Composite unit for bone implant, porous scaffold and preparation method

A technology of bone implants and porous scaffolds, applied in bone implants, medical science, tissue regeneration, etc., can solve the problems of fewer implant designs and only consider uniaxial loads, etc., to shorten the time-consuming design, The structure is simple and the effect of improving the ability to resist bending deformation

Active Publication Date: 2019-07-05
SOUTH CHINA INST OF COLLABORATIVE INNOVATION
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be seen from the published literature that most of the structural designs of existing implants only consider uniaxial loads, and there are few implants that need to bear bending loads

Method used

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  • Composite unit for bone implant, porous scaffold and preparation method
  • Composite unit for bone implant, porous scaffold and preparation method
  • Composite unit for bone implant, porous scaffold and preparation method

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Experimental program
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Embodiment

[0033] Such as figure 1 -As shown in 4, a composite unit for bone implants includes several structural units 1. The structural units 1 include a first receiving surface, a second receiving surface and a connecting rod 2 in the shape of a truncated cone. One end of the connecting rod 2 is respectively connected with the first receiving surface, the other ends of the plurality of connecting rods 2 are respectively connected with the second receiving surface, and the radius of one end surface of the connecting rod 2 is smaller than the radius of the other end surface, The structural units 1 merge in sequence to form the porous structure 3, that is, the second receiving surface and the first receiving surface of the adjacent structural unit 1 merge in sequence to form the porous structure 3. The radius of the two ends of the connecting rod 2 Ascending from the head end to the tail end of the porous structure 3, the second bearing surfaces of the tail ends of the two porous structure...

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Abstract

The invention relates to the technical field of medical implant materials and discloses a composite unit for a bone implant. The composite unit comprises a plurality of structural units; each structural unit comprises a first bearing surface, a second bearing surface and cone frustum shaped connecting rods, wherein one end of each connecting rod is connected with the first bearing surface while the other end of each connecting rod is connected with the second bearing surface, and the radius of one end face of each connecting rod is smaller than that of the other end face. The second bearing surfaces are combined with the first bearing surfaces of the adjacent structural units sequentially to form porous structures, radiuses of two end faces of the connecting rods are gradually increased from head ends to tail ends of the porous structures, and the second bearing surfaces at tail ends of the two porous structures are combined to form the composite unit. The invention further discloses aporous scaffold for the bone implant and a preparation method of the porous scaffold for the bone implant. The composite unit and the porous scaffold have advantages of low elasticity modulus and applicability to bearing of bending loads.

Description

Technical field [0001] The invention relates to the technical field of medical implant materials, in particular to a composite unit for bone implants, a porous support and a preparation method. Background technique [0002] In the field of bone tissue engineering, porous metal implants are the focus of research. By designing the pore structure, the mechanical and biological properties of the metal material are matched with the natural bone tissue of the human body. Although the research in this direction has been carried out for many years, the practical application of bone tissue engineering is still subject to multiple limitations. Among them, individual differences in the service environment of implants lead to difficulties in standardization, which is an important constraint. Existing studies mostly simplify actual applications and use more intuitive standards for evaluation. From the perspective of mechanical compatibility, porous implants need to have an elastic modulus ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/28A61L27/04A61L27/06A61L27/50A61L27/56
CPCA61F2/2846A61F2002/2835A61F2002/30968A61F2002/3097A61L27/047A61L27/06A61L27/50A61L27/56A61L2430/02
Inventor 郑华德刘丽丽张明
Owner SOUTH CHINA INST OF COLLABORATIVE INNOVATION
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