Method for producing titanium alloy artificial hip joint with abrasion-proof ceramic coat

A technology of wear-resistant ceramics and manufacturing methods, which is applied in the direction of hip joints, joint implants, joint implants, etc., can solve the problems of low bonding strength between the film and the substrate, poor wear resistance and durability, and poor mechanical bearing capacity. Achieve the effect of avoiding galvanic corrosion, prolonging service life and good friction reduction

Inactive Publication Date: 2012-04-25
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problems of thin film thickness, low bonding strength between the film and the substrate, poor mechanical bearing capacity and poor wear-resistant and durable stability of the existing femoral head with a film layer, and to provide a wear-resistant Manufacturing method of titanium alloy artificial hip joint with ceramic coating

Method used

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  • Method for producing titanium alloy artificial hip joint with abrasion-proof ceramic coat
  • Method for producing titanium alloy artificial hip joint with abrasion-proof ceramic coat
  • Method for producing titanium alloy artificial hip joint with abrasion-proof ceramic coat

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specific Embodiment approach 1

[0008] Specific implementation mode one: combine figure 1 This embodiment is described. This embodiment includes a titanium alloy femoral head 5 and a titanium alloy hip cup 4 mated with it. The hip joint also includes a wear-resistant ceramic coating 2, and the wear-resistant ceramic coating 2 is coated on titanium On the spherical surface of the alloy femoral head 5 and on the surface of the titanium alloy hip cup 4, a cylindrical groove 3 is opened on the upper end surface of the titanium alloy femoral head 5 to cooperate with the stem.

specific Embodiment approach 2

[0009] Specific implementation mode two: combination figure 2 and image 3 Describe this embodiment, the manufacture method of the titanium alloy artificial hip joint with wear-resistant ceramic coating of this embodiment is finished like this: Step 1, the titanium alloy femoral head 5 and titanium alloy hip cup 4 of pre-ceramization treatment are respectively Grinding and polishing to the mirror surface, the two clamps 7 are respectively installed and clamped on the bottom surface of the cylindrical groove 3 on the upper end surface of the titanium alloy femoral head 5 and on the titanium alloy hip cup 4, and the cylindrical groove on the upper end surface of the titanium alloy femoral head 5 is fixed. Shape groove 3 is filled with insulation shielding object 8, and an anode contact wire 6 is embedded in insulation shield object 8 simultaneously, and anode contact wire 6 is connected with fixture 7 on the bottom surface of cylindrical groove 3, and another anode contacts Th...

specific Embodiment approach 3

[0010] Specific implementation mode three: combination figure 2 This embodiment is described. The difference between this embodiment and the second embodiment is that the clamp 7 in the first step of this embodiment is made of aluminum alloy or titanium alloy. The fixture is in close contact with the titanium alloy femoral head 5 and the titanium alloy hip cup 4, thereby avoiding contact point ablation due to poor contact under high-voltage discharge conditions.

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Abstract

The invention relates to a manufacturing method of a titanium alloy artificial hip joint provided with a wear-resistant ceramic coat, which relates to the titanium alloy artificial hip joint and the manufacturing method thereof. The invention solves the problems existing in the existing caput femoris provided with a film of thin film thickness, low bonding strength of the film and a matrix, poor mechanical bearing strength and bad wear resistance and durable stability. The wear-resistant ceramic coat is coated on the spherical surface of the titanium alloy caput femoris and the surface of a titanium alloy articulation coax cup. A cylindrical slot that has fit connection with a femur handle is arranged on the upper end surface of the titanium alloy caput femoris. The method of the invention is that the joint is polished, shielded, installed and blocked; then the joint is processed by spark intensifying electrochemical oxidation to produce the wear-resistant ceramic coat; the joint is taken out, cleaned and dried; and finally, the surface of the joint is processed by polishing treatment. The artificial hip joint of the invention has the advantages of thick caput femoris film, strong bonding strength of the film and the matrix, good mechanical bearing strength and sound wear resistance and durable stability, etc. And the manufacturing method of the invention has simple process flows.

Description

technical field [0001] The invention relates to a manufacturing method of a titanium alloy artificial hip joint. Background technique [0002] Artificial hip replacement has become an effective treatment for hip joint disease. However, during normal activities of the human body, due to the mechanical load and the friction of relative motion, the femoral head implant usually wears or causes the wear of the dual articular cartilage. Although the ceramic femoral head has good wear resistance, its toughness is low, its quality is brittle, and its ability to withstand impact loads is poor, so its application is limited. Titanium alloy has excellent biocompatibility and is being used as a femoral head material, but its hardness is low and its wear resistance is poor. The authorized announcement number is CN86202828, and the authorized announcement date is September 2, 1987. The utility model patent disclosed "broad-beam mixed ion implantation of titanium alloy artificial total h...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61F2/32A61L27/06
CPCA61F2/30767A61F2002/30001
Inventor 王亚明王毅王长利周玉贾德昌
Owner HARBIN INST OF TECH
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