Introduction to Biomedical Engineering Design

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Introduction to Biomedical Engineering Design

• Chapter 1

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What is Design?

• Is NOT research or craftsmanship!
• Involves devices, processes, re-engineering,
  systems, optimization, regulations, finances,
  innovation, invention, entrepreneurship, etc.

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Design

• Verb invent, intend, devise

• Noun drawing, arrangement, pattern, plan, art of
  making designs

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For What Uses Might Products be Designed?
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Basic but Essential Questions

• Who?
• What?
• Where?
• When?
• Why?
• How?

Their Job? Well, yes, but also..
Your Job
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Flow Diagram for Design
What, Who, Where, When, Why
What, Who, Where, When, Why
What, Who, Where, When, Why, How
How
No
No
Go/ no-go
Yes
How
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Generic Design 13 Experts Concept Map
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Design National Academy of Science

• Product refers to hardware, service, or mission.
• Process refers to the means by which a product is
  manufactured and supported
• Development refers to the refinement of products
  and processes to correct problems.
  (Re-engineering, sometimes reverse engineering, )

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Design NAS

• Mission requirements analysis/Product system
  strategy
• - high level engineering analysis
• - requirements definition

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Design NAS

• Product specification
• - product strategy
• - voice of the customer!!!
• (QFD, etc.)
• - environment (EPA) regulatory (FDA!!!)
• - planned product specification

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Design NAS

• Concept development
• - target setting (cost, schedule, performance,
  etc.)
• - brainstorming on product process
  alternatives
• - development of product and process concepts.

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Design NAS

• Preliminary Product and/or Process design
• - high level definition of product and process
  designs
• - evaluation of same v. targets
• - high level system trade-offs

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Design NAS

• Refinement verification of detail product and
  process designs
• - development of designs for components,
  subsystems manufacturing
• - Geometry creation
• - prediction evaluation of attributes
• - tracking trade-offs

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Design NAS

• System Prototype Development
• - experimental evaluation of attributes that do
  not meet target values
• Preparation for production
• - refine process for manufacture
• Production, Testing, Certification, Delivery
• Operation, support, decommissioning, disposal

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Design as taught in BME272 _at_ Vanderbilt
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Other Design Concerns

• Retracing if problem is ill defined
• Excessive documentation
• Human patients, animal studies, permissions
• Design is often iterative
• Delving into already patented info bases
• Teamwork, finances, reality