And an attempt to make the head of a patient comfortably and unshakably rested on the headrest is realized by forming a center recess in the interior member of the main headrest of a cushionlike mass of soft material and also forming raised portions on the left and right of the recess and additionally curving {HEAD ~ the end sides} of {TAIL ~ neck sides} of the headrest base rearwards 
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And an attempt to make the head of a patient comfortably and unshakably rested on the headrest is realized by forming a center recess in the interior member of the main headrest of a cushionlike mass of soft material and also forming raised portions on the left and right of the recess and additionally curving { HEAD ~ the end sides } of { TAIL ~ neck sides } of the headrest base rearwards
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