Embedded Files
Prototyping Timeline:
Prototype 1&2: The Design of pouches
Prototype 1&2: The Design of pouches
ABOUT THE DESIGN:
Prototype 1 designed the pouches to hold a maximum of 2500mL of liquid.
Prototype 2 added wide funnel at the top of the pouch to aid in fluid collection.
Prototype 3: The Snaps Design
Prototype 3: The Snaps Design
ABOUT THE DESIGN:
The metal snaps as a 'tear away mechanism' proved difficult to use. While tearing the pouch away, the snaps would not separate. This caused multiple problems including tearing the surrounding plastic, and causing leaks in the pouch. After multiple trials, this design was considered an unsuccessful prototype.
Prototype 4: The Velcro Design
Prototype 4: The Velcro Design
ABOUT THE DESIGN:
Another 'tear away mechanism' idea involved Velcro. The Velcro design required incredible amounts of strength to tear the pouches from the drape. Since the Velcro was stronger than we wanted, it was considered as an unsuccessful prototype.
We also tried using the Velcro to seal the pouch, but the strips of Velcro were bulky so we decided to try something else. (see prototype 6: Double sided tape)
prototype 5: Perforation Design
prototype 5: Perforation Design
ABOUT THE DESIGN:
A third attempt at a 'tear away mechanism' was a perforation method. This method was able to hold the weight of 2500mL for 24 hours without any damages on the pouches or drape. The perforations also made it easy to tear the pouch from the drape. This design was considered a successful prototype.
Prototype 6: The Double Sided tape Design
Prototype 6: The Double Sided tape Design
ABOUT THE DESIGN:
This design uses double-sided tape to seal the pouch. The tape folds over the lip of the pouch and seals it using the tape. Multiple trials were conducted to determine if the tape would seal the pouch at full capacity. This design was considered an successful prototype.
Prototype 7: the Final Design
Prototype 7: the Final Design
ABOUT THE DESIGN:
Using the successful prototypes, the final design incorporated:
A funnel for fluid collection, large pouches to hold 2500mL, perforations to remove pouches, flap with double sided tape to seal the pouches.
Additional added features include: calibration markings for easy fluid measurement and thumb markings to indicate where to hold when reading the measurements.
Testing Results:
Pouches were able to successfully hold 2500mL of water without leaking, breaking, tearing, or pulling away from the drape.
Pouches were able to withstand fluids at a temperature of 100F without affecting pouch integrity and without leakage.
Fluid flowed over the chux pads towards the pouches.
The calibration markings are an accurate method of determining fluid levels in the pouches.
Calibration data of 4 subjects for markings 50 to 1000 mL on a pouch. Most of the data collected falls below 1mm deviation from the mean.
Most individuals, on average, were less than 0.3mm deviation from the mean. One individual was an outlier with 0.7283 mm average deviation from the mean.
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