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Scientists want to treat complex bone fractures with a bone-healing gun
It’s a bit like a handheld 3D printer, with all the accuracy challenges that implies.
“3D printing has been highlighted as a novel approach to make such personalized implants, but this also requires substantial time and money,” said Jung Seung Lee, a biomedical engineering researcher at the Sungkyunkwan University in Korea. Lee’s team experimented with various proportions of these two ingredients and finally nailed the formulation that checked all the boxes: It extruded at a relatively harmless 60° Celsius, the mix was mechanically sound, it adhered to the bone well, and it degraded over time. Extrusion-based 3D printers, the ones that work more or less like very advanced hot glue guns, usually use guiding rods or rails for precise printing head positioning.
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