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

A pedicle and navigation template technology, applied in the field of medical devices, can solve problems such as screw placement errors, deformation, and difficulty in changing the screw path, and achieve the effects of convenient operation, improved accuracy, and convenient fixation

Pending Publication Date: 2019-02-15
ZIGONG NO 4 PEOPLES HOSPITAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the steps of pedicle screw placement include determining the screw entry point, judging the direction of screw entry, and expanding the screw path, the initial single navigation template (hereinafter referred to as the initial guide plate) cannot guide the implementation of each step of screw placement. During the operation, it is easy to cause the guide plate guide tube to be too long, difficult to place, deformed, difficult to change the screw path during the operation, etc., resulting in screw placement errors

Method used

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

Examples

Experimental program
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Effect test

Embodiment 1

[0043] A personalized atlantoaxial pedicle screw step-by-step navigation template device, equipped with a screw positioning guide plate, a drilling guide plate and a tapping guide plate, the size of the guide hole (tube) is gradually enlarged, and the screw insertion is assisted one by one according to the order of screw placement Vertebral body, complete the screw placement. That is, the inner diameter of the guide hole of the positioning guide < the inner diameter of the guide tube of the drilling guide < the inner diameter of the guide tube of the tapping guide guide.

[0044] The screw positioning guide plate is equipped with a positioning mechanism, a positioning hole for the screw entry point, and a horizontal connection structure. The positioning hole is set on the positioning mechanism, and the positioning mechanism is applied on the back of the atlantoaxial vertebrae. It fits completely with the articular process; the two ends of the horizontal connection mechanism ar...

Embodiment 2

[0061] Other content is as in embodiment 1, wherein

[0062] The angle between the transverse junction and the top seat is >90°C, and the height of the transverse junction is greater than the height of the spinous process of the patient. There is an identification block on the top base for easy identification.

[0063] The inner diameter of the positioning hole is 2.2 or 2.7mm, the inner diameter of the drilling guide tube is 3.2 or 3.8mm, and the inner diameter of the tapping hole guide tube is 3.8 or 4.2mm. The drill guide tube has an outer diameter of 10 or 14mm and a length of 8 or 12mm.

[0064] The tapping guide tube has an outer diameter of 11 or 13mm and a length of 14 or 16mm. Base thickness is 2.8 or 3.2mm.

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Abstract

The invention belongs to the technical field of medical apparatus and instruments, and particularly relates to a personalized atlantoaxial pedicle screw step-by-step navigation template device. The device is characterized in that the system comprises a positioning guide plate, a drilling guide plate and a tapping guide plate, the template assists each operation of screw placement according to thenail arrangement sequence one by one, expanding is conducted step by step, and the accuracy is improved. Accordingly, the guide plates are independently attached to the bone, the phenomenon that closeattachment cannot be achieved along with the change of the position in an operation cannot occur, the screw placement accuracy rate achieves 100%, and the very good accuracy is achieved.

Description

technical field [0001] The invention belongs to the technical field of medical devices, and in particular relates to a personalized atlantoaxial pedicle screw step-by-step navigation template device and a manufacturing method thereof. Background technique [0002] The upper cervical spine includes the atlas and the axis, which are important structures to maintain the head and body. Severe trauma and other factors can cause atlantoaxial fractures and dislocations, which eventually lead to paralysis and life-threatening injuries. Therefore, timely diagnosis, treatment, and restore its structural stability. At present, the internal fixation of the posterior transpedicular screw-rod system is a conventional surgical method for the treatment of atlantoaxial fractures and dislocations. However, due to the complex anatomical structure of the atlantoaxial vertebrae and its close proximity to important structures such as the spinal cord and vertebral arteries, once the screws are pla...

Claims

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Application Information

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IPC IPC(8): A61B17/90
CPCA61B17/88A61B17/90
Inventor 吴超
Owner ZIGONG NO 4 PEOPLES HOSPITAL
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