Automatic Wheelchair Cum Stretcher

In India the percentage of disabled individuals is increasing every year. Mobility aids are essential for patients for transportation and a option for walking especially in indoor and outdoor environment. Moving the patients from wheelchair to stretcher or to the medical bed is always a major issue for the attendant or helper. Understanding the several problems regarding the mobility equipment and making a better design will be a boon for the medical field and assistance for disabled individuals. There is a need to introduce such a wheelchair cum stretcher to ease the disabled patient’s mobility and to provide a nobel medical equipment in the Indian hospitals for the use. Here we are developing a system which is capable of shifting various positions (Chair, Semi-Chair and Stretcher) manually. These positions can be achieved by a lead screw connected with a hinge joint. Lead Screw translates turning motion into linear motion. Also the height of the stretcher can be adjusted using a Hydraulic jack manually. It is placed horizontally which pushes against a lever which lifts the main arm. And also there is a lid on chair which can be opened to eliminate human waste. This is a cost reducing project which helps mainly paralyzed patients to do their daily things. Hospital, airport, railway station, shoping mall, etc are the places where Wheelchair and stretcher are commonly used in. Depending upon the necessity the developed wheelchair can very easily get converted into stretcher as well as surgical table. This mechanism of transformation can be operated manually as well as automatically. Vertical rotary motion is converted into horizontal rotary motion with the help of Worm and worm wheel mechanism .The mechanism can be made manual self-driven as well as motorized operated. As compared to the available modern automatic wheel chairs the developed chair is economical.