Essay On Wheelchair

CAPTER-1

INTRODUCTION

1.1 Overview

A wheelchair is a chair fitted with wheels. The device comes in variations allowing either manual propulsion by the seated occupant turning the rear wheels by hand, or electric propulsion by motors. There are often handles behind the seats to allow it to be pushed by another person. Wheelchairs are used by people for whom walking is difficult or impossible due to illness, injury, or disability.

People who have difficult sitting and walking often make use of a wheel bench. A basic manual wheelchair incorporates a seat, foot rest and four wheels: two, caster wheels at the front and two large wheels at the back. The two larger wheels at the back usually have hand rims; two metals or plastic circles approximately 3/4” thick. The hand rims have diameter normally only slightly smaller than the wheels they are attached to. Most wheelchairs have push handles at the top of the back to allow for manual propulsion by a second person. Other varies of wheelchair are often variations on this basic design, but can be highly customized for the user’s need. Such customization may encompass the seat dimensions, height, seat angle (also called seat dump or squeeze),

Transport wheelchairs are usually light, folding chairs with four small wheels. These chairs are designed to be pushed by a caregiver to provide mobility for patients outside the home or more common medical settings. Experiments have also been made with unusual variant wheels, like the omini wheel or mechanism wheel. These allow for a broader spectrum of movement. The electric wheelchair shown on the right is fitted with Mecanum wheels (sometimes known as Ilon wheels) which give it complete freedom of