JP5748955B2 - 希土類元素を含むニッケル−チタン合金 - Google Patents
希土類元素を含むニッケル−チタン合金 Download PDFInfo
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- 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
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/82—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/86—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure
- A61F2/88—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure the wire-like elements formed as helical or spiral coils
- A61F2/885—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure the wire-like elements formed as helical or spiral coils comprising a coil including a plurality of spiral or helical sections with alternate directions around a central axis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/46—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting
- B21B1/463—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting in a continuous process, i.e. the cast not being cut before rolling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C1/00—Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C23/00—Extruding metal; Impact extrusion
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/023—Alloys based on nickel
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C14/00—Alloys based on titanium
-
- 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
- C22C19/03—Alloys based on nickel or cobalt based on nickel
-
- 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
- C22C19/03—Alloys based on nickel or cobalt based on nickel
- C22C19/05—Alloys based on nickel or cobalt based on nickel with chromium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C30/00—Alloys containing less than 50% by weight of each constituent
-
- 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
-
- 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
- C22F1/16—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of other metals or alloys based thereon
- C22F1/18—High-melting or refractory metals or alloys based thereon
-
- 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
- C22F1/16—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of other metals or alloys based thereon
- C22F1/18—High-melting or refractory metals or alloys based thereon
- C22F1/183—High-melting or refractory metals or alloys based thereon of titanium or alloys based thereon
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2240/00—Manufacturing or designing of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2240/001—Designing or manufacturing processes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2250/00—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2250/0058—Additional features; Implant or prostheses properties not otherwise provided for
- A61F2250/0096—Markers and sensors for detecting a position or changes of a position of an implant, e.g. RF sensors, ultrasound markers
- A61F2250/0098—Markers and sensors for detecting a position or changes of a position of an implant, e.g. RF sensors, ultrasound markers radio-opaque, e.g. radio-opaque markers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/4998—Combined manufacture including applying or shaping of fluent material
- Y10T29/49988—Metal casting
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/4998—Combined manufacture including applying or shaping of fluent material
- Y10T29/49988—Metal casting
- Y10T29/49989—Followed by cutting or removing material
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/4998—Combined manufacture including applying or shaping of fluent material
- Y10T29/49988—Metal casting
- Y10T29/49991—Combined with rolling
Description
本特許文献は、米国特許法第119条(e)項(35 U.S.C.§119(e))に基づき2006年9月6日に出願された米国仮特許出願第60/842,484号、2006年11月29日に出願された米国仮特許出願第60/872,369号、および2006年11月29日に出願された米国仮特許出願第60/872,370号の出願日の恩典を主張し、これらは参照として本明細書に援用される。
以下の明細書および添付の特許請求の範囲において使用される場合、以下の用語は以下の意味を有する。
表1 好ましい合金組成(at.%)
表2 ErおよびCrを含む好ましい合金組成(at.%)
表3 Ni−Ti−RE合金中の代表的な相
表4 線吸収係数計算のパラメーター
Aalloy=pANi+qATi+rARE
上式中
μc alloy
を計算した。種々のX線管電圧および異なる濾過レベルにおけるW/ReアノードのX線強度分布を使用して、フォトンの確率分布を計算した。前述のようにして求めたμalloyの値を特定のエネルギーにおけるそれぞれのフォトンの確率で乗じ、次にそれらの値を全エネルギースペクトルにわたって合計することによって、種々のX線管電圧および異なる濾過レベルにおける累積線吸収係数μc alloyを求めた。得られた値のμc alloyすなわち放射線不透過性を、種々のNi−Ti−RE合金組成物について原子パーセント(at.%)、管電圧、および濾過方式に関して図5〜8にグラフの形態で示している。計算データは、比較のためNi−Ti−Pt、Ni−Ti−Pd、およびNi−Ti−Wの合金についても示している。
真空誘導溶解(VIM)を使用して数種類の希土類ドープニッケル−チタン合金のインゴットを作製した。具体的には、それぞれ7.5at.%の希土類元素を含有するNi−Ti−Er、Ni−Ti−La、Ni−Ti−Gd、およびNi−Ti−Ndを溶解させた。比較のため、Ni−Ti−7.5at.%Ptインゴットおよび二元ニッケル−チタン合金もVIMによって作製した。直径5.72センチメートル(2.25インチ)および高さ7.62センチメートル(3インチ)のインゴットを圧延して板を形成した。それぞれのNi−Ti−X板は、圧延の結果としていくつかの樹枝状晶間亀裂が示されたが、Erドープニッケル−チタン合金が最も圧延に耐えられるように思われた。圧延した板は、850℃で24時間均熱した後、高さが2.54cm(1インチ)をわずかに超える大きさまで熱間加工した。各試験体の組成を重量パーセントの単位で表5に示している。炭素、酸素、および窒素の不純物の濃度も百万分率(ppm)の単位で示している。
表5 Ni−TiおよびNi−Ti−X(X=Er、La、Gd、Nd、またはPt)の試験体の組成データ
表6 鋳造し研磨した試験体のブリネル(Brinell)硬度データ
表7 相対X線コントラスト値(蛍光透視モード)
表8 相対X線コントラスト値(静止モード)
以下の表9に示す組成を有する12のさらなる合金を溶融させる。溶融および鋳造の後、合金は、1000℃で72時間の均一化熱処理を行うことができる。均一化された合金は次に、前述のように試験体に機械加工することができる。
表9 Ni−Ti−ErおよびNi−Tt−Ef−X(X=PdまたはCr)の試験体の組織データ
Claims (15)
- ニッケル−チタン合金であって、
34at.%(原子百分率)〜60at.%の濃度のニッケルと、
34at.%〜60at.%の濃度のチタンと、
2.5at.%〜15at.%の濃度の少なくとも1種類の希土類元素からなり、
前記少なくとも1種類の希土類元素が、La、Pr、Nd、Pm、Sm、Eu、Gd、Tb、Dy、Ho、Er、Tm、Yb、Lu、Ac、Th、Pa、およびUからなる群から選択される、ニッケル−チタン合金を含む少なくとも1つの構成要素を含む医療機器。 - ニッケル−チタン合金であって、
34at.%(原子百分率)〜60at.%の濃度のニッケルと、
34at.%〜60at.%の濃度のチタンと、
2.5at.%〜15at.%の濃度の少なくとも1種類の希土類元素、および濃度が4.9at.%以下のCr、Co、Fe、およびPdからなる群から選択される追加の合金化元素からなり、
前記少なくとも1種類の希土類元素が、La、Pr、Nd、Pm、Sm、Eu、Gd、Tb、Dy、Ho、Er、Tm、Yb、Lu、Ac、Th、Pa、およびUからなる群から選択される、ニッケル−チタン合金を含む少なくとも1つの構成要素を含む医療機器。 - 前記希土類元素の濃度が5at.%〜15at.%である、請求項1または2に記載の医療機器。
- 前記希土類元素の濃度が2.5at.%〜7.5at.%である、請求項1または2に記載の医療機器。
- 45at.%から55at.%の濃度のニッケルと、45at.%から55at.%の濃度のチタンからなる等原子比の二元ニッケル−チタン合金の放射線不透過性よりも高い放射線不透過性を有する、請求項1〜4のいずれか一項に記載の医療機器。
- 15keV〜150keVの範囲内のエネルギーを有する放射線を照射した場合、前記ニッケル−チタン合金の放射線不透過性が、前記等原子比の二元ニッケル−チタン合金の放射線不透過性の1〜8倍の範囲内となる、請求項5に記載の医療機器。
- 40keV〜110keVの範囲内のエネルギーを有する放射線を照射した場合、前記ニッケル−チタン合金のX線コントラストが、前記等原子比の二元ニッケル−チタン合金のX線コントラストの1〜2倍の範囲内となる、請求項1〜6のいずれか一項に記載の医療機器。
- 前記ニッケル−チタン合金が、超弾性であり37℃以下のオーステナイト終了温度を有する、請求項1〜7のいずれか一項に記載の医療機器。
- 体温以下で変形応力を除去した場合に少なくとも0.5%の回復性ひずみを有する、請求項1〜8のいずれか一項に記載の医療機器。
- 前記構成要素がワイヤーおよびカニューレの少なくとも1つである、請求項1〜9のいずれか一項に記載の医療機器。
- 前記回復性ひずみが2%〜10%の範囲内である、請求項9に記載の医療機器。
- 少なくとも1つの構成要素を含む医療機器の製造方法であって、
34at.%〜60at.%のニッケル、34at.%〜60at.%のチタン、並びにLa、Pr、Nd、Pm、Sm、Eu、Gd、Tb、Dy、Ho、Er、Tm、Yb、Lu、Ac、Th、Pa、およびUからなる群から選択される少なくとも1種類の希土類元素の2.5at.%〜15at.%から溶融物を形成するステップと、
前記溶融物を冷却して固体を形成するステップと、
前記固体から構成要素を形成し、それによって前記構成要素を含む医療機器を形成するステップとを含む、方法。 - 少なくとも1つの構成要素を含む医療機器の製造方法であって、
34at.%〜60at.%のニッケル、34at.%〜60at.%のチタン、La、Pr、Nd、Pm、Sm、Eu、Gd、Tb、Dy、Ho、Er、Tm、Yb、Lu、Ac、Th、Pa、およびUからなる群から選択される少なくとも1種類の希土類元素の2.5at.%〜15at.%、並びに濃度が4.9at.%以下のCr、Co、Fe、およびPdから成る群から選択される少なくとも1つの追加の合金化元素から溶融物を形成するステップと、
前記溶融物を冷却して固体を形成するステップと、
前記固体から構成要素を形成し、それによって前記構成要素を含む医療機器を形成するステップとを含む、方法。 - 前記固体から前記構成要素を形成するステップが、
前記固体を第1の形状に熱間加工するステップと、
前記第1の形状を前記構成要素に冷間加工するステップと、
前記構成要素の焼きなましを行うステップとを含み、前記構成要素の焼きなましを行うステップが、前記構成要素を最終形状に束縛し、前記構成要素を350℃〜550℃の範囲内の温度で加熱するステップを含む、請求項12または13に記載の方法。 - 少なくとも1,000℃の温度で前記固体を固溶化熱処理するステップをさらに含む、請求項14に記載の方法。
Applications Claiming Priority (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US84248406P | 2006-09-06 | 2006-09-06 | |
US60/842,484 | 2006-09-06 | ||
US87237006P | 2006-11-29 | 2006-11-29 | |
US87236906P | 2006-11-29 | 2006-11-29 | |
US60/872,369 | 2006-11-29 | ||
US60/872,370 | 2006-11-29 | ||
PCT/US2007/019445 WO2008030517A1 (en) | 2006-09-06 | 2007-09-06 | Nickel-titanium alloy including a rare earth element |
Publications (2)
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JP2010502842A JP2010502842A (ja) | 2010-01-28 |
JP5748955B2 true JP5748955B2 (ja) | 2015-07-15 |
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JP2009527406A Active JP5748955B2 (ja) | 2006-09-06 | 2007-09-06 | 希土類元素を含むニッケル−チタン合金 |
Country Status (9)
Country | Link |
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US (2) | US9103006B2 (ja) |
EP (1) | EP2059619B1 (ja) |
JP (1) | JP5748955B2 (ja) |
AT (1) | ATE488611T1 (ja) |
AU (1) | AU2007293025B2 (ja) |
CA (1) | CA2658580C (ja) |
DE (1) | DE602007010642D1 (ja) |
DK (1) | DK2059619T3 (ja) |
WO (1) | WO2008030517A1 (ja) |
Families Citing this family (29)
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US6569194B1 (en) | 2000-12-28 | 2003-05-27 | Advanced Cardiovascular Systems, Inc. | Thermoelastic and superelastic Ni-Ti-W alloy |
AU2007293025B2 (en) | 2006-09-06 | 2011-06-30 | Cook Medical Technologies Llc | Nickel-titanium alloy including a rare earth element |
US20080166526A1 (en) * | 2007-01-08 | 2008-07-10 | Monk Russell A | Formed panel structure |
US8398789B2 (en) * | 2007-11-30 | 2013-03-19 | Abbott Laboratories | Fatigue-resistant nickel-titanium alloys and medical devices using same |
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US9873933B2 (en) | 2018-01-23 |
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US20080053577A1 (en) | 2008-03-06 |
ATE488611T1 (de) | 2010-12-15 |
WO2008030517A1 (en) | 2008-03-13 |
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US9103006B2 (en) | 2015-08-11 |
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