摘要 |
<p>PROBLEM TO BE SOLVED: To realize a head capable of correcting an abnormal twist of a vertebral column of a human body while lying down. SOLUTION: Sections 2, 3 and 4 corresponding to at least a thoracic vertebra, a lumbar vertebra and a pelvis of the human body are independently movably divided, the sections 2 to 4 can be fluctuated in a seesaw manner at a fulcrum parallel to the vertebral column of the body as a center, and elastic means each for returning the divided sections to a horizontal state are provided at both right and left sides to the fulcrum. The sections 2 and 4 corresponding to the thoracic vertebra and the pelvis are provided lower than the other section.</p> |