A kind of related supplemental restraint system with what specific demand person of this creation system,It includes a main body and a safety aid,Main body system sits to lie and sees and examine for user； Safety aid system set a fixed part,One movable part and a limiting unit,The position of hand of the fixed what main body of fixed part close to user； The hand of the fixed what user of movable part； Limiting unit links fixed part and movable part,And there is the first active length； When the mouth of user carries out dental diagnostic with dental instrument,Can limit hand can only activity in the range of the first active length of what,And mouth can not be touched,Reach the safety aid for preventing improper touch of hand and causing dental instrument injury user. Therefore the advantages that this case has both the limits device that safety can be improved, crispation type structure can reduce space and user relatively possesses dignity and effect.本創作係有關一種用於特殊需求者之輔助約束裝置，其包括一主體及一安全輔助裝置，主體係供使用者坐躺看診；安全輔助裝置係設一固定部、一活動部及一限制部，固定部固定於主體接近使用者之手部的位置；活動部固定於使用者之手部；限制部連結固定部與活動部，並具有第一活動長度；當使用者之嘴部以牙科器具進行牙科診療時，可限制手部只能於第一活動長度之範圍內活動，且無法接觸到嘴部，達到防止手部不當碰觸而造成牙科器具傷害使用者之安全輔助裝置。故，本案兼具可提高安全性之限制裝置、捲縮式結構可減少空間與使用者較具有尊嚴等優點及功效。
