Axis odontoid screw sighting device

A technology of odontoid process and aimer, which is applied in the field of medical devices, can solve the problems of screw breakage, large operation randomness, injury to the spinal cord, etc., and achieve the effects of easy control of direction, reduction of repeated needle insertion, and improvement of accuracy

Inactive Publication Date: 2012-10-31
周健
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

Although the curative effect of anterior screw internal fixation in the treatment of odontoid process fractures has been clinically affirmed, in the past, because the operation was mainly based on experience, the guiding Kirschner wire needed to be adjusted repeatedly, the operation was random, and serious complications may even occur. Including screw breakage, fracture displacement, fracture nonunion, or screw tapping out of the odontoid process and injury to the spinal cord, etc.

Method used

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  • Axis odontoid screw sighting device
  • Axis odontoid screw sighting device
  • Axis odontoid screw sighting device

Examples

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Embodiment Construction

[0016] Such as figure 1 As shown, the pivot bevel dentate screw collimator of the present invention includes a hollow guide tube 1, and the hollow guide tube 1 is equipped with at least two telescopic connecting rods 2, and one end of the telescopic connecting rod 2 has a tube The hollow guide tube 1 is inserted into the tube sleeve, and the other end of the telescopic link 2 is connected to the fine-tuning control board 3. The fine-tuning control board 3 is connected to the support rod 4 through a ball joint, and the ball joint can adopt an interference fit. Install, utilize frictional force to fix the position of fine-tuning control board 3 and support bar 4, also can be as figure 2 As shown, a fastening screw 9 is installed on the ball joint, the angle of the ball joint can be freely adjusted by loosening the fastening screw 9, and the ball joint can be fixed by tightening the fastening screw 9. Support bar 4 is connected on the support, and described support can be fixed...

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Abstract

The invention relates to a medical instrument, in particular to an axis odontoid screw sighting device for guiding positioning of hollow screws during axis odontoid fracture treatment. The axis odontoid screw sighting device comprises a hollow guide tube and is characterized in that at least two telescopic connection rods are installed on the hollow guide tube, one ends of the telescopic connection rods are provided with sleeves, the hollow tube is inserted in the sleeves, and the other ends of the telescopic connection rods are connected onto a fine control panel which is connected with a supporting rod through a spherical joint. The axis odontoid screw sighting device is simple in structure and convenient to use, and can be used for guiding accurate positioning of kirschner wires during the axis odontoid fracture treatment. Therefore, operation quality is improved, operation errors are reduced, and pain of patients is alleviated.

Description

technical field [0001] The invention relates to a medical instrument, in particular to a pivot bevel odontoid screw aimer for guiding hollow screw positioning in the treatment of pivotal odontoid process fractures. Background technique [0002] Axial odontoid process fractures are common fractures of the cervical spine, accounting for 10% to 14% of cervical fractures. The nonunion rate of untreated or improperly treated odontoid fractures is 42-72%, and there is potential atlantoaxial instability at the same time, which may lead to acute or chronic damage to the brainstem, spinal cord or nerve roots, causing severe Quadriplegia, respiratory dysfunction, and even death. Therefore, patients with axial odontoid process fractures should be actively treated. Since the first report in 1981 that the use of screws for direct internal fixation of odontoid process fractures has been reported in clinical practice, compared with traditional treatment methods, this technique can not on...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/90
Inventor 周健厉锋
Owner 周健
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