Long-term bedridden patients such as stroke, burn, major surgery and spinal cord injury，Due to immobility or incapacity，The nursing staff should turn over and take care of the skin in time，Slight negligence is hip, back and other parts，Will be oppressed for a long time，It causes poor circulation and tissue death, which can lead to "pressure ulcers".，Become the most common and intractable medical problem for patients who are bedridden for long periods of time。

Pressure sores (bed sores) are a ticking time bomb that can delay healing for weeks or cause sepsis, amputation or death。If pressure ulcers (bedsores) can not be effectively treated, the harm to the patient's body is no less than cancer, not only harm the body and cause medical burden and waste。In fact, as long as patients and their families decompression sores (bedsore) wound。And thorough implementation of preventive measures, such a catastrophe is not inevitable。