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Revision as of 21:44, 25 February 2012 (view source) Cmsunday@andrew.cmu.edu (Talk | contribs) (→Design 2: Headset Redesign (Cecily)) ← Older edit		Revision as of 02:24, 26 February 2012 (view source) Khchow@andrew.cmu.edu (Talk | contribs) (→Highlights from User Interviews (Kellen)) Newer edit →
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	===Highlights from User Interviews (Kellen)===		===Highlights from User Interviews (Kellen)===
-	1 retired nurse, 1 3rd year of nursing, 1st year med student, 1 trauma surgeon, 1 clinician	+	Our interviewees included the following people, all stakeholders:
		+	*Retired Nurse
		+	*Nurse with 3 years of experience
		+	*1st year Medical Student
		+	*Trauma Surgeon
		+	*Clinician
	Stethoscope selection		Stethoscope selection

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Revision as of 02:24, 26 February 2012

Contents 1 Group Information 2 Report 2 - Opportunity: Market Research and Design Concepts 2.1 Executive Summary 2.2 Market Research and Observations 2.2.1 Use Study Observations 2.2.2 User Interview Questions 2.2.3 Highlights from User Interviews (Kellen) 2.2.4 Top Stakeholder Product Needs (Kellen) 2.3 Our Top 3 Design Concepts 2.3.1 Design 1: Coat Integration with Heater and Sanitizer (Kin) 2.3.2 Design 2: Headset Redesign (Cecily) 2.3.3 Design 3: Peltier heated stethoscope head (Jake) 2.4 Competitor Products Research 2.4.1 Pugh Chart (Jake) 2.5 Gantt Chart (Kin) 2.6 Summary and Recommendations 2.7 Appendix (100 ideas) 2.7.1 Air-tube Alternatives 2.7.2 Headset Alternatives 2.7.3 Chestpiece Alternatives 2.7.4 Stethoscope Integration Products 2.7.5 Other Ideas 2.8 Reference

Group Information

24-441 Spring 2012, Group 3

Kellen Chow (Team Leader with the new hair cut)

Jacob Divone (EMT with the puking guts)

KinHang Leung (Brainstorming Facilitator with the weird balloon animals)

Cecily Sunday (Charts Specialist with the sweet grandma)

Report 2 - Opportunity: Market Research and Design Concepts

Executive Summary

Market Research and Observations

Use Study Observations

User Interview Questions

In order to determine stakeholder needs we conducted user interviews using the following set of questions:

Choosing the Product

1. How did you select which stethoscope to buy?
2. How did you research your options?
3. What factors played the biggest role in your choice?

Using the product

1. How were you taught to use this equipment (in a class, on the job, etc.)?
2. Do you warm up, clean the face of, or do anything else to the stethoscope prior to using it on a patient?
3. Does your stethoscope perform equally well in all conditions (temperatures, background noises, etc.)?
4. How often do you buy a new stethoscope? Why do you buy a new one?
5. What type of maintenance operations do you perform on your stethoscope?
6. How do you carry the stethoscope and why (around neck, in pocket, etc.)?

Suggestions for Improvement

1. What don't you like about this product?
2. How would you suggest improving this product?

Highlights from User Interviews (Kellen)

Our interviewees included the following people, all stakeholders:

• Retired Nurse
• Nurse with 3 years of experience
• 1st year Medical Student
• Trauma Surgeon
• Clinician

Stethoscope selection

• hospitals supply cheaper ones or at a discount
• use cheap ones until you figure out what your environment and specialty was
• problem with diaphragm cracking and drying up

Top Stakeholder Product Needs (Kellen)

Our Top 3 Design Concepts

Design 1: Coat Integration with Heater and Sanitizer (Kin)

Scanned Sketches here

Potential Design Opportunities:

• Integration should not affect the manufacturing of the coat; the design should focus on making mechanisms on the stethoscope that would easily attach to an average doctor's coat.
• Integrating the tubes inside/under the collar - What kind of attachment mechanism...Pins? Velcro? Adhesive? Clips?
• Mounting the heating/sanitizing holder on the chest area of the coat - What kind of attachment mechanism...Safety Pins? Clip? Velcro?
• Alternate material selection for a light-weight design
• Designing the appropriate and low-cost heating element - Drawing heat from user's body? Battery-powered?
• Designing the sanitizing element - Alcohol patches in the holder must be easily replaceable

Design 2: Headset Redesign (Cecily)

During user interviews, numerous complaints arose in association with the stethoscope's headpiece. In order to hear properly, the holes in the ear pieces should be directly aligned with the user’s ear canals. However, this task is made difficult by the stiff body of the full headset and the often un-customized size of the ear buds. In environments with extraneous background noise, medical professional must often hold the headset in place with one hand with using the other to place the chest piece. Other issues associated with the headset include general discomfort, problems with the ear buds unscrewing and getting lost, and cracked or dried-out ear pieces due to frequent cleaning with alcohol wipes.

more test more text more text

Design 3: Peltier heated stethoscope head (Jake)

AHHHHHH MIRRORED! Nope.

Insert Text::

Competitor Products Research

Pugh Chart (Jake)

Gantt Chart (Kin)

Summary and Recommendations

Appendix (100 ideas)

I organized these...but i have the original list if we prefer those. do you think there is a way to carry over the numbers?...

Air-tube Alternatives

1. Water filled tubes
2. Alcohol filled tubes
3. Oil filled tubes
4. Replace air-filled tubes by electronic wires (headphones cables)
5. Retractable stethoscope tubing

Headset Alternatives

1. Snap-on earbuds instead of screwed-on
2. Noise-cancelling headphones
3. Noise-cancelling earbuds
4. Extendable tubes for better reach
5. Rubber earpieces
6. Silicone earpieces
7. Sleep plug earpieces
8. Ear cover earpieces
9. Bose styled head set
10. gel filled ear pieces
11. adjustable triple leaf spring
12. suction cup ear muffs
13. adjustable head band connecting ear pieces

Chestpiece Alternatives

1. Snap-on Diaphragm
2. Aperture style diaphragm
3. Disposable diaphragm surface/film
4. A diaphragm heater using Peltier cells
5. Replace diaphragm material with self-sanitizing brass
6. Sonar sensor integrated on the diaphragm
7. Adjustable drum
8. Changing tribology of the drum to lower noise produced from sheer forces

Stethoscope Integration Products

1. Blood pressure cuff interface
2. Diaphragm heater and holder integrated on coat (battery)
3. Alcohol Pouch integrated on coat
4. Coat pouch/clip around the chest area
5. A coat pouch/holder that heats and cleans the diaphragm
6. Integrating tubes in the coat sleeve and the diaphragm in the cuff
7. Hugging stethoscope coat (integrated in the coat so user hugs the patient during use)
8. Integrating a heart rate monitor on chestpiece
9. Integrating a murmuring sound indicator on chestpiece
10. A hand-held separate heart rate monitor (connects to chestpiece by wire)
11. A hand-held separate heart rate monitor (Bluetooth)
12. Bluetooth connection to user's mobile device (like an app)
13. Integration of a respiratory rate indicator
14. Integrate visual display of sound
15. Integrated with pulse oximeter
16. integrating recordable lung sounds
17. integrated timer stethoscope

Other Ideas

1. Hooked up to visual display on eyeglasses
2. Integration of the stethoscope on dummies that create sounds for medical training
3. Heated fluid in stethoscope for comfort
4. speaker output stethoscope
5. speaker integration stethoscope
6. broadcasting noise for training purposes
7. golf ball cleaning system
8. air blasting cleaning system
9. magnetic stethoscope holder
10. amplification through mechanical resonance
11. Bio-inspired sound amplification using inner ear drum
12. Signal processor at junction
13. Heated stethoscope holster to keep stethoscope at comfortable temp
14. Break away security system
15. Stethoscope flashlight
16. Remove metal to ensure stethoscope doesn't get cold

Reference