156B Week 8

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

• • Ramp skeleton is built using aluminum extrusions and metal locking hinges

  • Fifth and sixth iterations of the laryngoscope attachment were CAD-ed and 3D printed

  • Ramp cover is designed and will be physically completed by Week 9

Accomplishments from Previous Week

• • CAD model of ramp in Solidworks is updated to reflect new changes in ramp components

  • Laryngoscope blade was fine-tuned and received positive feedback from sponsor

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

• • Have ramp cover sewn together and ready to be placed over ramp - Emeline

  • Print the final laryngoscope design out of ABS plastic - Brendon

  • Get quotes/estimates for injection molding and mass producing these products for future recommendations to sponsor - Wendy

  • Test laryngoscope and ramp with neonatal mannequins at the Jacobs Medical Center - Everyone

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

• • In Person Sponsor Meeting 5/19/17 (Dan Lee):

    • Laryngoscope

      • Very happy with progress and current design

      • Decrease the overall height of the blade

      • Gave us a new blade with a longer light source that we can utilize

      • Make the tip of the blade wider

      • Shortened the tunnel and decreased the diameter

    • Ramp

      • Likes the current design with aluminum extrusions

      • Prefers metal locking hinges over the plastic locking hinges

      • Likes the idea of polycarbonate sheets rather than acrylic

      • Thinks neoprene rubber is an okay choice but worries about cracking from use

      • Says vinyl is a good choice for the ramp cover

  • Email comments

    • Jae Kim: likes vinyl as the ramp cover

    • Both sponsors are out of town until June 1st (Jae) and June 5th (Dan)

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

• • Meeting in lab space on 5/17/17

    • Discussed how to mark angles on hinge

      • Can print values on tape and put that on, since this is a prototype

      • Can try steel writer pens

    • To machine the laryngoscope, we would need a CNC

      • Can get a quote to do it, but it is very expensive due to the setup and would not be worth the effort for one single part

      • Could make separate parts and weld them together, but this would be difficult to do with the tunnel

    • A bonus for the project would be to recycle the handle blades

    • When 3D printing, print a few different sized iterations at once for better use of time and testing

      • Talk to Paul from the guest presentation to figure out injection molding estimates

    • For "future recommendations" part of report, get quotes for mass producing the blades and include it to inform sponsors

    • Use polycarbonate or delrin instead of acrylic for the ramp

      • polycarbonate sheet was ordered on 5/17/17 and machined on 5/23/17

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

• • Presentation Feedback from 5/3/17:

    • Break up sentences with concise bullets

    • Show analysis with clear understanding

    • Discuss manufacturing options for future

    • Justify design choices better

    • Do not use N/m^2!

    • Format numbers better

Risks and Areas of Concern

• • Locking hinges may be too stiff

  • The vinyl ramp cover may fit loosely over the ramp

Resources or Information Required but not Available

• • N/A

Schedule

• • Have ramp fully functional by the beginning of Week 9

Budget (list amount spent and amount remaining)

• • Amount Spent: $225.04

  • Amount Remaining: $1274.96

Progress on Report and Webpage

• • 2nd rough draft of report will be done by midnight, Friday May 26

  • Webpage continually updated

    • Home page will be updated by midnight, Friday May 26