This answer manual contains the homework questions by chapter, each followed by a suggested

Solutions Manual – King & Fries & Johnson Design of Biomedical Devices and Systems This answer key is valid for edition 4

This answer manual contains the homework questions by chapter, each followed by a suggested solution or reason for the question.

Suggested additional topics for each section will be in red & are meant to allow some updating of material or use of materials that cannot be supplied in the text but must be accessed elsewhere… (such as the “Closing the Gap” homework in chapter 1…)

Chapter 1 (Introduction to Biomedical Engineering Design) Material:

• Often design projects are generated by persons concerned about improving the welfare of

persons close to them (patients, family, friends). Think about your acquaintances and develop a design project definition. Be sure to detail the who/what/where/why/when specifics as much as is necessary.

• As this is the student’s first assignment in design, the grades are somewhat determined

arbitrarily in relation to the amount of effort put in and in reference to the efforts of the students classmates and by the inclusion of principles covered in the text of chapter 1 such as “the who/what/where/why/how of design.”

• An orthopedic physician has proposed that you study the effect of electrical stimulation on

the healing rate of a bone fracture. Write this request up - briefly - as a research project.Rewrite this as a design project. Discuss the differences in the approaches.

-The main difference you will be looking for in this problem is that the student understands that the research project is typically aimed at proving a hypothesis, while the design project has a goal of improved healing.

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• You have done some form of design project in your personal life (device, plan of action,

project, college choice, etc.). Briefly describe, for your instructor, your favorite project and any lessons learned from it.

• Same criteria as in problem 1, use the opportunity to take exceptional examples and include

them in class feedback. Be sure to get the OK from the students involved, as some examples are highly personal and amount to the main reason students are in BME in the first place

• This is a good time to look at your background in order to determine what areas you will

be qualified to work in. What would you list as your assets in terms of your potential contribution to a design team?

• The answers to this question may be of value in planning your course and potentially how

you set up your teams…

• The who/what/where/why/how/when construct is often used in newspaper writing. From

your Sunday newspaper, extract one short news story and one obituary and analyze it for the above content. Turn in both articles and your commentary to the instructor.-The answers to this question may prove to be of value to you as an instructor, especially as the responses should help the students understand the construct of a newspaper article.Hopefully they will extrapolate this to their work in design.Supplemental material - Chapter 1

Early on in the design class I normally requested copies of the monthly “Closing the Gap” brochure advertising their annual conference. Students were required to read/report on at least one article or page of the magazine. – The aim being to sensitize the students to the use of technology (design) to assist in improving the lives of persons with some form of handicap. A few design projects came out of this exposure over the years…

(http://www.closingthegap.c om/)

It may be useful to at least introduce the class to MAUDE given the main example in the chapter…

On day one of the class I normally queried the class as to their summer experiences, plans after graduation, etc. This normally proved to be a good iceg=breaker and on occasion allowed suggestions re design projects resulting from summer work…

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Chapter 2 (Fundamental Design Tools) Material:

• Do a web search with the search term “Brainstorming”. Evaluate several of the sites, try some

of the software available and report on the usefulness of the program.

• Many of the web searches in this text may appear to the student to be of little value. The

goal of many of these exercises is to guarantee that they are familiar with a variety of terms that they might otherwise have to learn much later in life.

• Do a web search with the term concept map. Find and explore one or more example concept

maps.

• The student search should appear to be more than superficial and should incorporate

information from the chapter and lectures.

For example: A web search of concept maps was performed using Google as the search engine. The first hit produced a web site that defined concept mapping and provided the

example shown below:

The concept map graphically represents information on Saint Nicolas. It shows descriptions of and relationships between the subject's physical appearance, frequent activities, location, occupation, and personal contacts, as well as terms commonly associated with the subject. Some of the concepts are interrelated; for example, Saint Nicolas' birthday is celebrated by the Poles. Saint Nicolas is also not the same as Santa 3 / 4

Claus, who lives at the North Pole. The author makes the connection that the Poles do not live at the North Pole. The concept map was found at The Concept Mapping Homepage

(http://users.edte.utwente.nl/lanzing/cm_home.htm).

• Draw a process diagram for the process of taking hamburger meat, grinding it, then flattening

it and cutting out presized hamburger patties. The meat that is in between the patties is reinserted into the process just after the incoming meat is ground. What is wrong with this process? If necessary do a web search to answer this question.

-- The answer does not have to be complicated, but the diagram type should be correct WITH the arrows and such. The student must realize the flaw in the process is the passing back of old meat into the process which can contaminate the entire system. Students could possibly benefit from searching the FDA web site on proper handling techniques: A good student search will find the name of the hamburger chain that did exactly this and caused a series of deaths due to food poisoning.

The requisite steps and processes are as follows:

Process step Operation Transport meat to grinder Transport Place meat in grinder, grind Operate Transport meat to flattener Transport Flatten meat Operate Transport meat to cutter Transport Cut meat into patties Operate Store patties Store Add leftover meat to meat in transit to flattener Transport

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