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Degradable bionic double-layer humerus bone fracture plate

A technology for bone plate and humerus, which is applied in the field of bionic double-layer humerus bone plate, can solve the problems of low mechanical strength of polymer materials and cannot use the proximal humerus bone plate alone, etc., and achieves variable stiffness and avoids the effect of secondary surgery.

Active Publication Date: 2022-03-01
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the mechanical strength of polymer materials is far lower than that of metal or alloy bone plates, so they cannot be used alone for proximal humeral bone plates, and can be combined with other high-strength materials

Method used

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  • Degradable bionic double-layer humerus bone fracture plate
  • Degradable bionic double-layer humerus bone fracture plate
  • Degradable bionic double-layer humerus bone fracture plate

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Embodiment Construction

[0035] Describe the present invention below in conjunction with accompanying drawing.

[0036] Such as Figure 1 to Figure 3 As shown, the present invention is composed of an upper plate A, a lower plate B and a screw group C. The outer edge of the bone plate is smooth, and the inner surface is a bionic curved surface, which fits well with the injured humerus; the upper plate A The material is biodegradable bioceramics; the material of the lower plate B is polycaprolactone; the material of the screws in the screw group C is racemic polylactic acid; the convex plate 17 of the upper plate A fits with the groove 18 of the lower plate B, and bonded with degradable magnesium phosphate bone cement; the width b1 of the upper back plate 2 and the lower back plate 16 is both: 13-15mm; the width b2 of the upper front plate 7 and the lower front plate 9 is both: 22-24mm .

[0037] Such as Figure 4As shown, the angle θ1 between the upper front plate 7 and the upper rear plate 2, the l...

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Abstract

A degradable bionic double-layer humerus bone fracture plate belongs to the technical field of orthopedic implantation medical instruments and is composed of an upper plate, a lower plate and a screw set, a convex plate of the upper plate and a groove of the lower plate are matched and bonded through degradable magnesium phosphate bone cement, and screws of the screw set correspond to screw holes formed in the upper plate and the lower plate. The inner surface of the lower plate is designed to be a bionic humerus curved surface, and the fitness is good. The bone fracture plate is made of bioabsorbable materials, the strength of the bone fracture plate can meet the biomechanical internal fixation requirement, the degradation rate of the upper plate is higher than that of the lower plate, and the bone fracture plate formed by combining the two materials can achieve the variable rigidity design. By means of the degradable double-layer humerus bone fracture plate and the degradable hollow screws, a secondary operation can be avoided, meanwhile, the elasticity modulus of the bone fracture plate can be effectively reduced, stress shielding to injured bones is reduced, reconstruction of bone trabecula and cortical bones is promoted, and healing of a fracture area is accelerated.

Description

technical field [0001] The invention belongs to the technical field of orthopedic implant medical devices, in particular to a degradable bionic double-layer humerus bone plate. Background technique [0002] Fracture is a common form of injury in orthopedic clinic. Among them, humerus fracture ranks third among many common fractures. Among patients over 65 years old, proximal humeral fractures account for 10% of the total fractures. Proximal humeral fractures seriously affect the quality of life of the elderly. According to the fracture site and degree of fracture, the existing treatment methods for proximal humeral fractures mainly include external fixation, Kirschner wire internal fixation, suture fixation, locking plate system internal fixation, intramedullary nail internal fixation, and shoulder joint replacement. , bone grafting or bone cement application, etc. In these clinical treatment methods, metal or alloy locking plates are widely used. [0003] First, the meta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/80A61B17/86
CPCA61B17/8061A61B17/86A61B2017/00004
Inventor 钱志辉刁友浩任雷王坤阳梁威陈魏庄智强曹宇任露泉
Owner JILIN UNIV