DESIGN AND CONSTRUCTION OF ICU/REHABILITATION ADJUSTABLE BED USING LOCALLY SOURCED MATERIALS

The focus of this project was the development of an ICU/Rehabilitation adjustable bed for the hospital and home environment. The project was initiated with the desire to develop an innovative, effective and inexpensive mechanism that would require an electrical supply. The design was performed systematically using various methods, procedures, techniques and materials to aid the process. One of the method used is carpentry, which was used to make the bed framework and the adjustable floor, which is 3 feet wide and 6 feet long and 28 inch (backrest), 1 feet (buttocks section), 14 inch (thigh section) and 19 inch (legrest section). Welding was used to make the arm, strut, crossbar and pivot and also screwing belts were used to hold the different parts together. The materials used for this project are: an electrical linear actuator, made from locally sourced materials (jack, steel pipes and 12 volt DC motor), wood, screws, bolts and nuts, foam, mattress, remote control, 24 volt adapter, nails and hinges. A total cost of 75,000 naira was used for the overall design and construction process. The final design uses an electrical linear actuator made from locally sourced materials to move the top adjustable sections. A six bar linkage mechanism delivers a combined back and head adjustment.

TABLE OF CONTENTS

CONTENT                                                                                                                 PAGE

Title page                                                                                                                  i

Certification                                                                                                             ii

Dedication                                                                                                                iii

Acknowledgement                                                                                                iv

Abstract                                                                                                                    v

Table of Contents                                                                                                   vi-viii

List of Figures                                                                                                          ix

List of Tables                                                                                                            x

CHAPTER ONE: INTRODUCTION

1.1            Background of the Study                                                                         1-3

1.2            Statement of the Problem                                                                       3-4

1.3            Objectives/purpose of the Study                                                          4

1.4            Significance of the Study                                                                         4-5

1.5            Scope or Delimitation of the Study                                                       5

1.6            Operational Definition of Terms                                                            5-6

CHAPTER TWO: LITERATURE REVIEW

2.1      History of Rehabilitation/Intensive Care Bed                                     7-11

2.2      Modern Features of ICU/Rehabilitation Beds                        12-17

2.3      Intensive Care Unit (ICU)                                                                         17-27

2.4. A modern hospital bed                                                                                27-28

CHAPTER THREE: MATERIALS AND METHOD

3.1 Materials                                                                                                           29-30

3.2      Method                                                                                                         31-34

3.3      Circuit Diagram                                                                                           34-37

3.4      Cost Analysis                                                                                                37

CHAPTER FOUR: RESULTS

4.1. Technical Specifications                                                                               39

4.2. Principle of Operation                                                                                  39-40

4.3. Safety Instructions                                                                                        41-43

4.4. Maintenance                                                                                                   43-44

4.5. Troubleshooting                                                                                            45

CHAPTER FIVE: CONCLUSION AND RECOMMENDATION

5.1. Conclusion                                                                                                       46

5.2. Recommendation                                                                                          46-47

REFERENCES                                                                                                           48-49

APPENDIX I                                                                                                             50

APPENDIX II                                                                                                            51