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Spinous internal-fixation device

A fixation device and spinous process technology, applied in the field of internal fixation devices, can solve the problems of easy damage to blood vessels and nerves, inability to expand and compress, aggravated spinal cord injury, etc., and achieve the effect of shortening operation time, shallow installation position and simple structure

Active Publication Date: 2009-12-16
KANGHUI MEDICAL INNOVATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some have a large number of distracted vertebral bodies, which are easy to stray into the spinal cord to aggravate the injury, easy to unhook, and complicated to operate; others have a deep fixed position, easily stray into the front chest or abdominal cavity, and easily damage large blood vessels and nerves.
Others can only fix the spinous process, cannot stretch and compress, and have poor torsion resistance

Method used

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  • Spinous internal-fixation device
  • Spinous internal-fixation device

Examples

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Embodiment Construction

[0012] Refer to attached Figure 1~2 , The spinous process internal fixation device includes a fixation plate 1 , connecting screws 4 and nuts 6 . Fixed plate 1 is provided with 2 pieces, and fixed plate 1 side is provided with some tooth-shaped projections 5, and chute 2 is arranged on fixed plate 1, and chute 2 is the through groove of long waist shape. The tooth-shaped protrusions 5 of the two fixing plates 1 are assembled oppositely, and the connecting screws 4 pass through the chute 2 of the two fixing plates 1 to connect them together. The chute 2 is provided with 1 to 6 pieces. The connecting screws 4 are provided with 1 to 6 pieces. The connecting screw 4 adopts a bone screw, and the screw head 3 is an outer hexagon. Nut 6 adopts expansion hexagonal nut or hexagonal nut.

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PUM

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Abstract

The invention relates to an internal-fixation device of a narrow vertebral plate for lumbar vertebra, thoracic vertebra, cervical vertebra, traumatic and pathological fracture. The internal-fixation device comprises two fixing plates, a connecting screw and a nut; one side of the fixing plate is provided with a plurality of toothed bulges, a sliding groove is arranged on the fixing plate, and the sides of toothed bulges of the two fixing plates are assembled in an opposite way, the connecting screw penetrates through the sliding grooves of the two fixing plates for carrying out connection, and the locking of the fixing plates is carried out by the nut. The sliding groove is a long-waist shaped through groove, and one to six sliding grooves 2 and one to six connecting screws are arranged. The connecting screw adopts a bone screw, and the head of the screw is outer-hexagonal, and the nut adopts an expanding hexagon nut or a hexagon nut.

Description

technical field [0001] The spinous process internal fixation device of the present invention relates to an internal fixation device for lumbar vertebrae, thoracic vertebrae, cervical vertebrae, traumatic and pathological fractures, and stenosis of lamina. Background technique [0002] At present, with the continuous development of spinal surgery methods, a variety of spinal internal fixation devices have also appeared. For example: spinous process plate, Harper's rod and vertebral body fixation plate. Some have a large number of distracted vertebral bodies, which are easy to stray into the spinal cord to aggravate the injury, easy to unhook, and complicated to operate; other fixed positions are deep, easy to stray into the front chest cavity or abdominal cavity, and easily damage large blood vessels and nerves. Others can only fix the spinous process, cannot stretch and compress, and have poor torsion resistance. Contents of the invention [0003] The purpose of the pres...

Claims

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Application Information

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IPC IPC(8): A61B17/70A61B17/80
CPCA61B17/7068
Inventor 杨利波山卫东王志敏王彤余强蒋庆幸丁伟王爱平蒋凯崔建培彭豪
Owner KANGHUI MEDICAL INNOVATION
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