Fusion door opening fixing device and spinal internal fixing system

A fixing device and fixing plate technology, applied in the field of medical devices, can solve the problems of insufficient vertebral plate fit, poor fusion stability, etc., and achieve the effects of reducing the irritation of surrounding tissues, maintaining consistency, and achieving stability

Pending Publication Date: 2021-10-08
PEKING UNIV THIRD HOSPITAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, after a large number of surgical practices, the existing fusion-opening titanium plate structure has the problems of poor fusion stability and insufficient fit to the vertebral arch plate.

Method used

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  • Fusion door opening fixing device and spinal internal fixing system
  • Fusion door opening fixing device and spinal internal fixing system
  • Fusion door opening fixing device and spinal internal fixing system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0088] Such as Figure 1-3 As shown, this embodiment provides a fusion door opening fixing device, which includes a fixing plate body 1, which is an integral structure. The fixing plate body 1 includes an upper fixing plate 11, a vertical arc plate 12, a transverse arc plate 13 and a lower fixing plate 14 connected in sequence, and the vertical arc plate 12 is connected with the transverse arc plate 13 A first brace 15 is provided at the position, and a second brace 16 is provided at the connection between the transverse arc-shaped plate 13 and the lower fixing plate 14 . Wherein the different height specifications of the vertical curved plate 12 can be between 4-8mm.

[0089]The fixing plate body 1 can be made of pure titanium or titanium alloy, and the plate thickness is between 0.4-1.0 mm.

[0090] The lower fixing plate 14 is provided with a second fusion screw 141 , and the second fusion screw 141 passes through the lamina of the vertebral body 6 at the current level an...

Embodiment 2

[0102] Such as Figure 5 As shown, this embodiment provides a fusion door opening fixing plate, which includes a fixing plate body 1, and the fixing plate body 1 is an integral structure. The fixing plate body 1 includes an upper fixing plate 11, a vertical arc plate 12, a transverse arc plate 13 and a lower fixing plate 14 connected in sequence, and the vertical arc plate 12 is connected with the transverse arc plate 13 A first brace 15 is provided at the position, and a second brace 16 is provided at the connection between the transverse arc-shaped plate 13 and the lower fixing plate 14 . Wherein the different height specifications of the vertical curved plate 12 are between 4-8mm.

[0103] The fixed plate body 1 can be made of titanium alloy or pure titanium, and the thickness of the plate is between 0.4-1.0mm.

[0104] The lower fixing plate 14 is provided with a second fusion screw 141 , and the second fusion screw 141 passes through the lamina of the vertebral body 6 a...

Embodiment 3

[0117] Such as Figure 7 and Figure 8 As shown, this embodiment provides a fusion door opening fixing device, which includes a fixing plate body 1 and a fusion plate 2. The fixing plate body 1 is an integral structure, and the fusion plate 2 can be used for fusion and reinforcement on the opposite side. The fusion plate 2 can be double holes The fusion plate is provided with two first fusion holes 22 arranged side by side, and the first fusion holes 22 are used together with the first fusion screws 21 . The fixing plate body 1 includes an upper fixing plate 11, a vertical arc plate 12, a transverse arc plate 13 and a lower fixing plate 14 connected in sequence, and the vertical arc plate 12 is connected with the transverse arc plate 13 A first brace 15 is provided at the position, and a second brace 16 is provided at the connection between the transverse arc-shaped plate 13 and the lower fixing plate 14 . Wherein the different height specifications of the vertical curved pl...

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Abstract

The invention provides a fusion door opening fixing device and a spinal internal fixing system. The fusion door opening fixing device comprises a fixing plate body and an optional fusion plate, wherein the fixing plate body comprises an upper fixing plate used for fixing an upper vertebral plate at the door opening position of the vertebral plate, a vertebral plate door opening supporting plate playing a supporting role and a lower fixing plate used for fixing a lower vertebral plate at the door opening position of the vertebral plate, the lower fixing plate is provided with a second fusion hole, a second fusion screw is arranged in the second fusion hole, and the second fusion screw penetrates out of the current-stage vertebral body and is fixed to the next-stage vertebral body; the fusion plate is fixed to the current-stage vertebral body and located on the opposite side of the lower fixing plate, a first fusion hole is formed in the fusion plate, a first fusion screw is arranged in the first fusion hole, and the first fusion screw penetrates out of the current-stage vertebral body and is fixed to the next-stage vertebral body. The fusion screw is adopted to realize fixation of the vertebral arch plate and the next stage of vertebral arch plate, rigid fixation between facet joints is realized while stable support is maintained, and favorable conditions are provided for fusion between vertebral bodies.

Description

technical field [0001] The invention belongs to the technical field of medical devices, in particular to a fusion door-opening fixation device and a spinal internal fixation system. Background technique [0002] In the treatment of cervical spinal stenosis symptoms or multi-segment cervical spondylotic myelopathy and other diseases, fusion open-door titanium plates are often used for fixation. The advantage of fusion titanium plate fixation with open door is that a stable bridging structure can be formed between the raised lamina and the ipsilateral lateral mass through the fixed plate body, and rigid support can be formed on the open door side, and the spinal structure can be maintained after surgery. position for instant stability. The fusion of the door-opening titanium plate can also improve the stability of the door-axis side, which is beneficial to the bone healing of the door-axis side and prevents further loss of the cervical spine's physiological curvature. Howeve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/44A61B17/70A61B17/80
CPCA61F2/4455A61B17/7059A61B17/7091A61B17/808
Inventor 孙宇张雪东甄超张勋
Owner PEKING UNIV THIRD HOSPITAL
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