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Difference between revisions of "3D Printed Otoscope"
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Revision as of 10:04, 4 December 2014
3D Printed Otoscope
Project developed by Amwallis
- This is currently a placeholder page for a project I am working on - details will be updated soon
- Paragraph description of the OSAT - why is it Appropriate? What need does it fulfil? Are there case studies you have found of a technology being used successfully?
- Picture of completed print using
Bill of Materials
- The main otoscope body weights 20 grams. The approximate cost of this part is $0.50. 87 min
- The battery cover weights 6 grams. The approximate cost of this part is $0.15. 19 min
- The switch cover weights 2 grams. The approximate cost of this part is $0.05. 4 min
- The circular base on which the lens assembly and the ear piece mounts weights 5 grams. The approximate cost of this part is $0.15. 22 min
- The ear piece weights 3 grams. The approximate cost of this part is $0.08. 22 min
- The lens assembly weights 3 grams. The approximate cost of this part is $0.08. 17 min
- A SMD pushbutton switch is used to activate the otoscope's light. The approximate cost of this part is $0.57.
- A white LED is used to shine light into the ear. The approximate cost of this part is $0.80.
- A 220 ohm resistor is used to limit current draw. The approximate cost of this part is $0.10.
- A 38mm diameter, 150mm focal length concave lens in used. The approximate cost of this part is $3.95.
- About half a meter of 22 gauge solid core wire is used. Cost is assumed to be negligible.
Total cost to manufacture is $6.43
Tools needed for fabrication of the OSAT
- MOST Delta RepRap or similar RepRap 3-D printer
- Depending on print quality, a knife may be needed to shave away plastic on the edges of the parts that come together.
- Super glue is needed to join the switch cover and the mount base to the main otoscope body.
- A soldering iron and solder is needed to securely attach the electrical components together
- Wire strippers and/or diagonals are needed to trim the wiring
- Rubber bands may be helpful to hold some of the parts together while the glue dries.
Skills and Knowledge Necessary to Make the OSAT
- You will need to know how to solder 
Technical Specifications and Assembly Instructions
- Provide directions for print/assembly - be detailed enough in your “how to” to ensure that someone could construct the device from your description. Consider the elegance of IKEA like instructions.
- Include print time estimate
- Include assembly time estimate
- Including drawings or pictures of the device at stage of assembly at minimum. (http://www.appropedia.org/Special:Upload)
- Consider video if appropriate
Common Problems and Solutions
- Include common mistakes/problems to avoid in building your OSAT and how to overcome them
- Assuming PLA plastic costing $0.025 per gram is used ($25 per 1kg spool), the otoscope can be built for $6.43
- A inexpensive home use otoscope costs approximately $30.00
- This results in a savings of $23.57 as the otoscope can be printed for 21% of the commercial equivalent