A New Multifunctional Bone Plate and Its Application

A kind of bone plate, multi-functional technology, applied in the direction of outer plate, internal bone synthesis, medical science, etc., can solve the problems of tissue mechanical properties mismatch, strength reduction and healing delay, stress shielding effect, etc., to reduce stress shielding effect, reduce mold The effect of avoiding stress shielding

Active Publication Date: 2015-09-30
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, various orthopedic fixation devices widely used in clinical practice are mainly made of inert metal materials such as stainless steel, cobalt-based alloys and titanium alloys. The main problems in clinical practice include mismatching of mechanical properties between materials and human tissues, non-degradability, etc.
The elastic modulus of normal human bone tissue is about 20GPa, while the elastic modulus of traditional metal bone fixation is higher than 100GPa, the resulting obvious difference in elastic modulus and strength will produce stress shielding effect, affect bone healing, and even re-injury
[0003] At present, the biggest disadvantage of 316L stainless steel bone plate compared with titanium alloy bone plate is that its higher elastic modulus brings obvious stress shielding effect, that is, the strength reduction and healing delay caused by the mechanical shunt of the fixing material to the bone other biological effects

Method used

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  • A New Multifunctional Bone Plate and Its Application
  • A New Multifunctional Bone Plate and Its Application
  • A New Multifunctional Bone Plate and Its Application

Examples

Experimental program
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Effect test

Embodiment 1

[0030] Such as figure 1 As shown, the multifunctional bone plate of the present invention is a miniature bone plate with a thickness of 1 mm, a width of 5 mm, and a length of 25 mm. There are 4 nail holes 1 on the plate surface, and 3 through holes 2 penetrating the inside of the bone plate. The diameter of the through holes is 0.5mm, and the distance between the hole walls is about 0.5mm. The existence of the through hole inside the bone plate reduces the cross-sectional area of ​​the bone plate by 15.7%, which can effectively reduce the stress shielding effect. At the same time, the through hole is filled with filler 3, which is Qing A mixture of damycin and starch that imparts antibacterial and anti-inflammatory properties to the bone plate.

Embodiment 2

[0032] Such as figure 2 As shown, the multifunctional bone plate of the present invention is a small bone plate with a thickness of 2 mm, a width of 6 mm, and a length of 30 mm. There are four nail holes 1 on the plate surface, and two through holes 2 penetrate through the bone plate inside. The diameter of the through holes is 1mm, and the distance between the hole walls is about 1.5mm. The existence of through holes inside the bone plate reduces the cross-sectional area of ​​the bone plate by 12.1%, which can effectively reduce the stress shielding effect. At the same time, the through holes are filled with fillers 3, which are collagen and A mixture of hydroxyapatite powders that provide nutrients for fracture repair through the slow degradation of collagen and hydroxyapatite, giving bone plates multifunctional properties.

Embodiment 3

[0034] Such as image 3As shown, the multifunctional bone plate of the present invention is a T-shaped bone plate with a thickness of 5 mm, a width of 16 mm, and a length of 200 mm. There are at least 10 nail holes 1 on the plate surface, and 10 through holes 2 penetrating through the bone plate are arranged in the form of 2 rows, the diameter of the through hole is 1mm, the distance between the inner hole walls of each row is about 1mm, the hole wall distance between the two rows of through holes is 0.5mm, there are 2 through holes running through the top of the bone plate, the diameter of the through hole is 3mm, The spacing is 2mm. The existence of through holes inside the bone plate reduces the cross-sectional area of ​​the bone plate by 9.8%-17.6%, which can effectively reduce the stress shielding effect. The slow degradation of the alloy wire provides magnesium ions and calcium ions for fracture repair, promotes fracture healing, and endows the bone plate with multifunc...

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Abstract

The invention aims to provide a novel multifunctional bone plate which is a strip-shaped thin plate and has a plate face with at least two nail holes for fixing of the bone plate. The novel multifunctional bone plate is characterized in that a throughout through hole is formed in the bone plate and is filled with all medicines and / or similar fillers capable of promoting skeleton healing or repair, so that the bone plate provides multiple functions. The bone plate is mainly used for in vivo fixing or shaping and repair in case of human / animal fracture. Compared with the clinical bone plate, the bone plate provided by the invention has the benefits that with the throughout through hole therein, the area of cross section of the bone plate is reduced, so as to reduce the modulus of the bone plate and further to effectively reduce stress shielding effect and promote fracture healing. Meanwhile, with the multifunctional materials in the through hole, the bone plate is multifunctional.

Description

technical field [0001] The invention belongs to the field of orthopedic fixation devices among medical devices, and in particular relates to a novel multifunctional bone plate and its application range. Background technique [0002] At present, various orthopedic fixation devices widely used in clinical practice are mainly made of inert metal materials such as stainless steel, cobalt-based alloys, and titanium alloys. The main problems in clinical practice include the mismatch between the mechanical properties of materials and human tissues, and non-degradability. The elastic modulus of normal human bone tissue is about 20GPa, while the elastic modulus of traditional metal bone fixation is higher than 100GPa, the resulting obvious difference in elastic modulus and strength will produce stress shielding effect, affect bone healing, and even Injury again. [0003] At present, the biggest disadvantage of the 316L stainless steel bone plate compared with the titanium alloy bone...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B17/80A61L31/16A61L31/06A61L31/04A61L31/02
Inventor 任伊宾邵传伟肖克沈杨柯
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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