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Rotating bone nail for orthopaedics

A bone nail and orthopedic technology, applied in the field of orthopedic rotary bone nails, can solve problems such as poor stability of multi-axis bone nails

Inactive Publication Date: 2013-05-08
林士斌 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the polyaxial bone screw can easily solve the problem that the vertebral joints are usually not parallel, the stability between the U-shaped seat part of the polyaxial bone screw and the polyaxial screw is not very good. Therefore, how to It can easily solve the problem that the vertebral joints are usually not parallel, and can make the combination between the screw of the bone nail and the U-shaped seat of the bone nail more stable, which is really a big test

Method used

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  • Rotating bone nail for orthopaedics
  • Rotating bone nail for orthopaedics
  • Rotating bone nail for orthopaedics

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0046] figure 1 It is a three-dimensional exploded view of a preferred specific example of the orthopedic rotary bone screw of the present invention, wherein the reference numeral 100 is a seat part, 110 is a fixed end, 120 is a connecting end, 121 is a connecting groove, 200 is a screw, and 210 is a connecting part, 220 is the nail stem and 211 is the crack. The connecting part 210 of the screw 200 passes through the connecting end 120 of the seat part 100 and is combined with the connecting groove 121, wherein the screw 200 is made of an arc-shaped connecting part 210 so that it can be positioned in the arc-shaped connecting groove 121 relative to the seat. The part 100 rotates on a single axis, and the connecting part is further provided with a slit 211, so that the connecting part 210 has compression / recovery elasticity. Reverse movement can utilize the compression / recovery elasticity of the slit 211 of the connecting member 210 to engage and fix the connecting member 21...

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Abstract

The invention relates to a rotating bone nail for orthopaedics, in particular to a rotating bone nail capable of being rotated around a single axle and fixed for orthopaedics. The rotating bone nail for orthopaedics comprises a bearing part and a screw, wherein one end of the bearing part is a fixed end, and the other end of the bearing part is a connecting end provided with a connecting groove; one end of the screw is a nail, the other end of the screw is a connecting part combined with the connecting groove of the bearing part; the rotating bone nail is characterized in that the connecting part and the connecting groove are actually combined in a single axle rotation mechanism before an operation, so that the bearing part actually is capable of rotating only around the axle of the nail before the operation.

Description

technical field [0001] The invention relates to a rotary bone nail for orthopedics, in particular to a rotary bone nail for orthopedics that can be uniaxially rotated and fixed. Background technique [0002] Generally speaking, the spine is not in a straight line, but the fixation rods in the spinal fixation device are in a straight line. The current solutions are nothing more than the following structures: [0003] 1. Use angled bone nails to offset the angle between the joints to be fixed, for example see TW-183341, TW-168911, etc. However, the structure must be accurately evaluated before operation, and any deviation during the operation must not be tolerated, so as not to completely or excessively offset the angle between the joints to be fixed. [0004] 2. Use an additional fixed joint block to offset the angle between the joints to be fixed, for example, see TW-250680, TW-292540, etc. However, elements / components such as fixed joint blocks and additional joint nuts m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B17/70A61B17/86
Inventor 林士斌卢士钧林士闳
Owner 林士斌