Development of Mobility Aids: Horizontal Lift for Bariatric Healthcare and Quick Release for Switch of Lifting Bars
Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
The project was initiated with a planning phase where a project plan describing the project phases and their stages was established. The aim of the project was to develop two products, a Quick Release and Horizontal Lift. A Quick Release is a coupling used in the switching of lifting bars in a mechanical person lift system in cares homes, homes or hospitals. A Horizontal Lift is a lifting bar with 10 fastening points for sling loops, used to transfer a patient in horizontal position in hospitals. The Quick Release is required to carry 350 kg and the Horizontal Lift is required to carry 454 kg as well as comply with the needs of bariatric patients. The main user of the Quick Release is a single nurse or caregiver. The main users of the Horizontal Lift are two nurses and a bariatric patient. According to this two product specifications were established.After the planning phase a Situation Analysis was conducted using methods such as field studies, interviews, user tests and participatory observations. This increased understanding of the problems and helped identify the needs in the area of use. Needs discovered for the Quick Release was for instance needs for a jointed movement and a secure connection. Needs discovered for the Horizontal Lift was for instance needs for easy handling and transportation. Theories used to understand the situation, plan the process and design the products are theories regarding bariatric healthcare, ergonomics and anthropometry, bariatric anthropometry and body shapes, product design in healthcare, universal design, usability and design language. Around 70 articles were read in the Literature Review.Ideas were generated using methods of brainstorming, analogy thinking and design workshops. The result of this was numerous sketched concepts for both products. With further development using CAD and soft models the concepts were screened and narrowed down to one concept for each product. Selection matrices were used to guide the concept selection.By CAD-modelling, FEM analysing, building of functional models and disassembly of existing products the two concepts were developed to fully dimensioned concepts, the T-Hook and the FlexiBar. The T-Hook decreases the installation height by 53.4 mm and allows a jointed movement of a minimum of 15 degrees in all directions. The FlexiBar is adjustable to a smaller size in between use but accomplishes a width of 110 cm and a length of 150 cm in protracted state. Its flat bars enable movable hooks and surround the shape like a protective ledge. Both products are an improvement both functionally and aesthetically to the preciously existing solutions.
Place, publisher, year, edition, pages
2014. , 135 p.
Teknik, Bariatrivård, planlyft, snabbkoppling, plana överflyttningar, patientöverflyttningar, lyftbygel, produktdesign, produktutveckling
IdentifiersURN: urn:nbn:se:ltu:diva-45982Local ID: 39f18492-8219-4c75-bf97-f8ebf5263299OAI: oai:DiVA.org:ltu-45982DiVA: diva2:1019290
Subject / course
Student thesis, at least 30 credits
Industrial Design Engineering, master's level
Validerat; 20140810 (global_studentproject_submitter)2016-10-042016-10-04Bibliographically approved