156B Week 7

Overview of Status of Analysis, Design, Fabrication, Tests, etc.

• • Laryngoscope attachment to the blade is being CAD-ed

  • Ramp components have been ordered to be shipped to UCSD

    • 6 ft of aluminum rectangular tube

    • 8 ft aluminum 90 degree angle extrusion

    • 2 plastic adjustable-angle positioning hinges with square arms

      • These are to potentially replace the current metal lockable hinges with cylindrical arms

  • Ramp feet are being CAD-ed to attach to rectangular tubing for better sliding surface

Accomplishments from Previous Week

• • Determined and ordered components needed to implement new locking hinges

Goals for Next Week (list names after each item). Use specific and measurable objectives.

• • Update CAD model of ramp in Solidworks to reflect new changes in ramp components - Wendy

  • Fine-tune the laryngoscope design as needed - Brendon

  • Have ramp cover built and assembled - Emeline

  • Ensure that the ramp is operational by the end of the week - Everyone

Sponsor Comments from Last Meeting and Actions Taken to Address these Comments (indicate date of comments and if via email or in person)

• • By Email 5/12/17 (Dan Lee):

    • PVC is common and acceptable in the hospital

    • Batteries and laryngoscope are recycled separately. Laryngoscope handles/blades go to biohazard waste and are not recycled as plastic

    • 3D printing with ABS sounds great. For an actual device for use in patients, medical grade ABS could be used

Instructor Comments from Last Meeting and Actions Taken to Address these Comments  (indicate date of comments and if via email or in person)

• • Meeting on 5/10/17 with Ian

    • Laryngoscope feedback: it is possible to cut off part of the existing blade

      • Discovered that the fiber optic for the light is detachable

      • Determined the need for an added attachment to connect new blade to existing handle

    • Showed him the locking hinges and discussed options for mounting the hinges

      • Pros/Cons of using square aluminum extrusions and cylindrical piping

  • Meeting on 5/10/17 with Dr. T and Pedro

    • Fix the fillet between the laryngoscope blade and handle for more support (Dr. T)

    • Questions about the hinge with 10 degrees - Is it from the vertical? (Dr. T, Pedro)

      • This angle is taken from the neck

    • Thin walled stainless steel is preferable over aluminum if welding

      • Welding is to be avoided for ease of construction. It is not necessarily needed for this project (Dr. T)

    • Order L shaped aluminum extrusions from McMaster

      • Order was placed 5/11/17

    • General Report Comments:

      • Need more annotated figures

      • Fix format

      • Need an executive summary

      • Put values in metric and English units in parentheses; put numbers in engineering notation

      • Put all iterations of the ramp and laryngoscope in the Appendix and reference in Ch 2

      • Strain analysis not needed

      • use applicable standards that helped us in our design

      • Question: Does medical waste end up in landfills?

Comments from Other Students in the Class (indicate date of comments and if via email or in person)

• • NA

Risks and Areas of Concern

• • Ordered parts may not come in as soon as desired

  • Concerned about the ease with which the hinges would adjust

Resources or Information Required but not Available

• • NA

Schedule

• • Describe upcoming milestone

Budget (list amount spent and amount remaining)

• • Spent: $183.31

  • Amount Remaining: $1316.69

Progress on Report and Webpage

• • Report to be updated with edits from Pedro, Dr. Silberman, and Dr. T by Friday, 5/19/2017

  • Webpage continually updated