Currently stretcher used most canvas or spring steel wire for support, but also useful stretcher hard material such as steel, wood and other made. The disadvantage of these stretchers is not easy to carry; soft stretcher can not use as a simple first aid station in case of fracture of the wounded need to be fixed with a splint or substitutes wound before transporting; hard stretcher, been able to avoid the soft stretcher deficiencies, but because of its bulky and heavy, not convenient to use and carry.

Chinese utility model patents stretcher board 42,036,824 color two to five parallel edges bent as telescopic rails, stacked constitute telescopic structure has become a both for transporting the sick and wounded, and easy to carry, and can be used as a simple first aid station hard multifunction stretcher.

It consists of three stretcher plate and a pair of wheels. Each stretcher board has two parallel edges bent at right angles, each two adjacent stretcher plates are used. L-shaped coupling member is coupled as one. Wherein the right end of the intermediate plate by a stretcher two mutually inverted "L" shaped coupling sleeve buckle coupled to each other, the left end of the intermediate plate stretcher solely by coupling a coupling member, the coupling member are welded to the outside of the stretcher hemming plate, left stretcher board also set up a pair of small rollers, which allows the left end plate stretcher stretching more lightweight and comfortable. Spring pins and corresponding thereto with dowel holes for fixing every two adjacent stretcher board to extend or collapsed state. A pair of wheels provided on the right end of the stretcher board, easy one-person transport sick and wounded; avoid tilted stretcher flat on the floor due to the wheel caused by the addition of one pair of foldable stretcher left support. Stretcher does not extend the handle, but the rolling stretcher board with a handle hole, except at the ends, in the middle also rolling stretcher board with a handle for easy carrying patients and wounded by four, each with a stretcher board some lightening holes by certain regular arrangement in order to reduce the weight of the stretcher. In addition, on a stretcher board folding one pair of pillow pole hole, you can put a small pillow pillow cover lever, so that the sick and wounded more comfortable; infusion rack holes on the hem, when necessary, install drip stand, so as not to care officers waved infusion bottle toil; stretcher collapsed, its straps are available hooks behind his back.

This stretcher can be plastic or light metal stretcher plate making, in order to further reduce weight, easy to carry. Simple structure, easy to manufacture and use, are in good condition and field emergency first aid tool.