Medical-grade stethoscope v2.0

thingiverse

This project was a collaborative effort from a large team consisting of Alex Pavlosky, Jennifer Glauche, Spencer Chambers, Mahmoud Al-Alawi, Kliment Yanev, Carrie Wakem, Shaker Shaheen, Mohammed Khdair, and Mohammed Khdair. Their goal was to create an open-source, 3D printed stethoscope that could produce a clear and accurate sound, comparable to commercial stethoscopes. The team chose to use a silicone tube, which provides good acoustic properties, and a spring that fits snugly into the eartubes. The instructions provided in this guide are for assembling the stethoscope from scratch using 3D printed parts. However, you can also purchase pre-assembled stethoscopes or modify existing ones to suit your needs. To assemble the stethoscope, follow these steps: 1. Attach the diaphragm (40mm) to the stethoscope head. 2. Attach the stethoscope head to the silicone tube. 3. Attach the silicone tube to the Y-Piece. 4. Attach spring to ear tubes. 5. Attach the Y-piece to the ear tubes. 6. Attach the ear tubes to the eartips / earbuds. The team used CrystalSCAD and OpenSCAD to create all STL files, which can be recreated by following these steps: 1. Install CrystalSCAD using `gem install crystalscad`. 2. Run the script `ruby source_files/stethoscope_head/stethoscope_head.rb`. Mass manufacturing is also possible with this design. The team prints 4 stethoscopes per plate to ensure that each stethoscope is created out of the same material. The serial numbering system consists of two parts: the last number part is the total number of unique stethoscopes created since day one, and all numbers before that dash are spool identifiers involved in that stethoscope. Other groups have also made 3D printed stethoscopes. You can see some examples on websites like youmagine.com or https://www.youmagine.com/designs/stethoscope-chestpiece. The team presents their work under the TAPR OHL license, which covers hardware insofar as it applies.