| 摘要 |
The present invention relates to a crutch which easily replaces indoor and outdoor rubber stoppers using a gear. According to the present invention, rubber stoppers used outdoors can be replaced by rubber stoppers for indoor usage by using the gear of a supporting axis and a linear sawtooth since two rubber stoppers are placed on the top and bottom parts of the supporting axis, thereby reducing the usage of a wet tissue or damp towel and facilitating an easy handling by a patient. [Reference numerals] (AA) Indoor;(BB) Outdoor |
