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Wheelchair |
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| wheelchair |
| Definition of wheelchair: device used for mobility by people for whom walking is difficult or impossible |
| Synonyms of wheelchair: device used for mobility |
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| A wheelchair is a device used for mobility by people for whom walking is difficult or impossible, due to illness or disability. Basic types: Manual. Wheelchairs that are human-powered (by the rider). Also known as self- propelling. Many are designed so that they can also be pushed by another person. Electric. Usually powered by a rechargeable battery. Some are convertible (by removing the motor and changing the wheels) to manual. Transport chairs. Wheelchairs that can only be pushed by another person, having all four wheels of equal size, usually approximately 8 inches in diameter, instead of two large in the rear (usually approximately 22 -24 inches) and two small 8 inch wheels in the front. It typically consists of a seat and back supported on two large wheels on an axle attached towards the back of the seat and two small wheels near the feet, though there are often small additional features to prevent toppling or to assist mounting curbs. Wheelchairs come in many sizes and colors and can be highly customized with several options including seat size (width and depth), seat to floor height, footrests/legrests, and much more. A person moves by pushing with his/her hands circular bars on the outside of the large wheels with a diameter that is slightly less than that of the wheels, or by actuating motors, usually with a joystick. Experiments have also been made with unusual variant wheels, like the omniwheel or the mecanum wheel. These allow more directional movement options. Disabled athletes use streamlined sport wheelchairs for sports that require speed and agility, such as basketball, rugby, tennis and racing. |
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