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

Cobalt-base alloy, as well as thermal processing and thermal treatment methods and application thereof

A heat treatment method and technology of cobalt-based alloy, applied in the field of medical materials, can solve the problem of in-stent restenosis that cannot be effectively suppressed, and achieve the effects of solving in-stent restenosis, reducing or inhibiting in-stent restenosis, and reducing the formation of thrombus.

Active Publication Date: 2015-03-25
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
View PDF3 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of the above problems, the present invention proposes a cobalt-based alloy and its thermal processing, heat treatment method and application to solve the problem that the existing coronary artery stent cannot effectively inhibit restenosis in the stent

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Cobalt-base alloy, as well as thermal processing and thermal treatment methods and application thereof
  • Cobalt-base alloy, as well as thermal processing and thermal treatment methods and application thereof
  • Cobalt-base alloy, as well as thermal processing and thermal treatment methods and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] The content is 20.26 (weight) % of Cr, W: 15.15 (weight) %; Ni: 10.18 (weight) %; Fe: 1.63 %; C: 0.08 (weight) %; Si: 0.58 (weight) %; Mn: 1.15(weight)%; Cu: 4.61(weight)%; the rest is cobalt-based alloy of Co and unavoidable impurities after hot working, specifically:

[0060] Homogenize the cobalt-based alloy at 1200-1250°C for 2-4 hours until the elements in the cobalt-based alloy are fully homogenized;

[0061] The cobalt-based alloy is billet-forged and multi-fired forged into rods and / or blooms, and the final forging temperature is not lower than 1000°C.

[0062] After thermal processing and then heat treatment, specifically:

[0063] Solid solution treatment of the cobalt-based alloy at 1100-1200°C for 1-2 hours until the copper element in the cobalt-based alloy is fully dissolved in the matrix;

[0064] Heat the cobalt-based alloy at 700°C for 2-6 hours until the supersaturated copper is precipitated and a certain amount of copper-rich phase is formed;

[006...

Embodiment 2

[0068] Repeat embodiment 1, following difference is arranged: content is that Cr is 19.87 (weight) %, W: 14.94 (weight) %; Ni: 9.54 (weight) %; Fe: 2.03 (weight) %; C: 0.03 (weight) % ) %; Si: 0.51 (weight) %; Mn: 0.98 (weight) %; Cu: 5.01 (weight) %; the rest is Co and unavoidable impurities Cobalt-based alloy after hot working and heat treatment. See Table 1 for the composition content data of the cobalt-based alloy in Example 2 above, and see Table 2 for the cobalt-based alloy after thermal processing and heat treatment.

Embodiment 3

[0070] Repeat embodiment 1, following difference is arranged: content is that Cr is 19.43 (weight) %, W: 15.59 (weight) %; Ni: 10.90 (weight) %; Fe: 1.98 (weight) %; C: 0.05 (weight) % ) %; Si: 0.80 (weight) %; Mn: 1.85 (weight) %; Cu: 5.45 (weight) %; the rest is Co and unavoidable impurities of cobalt-based alloy after hot working and heat treatment. See Table 1 for the composition content data of the cobalt-based alloy in Example 3, and see Table 2 for the cobalt-based alloy after thermal processing and heat treatment.

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
Tensile strengthaaaaaaaaaa
Tensile strengthaaaaaaaaaa
Login to View More

Abstract

The invention provides a cobalt-base alloy. The cobalt-base alloy comprises a Cu element, and the content of the Cu element is 4.5-5.5 percent by weight. The invention further provides a thermal processing method and a thermal treatment method of the cobalt-base alloy, as well as an application of the cobalt-base alloy as a coronary stent. The cobalt-base alloy can be used for persistently generating trace copper in the cardiovascular system, and is capable of inhibiting hyperplasia, migration and degeneration of artery smooth muscles caused after the coronary stent is implanted and effectively reducing formation of thrombus, so that the function of reducing or inhibiting in-stent restenosis caused after the coronary stent is implanted is realized.

Description

technical field [0001] The invention relates to medical materials, in particular to a cobalt-based alloy and its thermal processing, heat treatment method and application. Background technique [0002] Heart disease is one of the primary causes of human health threats, and now about 15 million patients with coronary heart disease worldwide need advanced PTCA (percutaneous transluminal coronary angioplasty, percutaneous coronary angioplasty). PTCA has the advantages of minimal trauma, high efficiency and easy repeatability, so it has become a rapidly developing new method for the treatment of coronary heart disease caused by cardiovascular stenosis. Finely shaped coronary stents are used in PTCA, which are currently mainly processed from medical metal materials such as L605 cobalt-based alloy and 316L stainless steel. [0003] However, a large number of clinical observations show that a certain degree of ISR (in-stent restenosis, in-stent restenosis) occurs after PTCA, espec...

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
IPC IPC(8): C22C19/07C22F1/10A61L27/04
Inventor 任玲杨柯张书源孙子晴杨春光
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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