Fusion cage with adjustable post-grafted bone height

A fusion device and height technology, applied in the direction of spinal implants, etc., can solve the problem of insufficient bone grafting of height-adjustable fusion devices, and achieve the effect of facilitating bone fusion, increasing the amount of bone grafting, and convenient and simple operation

Active Publication Date: 2022-01-25
SHANGHAI REACH MEDICAL INSTR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The present invention fundamentally solves the deficiency that the existing height-adjustable fusion device cannot fully graft bone

Method used

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  • Fusion cage with adjustable post-grafted bone height
  • Fusion cage with adjustable post-grafted bone height
  • Fusion cage with adjustable post-grafted bone height

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Embodiment Construction

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0031] refer to Figure 1-5 , a height-adjustable fusion device, comprising: a main body 1, a blade assembly 2 fitted with the main body 1, and a push assembly 3 fitted with the blade assembly 2, one end surface of the main body 1 The interference fit has an end cap 4, and when the blade assembly 2 is in a closed state, the cage is put into the space of the vertebral body through the cage holder; the main body 1 includes a screw segment 11, and The side secti...

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Abstract

The invention discloses a fusion cage with adjustable post-grafted bone height. The fusion cage comprises a main body, a blade assembly embedded with the main body and a pushing assembly embedded with the blade assembly, wherein an end cover is in interference fit with one end face of the main body; the main body comprises a screw rod section, side surface sections and an opening section, the side surface sections are integrally connected with the two ends of the screw rod section separately, the opening section is integrally connected with the side surface sections, a threaded through hole is formed in the screw rod section, and an opening through hole is formed in the opening section; and the pushing assembly comprises a first U-shaped base and a threaded rod fixedly connected to the first U-shaped base, the threaded rod penetrates through the first U-shaped base, and a pin is fixedly connected to the end, close to the threaded rod, of the first U-shaped base. According to the fusion cage, the structural design is convenient to operate, harm to a human body is reduced to the maximum extent, the fusion cage is expanded to reach an intervertebral height required by a patient, the space of a bone grafting bin of the expanded fusion cage is increased, and the requirement on bone grafting continuing can be met.

Description

technical field [0001] The invention relates to the technical field of fusion devices, in particular to a height-adjustable posterior bone graft fusion device. Background technique [0002] Spinal degenerative disease is a common disease, among which the treatment of lumbar degenerative spondylolisthesis, segmental instability, intervertebral discogenic disease, traumatic spondylolisthesis, etc. generally requires lumbar fixation and fusion. The application of the intervertebral fusion device can maintain the height of the intervertebral space, restore the support of the anterior and middle columns, increase the capacity of the intervertebral foramen, relieve the compression of the nerve roots, and prevent the collapse of the intervertebral space and the formation of pseudarthrosis. With the development of minimally invasive surgery, higher requirements are placed on the design of intervertebral fusion devices. On the other hand, with the application of endoscopic technolog...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/44
CPCA61F2/447A61F2/4455A61F2002/30383A61F2002/30398A61F2002/30405A61F2002/30433A61F2002/30476A61F2002/30507A61F2002/30515A61F2002/30537A61F2002/30556A61F2002/30904
Inventor 赵红卫韩璐璐黄孝敏
Owner SHANGHAI REACH MEDICAL INSTR
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