JP5732468B2 - 耐疲労性の向上したニチノール器具 - Google Patents
耐疲労性の向上したニチノール器具 Download PDFInfo
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- JP5732468B2 JP5732468B2 JP2012539995A JP2012539995A JP5732468B2 JP 5732468 B2 JP5732468 B2 JP 5732468B2 JP 2012539995 A JP2012539995 A JP 2012539995A JP 2012539995 A JP2012539995 A JP 2012539995A JP 5732468 B2 JP5732468 B2 JP 5732468B2
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- nickel
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K5/00—Making tools or tool parts, e.g. pliers
- B21K5/02—Making tools or tool parts, e.g. pliers drilling-tools or other for making or working on holes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C5/00—Filling or capping teeth
- A61C5/40—Implements for surgical treatment of the roots or nerves of the teeth; Nerve needles; Methods or instruments for medication of the roots
- A61C5/42—Files for root canals; Handgrips or guiding means therefor
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0068—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for particular articles not mentioned below
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
- C21D9/54—Furnaces for treating strips or wire
- C21D9/56—Continuous furnaces for strip or wire
-
- 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
- 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
- C22F1/006—Resulting in heat recoverable alloys with a memory effect
-
- 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
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C2201/00—Material properties
- A61C2201/007—Material properties using shape memory effect
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D2201/00—Treatment for obtaining particular effects
- C21D2201/01—Shape memory effect
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/001—Austenite
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/008—Martensite
-
- 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
- Y10T29/49567—Dental appliance making
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Neurosurgery (AREA)
- Epidemiology (AREA)
- Biomedical Technology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Surgery (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Dentistry (AREA)
- Neurology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
Description
本願は、米国仮出願第61/262,008号(2009年11月17日提出)に基づき優先権を主張する。
Claims (14)
- ニッケル−チタン合金から成り、人体に用いるように構成された作業部を備え、
前記作業部は、オーステナイト終了温度が40〜60℃であり、変形単斜晶マルテンサイト状態にあり、90°の角度に曲げてから解放した後の形状記憶が60〜75%であり、
前記オーステナイト終了温度、前記変形単斜晶マルテンサイト状態及び前記形状記憶は、機械加工前に前記ニッケル−チタン合金を一定歪み下に置いて行われる前記作業部の最終熱処理と、機械加工後に行われる前記作業部の仕上げ器具熱処理とによってもたらされる歯内治療器具。 - 機械加工前に前記ニッケル−チタン合金を一定歪み下に置いて行われる前記作業部の最終熱処理は、約410〜440℃で実施される請求項1に記載の歯内治療器具。
- 前記一定歪みは、3〜15kgの荷重によってもたらされる請求項1に記載の歯内治療器具。
- 前記形状記憶は、形状記憶を得るための熱サイクルを前記ニッケル−チタン合金に施すことなく得られる請求項1に記載の歯内治療器具。
- 前記形状記憶は、冷間加工の後、前記ニッケル−チタン合金に一定歪みをかけつつ熱サイクルを施すことなく得られる請求項1に記載の歯内治療器具。
- 疲労寿命の長い歯内治療器具用ワイヤーであって、
組成が約50±10重量%のニッケル(Ni)と、残部としてチタン(Ti)及び約1重量%の微量元素とであるニッケル−チタン合金材料を含み、
仕上げ状態にあるとき変形単斜晶マルテンサイト状態であり、 前記ニッケル−チタン合金材料の冷間加工と、前記冷間加工後のニッケル−チタン合金を一定歪み下に置いて行われる最終熱処理と、仕上げ状態にあるときの前記ニッケル−チタン合金の熱処理とによりもたらされる、90°の角度に曲げてから解放した後の形状記憶が60〜75%であり、オーステナイト終了温度が40〜60℃である疲労寿命の長い歯内治療器具用ワイヤー。 - 前記疲労寿命の長い歯内治療器具用ワイヤーは、約410〜440℃の前記最終熱処理を施され、
前記疲労寿命の長い歯内治療器具用ワイヤーの冷間加工と前記最終熱処理との間に中間加工ステップを行わない請求項6に記載の疲労寿命の長い歯内治療器具用ワイヤー。 - 前記一定歪みは、3〜15kgの荷重によってもたらされる請求項6に記載の疲労寿命の長い歯内治療器具用ワイヤー。
- 前記疲労寿命の長い歯内治療器具用ワイヤーの前記ニッケル含有量は、54.3〜57.3重量%である請求項7に記載の疲労寿命の長い歯内治療器具用ワイヤー。
- 前記疲労寿命の長い歯内治療器具用ワイヤーは、機械加工作業の前に、約35〜45%の最終直径に最終冷間加工され、前記最終冷間加工は前記最終熱処理の前に行うことを更に含む請求項7に記載の疲労寿命の長い歯内治療器具用ワイヤー。
- 向上した疲労破壊特性を得るように、ニッケル−チタンブランクから歯内治療器具を製造する方法であって、
(i) 約410〜440℃で、可逆的な限界内の歪みの下、前記ブランクを伸び歪み変形させるステップと、
(ii) 前記ステップ(i)の後、機械加工作業を行って前記ニッケル−チタンブランクから器具を作製するステップと、
(iii) 前記ステップ(ii)の後、前記器具を熱処理するステップと、を含み、
前記ステップ(iii)の熱処理後の前記器具は、90°の角度に曲げてから解放した後の形状記憶が60〜75%である方法。 - 前記伸び歪み変形は、3〜15kgの荷重によってもたらされる歪みに由来するものである請求項11に記載の方法。
- 前記ステップ(iii)の熱処理後の前記器具が、前記ステップ(i)後の前記ニッケル−チタンブランクと疲労特性が少なくとも実質的に同一である請求項11に記載の方法。
- 前記ステップ(iii)の熱処理後の前記器具が、前記ステップ(i)後の前記ニッケル−チタンブランクと形状記憶が少なくとも実質的に同一である請求項11に記載の方法。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US26200809P | 2009-11-17 | 2009-11-17 | |
US61/262,008 | 2009-11-17 | ||
PCT/US2010/056999 WO2011062970A1 (en) | 2009-11-17 | 2010-11-17 | Improved fatigue-resistant nitinol instrument |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2015081788A Division JP2015164539A (ja) | 2009-11-17 | 2015-04-13 | 耐疲労性の向上したニチノール器具及びその製造方法 |
Publications (3)
Publication Number | Publication Date |
---|---|
JP2013511338A JP2013511338A (ja) | 2013-04-04 |
JP2013511338A5 JP2013511338A5 (ja) | 2014-01-09 |
JP5732468B2 true JP5732468B2 (ja) | 2015-06-10 |
Family
ID=44059958
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
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JP2012539995A Expired - Fee Related JP5732468B2 (ja) | 2009-11-17 | 2010-11-17 | 耐疲労性の向上したニチノール器具 |
JP2015081788A Pending JP2015164539A (ja) | 2009-11-17 | 2015-04-13 | 耐疲労性の向上したニチノール器具及びその製造方法 |
Family Applications After (1)
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JP2015081788A Pending JP2015164539A (ja) | 2009-11-17 | 2015-04-13 | 耐疲労性の向上したニチノール器具及びその製造方法 |
Country Status (4)
Country | Link |
---|---|
US (2) | US8714976B2 (ja) |
EP (1) | EP2501829B1 (ja) |
JP (2) | JP5732468B2 (ja) |
WO (1) | WO2011062970A1 (ja) |
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US8714976B2 (en) * | 2009-11-17 | 2014-05-06 | William B. Johnson | Fatigue-resistant Nitinol instrument |
US10196713B2 (en) * | 2009-11-20 | 2019-02-05 | Dentsply Sirona Inc. | Medical instrument with modified memory and flexibility properties and method |
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CA2800307C (en) * | 2010-05-10 | 2016-11-15 | Dentsply International Inc. | Endodontic rotary instruments made of shape memory alloys in their martensitic state and manufacturing methods thereof |
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US8715315B1 (en) | 2013-03-15 | 2014-05-06 | Insera Therapeutics, Inc. | Vascular treatment systems |
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US8679150B1 (en) | 2013-03-15 | 2014-03-25 | Insera Therapeutics, Inc. | Shape-set textile structure based mechanical thrombectomy methods |
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-
2010
- 2010-11-17 US US13/510,500 patent/US8714976B2/en not_active Expired - Fee Related
- 2010-11-17 WO PCT/US2010/056999 patent/WO2011062970A1/en active Application Filing
- 2010-11-17 EP EP10832092.0A patent/EP2501829B1/en active Active
- 2010-11-17 JP JP2012539995A patent/JP5732468B2/ja not_active Expired - Fee Related
-
2014
- 2014-05-05 US US14/269,968 patent/US9878366B2/en active Active
-
2015
- 2015-04-13 JP JP2015081788A patent/JP2015164539A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
JP2015164539A (ja) | 2015-09-17 |
JP2013511338A (ja) | 2013-04-04 |
EP2501829A4 (en) | 2017-04-26 |
US9878366B2 (en) | 2018-01-30 |
US20120231414A1 (en) | 2012-09-13 |
EP2501829B1 (en) | 2018-06-20 |
WO2011062970A1 (en) | 2011-05-26 |
EP2501829A1 (en) | 2012-09-26 |
US20140242543A1 (en) | 2014-08-28 |
US8714976B2 (en) | 2014-05-06 |
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