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SonoHand Redefinition Presentation

Brandon Chung, Barry Cheung, Mayuki Sasagawa, Simon Kim

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Project Scope

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WOW Solution/Scope

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Mayuki

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WOW Solution/Scope

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  • Servos placed on each joint of the arm
  • Locks each joint in place, making the entire arm rigid
  • Operator uses foot switch to lock and unlock the arm

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Mayuki

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Deliverables

  • High Priority:
    • Functional Arm
      • XYZ position system
      • Locks/unlocks
      • Holds probe

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  • Low Priority:
    • Versatile clamp
    • Acts as 2 arms
    • Hand “wrist” rotation

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Barry

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Design Decisions

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Current Design Decisions

  • Arm-hand connector by ball and socket
  • Spring pressure system
    • Compression rate: 1.5lbs/in
  • Acrylic tubes over aluminum

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Barry

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Worst Case FEA for Fracture

Tensile Strength ~ 63 MPa

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Brandon

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Worst Case FEA for Displacement

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Brandon

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Future Design Decisions

  • Implement electronics on mechanical arm
    • Servo
      • Servo-driven arm movements
    • Sensors
      • Pressure
      • Distance
    • External backup power supply

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Mayuki

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Gantt Chart

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Mayuki

We will be meeting at Eotron LLC on April 18th - 20th to assemble the arm.

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Working Remotely

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Remote Approach

  • Workspace access

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  • COVID-19 helping us...

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  • Testing and integration

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Simon

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Resources We Still Need

  • Manufacturing methods
    • Testing form factor of 3D printed components
    • Machine shop outsourcing
  • Testing and demos
    • In-clinic testing
    • Live procedures

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Brandon

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Remaining Questions and Concerns

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Questions and Concerns

  • How to make SonoHand smarter and more intuitive?
  • Safety and preventative measures

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Simon

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THANK YOU!

Any questions, comments, or concerns?

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