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A forming method of low-grinding ultra-high molecular weight polyethylene composite hip joint socket

An ultra-high molecular weight, hip joint socket technology, applied in the direction of hip joints, acetabular sockets, joint implants, etc., to achieve the effects of reducing production costs, avoiding performance decline, and excellent self-lubricating properties

Active Publication Date: 2018-07-06
金湖县综合检验检测中心
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the forming method of graphene / carbon nanotube / UHMWPE composite artificial hip joint socket based on SLS technology has not been involved in the prior art in the field of precision manufacturing of medical low-friction artificial hip joint socket.

Method used

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  • A forming method of low-grinding ultra-high molecular weight polyethylene composite hip joint socket
  • A forming method of low-grinding ultra-high molecular weight polyethylene composite hip joint socket
  • A forming method of low-grinding ultra-high molecular weight polyethylene composite hip joint socket

Examples

Experimental program
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Effect test

Embodiment 1

[0032] The low-grinding ultra-high molecular weight polyethylene composite material hip joint socket forming method of the present invention uses laser selective sintering technology to form the ultra-high molecular weight polyethylene composite material hip joint socket, and the forming method includes:

[0033](1) Preparation of ultra-high molecular weight polyethylene composite powder: 15% by mass percentage of graphene, 15% by mass percentage of nanotubes, and 70% by mass percentage of ultra-high molecular weight polyethylene, respectively weigh graphene and carbon nanotubes and ultra-high molecular weight polyethylene powder, put graphene and carbon nanotube nanopowder in ethanol / sodium hexadecylbenzenesulfonate dispersant for ultrasonic dispersion for 30 minutes to obtain a stable graphene / carbon nanotube composite Nano-powder dispersion system, and then place the ultra-high molecular weight polyethylene powder in the graphene / carbon nanotube composite nano-powder dispers...

Embodiment 2

[0037] The difference between this embodiment and Example 1 is that when weighing in step (1), the graphene mass percentage is set to 8%, the nanotube mass percentage is 8%, and the ultra-high molecular weight polyethylene mass percentage is 84%; In step (3), the laser power is set to 60W, and the others are the same as in Example 1.

Embodiment 3

[0039] This embodiment differs from Example 2 in that the substrate preheating temperature is controlled at 70° C. in step (3); the laser scanning pitch is set to 60 μm in step (3), and the others are the same as in Example 2.

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Abstract

The invention discloses a method for forming a low-abrasion ultrahigh-molecular-weight polyethylene composite material hip joint. The method comprises the following steps: (1) preparation of ultrahigh-molecular-weight polyethylene composite powder: weighing graphene, a carbon nanotube and ultrahigh-molecular-weight polyethylene powder, placing the graphene and the carbon nanotube nano-powder into a dispersing agent for ultrasonic dispersion, and adding the ultrahigh-molecular-weight polyethylene powder into graphene / carbon nanotube composite nano-powder dispersing liquid for ultrasonic stirring and vacuum drying; (2) pretreatment of a model: performing three-dimensional solid modeling on a hip joint by using CAD (Computer-Aided Design) software, and performing hierarchical slicing treatment by using route planning software; (3) forming the ultrahigh-molecular-weight polyethylene composite material hip joint by using a selective laser sintering technology. In the method, the advanced selective laser sintering technology is adopted and the superior low-abrasion feature of a carbon material is utilized to form the low-abrasion ultrahigh-molecular-weight polyethylene composite material hip joint, so that the abrasion resistance of the hip joint is improved greatly.

Description

technical field [0001] The invention relates to a forming method of a hip joint socket, in particular to a forming method of a low-grinding ultra-high molecular weight polyethylene composite material hip joint socket, belonging to the technical field of bone implant manufacture. Background technique [0002] Ultra-high molecular weight polyethylene (UHMWPE) is a polymer with a molecular weight of more than 1.5 million. It has a unique composite structure of highly ordered lamellae embedded in random amorphous regions, extremely high molecular weight and high Molecular entanglement density endows it with excellent properties, such as low coefficient of friction, high chemical stability, good biocompatibility and self-lubricating properties. Therefore, it is widely used in joint replacement materials and has become the most important polymer material for artificial hip joint socket. The cyclic stress brought by people's daily activities and sports puts forward strict requirem...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61F2/34A61F2/30
CPCA61F2/30942A61F2/34A61F2002/30968A61F2002/3097
Inventor 夏木建林岳宾刘爱辉李年莲丁红燕鱼银虎陈中叶玮
Owner 金湖县综合检验检测中心