WO2018040301A1 - Alliage co-cr-mo, procédé d'usinage de scalpel pour opération à effraction minimale et scalpel pour opération à effraction minimale - Google Patents

Alliage co-cr-mo, procédé d'usinage de scalpel pour opération à effraction minimale et scalpel pour opération à effraction minimale Download PDF

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Publication number
WO2018040301A1
WO2018040301A1 PCT/CN2016/106411 CN2016106411W WO2018040301A1 WO 2018040301 A1 WO2018040301 A1 WO 2018040301A1 CN 2016106411 W CN2016106411 W CN 2016106411W WO 2018040301 A1 WO2018040301 A1 WO 2018040301A1
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WO
WIPO (PCT)
Prior art keywords
processing
alloy
minimally invasive
treatment
temperature
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Application number
PCT/CN2016/106411
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English (en)
Chinese (zh)
Inventor
李云平
聂炎
李军旗
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深圳市圆梦精密技术研究院
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Publication of WO2018040301A1 publication Critical patent/WO2018040301A1/fr

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C19/00—Alloys based on nickel or cobalt
    • C22C19/07—Alloys based on nickel or cobalt based on cobalt
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/00234—Surgical instruments, devices or methods, e.g. tourniquets for minimally invasive surgery
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/32—Surgical cutting instruments
    • A61B17/3209—Incision instruments
    • A61B17/3211—Surgical scalpels, knives; Accessories therefor
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/02—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working in inert or controlled atmosphere or vacuum
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/10—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of nickel or cobalt or alloys based thereon

Definitions

  • Co-Cr-Mo alloy processing method of minimally invasive scalpel and minimally invasive scalpel
  • the present invention belongs to the technical field of cobalt-based alloys for medical devices, and more particularly to a Co-Cr-Mo alloy, a processing method for a minimally invasive scalpel, and a minimally invasive scalpel.
  • an embodiment of the present invention provides a Co-Cr-Mo alloy, a processing method of a minimally invasive scalpel, and a minimally invasive scalpel.
  • a Co-Cr-Mo alloy consisting of the following components in mass percentage:
  • the balance is Co and unavoidable impurities, wherein the content of the Zr does not take zero.
  • a method for processing a minimally invasive scalpel comprising at least the following steps:
  • the tool obtained by processing the plate material is subjected to a aging treatment and a nitriding treatment.
  • the Co-Cr-Mo alloy provided by the above embodiments of the present invention increases the alloy ⁇ phase by adding carbon to the Co-Cr-Mo, so that the alloy has a biocompatible homologous to form a dispersed carbide.
  • the corrosion resistance and biocompatibility at the interface are improved, the hot workability of the material is improved, and the elastic modulus, tensile strength and wear resistance of the alloy are finally improved.
  • the method for processing a minimally invasive scalpel uses a plastic processing method to homogenize the alloy obtained by smelting, so that the components of the alloy are uniform, and the carbides and nitrides are dispersed and distributed.
  • the performance of the alloy is uniform and stable.
  • the hardness of the minimally invasive scalpel is 700 ⁇ 900H V and the strength is up to 1200 ⁇ 1300MPa, which greatly improves the elasticity and cutting performance of the scalpel.
  • FIG. 1 is an IQ (Image quality) diagram of EBSD after solution treatment of the Co-24Cr-4Mo-0.15C alloy according to an embodiment of the present invention.
  • FIG. 1b is an embodiment of the present invention, after the solution treatment of Co-24Cr-4Mo-0.1C alloy is carried out at 1100 ° C, the relative speed is
  • FIG. 1c is an IQ diagram of EBSD after a solution treatment of a Co-24Cr-4Mo-0.15C alloy according to an embodiment of the present invention after 1100 ° C, a relative speed of 1.0 s - 60% + 900 ° C, 60% deformation.
  • 1D is an EBSD of a Co-24Cr-4Mo-0.2C alloy after solution treatment at 1100 ° C, a relative speed of 1.0 s - ', 60% + 900 ° C, 60% deformation after the solution treatment of the embodiment of the present invention.
  • IQ diagram
  • FIG. 1 is a sample of Co-24Cr-4Mo-0.2C-0.15N-0.05Zr alloy after solution treatment, after 1100 °C, relative speed is 1.0s - 60% + 900 °C, IQ map of EBSD after 60% deformation;
  • 2a is a topographical view of a Co-24Cr-4Mo-0.2C-0.15N alloy oxidized in air at 700 ° C according to an embodiment of the present invention
  • 2b is a topographical view of the Co-24Cr-4Mo-0.2C-0.15N-0.05Zr alloy oxidized in air at 700 ° C according to an embodiment of the present invention
  • 3a is a cross-sectional view of a Co-24Cr-4Mo-0.2C-0.15N alloy oxidized in air at 700 ° C according to an embodiment of the present invention
  • 3b is a cross-sectional view of a Co-24Cr-4Mo-0.2C-0.15N-0.05Zr alloy oxidized in air at 700 ° C according to an embodiment of the present invention
  • a Co-29Cr-6Mo
  • b Co-24Cr-4Mo
  • c Co-24Cr-4Mo-0.
  • Embodiments of the present invention provide a Co-Cr-Mo alloy.
  • the Co-Cr-Mo alloy consists of the following components:
  • the balance is Co and unavoidable impurities, wherein the content of the Zr is not taken as zero.
  • Cr can improve the corrosion resistance and biocompatibility of the alloy.
  • the Cr content is lower than 22%, the presence of Cr does not improve the corrosion resistance of the alloy; after adding the Zr element, since Zr is in the alloy The surface can quickly form a dense oxide film, so that the Cr content is within 26% to ensure the corrosion resistance and biocompatibility of the alloy, and when the Cr content exceeds 26%, it is prone to occur in the subsequent heat treatment process.
  • the ⁇ phase that causes the brittleness of the alloy.
  • Mo can improve the grain boundary corrosion performance of the alloy, and solid solution strengthening.
  • Zr can form a dense oxide film on the surface of the alloy quickly. Compared with the prior art, the corrosion resistance and biocompatibility of the alloy can be ensured under the condition of Mo content of 3 to 6%. .
  • the C element having a mass percentage of 0.1 to 0.2% can form a carbide in the alloy to increase the strength of the alloy.
  • the cerium element having a mass percentage of 0.05 to 0.2% can improve the alloy processing property and grain refinement in the alloy.
  • the Zr element can repair the passivation film on the surface of the alloy in the alloy, and further increase the metal ion precipitation of the alloy in the body.
  • the Zr element content is above 0.06%, a brittle s phase is formed in the alloy, which is distributed at the grain boundary, which reduces the toughness of the alloy. Therefore, the Zr content is generally controlled at 0 to 0.06%, and the value of 0 is not taken.
  • the mass percentage of Zr is 0.03 to 0.06 ⁇ 3 ⁇ 4.
  • the Zr content is 0.03 0.06% ⁇ , which can ensure that Cr and Mo can play a corresponding role in the alloy at the above content, and ensure the corrosion resistance and biocompatibility of the alloy.
  • the Co-Cr-Mo alloy provided by the above embodiments of the present invention, by adding carbon to Co-Cr-Mo, makes the alloy have a biocompatible homologous to form a dispersed carbide, thereby improving the alloy ⁇ phase.
  • the stability, especially the Zr element repairs the passivation film on the surface of the alloy compensates for the deficiency of Cr and Mo elements at the interface between the carbide and the alloy matrix, improves the corrosion resistance and biocompatibility at the interface, and also improves the alloy. Modulus of elasticity, tensile strength and wear resistance.
  • the present invention further provides a processing method of a minimally invasive scalpel based on the Co-Cr-Mo alloy formulation component provided in the above embodiments.
  • the method for processing the minimally invasive scalpel comprises at least the following steps: weighing the components according to the formulation of the Co-Cr-Mo alloy as described above;
  • the tool obtained by processing the sheet material is subjected to a aging treatment and a nitriding treatment.
  • the melting temperature of the alloy is 1500 ° C and 1500 ° C or more.
  • it is 1500 to 1800 ° C, and in this temperature range, melting of all metal components can be achieved.
  • the temperature exceeds 1800 °C, it will cause waste of energy.
  • the alloy smelting process should be carried out under an argon (Ar) atmosphere to avoid the presence of oxygen in the smelting atmosphere which may cause pitting or voiding of the alloy after smelting.
  • Ar argon
  • the temperature is maintained for 30 to 60 minutes to ensure that the components are uniformly melted.
  • the molten alloy is cast into an alloy block. The alloy is then homogenized.
  • the alloy is homogenized, and the temperature of the homogenization treatment should be 1250 ⁇ 1350 ° C in a vacuum or an inert atmosphere, the heating rate is 10-20 ° C / min, and the temperature is kept for 10-24 h. This is followed by furnace cooling or rapid cooling of the high pressure gas.
  • the high pressure gas is any one of high pressure nitrogen or high pressure inert gas
  • the pressure of the high pressure gas is 0.2 to 0.8 MPa; and the cooling rate of the high pressure nitrogen or high pressure inert gas is 20 to 50 ° C / s.
  • the cooling method has no segregation of the alloy composition.
  • the homogenized alloy is subjected to a hot working treatment.
  • the thermal processing includes a first stage thermal processing and a second stage thermal processing.
  • the first stage of the hot working treatment has a temperature of 1100 to 1200 ° C, a relative processing rate of 1 to 10 / s, a processing rate of 60 to 70%, and then natural cooling to 800 to 1000 ° C.
  • the segment thermal processing after the first thermal processing, achieves homogenization of the alloy and prevents the alloy from splitting during subsequent processing.
  • the second stage thermal processing refers to a temperature of 8 00 to 1000 ° C, a relative processing rate of 1 to 10 / s, and a processing rate of 50 to 70%.
  • the grain of the alloy is sharply refined to the micron or submicron level to improve the hardness of the alloy.
  • the sheet is treated as a two-stage hot rolling process.
  • the first section of the hot rolling treatment has a hot rolling temperature of 1100 to 1200 ° C, a relative processing rate of 1 to 10 / s, a processing rate of 60 to 70%, and then natural cooling to 800 to 1000.
  • the second section of the hot rolling treatment is started at ° C; further preferably, the second section of the hot rolling treatment has a temperature of 800 to 1000 ° C, and the relative processing rate is 1 to 1 0/s, processing rate is 50 ⁇ 70 ⁇ 3 ⁇ 4.
  • the tool is subjected to a treatment effect.
  • the conditions for treatment are in a vacuum or protective atmosphere at 70
  • the nitriding treatment refers to placing the treated tool in an ammonia atmosphere, at 40
  • Insulation from 0 to 600 °C for l ⁇ 5h. After nitriding, the hardness and cutting properties of the alloy (ie, the tool) surface are improved.
  • the Co-Cr-Mo alloy provided by the embodiment of the present invention adopts the above method, that is, plastic processing, to prepare a minimally invasive scalpel, and the surface hardness of the knife edge reaches 700-900 HV (Vickers hardness), and the strength is 1200-1300 MPa.
  • the 0.2% yield strength is greater than 900 MPa, which greatly improves the knife edge hardness and cutting performance of the scalpel.
  • Different embodiments of the alloy are prepared into a scalpel, and the hardness of the knife edge after nitriding can be further improved on the basis of the hardness of the alloy in Table 1, and the cutting performance of the scalpel is greatly improved.
  • the surface contains a trace amount of Zr element, which is favorable for forming a denser oxide film on the surface.
  • a small amount of Zr element on the surface is favorable for forming a denser oxide film on the surface of the alloy, suppressing precipitation of the alloying element through the oxide film in the living environment, and improving the biocompatibility of the alloy.
  • a Co-29Cr-6Mo
  • b Co-24Cr-4Mo
  • c Co-24Cr-4Mo-0.15C-0.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Surgery (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
  • Materials For Medical Uses (AREA)

Abstract

La présente invention concerne un alliage Co-Cr-Mo, composé des constituants suivants en pourcentage en masse : de 22 à 26 % de Cr, de 3 à 6 % de Mo, de 0,1 à 0,2 % de C, de 0,05 à 0,2 % de N et 0 à 0,06 % de Zr, le reste étant du Co et des impuretés inévitables et la teneur en Zr étant non nulle. Pour un scalpel constitué de l'alliage Co-Cr-Mo et destiné à un usage à effraction minimale, la dureté du bord de coupe peut aller jusqu'à 700-900 HV et la résistance va de 1200 à 1300 MPa, de telle sorte que l'élasticité et la propriété de coupe du scalpel sont grandement améliorées.
PCT/CN2016/106411 2016-08-29 2016-11-18 Alliage co-cr-mo, procédé d'usinage de scalpel pour opération à effraction minimale et scalpel pour opération à effraction minimale WO2018040301A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201610752011.4A CN106282671B (zh) 2016-08-29 2016-08-29 Co-Cr-Mo合金、微创手术刀的加工方法和微创手术刀
CN201610752011.4 2016-08-29

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101052734A (zh) * 2004-11-19 2007-10-10 国立大学法人岩手大学 通过组织控制而抑制了离子溶出的生物用Co－Cr－Mo合金及其制造方法
JP5156943B2 (ja) * 2006-10-31 2013-03-06 国立大学法人岩手大学 塑性加工性に優れる生体用Ｃｏ基合金の製造方法
JP5592600B2 (ja) * 2007-07-24 2014-09-17 株式会社神戸製鋼所 熱間型鍛造用の生体用Ｃｏ基合金素材及びその製造方法
JP5616845B2 (ja) * 2011-05-25 2014-10-29 株式会社神戸製鋼所 生体用Ｃｏ基合金の製造方法
CN104263999A (zh) * 2014-10-11 2015-01-07 上海大学兴化特种不锈钢研究院 一种新型高塑性医用钴基合金

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JP2005126041A (ja) * 2003-07-31 2005-05-19 Takata Corp 乗員保護装置
EP1696044A1 (fr) * 2005-02-16 2006-08-30 BEGO Bremer Goldschlägerei Wilh. Herbst GmbH & Co. KG Alliage pour la fabrication de prothèse dentaire céramique
JP5303718B2 (ja) * 2006-06-22 2013-10-02 国立大学法人岩手大学 多孔質Ｃｏ基合金焼結被覆材およびその製造方法
JP6086444B2 (ja) * 2011-09-08 2017-03-01 国立大学法人東北大学 アルミニウムダイキャスト金型用合金組成物およびその製造方法
CN105750553A (zh) * 2016-02-21 2016-07-13 谭陆翠 一种肿瘤切除刀

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101052734A (zh) * 2004-11-19 2007-10-10 国立大学法人岩手大学 通过组织控制而抑制了离子溶出的生物用Co－Cr－Mo合金及其制造方法
JP5156943B2 (ja) * 2006-10-31 2013-03-06 国立大学法人岩手大学 塑性加工性に優れる生体用Ｃｏ基合金の製造方法
JP5592600B2 (ja) * 2007-07-24 2014-09-17 株式会社神戸製鋼所 熱間型鍛造用の生体用Ｃｏ基合金素材及びその製造方法
JP5616845B2 (ja) * 2011-05-25 2014-10-29 株式会社神戸製鋼所 生体用Ｃｏ基合金の製造方法
CN104263999A (zh) * 2014-10-11 2015-01-07 上海大学兴化特种不锈钢研究院 一种新型高塑性医用钴基合金

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CN106282671B (zh) 2018-05-25

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