonic and Omron should have an electronically controlled valve technology. We can use it.
They're all Japanese companies! Li Weidong shook his head, and continued; When we make products, we should still have some core technologies in hand, and we can't buy everything from abroad. So I think that the technology in this area is still independent. Well developed.
Before the popularization of integrated gas circuits, blood pressure monitors will always use electronic exhaust valve control technology, which means that this technology can still be used for more than ten years, and independent research and development must be more cost-effective.
However, when it comes to independent research and development, Lu Guangming showed a hesitant expression.
Li Weidong noticed this, and he opened the tree hole: Why, is there any difficulty in independent research and development? You might as well say it out, and let's discuss it.
It's like this. The core component of the electronic valve control system is the sensor, but we can't do things like sensors, which limits our research and development.
Lu Guangming paused, and then continued; Not only the electronic valve control system needs sensors, but our blood pressure monitor also needs sensors.
So far, our sensors have to rely on imports, and the price of imported sensors is really high, accounting for a large part of our cost.
That is to say, if the sensor can be localized, we can greatly reduce the product cost, and it will also help the research and development progress? Li Weidong asked immediately.
Yes. Lu Guangming said, pointed to the side and continued: The second project team of the R\u0026D department has been working on the research and development of the blood glucose measuring instrument, but the research and development is not going well at present, mainly because it is stuck on the sensor.
The sensors used in blood glucose measuring instruments, not to mention self-made, can’t be bought even if they are bought. In order to create technical barriers, foreign companies will never sell us that kind of sensors!
It's a sensor again! Li Weidong frowned slightly.
The blood pressure meter and blood glucose meter are the two core products that Li Weidong planned for the puppy's health, but now they are all stuck by the sensor.
In the past, China’s material conditions were not rich, and most people’s goal was to fill their stomachs. They could only eat simple tea and light meals on weekdays, and they had to eat something good during the festivals.
With the rapid development of China's economy, the living standards of ordinary people are constantly improving, and the improvement of living standards is most directly reflected on the dining table. Foods with high fat, high calorie, and high sugar content gradually occupy the dining table of ordinary people.
Coupled with other bad living habits, such as alcoholism, smoking, etc., the number of patients with high blood pressure and diabetes has risen rapidly.
Hypertension, hyperglycemia, and hyperlipidemia, the so-called three highs can be seen everywhere.
Moreover, the three-high population is gradually getting younger. Originally, it was only some elderly people who developed these diseases due to the degeneration of physical functions. Later, many middle-aged people in their 30s and 40s also developed symptoms of high blood pressure and diabetes.
In addition to long-term medication for this chronic disease, daily monitoring is also indispensable.
The families of hypertensive patients must have a blood pressure meter, and the homes of diabetic patients also need to be equipped with blood glucose meters so that they can be tested at any time.
In China in the future, whether it is hypertensive patients or diabetic patients, all of them will exceed 100 million, and the market demand for blood pressure meters and blood glucose meters is also very huge.
Li Weidong is well aware of this, so he decided to enter these two markets as soon as possible.
Electronic blood pressure meters and blood glucose meters were monopolized by foreign medical device companies in the early days.
The situation of blood pressure monitors is better. After all, there are old-fashioned mercury column blood pressure monitors, which are very simple to operate. Even without professional medical knowledge, they can be used after simple training.
A mercury column sphygmomanometer plus a stethoscope is not expensive, so there is not much domestic market for expensive imported electronic sphygmomanometers.
When cheap domestic electronic blood pressure monitors appeared, imported blood pressure monitors lost their competitiveness and gradually disappeared.
But the household blood glucose meter is different. This product has a high technical content, especially the special sensor for the blood glucose meter, which cannot be manufactured in China, and foreigners are unwilling to sell it. Therefore, for a long time, the blood glucose meter has been monopolized by foreign companies.
At that time, the price of a Bayer household blood glucose meter was as high as tens of thousands of RMB, and ordinary families were not willing to buy it.
Moreover, a blood sugar test strip from Bayer also costs ten yuan, which is equivalent to testing blood sugar once, and the cost is at least ten yuan.
In contrast, going to the hospital to test blood sugar, even the charging standard of the top three hospitals, is five yuan.
However, there are three advantages of home blood glucose meters. One is that blood glucose can be measured anytime and anywhere without going to the hospital.
The second is that the results can be obtained in two minutes, and it takes at least half an hour to go to the hospital for a blood test.
The third is that the amount of blood loss is small when using a blood glucose meter. Only one drop of blood is needed to detect blood sugar, but if you go to the hospital to test blood sugar, you need to draw more than half of the tube of blood.
For diabetic patients, it is necessary to detect blood sugar in several time periods, such as fasting blood sugar in the morning, blood sugar two hours after meals, blood sugar before lunch and before rice bowl, blood sugar before going to bed, and sometimes at two or three o'clock in the morning. Check your blood sugar once.
If half a tube of blood is drawn every time, the diabetic condition has not been relieved, and the person will be anemic first.
Compared with it, it doesn't matter if you blow your finger and bleed a drop of blood. Just a little nosebleed from a beautiful woman is enough to measure blood sugar for half a month.
So at that time, medical device representatives could often be seen shuttling between cadre wards of various hospitals, nursing homes for veteran cadres, or activity centers for retired cadres to sell such blood glucose meters that cost tens of thousands of yuan each.
Because only these retired bosses and cadres can afford such expensive things.
Later, with the development of technology, the prices of blood glucose meters and test strips gradually dropped, and ordinary people could afford blood glucose meters. Even hospitals switched to this portable blood glucose meter to measure blood sugar.
In fact, the working principle of the blood glucose meter is not complicated, the core is the current analysis method.
The sensors used in blood glucose meters generally use platinum electrodes or silver electrodes. After electricity is used, the effect of amperometric titration can be formed.
In this process, the oxidation film of glucose in the blood will undergo an oxidation reaction to generate hydrogen peroxide, and the sensor will measure the concentration of hydrogen peroxide through an electric current to determine the concentration of blood sugar.
Therefore, electrode amperometric sensors and electrochemical sensors are bound to be used in blood glucose meters. Without these two things, blood glucose meters cannot be made.
Medical instruments are only a small part of sensor applications. After the world enters the information age, the first thing to solve is to obtain accurate scientific research information, and sensors have become an indispensable way and means in the field of life and production. There are sensors in almost all electronic products in later generations.
Sensors are worth doing! Li Weidong took a deep breath and muttered to himself: The Internet era has just begun, and now it's time to start a sensor company and make sensors!
Today's update is delivered, on the first day of the month, ask for a guaranteed monthly pass, thank you for passing the customs!