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Tantalum coating orthopedic implant material, preparation method thereof and orthopedic implant

A technology for orthopedic implants and implant materials, applied in the field of orthopedic implants, can solve the problem of difficult ingrowth of bone tissue, and achieve the effects of accelerating osseointegration, good application prospects and less potential harm

Active Publication Date: 2021-08-24
BEIJING AKEC MEDICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The main purpose of the present invention is to provide a tantalum-coated orthopedic implant material and its preparation method, and an orthopedic implant to solve the problem that bone tissue is difficult to grow into a tantalum-coated orthopedic implant in the prior art

Method used

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  • Tantalum coating orthopedic implant material, preparation method thereof and orthopedic implant
  • Tantalum coating orthopedic implant material, preparation method thereof and orthopedic implant
  • Tantalum coating orthopedic implant material, preparation method thereof and orthopedic implant

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preparation example Construction

[0044] In order to further improve the preparation efficiency of the above-mentioned transition layer, tantalum coating and tantalum surface functional layer, the above-mentioned preparation method preferably includes: step S1, spraying titanium powder or titanium alloy particles on the base layer to form a transition layer; step S2, using laser In the cladding method, tantalum particles are sprayed on the transition layer to form a tantalum coating; in step S3, the tantalum coating is subjected to a hydrothermal reaction with a calcium salt and a strong alkali solution to obtain a tantalum-coated orthopedic implant material.

[0045] In order to improve the efficiency of the hydrothermal reaction of the above-mentioned step S3 of the present application, the process of the above-mentioned hydrothermal reaction preferably includes: immersing the material obtained in step S2 in the sodium hydroxide solution of 0.2mol / L calcium dihydrogen phosphate and 5mol / L In the process, the ...

Embodiment 1

[0054] Tantalum-coated Ti-6Al-4V acetabular cups have an effective spherical outer diameter of 52 mm and acetabular height of 44 mm.

[0055] Surface pretreatment of the outer surface of the acetabular cup: the outer surface of the acetabular cup was polished with 200-grit sandpaper and 800-grit sandpaper for 3 minutes, and then polished with 1200-grit sandpaper for 5 minutes; and ultrasonically cleaned in acetone solution for 6 minutes; Ultrasonic cleaning with water for 5 minutes, and then drying to obtain the polished base layer; use aluminum oxide particles to perform sandblasting on the ground acetabular cup base layer to obtain the sandblasted acetabular cup base layer; the sandblasted acetabular base layer The base layer of the cup is subjected to acid etching treatment, the average particle size of alumina particles is 400 μm, the pressure of sand blasting treatment is 1 MPa, and the time of sand blasting treatment is 60 s; V(H 2 O): The mixed acid of V (sulfuric acid)...

Embodiment 2

[0060] The difference between embodiment 2 and embodiment 1 is that

[0061] The sphericity of the tantalum particles was 0.6, resulting in an orthopedic implant for the acetabular cup.

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Abstract

The invention provides a tantalum coating orthopedic implant material, a preparation method thereof and an orthopedic implant. The tantalum coating orthopedic implant material comprises a matrix layer, a transition layer, a tantalum coating and a tantalum surface functional layer which are sequentially stacked, the matrix layer is made of titanium or titanium alloy, the melting point of the transition layer is lower than that of tantalum, and the tantalum coating is of a porous structure. According to the orthopedic implant material with the tantalum coating, on one hand, the binding force of the tantalum coating and the transition layer is improved; on the other hand, bone ingrowth is enhanced, so that the biocompatibility and osteoconductivity of the tantalum coating are improved, a microenvironment beneficial to cell growth is generated, and then bone tissue is promoted to grow towards the interior of the porous tantalum coating to form a unique bone-implant interface; the stability and function of the tantalum coating orthopedic implant in bone tissue are remarkably enhanced, osseointegration of a bone-implant interface is accelerated, in addition, the orthopedic implant is low in production cost, and the potential harmfulness of non-tantalum substances is small.

Description

technical field [0001] The invention relates to the technical field of orthopedic implants, in particular to a tantalum-coated orthopedic implant material, a preparation method thereof, and an orthopedic implant. Background technique [0002] Tantalum has good corrosion resistance, and the ionization degree of tantalum is extremely low in the in vivo environment, thus showing extremely low cytotoxicity. Implant products such as porous tantalum metal acetabular cups have been widely used clinically and have achieved great success. Good clinical effect. [0003] Invention patent CN109261958 proposes a preparation method of medical porous titanium or titanium alloy material coated with tantalum coating, but this technology coats the surface of porous titanium alloy with a dense tantalum coating, so that it can be implanted There are no pores for bone ingrowth in the back of the body, making it difficult for bone tissue to grow into the tantalum coating. [0004] In addition, ...

Claims

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Application Information

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IPC IPC(8): A61L27/06A61L27/30A61L27/56C22C14/00C23C24/10
CPCA61L27/06A61L27/306A61L27/56C23C24/106C22C14/00A61L2430/02A61L2420/08
Inventor 相冶魏崇斌
Owner BEIJING AKEC MEDICAL
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