Linkage type interbody fusion cage

Abstract

The invention provides a linkage type interbody fusion cage. The linkage type interbody fusion cage comprises at least two fusion cage units and implanting devices connected to the rear ends of the fusion cage units. One side of each fusion cage unit is provided with a dovetail groove, and the other side of the fusion cage unit is provided with a dovetail boss matched with the dovetail groove. The fusion cage units are sequentially connected through the dovetail grooves and the dovetail bosses. The lateral sides of each implanting device are respectively provided with a dovetail slide groove and a dovetail slide rail, the dovetail slide groove is identical with the dovetail groove in the corresponding fusion cage unit, and the dovetail slide rail is identical with the dovetail boss of the corresponding fusion cage unit. Each fusion cage unit can slide onto the dovetail boss of the adjacent fusion cage unit along the adjacent implanting device or slide into the dovetail groove of the adjacent fusion cage unit along the adjacent implanting device. The linkage type interbody fusion cage has the advantages that the fusion cage units are implanted into a surgical wound, the size of the surgical wound is reduced by several times, and the linkage type interbody fusion cage is small in wound, low in pain and fast in recovery; the fusion cage units are sequentially connected, so that the stability and connecting strength of the interbody fusion cage are increased; the implanting devices are used to guide the fusion cage units, the slide rails matched with the dovetail grooves are used to achieve stable transition, and implanting speed is increased.

Description

technical field [0001] The invention relates to the technical field of medical instruments, in particular to a linked intervertebral fusion device. Background technique [0002] Lumbar disc herniation, lumbar instability, thoracolumbar degenerative disease, and spondylolisthesis are common lumbar diseases. Generally, intervertebral fusion is used for treatment. Intervertebral cages are inserted into the intervertebral disc to fuse the upper and lower lumbar spine. The intervertebral fusion device commonly used now is a single fusion device or several independent fusion devices without connection. The single intervertebral fusion device is a whole, so when a single fusion device is filled between the intervertebral discs, the The wound is relatively large, the patient's recovery is slow, and the pain is relatively severe; when the independent fusion device is implanted, the size of the wound is often limited and cannot be implanted multiple times, and the wound area is still ...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is: in order to overcome the shortcomings of large trauma, severe pain, and slow recovery after the implantation of a single fusion device in the prior art, or insufficient stability when a single or multiple independent fusion devices are implanted, the present invention provides A linked intervertebral fusion device, which uses multiple interconnected fusion devices and implanters matching the fusion devices to achieve continuous implantation of the intervertebral fusion device, which has the characteristics of less trauma, less pain, and faster recovery

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