Abstract: An orthopedic pillow comprises a padded member which has a hard block fully inserted inside. The padded member is made of resilient materials. The padded member's shape is roughly similar to that of a rectangular or hexagonal block; however, if looked right from its right or left side, the padded member has a symmetric or asymmetric bell shape. The length of the long side of the padded member is roughly equal to an adult's body's width. The hard block is made of non-resilient material. The hard block is able to tolerate, without rupturing and/or deformation, the gravity force on a mass of about 140 kg with a shape and size similar to those of a person's body. The shape of the hard block and of the padded member are similar, and their dimensions are proportional. The length of the long side of the hard block is also roughly equal to an adult's body's width. Both the padded member and the hard block have a flat bottom side.

Abstract: A sitting device for prevention of spinal diseases comprises a padded member, a thin pad extended forwardly from the padded member, and a hard block fully inserted inside the padded member. The padded member has a generally hexagonal shape, and is made of resilient materials. The hypotenuse surface of the padded member is undulating economically. The hard block is made of a non-resilient material, and is able to tolerate, without rupturing, the gravity force on a mass of an adult's body with a shape and size similar to those of the adult's buttocks. The hard block is inserted completely inside the right angle area of the padded member. The height of the front side of the hard block is greater than the distance from the lowest point of the sitter's coccyx to the lowest point of his tuberosity of the sacrum. This will always keep the sacrum in a position higher than that of two seating areas keeping the pelvis upright and symmetric.

Abstract: An orthopedic pillow comprises a padded member which has a hard block fully inserted inside. The padded member is made of resilient materials. The padded member's shape is roughly similar to that of a rectangular or hexagonal block; however, if looked right from its right or left side, the padded member has a symmetric or asymmetric bell shape. The length of the long side of the padded member is roughly equal to an adult's body's width. The hard block is made of non-resilient material. The hard block is able to tolerate, without rupturing and/or deformation, the gravity force on a mass of about 140 kg with a shape and size similar to those of a person's body. The shape of the hard block and of the padded member are similar, and their dimensions are proportional. The length of the long side of the hard block is also roughly equal to an adult's body's width. Both the padded member and the hard block have a flat bottom side.

Abstract: An orthopedic sandal comprises a sole and six mounted straps. Made of rubber that generates high friction, the straps pass through the edge of the sole to create 12 one to three centimeter-long extensions underneath the sole. The 12 extensions generate extra friction when the sandal contacts with the ground. The sole consists of an outer layer and an inner layer. Made of rubber mixed with nylon fibers, the outer layer has an empty inside divided sidewardly into 4 compartments. Each compartment is divided horizontally into two by a thin rubber layer. Made of soft rubber, the inner layer is a pouch divided into three compartments filled with special soft gel that has physical stability under the change of temperature and pressure. The inner layer is pre-shaped to ergonomically fit the wearer's sole and is also able to reshape to well fit the wearer's particular sole.

Abstract: A sitting device for prevention of spinal diseases comprises a padded member, a thin pad extended forwardly from the padded member, and a hard block fully inserted inside the padded member. The padded member has a generally hexagonal shape, and is made of resilient materials. The hypotenuse surface of the padded member is undulating economically. The hard block is made of a non-resilient material, and is able to tolerate, without rupturing, the gravity force on a mass of an adult's body with a shape and size similar to those of the adult's buttocks. The hard block is inserted completely inside the right angle area of the padded member. The height of the front side of the hard block is greater than the distance from the lowest point of the sitter's coccyx to the lowest point of his tuberosity of the sacrum. This will always keep the sacrum in a position higher than that of two seating areas keeping the pelvis upright and symmetric.

Abstract: An orthopedic sandal comprises a sole and six mounted straps. Made of rubber that generates high friction, the straps pass through the edge of the sole to create 12 one to three centimeter-long extensions underneath the sole. The 12 extensions generate extra friction when the sandal contacts with the ground. The sole consists of an outer layer and an inner layer. Made of rubber mixed with nylon fibers, the outer layer has an empty inside divided sidewardly into 4 compartments. Each compartment is divided horizontally into two by a thin rubber layer. Made of soft rubber, the inner layer is a pouch divided into three compartments filled with special soft gel that has physical stability under the change of temperature and pressure. The inner layer is pre-shaped to ergonomically fit the wearer's sole and is also able to reshape to well fit the wearer's particular sole.

Abstract: A sitting device for prevention of spinal diseases comprises a padded member, a thin pad extended forwardly from the padded member, and a hard block fully inserted inside the padded member. The padded member has a generally right triangular shape, and is made of resilient materials. The hypotenuse surface of the padded member is undulating ergonomically. The hard block is made of a non-resilient material, and is able to tolerate, without rupturing, the gravity force on a mass of an adult's body with a shape and size similar to those of the adult's buttocks. The hard block is inserted completely inside the right angle area of the padded member. The height of the front side of the hard block is greater than the distance from the lowest point of the sitter's coccyx to the lowest point of his tuberosity of ischium. Both the padded member and the hard block have a flat bottom side to ensure stability.

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

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

Abstract: A cervical pillow for treatment of cervical spine diseases includes a padded member made of resilient materials such as foam, rubber, or cotton. The padded member has a rectangular flat bottom side, vertically flat left and right sides, a rounded front side, a thin back side, and a wavy top side that has a flat portion connecting to the front side, a slightly concave portion in the middle, and a very convex portion connecting to the back side. The cervical pillow further includes a nearly rectangular solid block made of high-strength materials such as plastic or compressed rubber. This solid block is embedded within the padded member along its back side and under the very convex portion of its top side.