Biomedical Engineers! by Diane Bailey

Author:Diane Bailey
Language: eng
Format: epub
ISBN: 9781422284810
Publisher: National Highlights Inc
Published: 2016-08-15T00:00:00+00:00

This 3-D printer is creating the white gear at the bottom. It takes instructions fed in by a computer program and builds the object one very small layer at a time.

To build a blood vessel, BMEs first get stem cells from the patient. Then they place them in an incubator to grow more. Special chemicals are added so that the cells will grow into the specific type of cell that is needed. When there are enough, the cells are packed tightly into little pellets. Now it’s time for the printing.

Have you ever made shapes out of gelatin? When the gelatin is hot, you can pour it into a mold that is any shape you like. After it cools, it will come out in that shape. That’s kind of how printing a blood vessel works. In this case, the printer first squirts out a substance called hydrogel, which is like a high-tech jelly. This is used to create a mold in the shape of a blood vessel. Next, the cell pellets are loaded into the printer. Then, they are printed into the hydrogel mold.

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