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Surgical implants comprising graded porous structures

A technology of surgical implants and porous structures, applied in the field of surgical implants, can solve problems such as poor bone ingrowth characteristics and poor mechanical strength

Active Publication Date: 2019-11-22
FLEMISH TECH INST LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Dense scaffold structure with good mechanical properties but poor bone ingrowth properties
Conversely, more porous structures offer good biological properties but poor mechanical strength

Method used

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  • Surgical implants comprising graded porous structures
  • Surgical implants comprising graded porous structures
  • Surgical implants comprising graded porous structures

Examples

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Embodiment Construction

[0020] For purposes of illustration, aspects of the invention are described with respect to a specific example of an acetabular component of a hip implant. However, it is readily noted that the indicated aspects are readily applicable to other kinds of implants, such as spinal implants, cranial implants, maxillofacial implants and dental implants.

[0021] figure 1 An implant 10 according to aspects of the invention is schematically depicted. Implant 10 is shown as an acetabular component of a hip prosthesis and includes a frame portion 11 . In this specific example, the bracket portion 11 is attached to the dense portion 12 . The dense part 12 forms a hemispherical shell which can be provided with a lining forming the receiving part of the ball joint. The femoral component (not shown) of the hip prosthesis typically includes a ball received in a liner. It is easy to notice that in other types of implants the dense part can be omitted.

[0022] The scaffold portion 11 is ...

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Abstract

A surgical implant (10), comprising a porous structure (11) with interconnected pores (20) for ingrowth of bone into the porous structure. The porous structure comprises an arrangement of fibres (13,14) which are attached to one another, the fibres being arranged in layers (151, 152, 153), the layers being stacked. The porous structure comprises a surface (111), wherein the surface comprises different regions (112, 113) having different porosities. A method of making the above surgical implant is described.

Description

technical field [0001] The present invention relates to surgical implants comprising scaffold structures for bone ingrowth. In particular, the present invention relates to surgical implants of the above-mentioned type in which the scaffold structure comprises a graded porosity. Background technique [0002] The use of graded porous implants for prosthetic Composite tissue of bone and cartilage. The portion with the larger pore size is implanted into the bone for bony ingrowth, while the portion with the smaller pore size allows for cartilage ingrowth. In other words, hierarchically porous implants can be used to select or facilitate the attachment of specific cell types on and in the implant before and / or after implantation. The part for bony ingrowth and the part for cartilage ingrowth can be made of different materials. The gradient of material properties may range from material properties suitable for load bearing to those suitable for soft tissue regeneration. [00...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/30A61F2/34
CPCA61F2/30907A61F2/34A61F2002/30011A61F2002/30909A61F2002/30914A61F2002/30915A61F2002/30971A61F2002/30985A61F2002/30006A61F2002/30028A61F2002/30769A61F2002/348
Inventor S·马伦斯L·普罗塔索娃S·达纳奇D·范格纽登
Owner FLEMISH TECH INST LTD
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