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Redesigning a self-catheterization aid to become more intuitive: An investigation done through literature studies and user testing
KTH, School of Industrial Engineering and Management (ITM), Machine Design (Dept.).
KTH, School of Industrial Engineering and Management (ITM), Machine Design (Dept.).
2015 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesisAlternative title
Att designa om ett hjälpmedel för självkatetrisering till att bli mer intuitivt (Swedish)
Abstract [en]

Each year hundreds of thousands of women in Europe need to catheterize themselves instead of urinating the usual way, because of diseases or injuries. However, self-catheterization is hard for a lot of women due to the location of the urethra, and they need some type of aid to help them. The design company MMID in the Netherlands developed a concept with a mirror and a light, which is attached to a toilet seat. Though, it was noticed that it was too hard to handle for the users, hence the authors were asked to improve the user friendliness with the product. Since the intuition aspect was the largest problem they decided to focus on intuition. MMID’s original prototypes were tested by patients and continence nurses to get relevant information that only real users can give, and by mixed women without troubles, to get an insight in the intuition aspect. The nurses and the patients tested the prototypes and were observed, whereupon they took part in a semi-structured interview and a questionnaire, respectively. During the intuition tests the women’s interactions with the prototypes were filmed, and they answered a short questionnaire. The films were then analyzed. The tests showed that the product was very hard to understand and that it gave a feeling of being unstable. This gave the project the focus to make the product easy to open up, without having to assemble it before each use. All important aspects were gathered and several ideation sessions were performed. The results were put together into three concepts and 3D printed prototypes. These models were tested by women interacting with them to see their intuitive actions, which were also filmed. The women also participated in semi-structured interviews. Based on these results a concept choice was made where the simplest solution with one pivoting point was chosen. The concept was further developed and functional prototypes and non-functional prototypes were made. The non-functional models were tested for only intuition among random women, the same way as before. The functional models were tested by patients and nurses at four hospitals in the Netherlands, also these tests were similar to the ones in the first round. The overall results were positive and the product had been significantly improved; a lot thanks to the fact that it did not need to be assembled before it could be used. The biggest negative aspect was that a signifier for opening the product was missing.

Abstract [sv]

Varje år behöver hundratusentals kvinnor i Europa katetrisera sig själva istället för att urinera som vanligt, på grund av sjukdomar eller skador. Självkatetrisering är dock krångligt för många kvinnor på grund av placeringen av urinrörets öppning. Designföretaget MMID i Nederländerna tog fram ett koncept med en spegel och en lampa som fästs på toalettsitsen för att hjälpa dessa kvinnor. Det upptäcktes dock att detta koncept var svårförstått och således ombads författarna att förbättra användarvänligheten hos produkten. Då intuitionsaspekten hos produkten var det största problemet bestämde de sig för att fokusera på intuitionen. MMIDs ursprungliga prototyper testades av patienter och urologisköterskor för att få relevant information som bara riktiga användare kan ge, samt av blandade kvinnor utan åkommor för att få inblick i intuitionsaspekten. Sköterskorna och patienterna testade prototyperna och observerades, varpå de deltog i semistrukturerade intervjuer respektive fyllde i ett frågeformulär. Under intuitionstesterna filmades kvinnornas interaktion med prototyperna, varpå de svarade på ett kort frågeformulär. Filmerna analyserades sedan. Testerna visade bland annat att produkten var väldigt svårförstådd samt gav en känsla av att vara ostadig. Detta gav projektet fokuset att skapa en produkt som kan öppnas upp på ett enkelt sätt utan att behöva monteras ihop innan varje användning. Alla viktiga aspekter sammanställdes och flertalet idégenereringar genomfördes. Resultaten från dessa sattes ihop till tre koncept, vilka överfördes till 3D-printade modeller. Modellerna testades genom att kvinnor fick interagera med dem varpå deras intuitiva handlingar observerades. Detta spelades in på video och kvinnorna ombads även att svara på frågor i en kort semistrukturerad intervju. Baserat på dessa resultat gjordes ett konceptval där den enklaste lösningen, med en rotationspunkt, valdes. Efter detta utvecklades konceptet vidare och funktionella samt icke-funktionella prototyper tillverkades. Dessa prototyper testades i en tredje testomgång, där de icke-funktionella prototyperna testades för enbart intuition av godtyckliga kvinnor, på samma sätt som tidigare. De funktionella prototyperna testades av patienter och sköterskor på fyra sjukhus i Nederländerna, likt första testomgången. De övergripande resultaten var positiva och produkten var signifikant förbättrad, mycket tack vare att den inte behövde sättas ihop innan den kunde användas. Den största negativa aspekten var att det saknades en indikator som underlättade öppnandet av produkten.

Place, publisher, year, edition, pages
2015. , 86 p.
Series
MMK 2015:97 MCE 327
Keyword [en]
intuition, self-catheterization, CISC, design, user testing, medical aid
Keyword [sv]
intuition, självkatetrisering, RIK, design, användartester, hjälpmedel
National Category
Mechanical Engineering
Identifiers
URN: urn:nbn:se:kth:diva-180949OAI: oai:DiVA.org:kth-180949DiVA: diva2:897614
External cooperation
MMID
Supervisors
Examiners
Available from: 2016-01-27 Created: 2016-01-26 Last updated: 2016-01-27Bibliographically approved

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