Chair for correcting an improper alignment of spinal vertebrae and method for correcting an improper alignment of spinal vertebrae by means of the chair

摘要

A chair and a method for using the chair is disclosed which can be used easily and comfortably and also treat an improper alignment of spinal vertebrae. The chair has a height adjustable seat assembly for seating the user on the seat assembly; a backrest assembly for supporting a back of the user, which can be height adjusted separately from the seat assembly; a headrest assembly for resting a head of the user on the headrest assembly, the headrest assembly being assembled with the backrest assembly; and a backrest frame for supporting the backrest assembly and the headrest assembly, the backrest frame being fixed to the seat assembly, the backrest assembly moving along the backrest frame when the height of the backrest assembly is adjusted