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公开(公告)号：US20220017996A1
公开(公告)日：2022-01-20
申请号：US17295778
申请日：2019-11-18
Applicant: TANAKA KIKINZOKU KOGYO K.K.
Inventor： Shubham YADAV , Yuya KATO , Kenji GOTO , Kunihiro SHIMA
Abstract: The present invention relates to an alloy for medical use, including Pt, Co, Cr, Ni, and Mo. The alloy includes 10 atom % or more and 30 atom % or less of Pt, 20 atom % or more and 31 atom % or less of Cr, 5 atom % or more and 24 atom % or less of Ni, 4 atom % or more and 8 atom % or less of Mo, the balance Co, and unavoidable impurities, and a ratio of the Ni content (CNi) to the Pt content (CPt), CNi/CPt is 1.5 or less. The present invention can be applied to various kinds of devices for medical use, such as catheter, embolic coils, and guide wires, in addition to stents such as flow-diverter stents.
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公开(公告)号：US20210010120A1
公开(公告)日：2021-01-14
申请号：US16968764
申请日：2019-02-28
Applicant: TOKYO INSTITUTE OF TECHNOLOGY , TANAKA KIKINZOKU KOGYO K.K.
Inventor： Hideki HOSODA , Akira UMISE , Kenji GOTO
IPC: C22F1/00 , C22F1/14 , C22C5/02 , A61L29/02 , A61L29/14 , A61L31/02 , A61L31/14 , A61L27/04 , A61L27/50
Abstract: The present invention provides a shape-memory alloy including a Au—Cu—Al alloy having 20 at % or more and 40 at % or less Cu and 15 at % or more and 30 at % or less Al, with the balance being Au and inevitable impurities. The shape-memory alloy has a Vickers hardness of 360 Hv or less. The Au—Cu—Al alloy of the present invention is an alloy capable of developing both biocompatibility and a shape-memory effect, and further capable of achieving artifactlessness in a magnetic environment. The Au—Cu—Al alloy can be produced by heat-treating a clad material formed of a combination of a hollow material made of a Au—Cu alloy and a core material made of metallic Al at 500° C. or more and 700° C. or less.
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公开(公告)号：US20190030215A1
公开(公告)日：2019-01-31
申请号：US16069955
申请日：2017-03-02
Applicant: TANAKA KIKINZOKU KOGYO K.K.
Inventor： Michimasa OKUBO , Kenji GOTO
Abstract: The present invention is an embolization coil having an optimum morphological stability. The embolization coil includes a wire material made of an Au—Pt alloy. The wire material constituting the embolization coil has such a composition that a Pt concentration is 24 mass % or more and less than 34 mass %, with the balance being Au. The wire material has such a material structure that a Pt-rich phase of an Au—Pt alloy having a Pt concentration of 1.2 to 3.8 times a Pt concentration of an α phase is distributed in an α phase matrix. The wire material has a bulk susceptibility of −13 ppm or more and −5 ppm or less. In a material structure of a transverse cross-section of the wire material, an average value of two or more average crystal particle diameters measured by a linear intercept method is 0.20 μm or more and 0.35 μm or less.
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公开(公告)号：US20230113633A1
公开(公告)日：2023-04-13
申请号：US18081322
申请日：2022-12-14
Applicant: TANAKA KIKINZOKU KOGYO K.K. , TOKUSHIMA UNIVERSITY
Inventor： Michimasa OKUBO , Kenji GOTO , Kunihiro TANAKA , Kojiro SHIRAISHI , Kunihiro SHIMA , Yuya KATO , Kenichi HAMADA , Eiichi HONDA , Emi TAKEGAWA
Abstract: The present invention relates to a medical Au-Pt-Pd alloy including Au, Pt,Pd, and inevitable impurities. The Au-Pt-Pd alloy has an alloy compositioninside a polygon (A1-A2-A3-A4) surrounded by straight lines connected at pointA1 (Au: 53 atom%, Pt: 4 atom%, and Pd: 43 atom%), point A2 (Au: 70 atom%,Pt: 4 atom%, and Pd: 26 atom%), point A3 (Au: 69.9 atom%, Pt: 30 atom%, and Pd: 0.1 atom%), and point A4 (Au: 49.9 atom%, Pt: 50 atom%, and Pd: 0.1 atom%) in a Au-Pt-Pd ternary state diagram. In a metal structure of the alloy, at least one of a Au-rich phase and a Pt-rich phase is distributed, and the total of the area ratio of the Au-rich phase and the area ratio of the Pt-rich phase is 1.5% or more and 25.4% or less.
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公开(公告)号：US20150344510A1
公开(公告)日：2015-12-03
申请号：US14655076
申请日：2014-01-20
Applicant: TANAKA KIKINZOKU KOGYO K.K.
Inventor： Masayuki SAITO , Hirofumi NAKAGAWA , Toshiyuki SHIGETOMI , Kenji GOTO
IPC: C07F15/00
CPC classification number: C07F15/0046 , C01G55/008 , C23C16/16 , C23C16/45553
Abstract: The present invention is a method for producing dodecacarbonyl triruthenium (DCR) including a process of carbonylating ruthenium chloride with carbon monoxide, in which an amine is added to a reaction system at 0.8 molar equivalent or more with respect to chlorine of the ruthenium chloride and the carbonylation is conducted at a reaction temperature of 50 to 100° C. and a reaction pressure of 0.2 to 0.9 MPa. According to the present invention, it is possible to produce dodecacarbonyl triruthenium having less residual impurity metals without applying a reaction condition of a high pressure.
Abstract translation: 本发明是一种生产十二羰基三钌（DCR）的方法，其包括使用一氧化碳羰基化氯化钌的方法，其中胺相对于氯化钌的氯为0.8摩尔当量以上而添加到反应体系中， 在50〜100℃的反应温度和0.2〜0.9MPa的反应压力下进行羰基化。 根据本发明，可以在不施加高压反应条件的情况下制造具有较少残留杂质金属的十二羰基三钌。
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Patent Agency Ranking
公开(公告)号：US20170029927A1
公开(公告)日：2017-02-02
申请号：US15106508
申请日：2014-01-30
Applicant: TANAKA KIKINZOKU KOGYO K.K. , KYOTO UNIVERSITY
Inventor： Kunihiro SHIMA , Kenji GOTO , Yasushi MASAHIRO , Asaka UENO , Hiroo IWATA , Ryusuke NAKAI , Tomonobu KODAMA
Abstract: The present invention provides an alloy for medical use including an Au—Pt alloy, in which the Au—Pt alloy has a Pt concentration of 24 mass % or more and less than 34 mass % with the balance being Au, and has at least a material structure in which a Pt-rich phase having a Pt concentration higher than that of an α-phase is distributed in an α-phase matrix, the Pt-rich phase has a Pt concentration that is 1.2 to 3.8 times the Pt concentration of the α-phase, and the Pt-rich phase has an area ratio of 1 to 22% in any cross-section. This alloy is an artifact-free alloy material that exhibits excellent compatibility with a magnetic field environment such as an MRI and has magnetic susceptibility of ±4 ppm with respect to magnetic susceptibility of water.
Abstract translation: 本发明提供一种医疗用合金，其包括Au-Pt合金，其中Au-Pt合金的Pt浓度为24质量％以上且小于34质量％，余量为Au，并且至少具有 其中Pt浓度高于α相的Pt富集相分布在α相基质中的富Pt相的Pt浓度为Pt浓度的1.2〜3.8倍 α相，并且富Pt相在任何横截面中具有1至22％的面积比。 该合金是与MRI等磁场环境优异的相容性的无伪影合金材料，相对于水的磁化率具有±4ppm的磁化率。
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公开(公告)号：US20170314100A1
公开(公告)日：2017-11-02
申请号：US15518112
申请日：2015-10-14
Applicant: TANAKA KIKINZOKU KOGYO K.K. , TOKYO INSTITUTE OF TECHNOLOGY
Inventor： Hideki HOSODA , Tomonari INAMURA , Masaki TAHARA , Yuri SHINOHARA , Kota FUCHIWAKI , Kenji GOTO
CPC classification number: C22C14/00 , A61L31/00 , A61L2400/16 , C22F1/00 , C22F1/006 , C22F1/18 , C22F1/183
Abstract: The present invention provides a superelastic alloy containing Au in an amount of 8.0% by mass or more and 20.0% by mass or less and at least one of Cr and Mo as essential additive elements, Ta as an optional additive element, and Ti and inevitable impurities as a balance, wherein the Cr equivalent calculated on the basis of the following formula for the relationship of the Cr content, the Mo content and the Ta content is within the range of more than 0.5 and less than 8.0. The alloy is a Ni-free superelastic alloy, and has favorable X-ray-imaging property. Accordingly, the alloy can be suitably used in medical fields. Cr equivalent=[Cr content (% by mass)]+([Mo content (% by mass)]/1.7)+([Ta content (% by mass)]/15) [Formula 1]
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公开(公告)号：US20160367729A1
公开(公告)日：2016-12-22
申请号：US14898794
申请日：2014-01-30
Applicant: TANAKA KIKINZOKU KOGYO K.K. , KYOTO UNIVERSITY
Inventor： Kunihiro SHIMA , Kenji GOTO , Yasushi MASAHIRO , Asaka UENO , Hiroo IWATA , Ryusuke NAKAI , Tomonobu KODAMA
CPC classification number: A61L29/02 , A61L31/022 , B22D7/005 , B22D21/005 , C22C1/02 , C22C5/02 , C22F1/00 , C22F1/14
Abstract: The present invention is an alloy for medical use including an Au—Pt alloy, containing 34 to 36 mass % of Pt with the balance being Au, and having an α-phase single structure in which a ratio of a peak intensity (X) of a Pt (111) plane to a peak intensity (Y) of an Au (111) plane (X/Y) is 0.01 or less in an X-ray diffraction analysis. The alloy can be produced in such a manner that after the Au—Pt alloy ingot is molten and cast, cold working and a heat treatment for homogenization are performed at least two times on the molten and cast alloy. The alloy of the present invention is an artifact-free material that exhibits excellent compatibility with a magnetic field environment such as an MRI and has magnetic susceptibility of ±4 ppm with respect to that of water.
Abstract translation: 本发明是一种医疗用合金，其包括Au-Pt合金，其含有34〜36质量％的Pt，余量为Au，具有α相单结构，其中，峰强度（X） 在X射线衍射分析中，Au（111）面（X / Y）的Pt（111）面至峰强度（Y）为0.01以下。 该合金可以以这样的方式制造：在熔融和铸造Au-Pt合金锭之后，对熔融和铸造合金进行至少两次的冷加工和用于均化的热处理。 本发明的合金是与MRI等磁场环境相容性好的无伪影物质，相对于水的磁化率为±4ppm。
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公开(公告)号：US20160362772A1
公开(公告)日：2016-12-15
申请号：US14913810
申请日：2014-08-29
Applicant: TANAKA KIKINZOKU KOGYO K.K. , TOYO INSTITUTE OF TECHNOLOGY
Inventor： Hideki HOSADA , Tomonari INAMURA , Masaki TAHARA , Tomohiko MORITA , Akira UMISE , Yusuke DOI , Kenji GOTO
Abstract: The present invention provides a superelastic alloy formed by addition of Fe or Co to an Au—Cu—Al alloy, including: Cu of 12.5% by mass or more and 16.5% by mass or less; Al of 3.0% by mass or more and 5.5% by mass or less; Fe or Co of 0.01% by mass or more and 2.0% by mass or less; and a balance Au, and a difference between Al content and Cu content (Cu—Al) is 12% by mass or less. The superelastic alloy according to the present invention has superelastic property while being Ni-free, excellent X-ray imaging property, processability, and strength property, and is suitable for a medical field.
Abstract translation: 本发明提供一种通过在Au-Cu-Al合金中添加Fe或Co形成的超弹性合金，其包括：12.5质量％以上且16.5质量％以下的Cu， Al为3.0质量％以上且5.5质量％以下， Fe或Co为0.01质量％以上且2.0质量％以下， 余量为Au，Al含量与Cu含量之差（Cu-Al）为12质量％以下。 本发明的超弹性合金具有超弹性，无镍，优异的X射线成像性，加工性和强度特性，适用于医疗领域。
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公开(公告)号：US20220213576A1
公开(公告)日：2022-07-07
申请号：US17607397
申请日：2020-09-24
Applicant: TANAKA KIKINZOKU KOGYO K.K. , TOKUSHIMA UNIVERSITY
Inventor： Michimasa OKUBO , Kenji GOTO , Kunihiro TANAKA , Kojiro SHIRAISHI , Kunihiro SHIMA , Yuya KATO , Kenichi HAMADA , Eiichi HONDA , Emi TAKEGAWA
Abstract: The present invention relates to a medical Au—Pt—Pd alloy including Au, Pt, Pd, and inevitable impurities. The alloy has an alloy composition inside a polygon (A1-A2-A3-A4-A5-A6) surrounded by straight lines connected at point A1 (Au: 37.9 atom %, Pt: 0.1 atom %, and Pd: 62 atom %), point A2 (Au: 79.9 atom %, Pt: 0.1 atom %, and Pd: 20 atom %), point A3 (Au: 79.9 atom %, Pt: 20 atom %, and Pd: 0.1 atom %), point A4 (Au: 69.9 atom %, Pt: 30 atom %, and Pd: 0.1 atom %), point A5 (Au: 49 atom %, Pt: 30 atom %, and Pd: 21 atom %), and point A6 (Au: 39 atom %, Pt: 40 atom %, and Pd: 21 atom %) in a Au—Pt—Pd ternary state diagram. The metal structure of the alloy is optimized, and the metal structure is close to a single-phase structure, and has little precipitation of a Au-rich phase and a Pt-rich phase different in composition from a mother phase.
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