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Bionic three-dimensional bone trabecula structure porous tantalum and preparation method thereof

A trabecular structure and bone trabecular technology, applied in the field of medical orthopedic bionic materials, can solve the problems of low porosity, high elastic modulus, poor strength, etc., to achieve the goal of promoting bone ingrowth and bone regeneration, and reducing stress shielding effect Effect

Active Publication Date: 2019-11-29
深圳大洲医学科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Orthopedic implant materials have experienced the development process from stainless steel, cobalt-chromium alloy to titanium alloy, and have achieved good clinical results, but they all have certain defects such as low porosity, poor strength, and high elastic modulus.

Method used

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  • Bionic three-dimensional bone trabecula structure porous tantalum and preparation method thereof
  • Bionic three-dimensional bone trabecula structure porous tantalum and preparation method thereof
  • Bionic three-dimensional bone trabecula structure porous tantalum and preparation method thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0035] The present invention also provides a preparation method of the biomimetic three-dimensional trabecular bone structure porous tantalum according to the above technical scheme, which includes the following steps:

[0036] Use 3D printing to print the required three-dimensional trabecular bone structure;

[0037] Annealing the three-dimensional trabecular bone structure to obtain a bionic three-dimensional trabecular bone structure porous tantalum;

[0038] The annealing temperature is 900~1100℃, and the vacuum degree is less than 5×10 -3 Pa, time is 2~3h.

[0039] The present invention uses 3D printing to print the required three-dimensional trabecular bone structure.

[0040] In the present invention, the specific steps of using 3D printing to print the required three-dimensional trabecular bone structure preferably include:

[0041] A three-dimensional trabecular bone structure model is established through modeling software according to actual needs, and the three-dimensional tra...

Embodiment 1

[0060] Example 1: Support rod-shaped bionic three-dimensional trabecular bone structure porous tantalum for treatment of femoral head necrosis

[0061] Determine the porous tantalum model of supporting rod-shaped bionic three-dimensional trabecular bone structure according to the actual situation of the patient. The specific structure is as follows figure 2 , image 3 with Figure 4 As shown; the supporting rod-shaped three-dimensional trabecular bone structure model is imported into the selected laser melting equipment, using a spherical tantalum powder with a diameter of 15-45 μm, under the conditions of a laser power of 250W, a scanning speed of 150mm / s, and a scanning distance of 0.07mm Print down to obtain a supporting rod-shaped three-dimensional trabecular bone structure;

[0062] After printing, take the printed product (substrate and supporting rod-shaped three-dimensional trabecular bone structure) out of the device, use a wet explosion-proof vacuum cleaner to suck up the...

Embodiment 2

[0068] Example 2: Reinforced block bionic three-dimensional trabecular bone structure porous tantalum for joint replacement revision

[0069] Determine the porous tantalum model of the reinforced block bionic three-dimensional trabecular bone structure according to the actual situation of the patient. The specific structure is as follows Figure 5 As shown; the reinforced block three-dimensional trabecular bone structure model is imported into the selected laser melting equipment, using a spherical tantalum powder with a diameter of 15 to 45 μm, at a laser power of 250W, a scanning speed of 150mm / s, and a scanning distance of 0.07mm Print under conditions to obtain a reinforced block 3D trabecular bone structure;

[0070] After printing, take the printed product (substrate and reinforced block three-dimensional trabecular bone structure) out of the equipment, use a wet explosion-proof vacuum cleaner to suck up the surface and internal residual powder of the printed product; use dry ...

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Abstract

The invention provides bionic three-dimensional bone trabecula structure porous tantalum and a preparation method thereof, which belong to the technical field of medical orthopedic bionic materials. The bionic three-dimensional bone trabecula structure porous tantalum provided by the invention has a same microstructure as a human bone, is made of metal tantalum, can be better fused with human bonetissue, and promotes bone ingrowth and bone regeneration; besides, by controlling a rod diameter, a hole diameter and the porosity of the porous tantalum of the bionic three-dimensional bone trabecula structure, the compressive strength and the bending strength of the porous tantalum of the bionic three-dimensional bone trabecula structure are higher than those of a normal human bone, the elasticmodulus is between a cancellous bone and a cortical bone, and the stress shielding effect can be effectively reduced. Meanwhile, the preparation method is simple, internal stress remaining in the bionic three-dimensional bone trabecula structure porous tantalum in the printing process is eliminated through annealing, the situation that the structure and mechanical stability of the bionic three-dimensional bone trabecula structure porous tantalum are affected due to subsequent possible stress deformation is prevented, and the final bionic three-dimensional bone trabecula structure porous tantalum has excellent mechanical properties.

Description

Technical field [0001] The invention belongs to the technical field of medical orthopedic bionic materials, and in particular relates to a bionic three-dimensional trabecular bone structure porous tantalum and a preparation method thereof. Background technique [0002] Although disorders of the musculoskeletal system generally do not directly lead to death, they are one of the most common reasons for seeking medical attention, and are the most common causes of disability, loss of work ability and reduced quality of life. In recent years, the increasing aging of the population has caused the incidence of musculoskeletal diseases to increase year by year globally. Common diseases of the musculoskeletal system include bone and joint degeneration, spinal trauma and degeneration, limb trauma, bone defects, osteoporosis, and bone tumors. From the perspective of pathogenesis, most diseases of the musculoskeletal system are closely related to the local anatomy and biomechanical state, w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61L27/04A61L27/50A61L27/56B22F3/105B22F5/00B33Y10/00B33Y80/00
CPCA61L27/56A61L27/047A61L27/50B22F5/00B33Y10/00B33Y80/00A61L2430/02B22F10/00B22F10/38B22F10/68B22F10/36B22F10/28B22F10/64B22F10/366Y02P10/25
Inventor 杨景周张大琛雷鹏飞胡懿郃张树培陈海深
Owner 深圳大洲医学科技有限公司
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