Vertebral fusion cage

Abstract

The invention relates to a vertebral fusion cage.The vertebral fusion cage comprises a screw rod, an upper plate and a lower plate.The upper end face of the lower plate is provided with a first slope, the lower end face of the upper plate is provided with a second slope matched with the first slope, and the first slope and the second slope are provided with first anti-slip teeth which can be meshed mutually.A nut connected with the lower plate is arranged in the lower plate and in threaded connection with the screw rod and sleeves the screw rod, and one end, close to the second slope, of the screw rod is limited in the lower plate and rotatably connected with the lower plate.When the screw rod is rotated, the nut in threaded fit with the screw rod is driven to move towards the first slope to drive the upper plate to move upwards along the first slope; when the screw rod is rotated reversely, the nut is driven to move in a direction away from the first slope to drive the upper plate to move downwards along the first slope, so that height adjustment is realized to adapt to different vertebral heights of different patients.By meshing of the first anti-slip teeth for increasing friction, slipping is prevented, and stability is improved.

Description

technical field [0001] The invention relates to the field of medical instruments, in particular to a vertebral body fusion device. Background technique [0002] In daily life, cases of vertebral body damage due to tumors, fractures, infections, etc. occur from time to time. When treating these patients, the current method used is to implant a fusion device between the damaged vertebral bodies to make the bone tissue produce Crawling substitutes to repair the damaged vertebral body. However, the height of the traditional vertebral body fusion cage is fixed, and the height of the intervertebral body of the human body varies from person to person. It is impossible to adjust the height of the vertebral body fusion cage to suit the different needs of different patients. Intervertebral height, so that the intervertebral height of the human body cannot be fully applied to the vertebral fusion device, which affects the therapeutic effect. Contents of the invention [0003] Based ...

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Problems solved by technology

[0002] In daily life, cases of vertebral body damage due to tumors, fractures, infections, etc. occur from time to time. When treating these patients, the current method used is to implant a fusion device between the damaged vertebral bodies to make the bone tissue produce Crawling substitutes to repair the damaged vertebral body. However, the height of the traditional vertebral body fusion cage is fixed, and the height of the intervertebral body of the human body varies from person to person. It is impossible to adjust the height of the vertebral body fusion cage to suit the different needs of different patients. Intervertebral height, so that the vertebral body fusion device cannot be fully adapted to the intervertebral height of the human body, which affects the treatment effect

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