Making method of L5-S1 anterior cervical fusion model

A technology of anterior fusion and fabrication method, which is applied in the field of fabrication of anterior lumbar-5-sacral-1 fusion models, which can solve the problems of unsatisfactory recovery, lack of objectivity, and prolonged operation time.

Inactive Publication Date: 2019-05-31
TONGJI UNIV
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Problems solved by technology

However, in the actual clinical operation, the trajectory of the internal fixation screw is mostly selected by the experience of the surgeon, which lacks objectivity. This will inevitably lead to intraoperative refusion or supplementary fixation, prolonging the operation time and unsatisfactory postoperative recovery.
[0004] Due to vascular anatomy, Stand Alone ALIF is only suitable for L4L5 and L5S1 segments, but the blood vessels in front of the lumbar spine vary greatly, and the height of each patient's vertebral body is also different. How to avoid vascular injury and individualized recovery during surgery The height of the vertebral body is a clinically difficult problem

Method used

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  • Making method of L5-S1 anterior cervical fusion model
  • Making method of L5-S1 anterior cervical fusion model

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Embodiment 1

[0036] Experimental time and subjects: From March 2017 to June 2017, 25 patients in the ALIF surgery group were preoperatively planned using the 3D printed lumbar 5 sacral 1 anterior fusion model.

[0037] The operation time and intraoperative blood loss of the patients were recorded. One year of follow-up was conducted, and the fusion rate and intervertebral space height after the StandAlone fusion cage was implanted were observed through postoperative imaging data.

[0038] The operation time and blood loss of 25 patients were counted, which were (148±25)min and (563±34)ml respectively. There was no ureter and great vessel injury during operation, no sympathetic nerve damage, lumbar instability and other complications after operation. disease. The results of follow-up showed that the intervertebral fusion rate of 25 patients was 100% (25 / 25) one year after operation, and the height of the evaluated intervertebral space was (15.5±0.34) mm, which indicated that the clinical e...

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Abstract

The invention relates to a making method of an L5-S1 anterior cervical fusion model. The making method includes the following steps that 1, CT is adopted for scanning the imitated L5S1 segment of thelumbar vertebrae of a patient, so that DICOM format data is obtained; 2, the data is imported into image division software 3D Slicer, and an L5S1 three-dimensional model is reconstructed; 3, with theend plate and the sacral bone on the L5 segment of the lumbar vertebrae being a boundary, dividing modeling is conducted; 4, an operation is simulated to extirpate the intervertebral disc, and it is simulated that a Stand Alone fuser is implanted; 5, a 3D printer is adopted for real object printing, so that the L5-S1 anterior cervical fusion model is finally generated. Compared with the prior art,the making has the advantages of providing convenience for pre-operation observation, and realizing real simulation and personalized customization.

Description

technical field [0001] The invention relates to the field of computer-aided technology and medical equipment, in particular to a method for making a lumbar-5-sacral-1 anterior fusion model. Background technique [0002] Since the report, Anterior lumbar interbody fusion (ALIF) has become a standard technique of interbody fusion and is widely used in the vertebral body. Treatment of spondylolisthesis, discogenic low back pain, and spinal instability. ALIF has many advantages that other lumbar fusions do not have. It can preserve the structural integrity of the posterior lumbar spine, shorten the operation time, reduce blood loss, and avoid scar formation in the spinal canal. At the same time, the intervertebral disc tissue is completely removed, and the intervertebral fusion area is large, improving It can improve the fusion rate and help to restore the intervertebral height and the physiological curvature of the lumbar spine. [0003] At present, the Stand Alone fusion cag...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09B23/28
Inventor 尹帮德冯超博范国鑫贺石生
Owner TONGJI UNIV
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