Overview of Status of Analysis, Design, Fabrication, Tests, etc.
Met with Dr. Kalmaz to get feedback and redesigned the plug.
Tested the 3D printed flexible plug. The seal was found to be too lose.
Accomplishments from Previous Week
Printed out a flexible plug.
Goals for Next Week (list names after each item). Use specific and measurable objectives.
Print out the newest iteration.
Sponsor Comments from Last Meeting and Actions Taken to Address these Comments (indicate date of comments and if via email or in person)
Dr. Kalmaz wants the flap to be as large as the bottom flange. Rectum/colon is about 5cm, or about 2 inches, which is the diameter of the bottom flange. If the flap can flex, it can be inserted/removed easily. So we undo the Stuart suggestion.
Also we don't need an insertion device, if the doctor can just flex the flap inwards and insert the air retention plug. Also undo this Stuart suggestion.
Dr. Kalmaz wants a plug that is shorter so the doctor operating can have a larger degree of freedom.
Dr. Kalmaz remarked that the seal which the scope would pass through feels perfect, although it's tighter than a normal human's sphincter.
However, we feel the seal is too lose, because water was leaking out with minimal pressure during our test and the diameter of the analog we were using to imitate the scope is slightly larger than the actual scope by 0.014 inches, which we're not sure if it would make a difference.
Instructor Comments from Last Meeting and Actions Taken to Address these Comments (indicate date of comments and if via email or in person)
Nam's hand drawn pictures were awesome.
Contact Dr. Monica Kim of UCI for information on casting PDMS.
Comments from Other Students in the Class (indicate date of comments and if via email or in person)
N/A
Risks and Areas of Concern
Casting: We don't know how. Need expertise.
Resources or Information Required but not Available
Casting information
Schedule
Describe upcoming milestone
Update Gantt chart.
Budget (list amount spent and amount remaining)
$1.19 for risk reduction seals
$12.28 for first flexible plug prototype.
$16.42 for second prototype iteration