Super interesting report with ideas to design a breast pump that costs less than $5 for use in devleoping nations:
http://deepblue.lib.umich.edu/bitstream/handle/2027.42/111327/09_Report.pdf?sequence=1&isAllowed=y
Breast Pump for Low-Resource Setting
Prepared by Team 9
Raymond Chen
Anqi Sun
Qi Wang
Yiwen Wu
Undergraduate Engineers, University of Michigan, College of Engineering
Prepared For
Prof. Elijah Kannatey-Asibu
Department of Mechanical Engineering, University of Michigan, College of Engineering
Sponsors
U-M Laboratory for Innovation in Global Health Technology
U-M Institute for Humanitarian Technology
United Nations International Children's Emergency Fund (UNICEF)
Mentors
Prof. Kathleen Sienko
Department of Mechanical Engineering, University of Michigan, College of Engineering
Ms. Leith Greenslade
Office of the UN Special Envoy for Financing the Health MDGs
Executive Summary
The breast pump for low-resource setting project is sponsored by U-M Laboratory for Innovation in Global Health Technology, U-M Institute for Humanitarian Technology, and UNICEF; supervised by Prof. Kathleen Sienko, Ms. Leith Greenslade, and Prof. Kannatey-Asibu.
The goal of this project is to design a low cost, easy to use and clean breast pump that is suitable for use at home and work in low-resource settings.
To design a breast pump for low-resource settings, ten user requirements are addressed by sponsors, potential users, and other stakeholders. The main requirements addressed by our sponsors are easy to use, low-cost, easy to maintain, and efficient. To quantify these requirements, we generated specifications to design a manual pump with no more than 2 parts, with the manufacturing cost less than 5 dollars, and maximum pressure difference higher than 150 mmHg.
After defining the requirements and specifications, concept generation was done. A functional decomposition was generated to describe functions and sub-functions needed for the breast pump. Then, based on the decomposition and challenges, concepts were generated with focus on easy to use, low-cost, easy to clean, and efficient. Selection of the concepts was done, by scoring each concept zero to three on a Pugh chart using Decision-Matrix Method. Each of our team members rated the designs based on this chart, and the score was averaged to lower the selection bias. The six highest scored designs were then chosen, compared, and further evaluated. After much deliberation and discussion, two of the designs were combined to form one final concept. A physical mockup was also created to better demonstrate the design.
The team performed engineering analysis on our three different design drivers. Engineering analysis consisted of theoretical modeling, empirical testing, as well as mockup construction. Initial manufacturing plans, Failure Modes and Effects Analysis, and a mass-manufacturing plan were conducted as well.
The team then finalized the design as well as the prototype. Furthermore, the team completed our testing protocols. Since the team has 17 engineering specifications, the ones with the highest priorities were picked up for the validation testing. There are totally 7 validation tests corresponding to the engineering specifications.
The team 3-D printed a new transparent suction cup and completed validation testing before Design Expo. The prototype together with the report will be delivered to our sponsors, and possibly be tested in Ethiopia in summer.
http://deepblue.lib.umich.edu/bitstream/handle/2027.42/111327/09_Report.pdf?sequence=1&isAllowed=y
Breast Pump for Low-Resource Setting
Prepared by Team 9
Raymond Chen
Anqi Sun
Qi Wang
Yiwen Wu
Undergraduate Engineers, University of Michigan, College of Engineering
Prepared For
Prof. Elijah Kannatey-Asibu
Department of Mechanical Engineering, University of Michigan, College of Engineering
Sponsors
U-M Laboratory for Innovation in Global Health Technology
U-M Institute for Humanitarian Technology
United Nations International Children's Emergency Fund (UNICEF)
Mentors
Prof. Kathleen Sienko
Department of Mechanical Engineering, University of Michigan, College of Engineering
Ms. Leith Greenslade
Office of the UN Special Envoy for Financing the Health MDGs
Executive Summary
The breast pump for low-resource setting project is sponsored by U-M Laboratory for Innovation in Global Health Technology, U-M Institute for Humanitarian Technology, and UNICEF; supervised by Prof. Kathleen Sienko, Ms. Leith Greenslade, and Prof. Kannatey-Asibu.
The goal of this project is to design a low cost, easy to use and clean breast pump that is suitable for use at home and work in low-resource settings.
To design a breast pump for low-resource settings, ten user requirements are addressed by sponsors, potential users, and other stakeholders. The main requirements addressed by our sponsors are easy to use, low-cost, easy to maintain, and efficient. To quantify these requirements, we generated specifications to design a manual pump with no more than 2 parts, with the manufacturing cost less than 5 dollars, and maximum pressure difference higher than 150 mmHg.
After defining the requirements and specifications, concept generation was done. A functional decomposition was generated to describe functions and sub-functions needed for the breast pump. Then, based on the decomposition and challenges, concepts were generated with focus on easy to use, low-cost, easy to clean, and efficient. Selection of the concepts was done, by scoring each concept zero to three on a Pugh chart using Decision-Matrix Method. Each of our team members rated the designs based on this chart, and the score was averaged to lower the selection bias. The six highest scored designs were then chosen, compared, and further evaluated. After much deliberation and discussion, two of the designs were combined to form one final concept. A physical mockup was also created to better demonstrate the design.
The team performed engineering analysis on our three different design drivers. Engineering analysis consisted of theoretical modeling, empirical testing, as well as mockup construction. Initial manufacturing plans, Failure Modes and Effects Analysis, and a mass-manufacturing plan were conducted as well.
The team then finalized the design as well as the prototype. Furthermore, the team completed our testing protocols. Since the team has 17 engineering specifications, the ones with the highest priorities were picked up for the validation testing. There are totally 7 validation tests corresponding to the engineering specifications.
The team 3-D printed a new transparent suction cup and completed validation testing before Design Expo. The prototype together with the report will be delivered to our sponsors, and possibly be tested in Ethiopia in summer.
