Interbody fusion cage capable of realizing pressurizing bone grafting and matching with height of intervertebral space

An intervertebral cage and intervertebral space technology, applied in the field of intervertebral cages, can solve the problems of nerve root injury, prolonged operation time, limited range of distraction height, etc., to promote early fusion, expand the scope of application, safe and minimally invasive Fusion effect
CN112137774AActive Publication Date: 2020-12-29ZHUHAI WEIERKANG BIOTECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ZHUHAI WEIERKANG BIOTECH
Publication Date
2020-12-29

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Abstract

The invention discloses an interbody fusion cage capable of realizing pressurizing bone grafting and matching with the height of an intervertebral space. The interbody fusion cage comprises a frame, wherein the frame is in a vertically-through rectangular shape, a power sliding block is connected into the frame in an embedded mode, supporting plates are arranged at the upper end and the lower endof the power sliding block respectively, ribs are arranged on the supporting plates, a groove is formed in the power sliding block; and the supporting plates and the power sliding block are embedded and connected through the ribs and the groove; a rear through hole is formed in the rear end of the frame, the rear end of the power sliding block is connected with a screw through a thread, and the screw penetrates through the rear through hole to be arranged on the frame in a sleeving manner; a groove is also formed in the circumferential direction of the screw, and the groove and a fixed shaft pin cooperate to realize the purpose that the screw cannot move in the axial direction; and a front through hole is formed in the front end of the frame, the front end of the power sliding block is connected with a guide pin pipe in a sliding assembly mode, and the guide pin pipe is connected to the front end of the frame in a threaded mode;. The structural design that the height of the interbody fusion cage is adjustable is adopted, through linked control of the guide pin pipe, the screw and the power sliding block, perfect matching of the height of the interbody fusion cage and the height ofa physiological intervertebral space is realized, and the purpose of parallel lifting height of the intervertebral space after implantation is achieved.
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Description

technical field

[0001] The invention relates to the technical field of fusion devices, in particular to an intervertebral fusion device capable of pressurizing bone grafts and matching the height of the intervertebral space. Background technique

[0002] Traditional intervertebral fusion cages do not have the function of height adjustment. Intervertebral fusion cages of different specifications need to be used in different intervertebral space heights. The types are complex, which increases the difficulty of surgery, requires a long operation time, and the operation process is complicated;

[0003] The existing intervertebral fusion surgery is suitable for open surgery due to the excessive volume of the intervertebral fusion device. The large volume fusion device damages the original stable structures such as the articular process and the fibrous ring of the intervertebral disc too much, resulting in spinal instability. Finally, a nail rod must be added for fixation, which n...

Claims

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