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Trace slide type unstressed shielding steel plate

A sliding, stress-free technology, applied in the field of medical devices, can solve problems such as easy secondary fractures, uneven force on screws, and inability to slide, so as to promote fracture healing, reduce secondary fractures, and protect blood supply.

Inactive Publication Date: 2011-03-09
明彩
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Plate fixation is a common method for the treatment of leg fractures of the lower extremities, but the common fixation plates commonly used have the following disadvantages: ① there is stress shielding, bone absorption, and secondary fractures; ② cannot slide, and the fracture end cannot slide after absorption in the later stage Pressurized, it is easy to form a gap, it is difficult to heal and the fixation fails; ③The fretting stimulation and application conduction of the fracture end is poor; it is not conducive to fracture healing; ④The force direction of the screw on the bone tissue is inconsistent (there is separation and extrusion of the bone tissue); ⑤The screw is damaged Uneven force, prone to fatigue and fracture; ⑥Fixation failure or non-union requires secondary surgical fixation

Method used

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  • Trace slide type unstressed shielding steel plate
  • Trace slide type unstressed shielding steel plate
  • Trace slide type unstressed shielding steel plate

Examples

Experimental program
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Effect test

Embodiment

[0033] Example: such as figure 1 -6, for the convenience of description, we will unify figure 1 The left end is called the proximal end, and the right end is called the distal end. The steel plate plate body 4 is a rectangular long groove steel plate, and the section is an arc surface (see figure 2 ), with arc-shaped ends (see image 3 ), the inner side of the plate body 4 ( figure 1 The lower surface) forms undulating ripples, that is, the contact with the bone is point-contact; the plate body 4 is provided with a proximal nail hole 1, several middle nail holes 2, and a distal nail hole 3 in sequence. Each nail hole is longitudinally longer along the plate body 4 .

[0034] The structure of the middle nail hole 2 is: the table top 21 is concave relative to the board body 4, the table top 21 is an arc surface (cooperating with the nail cap), the through hole 22 is oblong, that is, both ends are semicircular, and the middle is rectangular. The plate body 4, the table top ...

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Abstract

The invention relates to a trace slide type unstressed shielding steel plate, in particular to a fixing steel plate for fracture treatment, which is characterized in that a plate body is orderly provided with a near end tack hole, a plurality of intermediate tack holes and a far end tack hole, wherein the through holes of the intermediate tack hole and the far end tack hole are used for placing bolts; a removable slide lock is arranged in the near end tack hole; and the through holes on the slide lock are used for placing the bolts. In the invention, the bolts of the intermediate tack hole are arranged in a removable mode; the near end tack hole is provided with a slide block; the far end tack hole is provided with an inclined slop; and the slide block and the inclined slop can pressurize the fracture end. The trace slide type unstressed shielding steel plate has the following beneficial effects: (1) having no stress shielding problem, healing under stress, and reducing secondary fracture after being taken; (2) eliminating residual gap of the fracture end after absorbing; (3) ensuring that the fracture end is only pressurized without separation; (4) enabling the fracture end to fret so as to prompt the fracture to heal; (5) ensuring the axial stress stimulation on the fracture end so as to promote fracture healing; and (6) adopting inner surface point type contact which is beneficial to blood supply protection so as to promote the fracture healing.

Description

technical field [0001] The invention relates to the technical field of medical devices, and further relates to a fixed steel plate for bone injury treatment, in particular to a micro-sliding stress-free shielding steel plate. Background technique [0002] Plate fixation is a common method for the treatment of leg fractures of the lower extremities, but the common fixation plates commonly used have the following disadvantages: ① there is stress shielding, bone absorption, and secondary fractures; ② cannot slide, and the fracture end cannot slide after absorption in the later stage Pressurized, it is easy to form a gap, it is difficult to heal and the fixation fails; ③The fretting stimulation and application conduction of the fracture end is poor; it is not conducive to fracture healing; ④The force direction of the screw on the bone tissue is inconsistent (there is separation and extrusion of the bone tissue); ⑤The screw is damaged Uneven force, easy to fatigue and fracture; ⑥...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/80
Inventor 明彩张全金明立德明新杰
Owner 明彩
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