Introduction to Biomedical Engineering Design Chapter 1 Original author: Paul King Presentation modified by Karen Schuyler

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

Design Verb: invent, intend, devise Thinker picture is from: localtrestrain.aft.org/krswbtt/ images/Thinker.gif Light Bulb Man from: http://www.elchem.com/Images/Sm%20Light%20Bulb%20Man.gif Noun: drawing, arrangement, pattern, plan, art of making designs

For What Uses Might Products be Designed? Class discussion on what types of products they think would be good candidates for design.

Basic but Essential Questions Who? What? Where? When? Why? How? Their Job? Well, yes, but also…….. Your Job

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

Generic Design – 13 Experts Concept Map

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, …) National Academy of Sciences: http://www4.nationalacademies.org/nas/nashome.nsf

Design: NAS Mission requirements analysis/Product system strategy - high level engineering analysis - requirements definition

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

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

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

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 Sound from www.wavcentral.com

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

Design as taught in BME272 @ Vanderbilt

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