Guide to Wheelchairs

A basic standard manual wheelchair incorporates a seat and back, two small front (caster) wheels and two large wheels, one on each side, and a foot rest.

Wheelchairs are often variations on this basic design, but there are many types of wheelchairs, and they are often highly customized for the individual user's needs. The seat size (width and depth), seat-to-floor height, seat angle (also called seat dump or squeeze) relative to the horizontal plane, footrests/leg rests, front caster outriggers, adjustable backrests, controls, and many other features can be customized on, or added to, many basic models, while some users, often those with specialised needs, may have wheelchairs custom-built.

Transport wheelchairs are usually light, folding chairs with four small wheels designed to be pushed by a caregiver to provide mobility for patients outside the home or more common medical settings.

Various optional accessories are available, such as anti-tip bars or wheels, safety belts, adjustable backrests, tilt and/or recline features, extra support for limbs or neck, mounts or carrying devices for crutches, walkers or oxygen tanks, drink holders, and clothing protectors.

Experiments have also been made with unusual variant wheels, like the omniwheel or the mecanum wheel. These allow more directional movement options.

The electric wheelchair shown on the right is fitted with Mecanum wheels (sometimes known as Ilon wheels) which give it complete freedom of movement. It can be driven forwards, backwards, sideways, and diagonally, and also turned round on the spot or turned around while moving, all operated from a simple joystick.

1. Wheelchairs - Standard Power Wheelchairs & Manual Wheelchairs

Manual wheelchairs are those that require human power to move them. Many manual wheelchairs can be folded for storage or placement into a vehicle, although modern wheelchairs are just as likely to be rigid framed.

Manual or self-propelled wheelchairs are propelled by the occupant, usually by using large rear wheels, from 20-26 inches in average diameter, and resembling bicycle wheels. The user moves the chair by pushing on the handrims, which are made of circular tubing attached to the outside of the large wheels. The handrims have a diameter that is slightly less than that of the rear wheels. Skilled users can control speed and turning and often learn to balance the chair on its rear wheels - do a "wheelie". The wheelie is not just for show - a rider who can control the chair in this manner can climb and descend curbs and move over small obstacles.

One-arm drive enables a user to guide and propel a wheelchair from one side. Two handrims, one smaller than the other, are located on one side of the chair, left or right. On most models the outer, or smaller rim, is connected to the opposite wheel by a folding axle. When both handrims are grasped together, the chair may be propelled forward or backward in a straight line. When either handrim is moved independently, the chair will turn left or right in response to the handrim used. Another alternative is a lever-drive chair that propels the chair forwards by using a lever that is pumped back and forth. Some chairs are also configured to allow the occupant to propel using one or both feet instead of using the rims.

The electric-powered wheelchair was invented by George Klein who worked for the National Research Council of Canada, to assist injured veterans during World War II.[1]
Woman in motorized wheelchair.

Four general styles of electric powered chairs (EPWs) exist: rear, center, front wheel driven or four wheel driven. Each style has particular handling characteristics. EPWs are also divided by seat type; some models resemble manual chairs, with a sling-style seat and frame, whereas others have 'captain's chair' seating like that of an automobile. EPWs run the gamut from small and portable models, which can be folded or disassembled, to very large and heavy full-featured chairs (these are often called 'rehab' chairs).

EPWs may be designed specifically for indoor use, outdoor use, or both. They are generally prescribed for persons who have difficulty using a manual chair due to arm, hand, shoulder or more general disabling conditions, and do not have the leg strength to propel a manual chair with their feet, a practice not generally recommended by most Allied Health Professionals (AHPs). They may also be issued to those with cardiovascular conditions. A person with full function of the arms and upper torso will generally be prescribed a manual chair, or find that their insurance will not cover an electric power wheelchair.

The user typically controls speed and direction by operating a joystick on a controller. Many other input devices can be used if the user lacks coordination or the use of the hands or fingers, such as chin controls and puff/sip scanners for those with C2-3 spinal cord lesions or head injuries (the user blows into a tube located near the mouth, which controls the movement of the chair). This controller is the most delicate and usually the most expensive part of the chair. EPWs can offer various powered functions such as tilt, recline, leg elevation, seat elevation, and others useful or necessary to health and function.

EPWs use electric motors to move the wheels. They are usually powered by 4 or 5 amp deep-cycle rechargeable batteries, similar to those used to power outboard boat engines. These are available in wet or dry options; currently dry cell batteries are more popular[citation needed]. Many EPWs carry an on-board charger which can be plugged into a standard wall outlet; older or more portable models may have a separate charger unit.

Special Discounts on Electric Scooters

Adapting the built environment to make it more accessible to wheelchair users is one of the key campaigns of disability rights movements and the Americans with Disabilities Act of 1990 (ADA). The most important principle is Universal design - that all people regardless of disability are entitled to equal access to all parts of society like public transportation and buildings. A wheelchair user is less disabled in an environment without stairs.

Sometimes it is necessary to add structures like ramps or elevators in order to permit people in wheelchairs (and those using crutches, canes, walkers and so forth, or those with unsupported walking disabilities) to use a particular building. Other important adaptations are powered doors; lowered fixtures such as sinks and water fountains; and toilets with adequate space and grab bars to allow the person to maneuver himself or herself out of the wheelchair onto the fixture. In the United States, most new construction for public use must be built to ADA standards of accessibility.

The construction of low floor trams and buses is being encouraged, whereas the use of paternosters in public buildings without any alternative method of transportation has been criticized due to the lack of access for wheelchair users. Modern urban architecture now incorporates better accessibility for people with disabilities.

In many countries such as UK the owners of inaccessible buildings are advised to keep a lightweight portable wheelchair or scooter access ramp on hand to make premises disabled friendly.

Learn more about Wheelchair Ramps