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Development of the Next Generation Sling Cross-Bar: In regards to bariatric medical care
2016 (English)Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

This report is written by Liza Persson and Thérése Östergren as a result of a master thesis that was conducted during the fall of 2013 and ended in early 2014. The master thesis covers 30 credits and is a final project of a Master Program in Industrial Design Engineering with an orientation towards Product Development at Luleå University of Technology. The project dealt with development of a new four-point sling bar for the bariatric market, for the client company Liko, a Hill-Rom company in Luleå, Sweden. Liko is specializing in developing solutions for safe lifting and transportation of disabled people. A large part of their market is in the US, where facility guidelines demand that all systems for bariatric medical situations must have a lifting capacity of 800 lb (363 kg) from 2014. Today, Liko do not have a lift with this capacity in their assortment, which is why they initiated the current project with the objective of upgrading one of their current sling bars to match the new guidelines. The project was performed with a product development process developed based on both LIKOs and Industrial Design Engineering at Luleå University of Technology’s (LTU) guidelines. The process consisted of setting up requirements and limitations, an analysis of Liko’s and their competitors’ products, research about relevant theory, such as ergonomics, safety, visual design, materials and manufacturing methods, idea development, iterative concept developments and implementation. The idea and concept development phases were carried through by different methods, such as brainstorming, sketching, making clay models, having a workshop and making CAD-models in NX. During the idea development, ten concepts were presented and later reduced to two. Those two concepts were further developed and eventually reduced to one final concept. This were developed in detail and modeled in the CAD-program NX. STP.-files of the model were then sent to manufacturing and delivered back for construction of a prototype. The prototype were assembled, tested and analyzed. After that, the current project was presented to Liko for possible further development. One of the biggest priorities in the beginning of the project was for the bar to have a lifting capacity of 363 kg. Halfway through the project the focus changed to making a certain function of the new sling bar work. The final concept has a unique feature that makes it possible to substitute both sizes of the current sling cross-bar. This way, Liko’s productions costs will decrease and caregivers will not have to change the sling bar as often; preventing heavy lifting that can lead to strain injuries.

Place, publisher, year, edition, pages
2016. , 96 p.
Keyword [en]
Keyword [sv]
Teknik, Fyrpunktsbygel, kryssbygel, överviktsbehandling, mobil Lyft, taklyft, produktutveckling, Civilingenjör Teknisk Design
URN: urn:nbn:se:ltu:diva-49600Local ID: 6ecc6abb-b470-4d37-b03a-8ced0b476ba3OAI: diva2:1022947
External cooperation
Subject / course
Student thesis, at least 30 credits
Educational program
Industrial Design Engineering, master's level
Validerat; 20140813 (global_studentproject_submitter)Available from: 2016-10-04 Created: 2016-10-04Bibliographically approved

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