Press-fit type lumbar interbody fusion cage based on 3D printing

Abstract

The invention discloses a press-fit type lumbar interbody fusion cage based on 3D printing. The structure comprises a base, a press-fit mechanism and a propelling mechanism, a first through hole is formed in the base in the vertical direction; the press-fit mechanism is arranged in the first through hole in a penetrating mode and provided with a second through hole with the same opening direction as the first through hole. The propelling mechanism is arranged in the second through hole; the propelling mechanism is in sliding connection with the base in the vertical direction, and the propelling mechanism is connected with the press-fit mechanism in the horizontal direction. The lumbar interbody fusion cage is manufactured based on the 3D printing technology and can be quickly customized according to the conditions of specific cases, a press-fit type jacking opening structure is adopted, the vertebral body cannot be hurt during implantation and posture adjustment, the structure is simple, and the stability is high after the device is opened in place; the device can be used for implanting a fusion cage in a minimally invasive surgery with a narrow operation space, the operation time is short, and the operation cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of orthopedic medical devices, in particular to a press-fit lumbar intervertebral fusion device based on 3D printing. Background technique [0002] Lumbar interbody fusion is an effective method to restore spinal stability and correct abnormal load-bearing patterns of the lumbar spine. The main advantages include: the most stable internal fixation effect can be obtained during the biomechanical movement phase; the performance of reconstructing the load sharing of the anterior column, the protection of the internal fixation effect of the posterior instrument, so that the correction of the deformity can be maintained during the healing period, and the posterior instrument Fatigue fractures can be minimized. Lumbar interbody fusion surgery mainly includes anterior interbody fusion, posterior interbody fusion, and transforaminal interbody fusion. Clinically, the combination of intervertebral fusion and PLT is ...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problem that the openable lumbar intervertebral fusion device disclosed in the prior art is open at an angle and cannot be applied to cases requiring horizontal support, the purpose of the present invention It is to provide a press-fit lumbar intervertebral fusion device based on 3D printing, which is manufactured based on 3D printing technology and can be quickly customized according to specific cases. The height of the intervertebral fusion cage in the contracted state is smaller than that of the intervertebral space of the lumbar vertebrae, and it can be directly inserted into the intervertebral space in the non-expanded state. It will cause damage to the vertebral body endplate during implantation and posture adjustment. It has a simple structure and strong stability after being stretched in place; it can be used for the implantation of fusion devices in minimally invasive operations with narrow operating space, and the operation time is short and the operation cost is reduced.

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