General guidelines on 3D printing of components
The preferred choice for components should always be the medical grade, commercially available products. Please note that in some cases, like in the case of circuit splitters, there are easy to obtain commercial (non-medical) alternatives available that would still be safe to use. We therefore think the need for 3D printed components only arises in case of extreme shortage and/or problems with supply chains.
If 3D printing is needed, the first choice should be to ask a professional, medical printing or manufacturing company to produce the component. Injection molding is preferred over 3D printing, since bacterial hotbeds can form in layers and pores of 3D printed components. If 3D printed, the final product surface should be as smooth as possible.
- no compressible materials,
- no materials that can be toxic when inhaled,
- no materials that absorb moist,
- no leakage,
- should allow disinfection with, e.g., 70% ethanol, or autoclaving. Check the disinfection method applied in the hospital where the component will be used.
- should be OK with high concentrations of oxygen .
The International Workgroup on Differential Multiventilation
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