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Adjustable interface type supporting and fixing fusion device achieving zero incisure of anterior thoracolumbar spine

A fusion device, thoracic and lumbar spine technology, used in spinal implants and other directions, can solve problems such as damage to the periosteum, inability to spread, and difficulty in bone growth, achieving less impact on the thorax and breathing, easy insertion and removal, and reduction of pneumothorax. effect that occurs

Active Publication Date: 2016-01-27
WEST CHINA HOSPITAL SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The previous titanium cage and artificial vertebral body did not have the concept of interfacial fusion, nor did they have the function of fixation. Other anterior thoracolumbar fixation devices in the past only had the function of fixation. They should be used in combination with titanium cages and artificial vertebral bodies, and there is no One is zero notch, and needs to expose the vertebral body in the adjacent stage, damage the periosteum (the periosteum is the tissue that nourishes the bone), ligate the blood vessels, affect the blood supply of the bone, eventually affect the growth and healing of the bone, and also affect the blood supply of the spinal cord. Increased risk of neurological impairment and paralysis in patients
[0003] In addition, the traditional titanium cage cannot be adjusted or stretched, and requires additional instrumentation (such as plate fixation), and the bilateral bone must grow up to 6 cm before it can heal; and the artificial vertebral body also needs to grow up to about 6 cm before the bone fusion can be imagined. However, it is known how long and difficult it is for the bone to crawl and grow 6cm, and because of the plate fixation, the bone growth will be more difficult after the blood supply of the vertebral body in the adjacent stage is damaged.

Method used

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  • Adjustable interface type supporting and fixing fusion device achieving zero incisure of anterior thoracolumbar spine
  • Adjustable interface type supporting and fixing fusion device achieving zero incisure of anterior thoracolumbar spine
  • Adjustable interface type supporting and fixing fusion device achieving zero incisure of anterior thoracolumbar spine

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Experimental program
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Effect test

Embodiment 1

[0032] Such as figure 1 As shown, the adjustable thoracolumbar anterior zero-tangential interface type support and fixation fusion device disclosed by the present invention includes a connecting sleeve 2, a fusion component 1, a gripper 9 and a rotator 15, and one end of the connecting sleeve 2 has a left-handed internal thread , the other end of the connecting sleeve 2 has a right-handed internal thread, and the left-handed internal thread and the right-handed internal thread are bounded by the center of the connecting sleeve 2. There are two fusion parts 1, one end of one fusion part 1 has an external thread that matches the left-handed internal thread, and one end of the other fusion part 1 has an external thread that cooperates with the right-handed internal thread, and the fusion part 1 includes an axially connected fusion The external thread is arranged on the connecting part, the axial dimension of the fusion part is 2 mm, the outer end surface of the fusion part is a m...

Embodiment 2

[0039] Such as Figure 4 , 5 As shown, the difference between this embodiment and Embodiment 1 is that there is a radially extending fixing portion 8 on the outer end surface of the fusion component 1, and the fixing portion 8 has a threaded hole 11 that cooperates with the fastening screw 10, and the fixing portion 8 has a Two parallel threaded holes B11. The threaded hole B11 is inclined towards the direction of the vertebral body. The nut of the fastening screw 10 is also threaded, and is provided with a shrapnel to prevent the screw from being withdrawn. The thread on the upper body is also fastened with the thread of the threaded hole B11, so that the entire fusion device can be more firmly connected to the vertebral body, effectively preventing displacement.

[0040] Traditional titanium cages cannot be adjusted and cannot be stretched, requiring additional instrumentation (such as plate fixation), and the bilateral bone must grow up to 6 cm before it can heal; and the...

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PUM

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Abstract

The invention relates to an adjustable interface type supporting and fixing fusion device achieving zero incisure of the anterior thoracolumbar spine. The device comprises a connecting sleeve and two fusion components. A left-hand internal thread is arranged at one end of the connecting sleeve, a right-hand internal thread is arranged at the other end of the connecting sleeve, an external thread matched with the left-hand internal thread is arranged at one end of one fusion component, and an external thread matched with the right-hand internal thread is arranged at one end of the other fusion component. Each fusion component comprises a fusion portion and a connecting portion axially connected with the fusion portion. The external threads are arranged on the connecting portions, and the outer end faces of the fusion portions are of a net porous structure. The fusion components at the two ends are drawn close to the middle or opened towards two sides by rotating the connecting sleeve, and therefore the length of the fusion device is adjusted, placing in and taking out are facilitated, and high applicability is achieved. According to the fusion device, adjustment, opening supporting, fusion and zero-incisure fixing are integrated into one system, operation is easy, and use is convenient.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to an adjustable thoracolumbar anterior approach zero-tangential interface support fixation fusion device. Background technique [0002] The previous titanium cage and artificial vertebral body did not have the concept of interfacial fusion, nor did they have the function of fixation. Other anterior thoracolumbar fixation devices in the past only had the function of fixation. They should be used in combination with titanium cages and artificial vertebral bodies, and there is no One is zero notch, and needs to expose the vertebral body in the adjacent stage, damage the periosteum (the periosteum is the tissue that nourishes the bone), ligate the blood vessels, affect the blood supply of the bone, eventually affect the growth and healing of the bone, and also affect the blood supply of the spinal cord. Increased risk of neurological impairment and paralysis in patients. [00...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/44
Inventor 马立泰杨毅刘浩洪瑛
Owner WEST CHINA HOSPITAL SICHUAN UNIV
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