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3D-printed cervical vertebra pedicle screw guide and implantation plate and preparation method thereof

A pedicle screw, 3D printing technology, applied in medical science, internal bone synthesis, internal fixator, etc., can solve the problems of not being able to guide multiple cervical vertebral bodies, and not being able to guide the cervical pedicle screws into screws, etc. The effect of reducing the difficulty of fitting, stable use of the device and ensuring accuracy

Active Publication Date: 2015-07-01
BEIJING FRIENDSHIP HOSPITAL CAPITAL MEDICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the problem that the existing technology cannot guide the cervical pedicle screws well and guide multiple cervical vertebral bodies, the purpose of the present invention is to provide a 3D printed cervical spine that can solve the above problems. (Cervical 2-Cervical 7) Cervical Pedicle Screw Guided Implantation Plate

Method used

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  • 3D-printed cervical vertebra pedicle screw guide and implantation plate and preparation method thereof
  • 3D-printed cervical vertebra pedicle screw guide and implantation plate and preparation method thereof
  • 3D-printed cervical vertebra pedicle screw guide and implantation plate and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Example 1 3D printed cervical pedicle screw-guided implant plate structure

[0044]A 3D-printed cervical pedicle screw-guided implantation plate, comprising a solid guide plate 1, the size of which can cover one cervical lamina; 1 is also provided with a spinous process hole 3; the spinous process hole 3 is located on one side of the guide plate 1, and the guide screw track 2 is set on the other side of the guide plate 1, and the direction of the guide screw track 2 is consistent with the direction of the pedicle screw screw entry track , through the guide screw channel 2, the screw can accurately enter the pedicle. The upper part of the guide plate 1 is a flat surface 11, and the curved surface 12 at the bottom of the guide plate 1 is in the same direction as the operation vertebral plate. One side of the upper plane 11 of the guide plate 1 extends to the exit of the guide nail channel 2, and then extends outward for 5 mm. From one side to the other side of the spino...

Embodiment 2

[0046] Example 2 3D printed structure of cervical pedicle screw-guided implant plate

[0047] A 3D-printed cervical pedicle screw-guided implant plate, including a solid guide plate 1, the size of which can cover one cervical lamina; two pedicle screw guide channels 2 arranged on the guide plate 1, and the guide plate 1 is also provided with a spinous process hole 3; the spinous process hole 3 is located in the center of the guide plate 1, and two guide screw tracks 2 are arranged on both sides of the guide plate 1. The direction of the guide screw track 2 is consistent with the direction of the pedicle screw screw entry track. Through the guide screw channel 2, the screw can accurately enter the pedicle. The upper part of the guide plate 1 is a plane 11, and the curved surface 12 at the bottom of the guide plate 1 can be in the same direction as the surgical lamina; After the exit, extend 4mm outward. The shape of the spinous process hole 3 is consistent with that of the sp...

Embodiment 3

[0049] Example 3 3D printed structure of cervical pedicle screw-guided implant plate

[0050] A 3D-printed cervical pedicle screw-guiding implant plate, including a solid guide plate 1, the size of which can cover three cervical vertebral plates; three pedicle screw guide channels 2 arranged on the guide plate 1, and the guide plate 1 is also provided with three spinous process holes 3; the spinous process holes 3 are located on one side of the guide plate 1, and the guide screw track 2 is set on the other side of the guide plate 1, and the direction of the guide screw track 2 is consistent with the direction of the pedicle screw screw entry track , through the guide screw channel 2, the screw can accurately enter the pedicle. The upper part of the guide plate 1 is a plane 11, and the bottom curved surface 12 of the guide plate 1 is in the same direction as the surgical lamina; one side of the bottom curved surface 12 of the guide plate 1 reaches the outside of the lateral mas...

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Abstract

The invention relates to a 3D-printed cervical vertebra pedicle screw (cervical spine 2-7) guide and implantation plate and a preparation method thereof. The implantation plate is printed through the 3D printing technology and comprises one or more guide plates, one or more cervical vertebra pedicle screw guide screw ways and one or more spinous process holes where spinous processes are inserted, wherein the cervical vertebra pedicle screw guide screw ways and the spinous process holes are formed in the guide plates, a plane is arranged on the upper portion of each guide plate, a curve surface is arranged on the bottom of each guide plate and consistent with the vertebral plate reversely, and the plane on the upper portion of each guide plate extends to a screw inlet way and extends for 2-5 mm on the outlet of the plane on the upper portion. When many guide plates are provided, connectors are arranged between the guide plates. Several fixing pins are arranged on the guide plates in order to guarantee stability of the guide and implantation plate, and fixing clamps are arranged near the spinous process holes. The 3D-printed cervical vertebra pedicle screw guide and implantation plate is simple and reasonable in structure, convenient to use and capable of effectively providing individual screw inlet guide hole ways for cervical vertebra pedicle screws, guaranteeing screw inlet accuracy, reducing operation difficulty and operation risks.

Description

technical field [0001] The invention belongs to a guiding medical device for cervical posterior surgery, in particular to a 3D-printed cervical pedicle screw guiding implant plate. Background technique [0002] The biomechanical stability of cervical pedicle screw fixation is better than that of other cervical fixation techniques, and even exceeds the stability of anterior titanium plate + posterior lateral mass fixation, which is to correct cervical kyphosis and perform cervical fixation and fusion It is also an ideal fixation method for treating cervical spine diseases such as cervical spine fracture and dislocation. However, the cervical pedicle is not only small but also located in the narrow space formed by the vertebral artery, spinal cord and upper and lower nerve roots, which increases the difficulty and risk of pedicle screw placement. The currently commonly used free-hand nail placement method is based on anatomical landmarks. The key to accurately inserting cerv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/90B33Y10/00B33Y80/00
CPCA61B17/72A61B17/90
Inventor 杨雍费琦王炳强李东李锦军孟海林吉生苏楠王奇赵凡
Owner BEIJING FRIENDSHIP HOSPITAL CAPITAL MEDICAL UNIV
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