Sittvagn
Product Design / Design for Children / DFM / Cost Analysis
In hospitals, parents experience difficulties transporting young children around during an IV infusion. Apart from keeping their children entertained constantly, parents need to wheel both the stroller and the IV stand, as well as carry all necessary supplies.
Sittvagn is a solution that eliminates the discordance between the patient’s stroller and IV stand during transport via the fusion of the two components.
(2022)
In-hospital Stroller with an iv stand Customer Needs
To uncover the needs on the market, we interviewed several parents to see what to take into consideration during the concept generation phase.
Essentials:
Durable
Comfortable
Ample Storage
Limited Access to Medical Supplies for Children
Critical:
Easy to Move
Easy Access to Medical Supplies for Caretakers
Needs:
Child friendly design
“The stroller should be aesthetically pleasing… Of course, it should have ample and accessible storage for kid’s stuff.”
“The most important thing for me is good, sturdy wheels”
“This device should look engaging, like something that comes out of a playground.”
Concept Development
We wanted to create a stroller that adapts an organic shape with considerations to human ergonomics. We thought the shape could be more attractive to small children and help them to get over their fears.
We took an initial shot at CADing a very rough “all in one” CAD model with Solidworks. We referenced the rough CAD moving forward in discussions about fine details of the model.
After many iterations, we were satisfied with how “Sittvagn” looked in the end.
To make our concept came alive, we rendered the design with vibrant colors.
IV Stand:
Maximized symmetry
Snap fit pole cover
Self-locating slider
Design For Assembly Considerations
Stroller Body:
Poka Yoke for frame alignment
Reduced part count by combining seat and back into singular part
Maximized symmetry
Self-aligning storage basket
CAD Exploded View & Process Design
Seat Frame: Material: ABS Color: Pantone 551 C | #A3C7D2 Process: Injection molded Draft: 1 degree Uniform Wall thickness
Seat: Material: Polyurethane Process: Molded Density: 0.03 to 0.05 G/CM3 Attachment: Adhesive
Basket: Materials: ABS Color: Pantone 11-0601 TPX Process: Injection Molded Draft: 1 degree Uniform Wall Thickness
Stroller Body
IV Stand top cover and base: Materials: ABS Color: Pantone PMS 373 C Process: Injection Molded Draft: 1 degree Uniform Wall Thickness
Pole: Material: Stainless Steel Process: Extruded
Handle: Material: Aluminum Process: Extruded
IV Stand
Product Specification
Cost Analysis
Overhead: 25% Total cost: (low/high): $ 79.47/$95.2
Cost Breakdown Model
Target Production Cost
Total cost: (low/high): $ 79.47/$95.2
Non-Recurring Model
Potential Cost Reduction Cost Analysis