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Dynamic stabilizing device for vertebra

A technology of dynamic stability and spine dynamics, applied in fixers, internal fixators, medical science, etc., can solve problems such as the emergence of spinal non-fusion technology and intervertebral disc degeneration

Inactive Publication Date: 2012-10-03
IND TECH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, spinal non-fusion techniques began to sprout due to the limitation of motion caused by the fusion of the vertebrae, which caused the adjacent intervertebral discs to degenerate prematurely due to excessive pressure

Method used

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  • Dynamic stabilizing device for vertebra
  • Dynamic stabilizing device for vertebra
  • Dynamic stabilizing device for vertebra

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0107] see figure 1 , The spinal dynamic stabilization device 100 of this embodiment mainly includes a supporting element 110 , four fixing elements 120 and four connecting elements 130 .

[0108] The support element 110 can be made of elastic material, biocompatible material, porous material, multilayer material, shape memory material or damping material. When the supporting element 110 is made of elastic material or elastic mechanism, it may have a concentric, cross-braided, multi-layer composite, radial or artificial intervertebral disc structure. In addition, the supporting element 110 can also have a hollow columnar, porous, sponge, multi-layer composite, injection-filled or combined structure. The supporting element 110 is combined with the connecting element 130, fixed or maintained dynamically fixed by the fixing clip 150, Its dynamic fixation can be from complete fixation, single-point activity, to two-point activity.

[0109] Such as figure 2 As shown, each fixin...

no. 2 example

[0117] In this embodiment, the same elements as those in the first embodiment are marked with the same symbols.

[0118] see Figure 10 , the spinal dynamic stabilization device 100' of this embodiment mainly includes a supporting element 110, two fixing elements 120 and two connecting elements 130.

[0119] Similarly, each connecting element 130 is connected between the supporting element 110 and each fixing element 120, which can be used to fix the relative position of the supporting element 110 and each fixing element 120, and the connecting element 130 is combined with the fixing element 120, which can For complete fixation or dynamic fixation, its dynamic fixation can range from one-point activity to two-point activity.

[0120] As for other component structures, features or operation modes of the present embodiment are the same as those of the first embodiment, in order to make the description of the present case clearer and easier to understand, repeated descriptions t...

no. 3 example

[0122] see Figure 12A , the fixing element 120 is fixed in the vertebral segment V, and there may be at least one groove 127a above the fixing element 120, and the groove 127a can be snapped into more than one connecting element 130 or supporting element 110, and the fixing element 120 has an inner The groove 127b can be locked into the internal screw 128a to fix the connecting element 130. The connecting element 130 can be made of rigid material or rigid mechanism, elastic material or elastic mechanism, viscoelastic material or viscoelastic mechanism or the above materials and mechanisms. The connecting element or the supporting element can be a combination of a cord 132a and a spreader 132b (which can be in the shape of a sleeve, a column, a plate, or other shapes) (such as Figure 12A shown), it can also be the design of spring 132c or viscoelastic machine groove (such as Figure 12B shown).

[0123] And the connection element 130 or the support element 110 is fixed on t...

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PUM

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Abstract

The invention discloses a vertebra dynamic stabilizing device which is suitable for maintaining the physical height between adjacent vertebra segments. Each vertebra segment is provided with a spinous process and two symmetrical vertebral pedicles. The vertebra dynamic stabilizing device comprises a support element, at least one fixing element and at least one connection element. The support element is arranged between the same spinous processes. The fixing element is fixed in one of the vertebra segments by one of the same vertebral pedicles. The connection element is connected between the support element and the fixing element and is used for fixing the relative position of the support element and the fixing element, so as to fix the relative position of the same vertebra segments.

Description

technical field [0001] The present invention relates to a spinal dynamic stabilization device, in particular to a spinal dynamic stabilization device capable of restoring the normal physiological height between the vertebrae and providing dynamic stability between the vertebrae. Background technique [0002] Generally speaking, spondylolisthesis and stenosis of spinal canal have become common diseases in modern people. Spondylolisthesis mostly occurs in frequent heavy workers or athletes. The cause of the disease is that the intervertebral disc (disc) is injured due to pressure or external force, so that one vertebra (vertebral column) of the spine (vertebral column) is relative to the other vertebrae. Sliding forward, and the sliding vertebrae compress the central nerve (central nerve) or its nerve root (nerve root), which will cause the patient to feel pain. Pathologically, stenosis of the spinal cavity is mainly caused by the narrowing of the spinal cavity caused by agin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B17/70A61L31/00
Inventor 翁育诗游家伟林溢泓吴怡静游雅任陈文哲阙山璋黄英宜
Owner IND TECH RES INST
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