156A Week 10

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

• • Experiments on smearing method

    • Wedging

    • Tape smearing

    • Air

    • Spinning

Accomplishments from Previous Week

• • Clarified the project priorities

  • Planned risk reduction(feasibility and potential problems of each smearing mechanism)

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

• • Finish risk reduction

    • Evaluation of the feasibility of each smearing mechanisms

    • State the easy to apply standards to discern acceptable smears

    • Clearly stated problems noticed during the risk reduction experiments

    • Propose methods to avoid stiction in smearing

    • Generic evaluation of the complexity of design for each smearing mechanism

Sponsor Comments from Last Meeting and Actions Taken to Address these Comments

• • Use diluted latex water-based paint for similar viscosity and floating particles as the blood substitute

  • recommended to accomplish smearing and staining device but with creating own blood smearing device as the higher priority

  • WoW design(extra credit)

    • Cap piercing mechanism to reduce human interaction with blood directly.

    • Rocking device for uniformly distributed blood cells in the sample to smear.

    • Labeling system for accurate patient information tracking.

Instructor Comments from Last Meeting and Actions Taken to Address these Comments

• • We should complete the training required for experimenting with blood

    • We decided to start with blood substitutes and use animal blood afterward. Animal blood is much safer and behaves similarly to human blood for smearing

    • Mix 1 ml of latex paint with 19 ml of distilled water and mix well. Red blood cells are 7 microns, and the concentration of this material is similar to blood. (Choose blood substitutes based on concentration)

    • A 1000x image of latex paint that has been diluted 1:20 in water provided by sponsor