Group 6 Slides_Updated
Transcript of Group 6 Slides_Updated
SUHEL DAHIWAL QUINN BOESLEY JAY MALLINSON
ENGGEN 770 Design Project Presentations:
Group 6
Background Common cause : Direct blow to chest due to car accident 1.2 million people killed every year (WHO report) At least 4 weeks to heal
Focus of the Systematic ReviewAim:To find evidence relating to the use of external rib
bracing for the treatment of rib fracture injuries Question:“For patients with non-flail rib fractures, how much
does the use of an external reinforcing member reduce the healing time compared with patients who don’t use any reinforcing.”
Population Intervention Comparison Outcome
Search strategy
Research Results
3 RCT’s (Quantitative)2 Case and 1 cohort studies (Qualitative)
Pain relief using RIB BELTS - Two groups (pain relief tablets and rib belts) - 25 % reduction in pain (pain scale) - Low sample size (no statistical difference
P=0.28)
Pulmonary complications
Design Requirements
Limit torso movement to reduce patients pain
Minimise impact on respiratory function
Widely applicable to a variety of patients
Be easy to use
Initial Concepts
Compression Shirt / Singlet
Rigid Support with Elastic Binding
Rib Belt with Light Material over Intercostal
Initial Concepts Continued
Multiple Rib BeltsInjection Moulded / 3D Printed
Adhesive Patch with Polymer Inserts
Combined MART Analysis
Initial Prototyping
• Difficult to stretch foam across rib injury
Elastic Foam Top
Velcro Base
Adhesive on underside
Prototype Development
Cut-outs in Foam for more Elasticity
Experimental Setup
Compare the force at a point applied by our prototype to that applied by a circumferential belt.
Calibrating the Sensor
V
Piezo-Resistive Sensor Schematic
Test Protocol Mount sensor
Apply compression device
Sample force measurements
Test Results
Test Applied Force (N)
Rib Belt 609Rib Belt > 800Velcro Base Only
216
Velcro + Foam 316Velcro + Foam 342Velcro + Foam 483Velcro Base Only
471
Velcro + Foam 589Velcro + Foam > 800
Conclusions and Future Considerations
Achieved comparable force (800 N) at a point with both the rib belt and our prototype.
More realistic testing analogue.
Experiment with different materials and shapes for the Velcro attachment.