sliding steel plate

A steel plate and strip-shaped technology, applied in the field of internal fixation devices, can solve the problems of not being able to prevent rotation and separation well, and being unable to fully avoid stress shielding effects, so as to avoid stress shielding effects, promote callus growth, and achieve strong fixation. Effect

Inactive Publication Date: 2015-11-11
方玉树
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the stress shielding effect cannot be fully avoided in the middle and late stages of fracture
The intramedullary nail (after delocking nail) is dynamically fixed, but it cannot prevent rotation and separation well

Method used

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  • sliding steel plate
  • sliding steel plate
  • sliding steel plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Embodiment one: if figure 1 , 2 As shown, the present invention comprises a strip-shaped steel plate 2 and a screw 3 with two grooves 1, the groove 1 is a strip-shaped groove, and the strip-shaped steel plate 2 on both sides of the strip-shaped groove 1 is a strip-shaped depression 4 The screw 3 is composed of a clavicle screw 5 and a positioning screw 6. The clavicle screw 5 includes a threaded screw body 5a, an outwardly convex positioning step 5b that is arranged on the threaded screw body 5a and matches the strip-shaped depression 4, and is arranged on the outwardly convex positioning step 5b. Sliding column 5c, the sliding column end 5c is provided with notch 5d, and the upper end of clavicle screw 5 is provided with internal screw hole 5e, and set screw 6 is made of screw head 6a that matches strip-shaped depression 4, and the internal screw hole 5e of clavicle screw 5. The screw body 6b corresponding to the screw hole 5e is formed. The screw head 6a is a cross-...

Embodiment 2

[0015] Embodiment two: if image 3 As shown, this embodiment is based on the first embodiment, and more than one screw hole 7 is provided on the elongated steel plate 2, and the screw hole 7 is provided with a cross-shaped or a flat or hexagonal locking screw 8.

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PUM

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Abstract

Slide steel plate is characterized by comprising a grooved elongated steel plate and a screw. The groove of the grooved elongated steel plate is an elongated through groove. Elongated recesses are arranged on the elongated steel plate on two sides of the elongated through groove. The screw comprises a locking screw and a positioning screw. The locking screw comprises a threaded screw body, an outward-protruding positioning step and a slide column, wherein a recess is arranged at the end of the slide column. An inner threaded hole is arranged at the upper end of the locking screw. The positioning screw comprises a screw head and a screw body. Compared with the prior art, the firm fixation is provided at early stage, stress shielding is avoided at middle and late state, individual pressurizing is provided, and the slide steel plate is applicable to traumatic fracture and bone ununion.

Description

Technical field: Technical field: [0001] The invention relates to an internal fixation device for long tubular bone fractures and bone nonunion. Background technique: [0002] At present, the internal fixation devices for long tubular bone fractures and bone nonunion mainly include (limited contact) compression plates, reconstruction plates, locking plates, locking intramedullary nails and intramedullary nails. These internal fixation functions are relatively limited. (Limited contact) compression plate, reconstruction plate, and locking plate are absolute static fixation after fracture fixation; interlocking intramedullary nails are also absolute static fixation when the screw is not locked. Therefore, the stress shielding effect cannot be fully avoided in the middle and late stages of fracture. Although the intramedullary nail (after delocking nail) is dynamically fixed, it cannot prevent rotation and separation well. Invention content: [0003] The object of the pre...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B17/68A61B17/80A61B17/86
Inventor 方玉树
Owner 方玉树
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