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3D positioner for thoracolumbar vertebra arch pedicle

A pedicle and three-dimensional positioning technology, which is applied in medical science, computer-aided planning/modeling, surgical navigation system, etc., can solve problems such as not being popularized, high risk of screw placement, manual control errors, etc., to achieve convenient The effect of popularizing and promoting, ensuring the quality of implantation, and improving safety

Inactive Publication Date: 2005-03-23
NANJING GENERAL HOSPITAL NANJING MILLITARY COMMAND P L A
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

At present, the use of pedicle screws is mainly carried out in the lumbar spine and thoracolumbar region. The pedicles above thorax 10 are not widely used due to their small diameter and high risk of screw placement. The existing pedicle screws rely entirely on anatomical landmarks. Estimating distance and angle, which is difficult to control due to individual variation and manual error
The only instrument that can be used for pedicle positioning is the "computer three-dimensional navigation system", which is very expensive and difficult to popularize clinically.

Method used

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  • 3D positioner for thoracolumbar vertebra arch pedicle
  • 3D positioner for thoracolumbar vertebra arch pedicle
  • 3D positioner for thoracolumbar vertebra arch pedicle

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Embodiment Construction

[0026] Such as figure 1 -8. The thoracolumbar pedicle three-dimensional positioning device of the present invention is composed of a positioner 1, a positioning frame 2 and a positioning screw 3. The front column of the positioning screw 3 is provided with an external thread 4, and the screw head at the rear end is square. The rear end face of the square head is provided with an internally threaded hole 5; the positioning frame 2 is a frame body, and the middle part of the front end face of the bottom edge is connected forward as a whole with a connecting rod 6, and the front end of the connecting rod 6 is provided with the rear end of the positioning screw 3. The positioning square groove 7 matched with the screw square head is provided with a through hole in the middle part of the bottom edge of the positioning frame 2 and its connecting rod 6, and the long screw rod 8 matched with it passes through the through hole, and the long screw rod 8 front end outside The threaded he...

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Abstract

The 3D positioner for thoracolumbar vertebra arch pedicle used for bone surgery consists of positioner, positioning frame and positioning screw. The positioning screw has front pan head with outer thread, back square head with inner thread hole; the positioning frame has connecting rod, square positioning slot in the front end of the connecting rod, and through hole for holding the long scew; and the positioner consists of fixed frame with connecting rod and adjustable positioning bridge comprising bridge frame and two aiming and positioning mechanisms.

Description

technical field [0001] The invention relates to a thoracolumbar vertebral pedicle positioning device for hospital orthopedic surgery. Background technique [0002] Pedicle screws play an important role in the treatment of spinal trauma reduction, deformity correction, and instability reconstruction. At present, the use of pedicle screws is mainly carried out in the lumbar spine and thoracolumbar region. The pedicles above thorax 10 are not widely used due to their small diameter and high risk of screw placement. The existing pedicle screws rely entirely on anatomical landmarks. Estimating distance and angle is difficult to control due to individual variation and manual error. And the instrument that can be used for carrying out pedicle location has only " computer three-dimensional navigation system ", and its price is very expensive, is difficult to popularize clinically. At present, the commonly used positioning methods at home and abroad are: [0003] Roy-Camille metho...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B17/56A61B34/10A61B34/20
Inventor 毛广平赵建宁王与荣陈跃先黎介寿
Owner NANJING GENERAL HOSPITAL NANJING MILLITARY COMMAND P L A
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