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Spinal column side convex three-dimentional correcting device

A scoliosis and three-dimensional technology, applied in medical science, surgery, etc., can solve problems such as screw removal, nerve injury, difficult axial surface derotation, etc., and achieve the effect of avoiding damage

Inactive Publication Date: 2005-03-23
王岩 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the process of inserting orthopedic rods into nails and hooks one by one, screw removal and hook displacement are easy to occur. The orthopedic operation is difficult, requiring many auxiliary devices, and there is obvious stress concentration, which is easy to cause nerve damage.
In the prior art, there is a device using shape memory alloy rods for correction, but it is only close to two-dimensional correction design, and cannot effectively achieve three-dimensional correction, that is, it only has partial correction in the coronal and sagittal planes, which is difficult to achieve Derotation of the axial plane, therefore, is less used in the correction of modern scoliotic deformities

Method used

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  • Spinal column side convex three-dimentional correcting device
  • Spinal column side convex three-dimentional correcting device
  • Spinal column side convex three-dimentional correcting device

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Embodiment Construction

[0018] The technical scheme of the present invention will be described below in conjunction with the accompanying drawings.

[0019] Such as figure 1 , figure 2 As shown, the three-dimensional correction device for scoliosis of the present invention comprises a pedicle screw 2 with an upper opening (see figure 2 ), a nickel-titanium alloy orthopedic rod 1 , a transverse connection 4 and a nail cap 3 after shape memory heat treatment. The pedicle screw 2 is provided with an upper opening, and the upper opening can realize dynamic cooperation with the orthopedic rod 1. The pedicle screw 2 is fixed on both sides of each segment within the surgical correction range of scoliosis. The heat-treated and low-temperature shaped nickel-titanium alloy orthopedic rods 1 are respectively placed in the upper openings of the pedicle screws 2 on both sides of the deformed spine, and are moderately locked by the screw caps 3 . Low-temperature shaping uses ice cubes placed on the wound to d...

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Abstract

A 3D corrector for the lateral protrusion of spine is composed of the pediculus arcus vertebrae scrows with open fixed to both sides of deformed spine, shape-memory Ni-Ti alloy rods inserted in the open top of said screw, and nuts or locking said alloy rods in the open top. Its transverse connection of Ni-Ti alloy rod is performed by use of clamps and nuts.

Description

technical field [0001] The invention relates to a medical correction device, in particular to a correction device for treating scoliosis. Background technique [0002] Various types of scoliotic deformities represented by idiopathic scoliosis seriously endanger the physical and mental health of patients. How to choose an appropriate correction method according to the location and degree of deformity has not been well resolved so far. The current treatment methods usually use pedicle screws and hook systems to be placed on both sides of the deformed spine, and the orthopedic rods are placed on the screw and hook systems one by one by combining the rod rotation and translation technology when placing the rods on the side of the orthopedic side. Finally, the final orthopedic is completed through technologies such as intersegmental distraction, compression or translation, and then a support rod is placed on the auxiliary side, and finally a horizontal connection is placed betwe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/56A61F5/01
Inventor 王岩
Owner 王岩
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