Abstract: In order to provide an external corrective appliance that corrects spinal deformity through operation from outside of the body during implementation of correction and fusion of the spinal deformity using a spinal deformity correction and fusion system to improve correction force, to easily attain the correction intended by an operator, and to eliminate complexity of correction and fusion surgery implemented using the spinal deformity correction and fusion system, thereby reducing burden on the patient, the external corrective appliance includes: shaft members removably attached to corresponding right and left screw members in a pair fixed to the one vertebra, and extending toward the outside of the body of the patient; and a lateral arm member coupled to the shaft members in a pair outside the body of the patient.

Abstract: To provide a corrective appliance capable of properly assisting in correction of spinal deformity by a spinal deformity correction and fusion system while limiting damage on a rod member when the spinal deformity is subjected to correction and fusion by the spinal deformity correction and fusion system. A corrective appliance includes: a clamp member to be attached detachably to a screw member, for example, and to be arranged close to the screw member; and an auxiliary rod member to be attached detachably to the clamp member and to be used for correcting spinal deformity. This allows the corrective appliance to properly assist in correction of spinal deformity by a spinal deformity correction and fusion system while limiting damage on a rod member when the spinal deformity is subjected to correction and fusion by the spinal deformity correction and fusion system.

Abstract: To provide a bone fixation device able to firmly fix bone elements. A bone fixation device, comprising: a base section having a first space that holds a rod; a hook formed with a second space in which a bone element is accommodated together with a art of the base section; and a sandwiching part that is installed to the base section and that sandwiches the bone element which has been accommodated in the second space together with a pail of the hook, wherein the sandwiching part is shiftable allowing attachment to the bone element.

Abstract: A spinal deformity correction and fusion surgery supporting device is capable of simplifying the operative procedures of a spinal deformity correction and fusion surgery by an operator to reduce the operative time and lessen the burden on the patient and achieving a more effective correction rate by the spinal deformity correction and fusion surgery. In this supporting device, the waist and the vicinity thereof are pressed from both sides in the left-right direction by a pair of waist pressing bodies, and the chest and the vicinity thereof are pressed from both sides in the left-right direction by a pair of chest pressing body to establish a trunk balance. In this state, the pair of chest pressing bodies and the pair of waist pressing bodies are moved away from each other to apply a tensile load to spinal deformity and a state in which the spinal deformity is corrected so as to approach a correction rate by the spinal deformity correction and fusion surgery can be maintained.

Abstract: To provide a bone fixation device able to firmly fix bone elements. A bone fixation device, comprising: a base section having a first space that holds a rod; a hook formed with a second space in which a bone element is accommodated together with a art of the base section; and a sandwiching part that is installed to the base section and that sandwiches the bone element which has been accommodated in the second space together with a pail of the hook, wherein the sandwiching part is shiftable allowing attachment to the bone element.

Abstract: [Task] Provided is the spinal fixation system that facilitates surgical operations and improves reliability in stable fixation to a spine. [Means to Solve the Task] A spinal fusion system 1A includes a connector 6A (6A?) detachably connected to a rod 3, and a hook member 7A (7A?) connected to the connector 6A (6A?) and engaged with a vertebral arch. Thereby, in particular, reliability in stable fixation to the spine can be improved.

Abstract: To provide a spinal fusion system that applies a stable fixing force to a spine. In a spinal fusion system 1A, a lamina having relatively high strength in an entire vertebra can be engaged to be held from a head side and a tail side by a pair of first and second hook members 3 and 4. Consequently, a fixing force to a spine can be improved and a stable fixing force can be applied to the spine.

Abstract: Provided is a medical device whereby a burden placed on a patient in spinal deformity surgery is alleviated while facilitating the surgery. A medical device in which a chest unit 5A for supporting the chest of a patient 2 and a pelvic unit 5B for supporting the pelvis of the patient 2 are disposed side by side on a base 10, the medical device being provided with a first shifting device 15, 16 for shifting the chest unit 5A in a first direction closer to or away from the pelvic unit 5B, and a second shifting device 25, 46 for shifting either the chest unit 5A or the pelvic unit 5B in a horizontal direction orthogonal to the first direction with respect to the other of the chest unit 5A or the pelvic unit 5B.

Abstract: The present invention adopts a surgical device for correction of spinal deformity, comprising twisting means which twists the vertebra around the axis of the spine and compressing means which compresses the vertebra in a direction reducing scoliosis of the spine. It is possible to ensure a normal kyphosis state in the front-back direction relative to the spine, and at the same time, to correct scoliosis in the right-left direction, by twisting the vertebrae around the axis of the spine by the twisting means, and compressing the vertebrae in the direction reducing scoliosis of the spine by the compressing means.