Taking medicine seems to be a common way of treating diseases today. However, the drawback is that the drugs taken are not specifically delivered to the patient, but through the blood throughout the body, especially for the brain or heart disease, this conventional treatment seems to be somewhat less powerful, by Therefore, scientists have come up with a new treatment, such as implanting tiny medical instruments into the human body for targeted treatment.
So where does the power to drive this implantable instrument come from? If you have a battery inside, I am afraid that the shape will be very cumbersome, and it is not suitable for implanting in the human body; it is not practical to let the patient always carry a bulky power supply with him. To solve these problems, researchers at Stanford University in the United States have developed a method.
Wireless charging system for implanted device weight loss
The new approach is to launch a wireless power source into a microelectronic medical device that is programmable in the human body, such as a pacemaker, a neurostimulator or a new sensor and a device to be developed.
In the lab, the researchers tested the wireless charging system in pigs and used it to power a small pacemaker in a rabbit's body. Currently, researchers are preparing to test the system on the human body.
The researchers said: "We need to reduce the weight of these devices to make them as small as possible so that they can be implanted deeper into the patient's body, using new methods to treat the disease and alleviate their pain."
Through hard work, the researchers eliminated cumbersome batteries and clumsy charging systems that hinder the widespread use of medical devices . The research team created an electronic device that was smaller than the rice grain to act as a pacemaker. It can be wirelessly powered or charged by an external credit card-sized power source. It is programmed along with nerves, muscles, and other tissues in the heart or brain to be programmed to perform a variety of medical tasks. Once implanted in the body, wireless power can be recharged to replenish the power needed.
An active substance is the main active ingredient in a drug. Take a simple aspirin for example. Acetyl salicylic acid is synthesized through chemical process and purified to a specified purity. The synthesis of acetyl salicylic acid is made by adding various excipients, such as fillers, adhesives, disintegrating agents, etc., and then pressing it into tablets. The production of apis is generally either pure chemical synthesis, biological fermentation, or semi-synthesis, with biological fermentation followed by extraction followed by synthesis. Not all pharmaceutical enterprises make API by themselves, and many manufacturers do not have the scale to produce API. Even if there is large-scale production, the cost of production may be much higher than that of procurement. Therefore, most manufacturers buy bulk drugs, and then make preparations, so that the production of drugs can be completed without a very large scale. At present, China and India have become the two largest API producers in the world. Many European and American pharmaceutical companies, even some of their own original drugs, will give up the production of API as the patent expires and the market matures, and turn to purchase apis from China and India,API production generally go through laboratory, generated through laboratory bottle container canister, taking after successful, pilot magnification, which is to enlarge the quantity of the production, then no problem tends to be faced with a lot of small scale experiment, a very simple example, the heating process, due to the relatively small amount in the laboratory, uneven heating cases is less, But if it is scaled up to a few tons of pot, at this time the heating may be not hot in this place, where the paste pot, at this time you need to stir, but the speed of mixing is appropriate, this process needs to calculate or grope. Finally from the pilot test, and then to the formal production, the volume of further amplification, and will face a lot of new problems. Therefore, although some drugs are generic, the research and development of the whole process from small test, pilot test to the final mass production is indispensable, so even generic drugs have very high research and development costs.
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