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Personalized cervical vertebrae pedicle screw step-by-step navigation template device and making method thereof

A technology of pedicle screw and navigation template, which is applied in the field of medical devices to achieve the effect of improving the accuracy of screw placement, low cost and low cost

Pending Publication Date: 2019-04-05
ZIGONG NO 4 PEOPLES HOSPITAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is difficult for a single guide plate to meet the requirements of determining the nail entry point, guiding the nail entry direction, and assisting tapping at the same time. The “level-by-level navigation template system” of multiple guide plates may further improve the accuracy

Method used

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  • Personalized cervical vertebrae pedicle screw step-by-step navigation template device and making method thereof
  • Personalized cervical vertebrae pedicle screw step-by-step navigation template device and making method thereof
  • Personalized cervical vertebrae pedicle screw step-by-step navigation template device and making method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] A personalized pedicle screw step-by-step navigation template device, equipped with screw positioning guides, drilling guides and tapping guides, the size of the guide hole / tube is gradually expanded, and the screws are inserted into the vertebral body one by one according to the order of screw placement , Finish setting nails. The inner diameter of the guide hole of the positioning guide <Drilling guide plate guide pipe inner diameter <Tapping guide guide plate guide tube inner diameter.

[0041] The screw positioning guide plate is provided with a positioning mechanism, a positioning hole for the nail insertion point and a horizontal connection structure. The positioning hole is provided on the positioning mechanism. The positioning mechanism is applied to the back of the cervical spine, and its shape is completely attached to the articular process and the back of the lamina to be fixed. Close; The two ends of the horizontal connecting mechanism are respectively connecte...

Embodiment 2

[0050] A personalized pedicle screw step-by-step navigation template device, equipped with screw positioning guides, drilling guides and tapping guides, the size of the guide hole / tube is gradually expanded, and the screws are inserted into the vertebral body one by one according to the order of screw placement , Finish setting nails. The inner diameter of the guide hole of the positioning guide <Drilling guide plate guide pipe inner diameter <Tapping guide guide plate guide tube inner diameter.

[0051] The screw positioning guide plate is provided with a positioning mechanism, a positioning hole for the nail insertion point and a horizontal connection structure. The positioning hole is provided on the positioning mechanism. The positioning mechanism is applied to the back of the cervical spine, and its shape is completely attached to the articular process and the back of the lamina to be fixed. Close; The two ends of the horizontal connecting mechanism are respectively connecte...

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Abstract

The invention belongs to the technical field of medical equipment, in particular to a personalized cervical vertebrae (C3-C7) pedicle screw step-by-step navigation template device and a making methodthereof. The device is characterized by comprising a screw positioning guide plate, a drilling guide plate and a tapping guide plate; and the sizes of guide holes / tubes enlarge step by step, and screws are assisted to be placed into a vertebra body one by one according to a screw setting sequence, so that screw setting is completed. According to the invention, a step-by-step enlarged 3D printing navigation template system assists the internal fixation of the cervical vertebrae (C3-C7) pedicle screw for treating pedicle fracture dislocation, and can reduce operation time and intraoperative bleeding compared with an initial single navigation template, thus improving screw setting safety, more accurately matching a preoperative design, and having a clinical promotion value. Meanwhile, the operations of determining a screw entry point, introducing a screw entry direction, assisting tapping and the like are realized, so that the accuracy is further improved.

Description

Technical field [0001] The invention belongs to the technical field of medical devices, and in particular relates to a step-by-step navigation template device for a personalized cervical pedicle screw and a manufacturing method thereof. Background technique [0002] The lower cervical spine usually refers to the C3-7 vertebra, which is located at the junction of the cervical and thoracic segments. It has greater mobility and concentrated stress distribution. Acute trauma is prone to fracture and dislocation, accounting for more than 50% of all cervical spine injuries. Correction and recovery of dislocations The stability of the lower cervical spine is a problem faced by spine surgeons. In 1994, Abumi et al. first proposed the lower cervical pedicle screw fixation technology. Because the pedicle screw passes through the anterior, middle and posterior three columns of the cervical spine, it can provide a firm posterior fixation, which is a feasible and effective treatment for vario...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/90
CPCA61B17/88A61B17/90
Inventor 吴超
Owner ZIGONG NO 4 PEOPLES HOSPITAL
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