Wall-C

3,175 views
3,261 views

Published on

Medical Design project of Design & Engineering course. Autumn semester 2013/2014

0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total views
3,175
On SlideShare
0
From Embeds
0
Number of Embeds
2,390
Actions
Shares
0
Downloads
4
Comments
0
Likes
0
Embeds 0
No embeds

No notes for slide

Wall-C

  1. 1. CONTEXT Of study Design & Engineering Master’s programme is a joint programme by Tallinn University of Technology and Estonian Academy of Arts to combine students from various backgrounds to develop the framework for a strong interdisciplinary collaboration. Besides gaining multi-disciplinary experience the students are gaining a firm understanding of contemporary entrepreneurial process and practice with industrial partners. The programme provides engineers and designers to combine in the design process, managers to lead creative development teams integrating design and technology, entrepreneurs to notice possibilities on the market for users. Of the project Design & Engineering 2013/2014 is focused on field of Medicine, investigating the issues in healthcare design, including the needs of doctors, nurses, caretakers and of course the patients. Creating better solutions for rehabilitation and treatment for patients at hospitals as well as home care is the main aspect. To create a better healthcare environment, students investigate and tried to improve several projects in product development and service design. Students investigate working flow at the departments of Põhja-Eesti Regionaalhaigla to identify hospital life, systems and services. The aim of the research is to improve medical care at the hospital with emphasis on safety and dignity. The project groups conducted several visits to the hospital, interviewed by hospital staff and investigate the hospital itself, also create interaction with several companies which could provide assistance in their design process. Design and Engineering’s project report. Autumn 2013 1
  2. 2. Team ……………………………………………………………………………………………………......3 Tutors ……………………………………………………………………………………………...……….3 Introduction ………………………………………………………………………………………….....4 User research …………………………….………………………………………………………….....5 Hands on research …………………………………………………………………………………...6 Existing Designs ..…….…………………………………………………………………………….....7 Wheelchair & Components ………………………………………………………….……….....8 Basic dimensions for wheelchair .…………………………………………….….………....10 Wheelchair Problems ..………………………………………………………………………......11 Characteristics to fulfill ..………………………………………………….……..………………13 Generating Sketches & Concept Ideas ……………………………………….………....14 Concept Selection ………………………………………………………………………………….17 Work in Progress ............................................................................................................19 Creating Process .............................................................................................................20 Prototyping …………………………………………………………………………………….……...21 Rendering ..........................................................................................................................23 Conclusion & Further Development….....................................................................24 Technical Data & Sheets ............................................................................................25 Design and Engineering’s project report. Autumn 2013 2
  3. 3. People Involved The Team Sema Aksu Kristjan Jagomann Guillaume Speurt Ender Özgün Architect Turkey Mechanical Engineer France Mechanical Engineer Estonia Mechanical Engineer Turkey The lecturers and consultants Professor Martin Pärn, MA, Estonian Academy of Arts Head of Design in D&E Martin Pärn, MA, Estonian Academy of Arts Head of Design in D&E Ruth-Helene Melioranski, Lecturer, Tallinn University of Technology Martin Pärn, MA, Estonian Janno Siimar, Creative Director & Service Designer Academy of Arts Head of Design in D&E Henrik Herranen, Researcher, Tallinn University of Technology Janno Nõu, Designer Design and Engineering’s project report. Autumn 2013 3
  4. 4. INTRODUCTION Our content and the topic of the semester project consist of designing a product for transporting the patients who are staying in the hospital from one place to another, by the hospital staff. Based on the aim; we conducted several visits to Põhja Eesti Regionaalhaigla (Estonia´s Biggest Hospital) to observe the current situation about the patients, doctors, nurses, caretakers and hospital itself. From the visits and observations our group and head of the department; Prof.. Martin Pärn agreed on usage of the wheelchairs would be a great pick to dig in and improve. Therefore, our further interest is to be focused on wheelchairs and navigating them. Initially we tried to analyse the object from every perspective possible, such as hygiene, storage, usage from the patient and pusher perspective, protection and etc. After the discussion and using design selection tools we came to the conclusion of an interest in the practical storage of a wheelchair. On the further pages you will find deeper content about the process. Design and Engineering’s project report. Autumn 2013 4
  5. 5. USER RESEARCH As mentioned in the introduction, the whole designing process began with the observation of the environment and its users that are composed by the hospital staff, the patients and the visitors. After attending a general introduction of the hospital life at Põhja-Eesti Regionaalhaigla; we were allowed to move into the buildings, to observe and to take notes. There we realized several issues from interviews with the caretakers and patients about the wheelchair and the usage of it. General outcomes of the interviews and observations were: 1. 2. 3. 4. 5. Wheelchairs are generally being used by caretakers Patients learn quickly to use the wheelchair by themselves Elderly patients show to have more drawbacks with using and navigation As a design, some parts are harder to use, some are relatively easy Storage of the wheelchairs is an issue to think more; even there were lost wheelchairs no one knows where they were. Design and Engineering’s project report. Autumn 2013 5
  6. 6. HANDS ON RESEARCH Doing observations and interviews are crucial to start the research phase. Yet it is not fully enough to understand the user experience. Hence we also paid a visit to Astangu Disability Information and Resource Centre to examine the different types of wheelchairs and had a chance to use them against the various road obstacles. Interviewed with physical therapist in the centre to comprehend the behaviour and needs of a typical wheelchair user. Additional equipment invested to understand their daily requirements. This opportunity provides us to get to know the various ergonomics, designs and materials of wheelchairs according to different needs. Design and Engineering’s project report. Autumn 2013 6
  7. 7. EXISTING DESIGNS Researching also means to investigate and examine existing wheelchair and transport chair designs. It is crucial to present the most notable ones to compare our ideas and concepts. Design and Engineering’s project report. Autumn 2013 7
  8. 8. WHEELCHAIR & COMPONENTS A wheelchair is a transportation system made up from many parts. Its complexity may differ from one to another according to the option and degree of freedom it give as well as the comfort and easy-to-use provided to the user. Footrests Support your feet and lower legs. They can be fixed, folding or swing-away and come in many different styles. Armrests These are places to rest your arms when you’re not moving. They can be wraparound, full-length or desk-length; fixed or height-adjustable; removable or flip-back. Fit is important because armrest position can alter the way you propel your wheelchair. Many individuals choose not to have armrests because they don’t like the way they look or they get in the way of propulsion. Design and Engineering’s project report. Autumn 2013 8
  9. 9. Wheel locks They act as parking brakes to stabilize your wheelchair when you transfer to other seats or want to remain in a particular spot. They may be push-to-lock or pull-to-lock, positioned low or high on the wheelchair, and retractable or not, depending on what the user finds easier. Wheel locks can get in the way during propulsion and add weight to the wheelchair. For this reason many individuals choose not to have wheel locks, relying on their hands to keep their chair still. Not having wheel locks can increase the risk of the chair moving during a transfer, however, which you should consider when making this decision. Tires Tires are most commonly air-filled (pneumatic) and therefore lightweight. They also require maintenance and can puncture. If you maintain them, this is usually the best choice. Pneumatic tires may instead be filled with solid foam inserts; these won’t puncture but are slightly heavier and don’t perform as well. Solid tires are low-cost and no-maintenance, but make for an uncomfortable ride and are not usually recommended. Backrest Sling backrests are the most common, but provide little postural support. Adjustable tension backrests can provide more support and can be adjusted over time. Rigid backrests provide the best support, but may make it more difficult to collapse the chair. The weight and height of the backrest are important. In general, the lighter the better, with carbon fibre backrests are a nice option. If support is not needed, a lower backrest is better as it does not get in the way of pushing Cushions Come in a huge and ever-changing array of different types and materials and comprise a major topic unto itself. While pressure relief is an important consideration when selecting a cushion, you should also keep in mind that you want a firm base and a lightweight cushion. A firm base refers to feeling stable, not sliding on the cushion when reaching for an object or propelling your chair. Push-rims There are a variety of push-rims with different friction coatings and shapes that may assist with propulsion and reduce the risk of injury to the hand. Design and Engineering’s project report. Autumn 2013 9
  10. 10. BASIC DIMENSIONS FOR WHEELCHAIR To start designing we have to find a standard dimension suggest by some website and organization of disabled people. These values should guarantee proper size and comfort for most of the people, patient. The current regular wheelchair and its components are evolving around similar dimensions. And the reachability area of the user and its dimensions were crucial to examine and fully understand the interaction of the movement with the environment or the structure of the hospital. Patients must be navigated easily in the hospital meaning; they have to reach the wheelchair from bed or the opposite situation, they must be prevented to hit their arms and legs to corridors, it has to have dimensions for wide range of heighted and weighted people since they cannot be individual based designs due to hospital and their huge range of patients. Design and Engineering’s project report. Autumn 2013 10
  11. 11. THE WHEELCHAIR PROBLEMS We made our selection of the simplest wheelchair, which is the most common and spread around the world, holds on to 1933, Herbert A. Everest and HC Jennings invention and of course that is widely being used in hospitals. We named out the features that we consider problematic for both patients and nurses so our solution will provide a real plus-value. Main Problems: 1. Large wheel that can hit the nurses legs 2. General dimension of the wheelchair unfolded and space they consume 3. Time and process to fold the wheelchair is long and unnecessary complicated Things to modify for the patient 1. 2. 3. 4. General comfort Wheelchair is way lower than the bed Feet are exposed to obstacles No space of additional equipment or personal objects Design and Engineering’s project report. Autumn 2013 11
  12. 12. The Storage Problem The Navigation Problem Design and Engineering’s project report. Autumn 2013 12
  13. 13. CHARACTERISTICS TO FULFILL Observing the wheelchair use in hospital environment where it can be an obstacle itself in the corridors or in rooms and experiencing it by ourselves creates the list that we can improve about it. Care taker 1. Easy to push 2. No obstacle to the legs 3. Cleaning Patient 1. Easy to sit in, and to leave it (from bed, standing) 2. Provide protection to the patient (safety issues) Environment 1. Hospital: calm, logically planed, relatively quiet, secure 2. Flat floor: no big obstacle, mostly easy rolling surface, no slop 3. Open and closed door: Door came in front of the wheelchair, can be dangerous 4. Hygienic issues: By definition a hospital is a place to get healthy and not to develop new diseases. Germs have to be fought, the chair must be clean Use 1. 2. 3. 4. 5. 6. Cleaning, easy for maintenance, anti-bacterial Can be under the shower, water-proof materials Easy maintenance, clean parts Can be stored, easy to fold in the hospital rush during dealing with the patient Absence of bag or hanging equipment; uncomfortable for patients, caretakers Marked code; unable to identify the departments which own the wheelchair. Design and Engineering’s project report. Autumn 2013 13
  14. 14. GENERATING SKETCHES & CONCEPT IDEAS After the certain goals had been set, we have moved to generating new ideas according to the needs we set or being futuristic and thinking outside of the box. CONCEPT 1 Concept 1 has been generated for solving the patience reach on wheelchair by adjusting the seat height by pulling the handles which enables sliding mechanism. Design and Engineering’s project report. Autumn 2013 14
  15. 15. CONCEPT 2 Concept 2 is relatively easier approach to store the wheelchairs as supermarket trolleys. Solving storage problem by pushing them into each other is the key feature. The correct angularity of the seats and profiles allow them to store by stacking them. CONCEPT 3 Concept 3 is the first approach towards storage. It is side folded chair by the help of bearings and shafts. Design and Engineering’s project report. Autumn 2013 15
  16. 16. CONCEPT 4 Concept 3 has been generated due to messy environment of the hospital corridors caused of the storing wheelchairs randomly or carefully. The design has the hanger concept where you can hang the wheelchair on it and have more space for the patients and doctors and the other equipment on the corridor. CONCEPT SELECTION Design and Engineering’s project report. Autumn 2013 16
  17. 17. Since our team generated different ideas and concepts, it is crucial to follow one of them and work on it. So the most logical solution was to rank them according to certain criteria such as simplicity, material selection, user intervention, fold-ability and mainly the problem that they solve. Also about this design process, we evaluate the selection based on real time interviews and observations. Based on the several interviews with the caretakers and nurses whom deal the wheelchair highlighted as mentioned below;    Patience is quite intelligent to use it. They don’t have major problems with the wheelchair. Complaining about the obstacles, it occurred in the corridor WALL-C & THE SOLVED PROBLEM Wall-C is the compact wheelchair which is designed to fold in easiest way and store by hanging it on the wall at hospitals efficiently. While storing will be more practical and comfortable, navigate in the corridors with bed in hospital is also will stop being a problem. After choosing the main concept, we moved on a detailed 3D designing for the SOLIDWORKS environment to understand the mechanism fully and optimize it. The design has changed a couple of times to require the optimum needs according to the users need, comfort and technical requirements. Design and Engineering’s project report. Autumn 2013 17
  18. 18. FOLDING LOCKING On this project the handle get a more important role than on regular wheelchair. In addition of moving it is now meant to fold and lock the system on the wall. As seen previously the chair is folded when it has hit a wall and the user keep pushing it toward it. Here the locking idea was to use handle to guarantee the fixation on the wall. On the wall is a rode on which the handle is mounting. To lock the folded wheelchair it is just necessary to turn the handle to the top. Design and Engineering’s project report. Autumn 2013 18
  19. 19. WORK IN PROGRESS THE START To understand if the mechanism works or not, the easiest way is to start to build the cardboard prototype which gives you the idea, feeling and the freedom to manipulate the ideas to improve them. From the cardboard we saw that our idea will work and it is really comfortable to fold the wheelchair and with the right material selection it is easy to lift it and hang it. Design and Engineering’s project report. Autumn 2013 19
  20. 20. CREATING PROCESS To create a concept, firstly we have to determine which type of elements going to be used and how they will behave through our conceptual idea. Therefore, testing in real-scale is important and we started to build a wood structure for Wall-C project where we studied in Mektory which belongs to our university. This was the first prototype attempt for our concept. The idea of gaining more space for the patients’ usage not the wheelchairs is seen in real scale. Design and Engineering’s project report. Autumn 2013 20
  21. 21. PROTOTYPING From the first prototyping experience we understood that our structure will work. So it was the time to move on more rigid structure. The second and final prototyping is again conducted in Mektory, with aluminium profiles and tubes. We used driller, grinder, rivet gun, and several different technics to build our product. Design and Engineering’s project report. Autumn 2013 21
  22. 22. Design and Engineering’s project report. Autumn 2013 22
  23. 23. RENDERING Design and Engineering’s project report. Autumn 2013 23
  24. 24. CONCLUSION & FURTHER DEVELOPMENT As a conclusion, we can clearly say that idea itself covered the solutions that we wanted to apply according to the problems we set during the research phase. You can see on the images presented how much space had been saved and with the different handle positions we can store many more wheelchairs than usual. As a further development we have to work on a prototype and improve it mainly on footrest part and the strength and deciding all parts material. Strength tests and real user test will be conducted after reaching the optimal prototype. Design and Engineering’s project report. Autumn 2013 24
  25. 25. TECHNICAL DATA & SHEETS Design and Engineering’s project report. Autumn 2013 25
  26. 26. B POS. QTY.: DESCRIPTION: NR.: 1 2 Square tube 40x20x2 2 2 Square tube 40x20x2 3 3 Square tube 60x40x2 LENGTH, ANGLE 1: ANGLE 2: mm: 520 0.00 20.00 548 20.00 40.00 400 0.00 0.00 0 3 1 14 310 1 0° 3 8 483 520 3 2 871,29 11 4x ALL THRU 54 3 2 34 1 42 B 510,09 0 440 400 Drawing: SECTION B-B 0 20 40 Material: Tolerance: ISO 2768 Aluminium alloy Drawn: Supervisior: Date: Welding Seams 2 Class: C Kristjan Jagomann G. Speurt Weight (kg): 2.43 Project Wall-Chair, D&E 2013 spring Title: 12.01.2014 Front wheel support Sheet: 1/1 Format: A4 Drawing number: 01.01.001 Scale: 1:5
  27. 27. Welding Seams Class: C 3 0 4 20 0 1 2 0 6,5 2 45° 401,28 0 7 31 ° 135 0 39,50 141,50 50 6, 22 10 0 40 40 20 0 10 LL A 3x RU TH Note: * Other piece is symmetrical 486,21 Drawing: POS. QTY.: DESCRIPTION: NR.: 1 1 Square tube 40x20x2 2 1 Square tube 40x20x2 3 1 Square tube 40x20x2 Tolerance: Aluminium alloy Supervisor: Date: Kristjan Jagomann G. Speurt Weight (kg): ISO 2768 Materjal: Drawn: LENGTH, ANGLE 1: ANGLE 2: mm: 141.5 45.00 22.50 317 0.00 0.00 226.5 22.50 0.00 0.37 Project: Wall-Chair, D&E 2013 spring Title: Back wheel support 12.01.14 Sheet: 1/1 Format: A4 Drawing number: 01.01.002 Scale: 1:5
  28. 28. POS. QTY.: DESCRIPTION: NR.: 1 1 Round tube 22x2 2 1 Square tube 40x20x2 LENGTH, ANGLE 1: ANGLE 2: mm: 431.12 0.00 0.00 428 0.00 0.00 8 303 40 30 14 0 R3 3 81 22 20 0 325 428 20 15 119 10 150 TH 3 R3 RU A LL Drawing: 2 1 Note: *Internal bending radius 11mm * Other piece is symmetrical 263 Material: Tolerance: ISO 2768 Aluminium alloy Drawn: Supervisior: Date: Welding Seams Class: 2 C Kristjan Jagomann G. Speurt Weight (kg): 0.37 Project Wall-Chair, D&E 2013 spring Title: 12.01.14 Seat handle Sheet: 1/1 Format: A4 Drawing number: 01.01.003 Scale: 1:3

×