The Cleveland researchers found a way to compress the entire technology of the existing artificial lung into a true lung-sized device.
The artificial lungs currently used by people must breathe pure oxygen, but the artificial lungs made by these researchers are extremely efficient and can breathe ordinary air. This technology makes it possible to greatly improve the degree of portability, even artificial lungs that can be implanted into the human body, to serve nearly 200 million patients with different degrees of lung disease.
The current artificial lungs are inefficient and inconvenient to use, requiring large oxygen cylinders. Reliance on pure oxygen also limits their service life, because fresh supplies are required every few days.
The new artificial lung made by researchers at Case-Western Reserve University imitates natural human organs, including a bunch of blood vessels made of silicone. These blood vessels branch outward, and the thinnest diameter is less than a quarter of the hair. One. This biological simulation miniaturization technology provides better surface area-to-volume ratio and improves the oxygen exchange efficiency of the device.
The researchers believe that they can make a device that is about the size of a real lung effective. In other words, one day, the artificial lung they designed can be implanted in patients. In this way, the artificial lung can be powered by the heart, without a separate source of power.
Experiments using pig blood have shown that the efficiency of the new artificial lung is two to four times higher than the current technical level. Although the initial goal was to improve efficiency and portability, the research team believes that they can be implanted within 10 years. The model is clinically tested. Of course, the premise is that we have not yet developed a customized replacement lung at that time.
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