Comfortable orthopedic chair for prevention of spinal diseases

Abstract

A chair comprises a seat and a seat back made of non-resilient materials.

The seat has a shape that matches the natural contours of an occupant's buttocks, thighs, and upper legs, wherein: The seat's concave backward portion connects to the concave lowest portion of the said seat back, creating a dedicated concave zone that contours the occupant's buttocks closely; the seat's concave backward portion has in its center a small hump that contours tightly an occupant's sacrum and coccyx if his buttocks are fitting inside the dedicated concave zone; the seat's forward portion has a wide W-shape that contours the occupant's upper legs: the two concave zones of the seat's W-shaped forward portion contours the back sides of the occupant's upper legs, the center zone of the seat's W-shaped forward portion is convex and snuggles the occupant's thighs; the left side and right side of the seat's W-shaped forward portion are convex so that they contour the outer sides of the occupant's upper legs; the seat is inclined backwardly.

The seat back tilts backward to stay at an angle of 135 degrees to the seat and contours the occupant's back, wherein: The seat back's lowest portion is concave to contour the occupant's buttocks; the middle portion that is convex to contour the lumbar vertebrae; the upper portion that is concave to contour the thoracic vertebrae; the top is a headrest to provide support to the occupant's head; the left and right edges of the seat back are convex so that the occupant's back cannot bend left or right.

Description

RELATED APPLICATIONS[0001]This application is a continuation-in-part of application No. PCT / IB2011 / 053859 filed on 03 Sep. 2011 with WIPO and application No. 13262636 filed on 2 Oct. 2011 with USPTO. The two applications have the same content.FIELD OF THE INVENTION[0002]The present invention generally relates to a chair, and in particular, to an orthopedic chair that is comfortable to use while being able to prevent spinal diseases including lumbar kyphosis, thoracic kyphosis, sacrum and coccyx misalignment, and herniated disc.BACKGROUND OF THE INVENTION[0003]Data from the British Chiropractic Association says that 32% of the population spends more than 10 hours a day seated. Together with the long working hour, incorrect seating postures lead to serious spinal diseases. Another research from the association shows that 51% of Brits suffer from some form of back pain. Given that, the role of correct seating positions cannot be clearer; it prevents spinal diseases and reduces back pai...

AI Technical Summary

Benefits of technology

[0016]Here, a proper sitting posture is defined as a posture in which the occupant sits on the seat of the said chair in such a way that his buttocks fit inside the dedicated concave zone, his sacrum and coccyx are contoured tightly by the small hump in the center of the seat's concave backward portion, his two upper legs fit inside the two concave zones of the seat's W-shaped forward portion, and his back stays at an angle of 135 degrees to his upper legs and is contoured comfortably by the seat back. When an occupant is sitting in this proper sitting position, less strain is placed on the spinal disks and associated muscles and tendons. Given that the seat and the seat back are ergonomically de...

Problems solved by technology

W-shaped forward po...

Images