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Description:
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As an intern with Byrne Medical Inc . , I took part in several development and validation
projects for medical products . A design project for a medical irrigation pump for
endoscopic procedure is the focus for my Doctor of Engineering degree . This project
represents the scope and depth of a typical design project for a medical device .
In this dissertation , a summary of motors used in current medical irrigation pumps
available in the market , as well as their flow rates , is presented . A procedure of typical
product design process is followed and a working prototype of endoscopic irrigation
pump is designed and fabricated .
The objective of the project was to design and fabricate a working prototype of a medical
irrigation pump to be used for endoscopic procedures with standard videoscopes in the
medical field . Currently there are no irrigation pumps that satisfy physiciansâ  needs . By
manufacturing their own pump , Byrne Medical would be able to select a host of the
positive features noted on other pumps and combine those features into a single pump
that fits both the technical and user needs . The author made improvements in the areas of appearance , size , usability , functionality , product life , and ability to vary motor speed ,
and therefore the flow rate .
Flow rate of the prototype was tested by measuring the amount of water it was able to
pump per minute (milliliter per minute ) . Each tubing set was attached and secured onto
the prototype unit and adjust the speed control to the maximum flow . The power switch
was turned on and the pump was running continuously for twenty seconds . Water was
collected and weighted with a digital scale . The amount of water (in pounds ) per twenty
seconds was then converted to milliliter per minute .
Physicians in the GI (Gastroenterology ) suites prefer an irrigation pump that rotates
backward when they turn the power off to prevent the sterile water from dripping . A
Multi -function Timer (model H3DE -M2 ) manufactured by Omron was selected for
future improvement . A working prototype (previously fabricated ) was tested with this
DPDT timer and the result proved the improvement was achievable . |