Interbody fusion cage

Abstract

The invention discloses an interbody fusion cage and belongs to the technical field of medical treatment. The interbody fusion cage comprises a main cage body, a horizontal-movement component, a screwand two end plates, the main cage body is provided with a hollow inner cavity and openings of the two side faces, and the horizontal-movement component is located in the inner cavity; the two sides of the horizontal-movement component are provided with protruding supporting parts, the horizontal-movement component is in screw joint with the screw, so that the horizontal-movement component horizontally moves in the inner cavity under adjustment of the screw, a channel is axially formed in the screw, and a circulation hole communicated with the channel is radially formed in the outer surface ofthe screw; the two end plates are located at the openings respectively, and inclined grooves slidingly matched with the supporting parts are formed in the end plates, so that the end plates move in the opposite direction or the direction away from each other when the horizontal-movement component moves. By rotating the screw, the horizontal-movement component moves along the axis of the screw, with assistance of sliding cooperation of the supporting parts and the inclined grooves, the two end plates are close to or away from each other, and the height of the fusion cage can be adjusted according to the demand of a patient.

Description

technical field [0001] The invention relates to the field of medical technology, in particular to an intervertebral fusion device. Background technique [0002] In clinical orthopedics, when the vertebral body is damaged for treatment, a fusion device needs to be implanted between the damaged vertebral bodies, so that the bone tissue can crawl and replace, thereby repairing the damaged vertebral body. However, the height of the traditional intervertebral fusion cage is fixed, and the intervertebral height of the patient will vary from person to person. Therefore, it is necessary to select an appropriate height intervertebral fusion cage according to the actual situation of the patient before the operation, which increases the preoperative preparation time and increases the The number of surgical tools is reduced, and the operation time is prolonged. [0003] General fusion cages that can be adjusted in height adopt a spring structure or a U-shaped groove design. The spring ...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide an intervertebral fusion device to solve the technical problems existing in the prior art that the height of the intervertebral fusion device is inconvenient to adjust and the medical materials are difficult to be transported in place

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