Its also known as the Judas Chair or 'the wake' - because the device wouldn't allow the victim to fall a sleep - because certain muscles are contracted.

The device or chair was pyramid-shaped-cradle/chair, the victim was forced to sit on the cradle, in which the point was inserted in his/ her anus or vagina, this torture could last hours even days depending on certain factors like adding more weight on the victim's feet or adding oil on the device, this will indeed increase the pain and hurry the victim's death. Some will die because of infection from the device ( the device was rarely washed).