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Preparation method of composite microporous multi-structure bionic artificial bone, and gradient mold

A multi-structure, artificial bone technology, applied in molds, home appliances, tissue regeneration, etc., to achieve controllable porosity, controllable channel distribution, and wide application range

Pending Publication Date: 2021-12-31
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide a preparation method and a gradient mold for a composite microporous multi-structure bionic artificial bone, and the composite material is designed to be a multi-structure composite material similar to the actual bone structure of the human body, which solves the problem of single Porous porous composite materials have excellent mechanical and biological properties for implantation in the human body; according to the mechanical and biological performance requirements of the use site, design the load-bearing part with excellent external mechanical properties and the internal one with excellent biological properties. porous part

Method used

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  • Preparation method of composite microporous multi-structure bionic artificial bone, and gradient mold
  • Preparation method of composite microporous multi-structure bionic artificial bone, and gradient mold
  • Preparation method of composite microporous multi-structure bionic artificial bone, and gradient mold

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Embodiment 1

[0044] The preparation method of the composite microporous multi-structure bionic artificial bone comprises the following steps:

[0045] Step 1, the preparation of the mixed powder in the inner layer, uniformly mix the pore forming agent with a content of 30wt% (porosity 30wt%) and the ceramic powder with a content of 70wt%;

[0046] Step 2, preparation of the complex: fix the sleeve and the inner layer indenter in the two-layer gradient structure mold to the chassis, and the annular space reserved between the sleeve and the inner layer indenter is a two-layer gradient structure The size of the outer layer; fill the annular space with the powder material required for the design, and lightly press it with the outer layer pressure head; then pull out the inner layer pressure head gently, and the inner layer pressure head is pulled out. The space vacated (after the inner layer pressing head is taken out, the original position of the inner layer pressing head will be free to add ...

Embodiment 2

[0054] The preparation method of the composite microporous multi-structure bionic artificial bone comprises the following steps:

[0055] Step 1, the preparation of the mixed powder in the inner layer, uniformly mix the pore former (50% porosity) with a content of 50wt% and the ceramic powder with a content of 50wt%;

[0056] Step 2, preparation of the complex: fix the sleeve and the inner layer indenter in the two-layer gradient structure mold to the chassis, and the annular space reserved between the sleeve and the inner layer indenter is a two-layer gradient structure The size of the outer layer; fill the annular space with the powder material required for the design, and lightly press it with the outer layer pressure head; then pull out the inner layer pressure head gently, and the inner layer pressure head is pulled out. The space vacated (after the inner layer pressing head is taken out, the original position of the inner layer pressing head will be free to add powder) i...

Embodiment 3

[0064] The preparation method of the composite microporous multi-structure bionic artificial bone comprises the following steps:

[0065] Step 1, the preparation of the mixed powder in the inner layer, uniformly mix the pore forming agent with a content of 70wt% (porosity of 70%) and the ceramic powder with a content of 30wt%;

[0066] Step 2, preparation of the complex: fix the sleeve and the inner layer indenter in the two-layer gradient structure mold to the chassis, and the annular space reserved between the sleeve and the inner layer indenter is a two-layer gradient structure The size of the outer layer; fill the annular space with the powder material required for the design, and lightly press it with the outer layer pressure head; then pull out the inner layer pressure head gently, and the inner layer pressure head is pulled out. Fill the vacated space with the powder material required for the design, and insert the inner layer pressing head again;

[0067] Step 3, the ...

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Abstract

The invention discloses a preparation method of a composite microporous multi-structure bionic artificial bone, and a gradient mold. The preparation method comprises the following steps: 1) preparing inner-layer mixed powder; 2) preparing a complex; 3) adding powder material for being filled in a sleeve in a layered mode, enabling each layer of sample to be provided with a corresponding pressing head, and pressing each layer of pressing head on the powder material; pressing the mold on a press machine to form a green body; and demolding from the mold to obtain a bionic multi-structure material blank; and 4) sintering the obtained blank in a vacuum furnace to remove the pore forming agent, and performing furnace cooling to obtain the gradient porous ceramic material A base is arranged at one end of the sleeve of the gradient mold, the other end of the sleeve is sleeved with the outer-layer pressing head, and the inner-layer pressing head is sleeved with the inner cavity of the outer-layer pressing head, the structure is simple, operation is convenient and easy, the preparation period is short, and the manufacturing cost is low.

Description

technical field [0001] The invention belongs to the technical field of preparation of bionic multi-structure composite materials, and in particular relates to a preparation method of composite microporous multi-structure bionic artificial bone and a gradient mold. Background technique [0002] Human bone has a typical gradient porous structure, gradually changing from compact bone to loose bone from the outside to the inside. Therefore, the surface of the human bone is hard and strong, while the inside is porous and spongy, which makes the bone flexible. The entire human skeleton can support the human body, enabling it to perform various activities such as standing, sitting, lying, running, and jumping. Therefore, when a single porous ceramic material is implanted, it cannot meet the functional requirements of the diversity of implant materials, which often greatly limits the application of porous ceramics. Therefore, in order to combine the excellent properties of differe...

Claims

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Application Information

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IPC IPC(8): C04B38/02C04B35/80C04B35/447C04B35/48C04B35/622B28B21/82A61L27/56A61L27/50A61L27/12A61L27/10A61L27/08A61L27/02
CPCC04B38/02C04B35/80C04B35/48C04B35/447C04B35/622B28B21/82A61L27/10A61L27/12A61L27/08A61L27/025A61L27/50A61L27/56C04B2235/6562C04B2235/6567C04B2235/775A61L2430/02C04B38/007
Inventor 赵雪妮范强陈雪岩王朋义马林林赵振洋刘傲杨智
Owner SHAANXI UNIV OF SCI & TECH
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