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Metal and ceramic composite joint prosthesis and manufacturing method thereof

A joint prosthesis and ceramic composite technology, applied in the fields of prosthesis, medical science, tissue regeneration, etc., can solve the problems of inability to achieve superior wear resistance of ceramic materials, inability to achieve bone cell ingrowth, etc., to achieve tight and stable connection, The effect of preventing chipping

Active Publication Date: 2020-02-07
吉瑞骨科有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Because ceramic materials are difficult to make into a porous structure and cannot achieve bone cell ingrowth, and joint friction surfaces made of metal materials cannot achieve the superior wear resistance of ceramic materials
However, the current products are all made of a single material. Therefore, there is an urgent need for a product that integrates the joint friction surface of ceramics and the osseointegration interface of porous metal on the same implant.

Method used

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  • Metal and ceramic composite joint prosthesis and manufacturing method thereof
  • Metal and ceramic composite joint prosthesis and manufacturing method thereof
  • Metal and ceramic composite joint prosthesis and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] like Figure 1-7 The illustrated embodiment provides a metal and ceramic composite prosthesis of the present invention comprising a metal body and a ceramic body 4, and the metal body is integrally formed, including a porous structure layer 3, a boundary layer 2 and a root layer 1, and the boundary layer The layer 2 is between the porous structure layer 3 and the root layer 1. The root layer 1 includes several root-like filament clusters connected to the boundary layer without contacting each other. The root-like filament clusters include main roots 1- 1 and several fibrous roots 1-2 connected to the side of the main root, the fibrous roots 1-2 extend obliquely away from the boundary layer, and the ceramic body 4 covers root-like filament clusters and is formed on the boundary layer 2.

[0044] The metal and ceramic composite joint prosthesis of this embodiment realizes the composite of metal and ceramic in one joint prosthesis product, which not only meets the wear-res...

Embodiment 2

[0057] The present invention also provides a method for manufacturing the metal and ceramic composite joint prosthesis in Example 1, the method comprising:

[0058] Design a 3D model of a metal body;

[0059] Input the three-dimensional model file into the 3D printing device for 3D printing, and obtain the root layer 1, boundary layer 2 and porous structure layer 3 in Example 1, wherein the 3D printing device is a metal 3D printing device;

[0060] Implant the printed metal body into the molding mold of the ceramic body, fill the root layer side with ceramic blank powder and a firing-assisting adhesive, close the molding mold, and place the ceramic blank powder The body and the sintering-assisting adhesive are pressurized to form a blank before sintering; the existence of the boundary layer 2 prevents the diffusion of the ceramic blank powder to the porous structure layer, and at the same time provides a molding surface for the blank before sintering.

[0061] Put the pre-sin...

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Abstract

The invention discloses a metal and ceramic composite joint prosthesis and a manufacturing method thereof. The joint prosthesis comprises a metal body and a ceramic body, the metal body is integrallyformed, and comprises a porous structure layer, a boundary layer and a root-shaped layer, the boundary layer is positioned between the porous structure layer and the root-shaped layer, the root-shapedlayer comprises a plurality of root-shaped wire clusters which are connected to the boundary layer and do not make contact with one another, each root-shaped wire cluster comprises a main root perpendicularly connected with the boundary layer and a plurality of fibrous roots connected to the side face of the main root, the fibrous roots obliquely extend towards the side away from the boundary layer, and the ceramic body covers the root-shaped wire clusters and is formed on the boundary layer. According to the joint prosthesis, compounding of metal and ceramic is achieved, a wear-resistant ceramic body needed by a joint friction surface is met, and a porous metal structure which is needed by an osseointegration surface and has a good bone ingrowth effect is also met. The root-shaped wire clusters of the root-shaped layer are planted in the ceramic body, so that tight and stable connection is generated between the ceramic body and the metal body, the root-shaped wire clusters are not incontact with each other, and the ceramic body is prevented from being locally broken or generating cracks.

Description

technical field [0001] The invention relates to the field of orthopedic implants, in particular to a metal-ceramic composite joint prosthesis and a manufacturing method thereof. Background technique [0002] At present, implant products for artificial joint replacement surgery usually have two very important surfaces, that is, the joint friction surface and the osseointegration interface. It has good friction performance, including sufficient hardness and toughness, low wear rate, good lubricating performance, anti-deformation strength, etc., to meet the functional requirements. Today, the industry generally recognizes the ceramic interface as a friction pair for unilateral or even bilateral joint friction. The surface of the porous metal can effectively reduce the wear of the articular surface; the osseointegration interface is the interface between the implant and the human bone. Recent studies have shown that the porous metal surface has a good bone ingrowth effect, makin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61L27/10A61L27/04A61L27/50A61L27/56
CPCA61L27/105A61L27/10A61L27/047A61L27/50A61L27/56A61L2430/24Y02P10/25
Inventor 张卫平
Owner 吉瑞骨科有限公司