156B Week 10

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

• • Schedule and prepare the Final Design Review with Capillary Biomedical

  • Finalize the prototype and conduct testing with 31G stylet and needle

  • Due to unforeseen issues on the sponsor’s side of the cannula design, we will use 24-gauge music wire for demonstrations

Accomplishments from Previous Week

• • Received feedback regarding the upcoming final design review with Kennie and Andres

  • Complete a Draft for the Poster

  • Assembled additional device for demonstration

  • Stress Relaxation analysis of torsional spring

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

• • Finish presentation slides for final review with client and poster presentation (everyone)

  • Continue building additional prototypes for demonstration using 24-gauge music wire (Peter)

  • Work on elevator speech and get every member able to explain the analysis for poster session(everyone)

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

• • Teleconference with Capillary Biomedical (Kennie and Andres, 06/01/2017)

    • Went over the final presentation slides

      • Kennie and Andres think that we have key points on the slides

      • Paul (CEO) and another founder will join the presentation

      • Add a slide about inertia and initial device movement

      • Try to add more items on future design recommendation

    • Consider all limitations of current catheter

      • Current tip of catheter is not conducive of getting into the gel

      • Continue testing with 24g music wire, as the wire represents how the device works

      • Show the analysis on the 31g and why it may/not work

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

• • Class meeting with Prof. T and Pedro (05/31/2017)

    • Preloaded torsional spring

      • Everything has to be sterilized

      • Loading (torsional) spring

      • Casing

        • Plastic at 130’C may melt

        • What type of plastic can withstand the temperature and medical use

      • Needle

        • Pick the right wire

        • Music wire may work; however, Prof. T expects that during the sterilization process it may change

    • Fatigue analysis

      • Preload and duration is not fatigue analysis

      • It is called “Creep” analysis

        • Dimensional changes occur

      • It is not cycle issue neither

      • Check “Stress relaxation” - material property

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

• • N/A

Risks and Areas of Concern

• • Will our 3D printed, unreinforced prototypes withstand multiple trials of testing for demonstration purposes?

  • Will the clients be impressed with our sponsor demonstration on Thursday?

Resources or Information Required but not Available

• • N/A

Schedule

• • Describe upcoming milestone

    • 06/08/2017 - Final Design Review

    • 06/15/2017 - Poster Session

  • Update Gantt chart.

    • Updated

Budget (list amount spent and amount remaining)

• • Budget:$700.00

  • Spent: $303.85

  • Remaining: $396.15

Progress on Report and Webpage

• • Report

    • Reviewed by Team 7 (05/31/2017)

    • Updated (06/04/2017)

  • Webpage

    • Updated (06/04/2017)