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Antibacterial infectious forging cobalt-based alloy used for surgical implant and preparation method thereof

A technology for surgical implants and cobalt-based alloys is applied in the field of antibacterial infection forging cobalt-based alloys for surgical implants and their preparation, which can solve the problems of heavy economic burdens, surgical failures, chronic osteomyelitis, etc. Effects of bacterial infection risk

Active Publication Date: 2015-05-27
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Postoperative infection in orthopedics will directly cause the patient's wound to not heal for a long time, often lead to operation failure, and even lead to complications such as chronic osteomyelitis. Negative impacts of varying degrees on society

Method used

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  • Antibacterial infectious forging cobalt-based alloy used for surgical implant and preparation method thereof
  • Antibacterial infectious forging cobalt-based alloy used for surgical implant and preparation method thereof

Examples

Experimental program
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Embodiment Construction

[0020] According to the chemical composition range set by the forged cobalt-based alloy of the present invention, the cobalt-based alloy for surgical implants of the present invention adopts 15 kilograms of vacuum induction furnace smelting Examples 1-3 and Comparative Examples 1-6 each 10 kilograms of forged cobalt-based alloy , and its chemical composition is shown in Table 1.

[0021] The forging process is as follows: the alloy ingot is homogenized and heat-treated at 1200°C±20°C for 2 hours to open the billet, and is divided into three fires for forging into a 50×80mm rough-rolled plate, and the final forging temperature is 960°C.

[0022] The hot-rolling process is as follows: the first-rolled billet is kept at a temperature of 1180°C±20°C for 2 hours to start rolling, and is rolled into a performance test plate through multi-pass rolling. The thickness of the plate in this embodiment is 11mm.

[0023] The heat treatment process is as follows: the test plate is sampled p...

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Abstract

The invention relates to the medical cobalt-based alloy material field, and concretely relates to an antibacterial infectious forging cobalt-based alloy used for surgical implant and a preparation method thereof. The cobalt-based alloy comprises the following chemical components by weight percentage: 26.5-30.5 of Cr, 9.0-11.0 of Ni, 14.0-16.0 of W, 1.0-4.0 of Cu or 0.02-0.1% of Ce, 0.05-0.2 of N, and the balance of Co; wherein the impurity element content in the alloy can accord with the corresponding requirements of a national standard of the medical forging cobalt-based alloy. The medical forging cobalt-based alloy has unique antibacterial infection function, can obviously reduce the bacteria infection risk due to medical instrument usage in current medical technology, and can be widely used in various medical apparatus in the clinical medical fields of orthopaedic and stomatological departments as well as cardiovascular stent.

Description

technical field [0001] The invention relates to the technical field of cobalt-based alloy materials, in particular to an anti-bacterial infection forged cobalt-based alloy for surgical implants and a preparation method thereof, which has a unique anti-bacterial infection function and can be widely used in various artificial joints, artificial Manufacturing of orthopedic internal and external fixation parts, dentures in dental restoration, cardiovascular stents and other cobalt-based alloy medical devices for surgical implants used in clinical fields. Background technique [0002] Due to its good corrosion resistance, wear resistance and thermal fatigue resistance, medical cobalt-based alloys have high thermal conductivity, low thermal expansion coefficient, Young's modulus does not change with its strength, good biocompatibility, etc. The advantages are applied to fields such as national defense, chemical industry, energy and biological engineering. The international ISO me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C19/07C22F1/16
Inventor 杨春光王帅任玲杨柯
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI