For patients with lower extremity dysfunction, acute injury and
postoperative patients, appropriate AIDS should be used during acute symptoms and rehabilitation to relieve acute symptoms, prevent re-injury and promote healing. In general, the tools used to implement lower limb assistance mainly include walker, crutch and cane.

In the hospital, family, there are always those old people with
inconvenient legs, or patients, the toilet is always very inconvenient at night, in the case of no one to care at night, the elderly want to go to the toilet by themselves is very difficult. Toilet tools are common items in the home and in hospital. Considering the actual needs of the special population, the reform of toilet tools has become a concern.

Crutches are commonly used before walking independently after a
lower limb injury or surgery. The use of crutches is very careful, and the wrong use of crutches can not only cause additional injuries, but also increase the risk of falling. However, many people do not know how to use this seemingly simple tool correctly, or encounter many problems in the use of crutches, resulting in mobility difficulties.

Feeding the old man, carrying the old man to the toilet, carrying the old man to take a bath...... It is common to believe that many families have disabled or semi-disabled elderly people. Over time, both the old man and his carers became exhausted.