Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Metal composite material and fused deposition 3D printing method of bone implant of metal composite material

A metal composite material, 3D printing technology, applied in the direction of bone implants, additive processing, etc., can solve the problems of poor strength, weak binding force, high brittleness, etc., to achieve good biocompatibility, easy bone bonding, Effect of low elastic modulus

Active Publication Date: 2016-08-03
广州尤尼智康生物科技有限公司
View PDF5 Cites 14 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, HA has high brittleness, low toughness, poor strength, and a large difference in thermal expansion coefficient with nickel-titanium alloy, and weak binding force.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The method for preparing a composite bone tissue implant by 3D printing in this embodiment is specifically:

[0037] 1) Input the STL model file of the human bone defect into the computer;

[0038] 2) Nitinol powder (the mass content of Ni is 50%) and two-component composite bone cement powder (including a mixture of hydroxyapatite and polymethyl methacrylate with a mass ratio of 6:4), Ball milling and mixing at a mass ratio of 7:3, that is, 70g of metal powder, 18g of hydroxyapatite, and 12g of polymethyl methacrylate, are mixed by ball milling. The specific parameters are: the diameter of the ball milling tank is 90mm, the height is 100mm, and the ball It is a zirconia ball, the diameter of the ball is 5mm, the mass ratio of the ball to the powder to be mixed is 5:1, the ball milling speed is 120r / min, and the ball milling time is 30min. After fully mixing, add it to the powder barrel of the 3D printer;

[0039]3) Add the liquid agent of the two-component composite b...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
tensile strengthaaaaaaaaaa
elastic modulusaaaaaaaaaa
tensile strengthaaaaaaaaaa
Login to View More

Abstract

The invention discloses a metal composite material and a fused deposition 3D printing method of a bone implant of the metal composite material. The metal composite material comprises a nickel-titanium alloy and double-component composite bone cement, and the mass ratio of the nickel-titanium alloy to the double-component composite bone cement is 10-16:8-14. The 3D printing method includes the steps that firstly, an STL model file is input; secondly, the nickel-titanium alloy and powder of the double-component composite bone cement are subjected to ball milling mixing, and a discharged mixture is added into a powder charging barrel; thirdly, liquid of the double-component composite bone cement is added into a liquid charging barrel; and fourthly, technological parameters of a 3D printer are adjusted, the discharged material of the powder charging barrel and a discharged material of the liquid charging barrel are input into a printing nozzle after being evenly mixed, printing forming is conducted, and sintering is conducted after curing. The binding force of the composite bone cement and the nickel-titanium alloy can be improved, the composite bone cement is prevented from being disengaged, the biological activity of the nickel-titanium alloy is improved, and biocompatibility between the implant of the metal composite material and the human tissue is improved.

Description

technical field [0001] The invention belongs to the technical field of 3D printing medical implant devices, and in particular relates to a metal composite material for preparing bone implants and a method for 3D printing composite bone tissue implants based on fusion deposition technology. Background technique [0002] Nickel-titanium shape memory alloy (NiTi) is widely used in human bone tissue implants due to its high strength, low specific gravity, good fatigue resistance, corrosion resistance, wear resistance, and low elastic modulus, which is close to the elasticity of human bone. Alloy bone implant materials have no biological activity and cannot form osseointegration with human bone, which will easily lead to loss of implant function and implant failure. Hydroxyapatite (HA) is the main inorganic component of human bone tissue. It has good biocompatibility and osteoconductivity. The preparation of HA-containing coatings on the surface of nickel-titanium alloys has a re...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): B22F3/22B22F3/15B33Y30/00A61F2/28
CPCA61F2/28A61F2002/2835B22F3/15B22F3/22B22F2998/10B33Y30/00B22F1/0003
Inventor 王红胡海龙陈静张楠
Owner 广州尤尼智康生物科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com