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Nebuliser Connector

Field Ready Challenge Open Source Design


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  • Sunil works as a Biomedical Engineer at Grande International Hospital, Kathmandu. A piece of equipment that he repeatedly sees in the engineering department is the nebuliser compressor. A nebuliser works by using compressed air to convert liquid medicine to an aerosol that can be inhaled by the patient. However, the plastic connector which attaches the medication tube to the compressor keeps breaking [http://www.fieldready.org/nebuliser]

  • Once a new hole is drilled through the nebuliser's exterior using a 12 mm drill bit, my connector will slide into the hole and be fastened with a 3d-printed wing nut. My connector was designed using FreeCAD from the dimensions provided by the provided link. I used the threaded portion of an M12-1.75 bolt that I pulled from Mcmaster.com. The nut stl file is also from Mcmaster, however it is scaled in the horizontal direction by 1.08 to ensure the threads mate up smoothly.

Materials and methods

1.75 mm PLA

1. The connector file should be printed with Support Type: Touching Buildplate
2. Both files were printed at 0.1 mm layer height, but could be printed at .25 mm if desired.



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Eba626ba6dbdd8832711cf0147116a8e?default=blank&size=40jdfordah published this design ago