Patent ID: 9700147
Date: 2017-07-11
CPC Classifications: A47C

Claim:
1. A sitting device for prevention of spinal diseases while sitting on the floor comprising: a padded member to support a user's buttocks and upper legs; wherein the padded member has a left side, a right side, a front side, a rear side, an undulating or wavy hypotenuse surface, and flat bottom; the undulating or wavy hypotenuse surface configured to correspond with hierarchical structure, from high to low, of a user's sacrum, coccyx, and sitting tuberosities; a thin pad extended forwardly from the padded member, wherein the thin pad provides cushioning under the knees of the user and helps keep the user's knees clean during use; and a hard block fully inserted inside the padded member, wherein the hard block is configured to assist in keeping the user's pelvis in an upright position and symmetrical during use; wherein the hard block, has a hexagonal shape that has a rear side taller than a front side; wherein the rear side is parallel to the front side; wherein the hard block is a homogeneous block made of a non-resilient material, wherein the hard block does not change rigidity, and does not tilt under impact of the user's body weight, thereby keeping the user's pelvis in the upright and symmetrical position; wherein the hard block is capable of resisting the user's body weight, without deformation; and wherein the hard block is configured so that the height of a rear portion of the hard block can fill-in the distance from the lowest point of the user's sacrum to the lowest point of the user's sitting tuberosities; and wherein the height of a front portion of the hard block is higher than the distance from the lowest point of the user's coccyx to the lowest point of the user's tuberosities of the sacrum, to ensure each part of the user's sacrum, coccyx, and sitting tuberosities is supported in order to keep the user's pelvis and sacrum upright and symmetrical, thereby preventing spinal diseases.