Doctors create portable ears with 3D printing and stem cells

Recently, doctors at the University of California at Los Angeles and the Center for Regenerative Medicine at the University of Edinburgh are perfecting a new technology that uses the patient's stem cells to grow their ears.

It is reported that they use 3D polymers to make ear molds and then take stem cell implants in the patient's own fat. “This new approach can change the entire system of care,” says Professor Ken Stewart, one of the researchers. At the same time, he is also a plastic surgeon at the Royal Hospital.

Researchers particularly want to address the reduction in ear development caused by congenital malformations for children with congenital microtia, and a range of hearing problems.

Currently, part of the rib cartilage is taken from the body of a small ear deformity and then grafted with the ear and skin of the surgeon to create a new ear. It is considered a complex and dangerous method, not a capable ear to create.

医生借助3D打印与干细胞创建可移植耳朵

Ear reconstruction will be the first application of this technology

For the new technology, doctors have used the Artec 3D scanner to obtain a digital model of the patient's ear. And if the patient's ears have small ears, then the ears of the family members can be used as a model. The model is first printed in 3D and then the stem cells are injected to form a regenerative tissue. The polymer scaffold degrades, leaving the finished intact ear.

The key to this process is the fact that stem cells are derived from fat. First of all, their extraction is minimally invasive compared to bone marrow extraction. This type of stem cells containing fat is the best type because they are rich and easy to extract. In addition, adipose tissue contains mesenchymal stem cells, which have the ability to grow connective tissue cells, ie, pluripotent stem cells.

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