CN103127558B - For the titanium alloy of enclosed shape intrauterine device - Google Patents
For the titanium alloy of enclosed shape intrauterine device Download PDFInfo
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- CN103127558B CN103127558B CN201310072097.2A CN201310072097A CN103127558B CN 103127558 B CN103127558 B CN 103127558B CN 201310072097 A CN201310072097 A CN 201310072097A CN 103127558 B CN103127558 B CN 103127558B
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- 229910001069 Ti alloy Inorganic materials 0.000 title claims abstract description 77
- 230000000694 effects Effects 0.000 claims description 11
- 239000010955 niobium Substances 0.000 abstract description 9
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 abstract description 5
- 229910052750 molybdenum Inorganic materials 0.000 abstract description 5
- 239000011733 molybdenum Substances 0.000 abstract description 5
- 229910052758 niobium Inorganic materials 0.000 abstract description 5
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 abstract description 5
- 229910052715 tantalum Inorganic materials 0.000 abstract description 5
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 abstract description 5
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 abstract description 5
- 229910052721 tungsten Inorganic materials 0.000 abstract description 5
- 239000010937 tungsten Substances 0.000 abstract description 5
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 abstract description 4
- 229910052735 hafnium Inorganic materials 0.000 abstract description 4
- VBJZVLUMGGDVMO-UHFFFAOYSA-N hafnium atom Chemical compound [Hf] VBJZVLUMGGDVMO-UHFFFAOYSA-N 0.000 abstract description 4
- 230000007935 neutral effect Effects 0.000 abstract description 4
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 abstract 1
- 229910052726 zirconium Inorganic materials 0.000 abstract 1
- 229910045601 alloy Inorganic materials 0.000 description 15
- 239000000956 alloy Substances 0.000 description 15
- 229910000831 Steel Inorganic materials 0.000 description 12
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Substances [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 12
- 239000010959 steel Substances 0.000 description 12
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 11
- 230000007797 corrosion Effects 0.000 description 8
- 238000005260 corrosion Methods 0.000 description 8
- 239000010931 gold Substances 0.000 description 6
- 229910001040 Beta-titanium Inorganic materials 0.000 description 5
- 229910001128 Sn alloy Inorganic materials 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 229910003192 Nb–Ta Inorganic materials 0.000 description 4
- 239000003433 contraceptive agent Substances 0.000 description 4
- 230000002254 contraceptive effect Effects 0.000 description 4
- 229910052763 palladium Inorganic materials 0.000 description 4
- 229910052697 platinum Inorganic materials 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 229910001257 Nb alloy Inorganic materials 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 229910001093 Zr alloy Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 3
- 229910052737 gold Inorganic materials 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- VSZWPYCFIRKVQL-UHFFFAOYSA-N selanylidenegallium;selenium Chemical compound [Se].[Se]=[Ga].[Se]=[Ga] VSZWPYCFIRKVQL-UHFFFAOYSA-N 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- 239000010936 titanium Substances 0.000 description 3
- 229910001182 Mo alloy Inorganic materials 0.000 description 2
- 229910020018 Nb Zr Inorganic materials 0.000 description 2
- 229910020010 Nb—Si Inorganic materials 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 230000000153 supplemental effect Effects 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 231100000701 toxic element Toxicity 0.000 description 2
- JPVYNHNXODAKFH-UHFFFAOYSA-N Cu2+ Chemical compound [Cu+2] JPVYNHNXODAKFH-UHFFFAOYSA-N 0.000 description 1
- 229910001029 Hf alloy Inorganic materials 0.000 description 1
- 229910017339 Mo—Sn Inorganic materials 0.000 description 1
- 229910001252 Pd alloy Inorganic materials 0.000 description 1
- 229910001362 Ta alloys Inorganic materials 0.000 description 1
- 229910011214 Ti—Mo Inorganic materials 0.000 description 1
- 229910007735 Zr—Si Inorganic materials 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052790 beryllium Inorganic materials 0.000 description 1
- ATBAMAFKBVZNFJ-UHFFFAOYSA-N beryllium atom Chemical compound [Be] ATBAMAFKBVZNFJ-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 229910001431 copper ion Inorganic materials 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 231100000053 low toxicity Toxicity 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 230000001151 other effect Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- GPPXJZIENCGNKB-UHFFFAOYSA-N vanadium Chemical compound [V]#[V] GPPXJZIENCGNKB-UHFFFAOYSA-N 0.000 description 1
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- Materials For Medical Uses (AREA)
Abstract
For a titanium alloy for enclosed shape intrauterine device, expression formula is Ti-X or Ti-X-Y, wherein: X is one or more of following isomorphism beta stable element: molybdenum, niobium, tantalum, tungsten; X accounts for 0.001% ~ 70% of gross weight; Y is one or more of following neutral element: stannum, zirconium, hafnium; Y accounts for 0.001% ~ 30% of gross weight.Titanium alloy of the present invention makes titanium alloy wire for making the support of intrauterine device.
Description
Technical field
The present invention relates to a kind of women's assembly of intra-uterine contraceptive apparatus, particularly a kind of titanium alloy for enclosed shape intrauterine device.
Background technology
Intrauterine device (being called for short " birth control apparatus ") is the contraceptive device being placed on womb intracavity, and being a kind of reversible, long-acting contraceptive device, is the widely used contraceptive devices of current China women of child-bearing age.
Enclosed shape intrauterine device is Chinese the most frequently used intrauterine device, mainly contain uterine cavity shaped (GB11234 " palace chamber type intrauterine device ") and O shape (GB3156 " O shape intrauterine device "), the support of enclosed shape intrauterine device is the closing structure that rustless steel spiral spring is combined to form, and the rustless steel trade mark is 0Cr18Ni9 and 1Cr18Ni9Ti.
There is following problem in rustless steel spiral spring bracket:
One, rustless steel is containing a certain amount of toxic element, and as 06Cr19Ni10 (being called 0Cr18Ni9 in the past in 2007), it contains the Mn element of the Cr element of 18wt% ~ 20wt% and the Ni element of 8wt% ~ 11wt% and about 2%.
Two, rustless steel spiral spring bracket weight is comparatively large, and different according to product specification, weight is at 400mg ~ 600mg.
Three, rustless steel poor corrosion resistance strong man meaning, for conventional 06Cr19Ni10, its pitting potential E
bbe generally 400mV ~ 600mV, good 316 rustless steels of corrosion resistance also only can reach 800mV.
Summary of the invention
The object of the invention is to provide a kind of titanium alloy for enclosed shape intrauterine device, to improve Problems existing in known technology.
For achieving the above object, titanium alloy for enclosed shape intrauterine device provided by the invention, expression formula is Ti-X, wherein: X is one or more of following isomorphism beta stable element: molybdenum (Mo), niobium (Nb), tantalum (Ta), tungsten (W); X accounts for 0.001% ~ 70% of gross weight.
Titanium alloy for enclosed shape intrauterine device provided by the invention can also be Ti-X-Y, wherein:
X is one or more of following isomorphism beta stable element: molybdenum (Mo), niobium (Nb), tantalum (Ta), tungsten (W); X accounts for 0.001% ~ 70% of gross weight;
Y is one or more of following neutral element: stannum (Sn), zirconium (Zr), hafnium (Hf), Y accounts for 0.001% ~ 50% of gross weight.
Described titanium alloy, wherein, also containing one or more in silicon (Si), palladium (Pt), platinum (Au), gold in titanium alloy, accounts for 0.001% ~ 30% of gross weight.
Described titanium alloy wire, wherein, expression formula is Ti-29Nb-13Ta.
Described titanium alloy, wherein, expression formula is Ti-15Sn-4Nb-2Ta.
Described titanium alloy wire, wherein, expression formula is Ti-15Zr-4Nb-4Ta.
Titanium alloy of the present invention makes titanium alloy wire for making the support of intrauterine device, and this support is spiral spring structure.
Described support, wherein, titanium alloy wire is the round silk of diameter 0.3mm ~ 0.5mm, or the shaped filaments be equal to this circle silk sectional area.
Described support, wherein, titanium alloy wire is the round silk of diameter 0.35mm ~ 0.4mm, or the shaped filaments be equal to this circle silk sectional area.
Effect of the present invention is as follows:
One, composition
Titanium alloy is divided into alpha titanium alloy (TA), beta-titanium alloy (TB) and alpha+beta titanium alloys (TC).Alpha titanium alloy is structure of hexagonal crystal, and tensile strength is too low, and namely less pulling force is out of shape, and alpha titanium alloy is not by heat treatment reinforcement, therefore alpha titanium alloy is not suitable as the timbering material of intrauterine device.And beta-titanium alloy, metastable state beta-titanium alloy and alpha+beta titanium alloys contain certain β phase, by heat treatment reinforcement to improve its tensile strength, non-deformability is better, can as the timbering material of intrauterine device.Therefore titanium alloy of the present invention contains a certain amount of beta stable element.In beta stable element, nontoxic or low toxicity has niobium (Nb), molybdenum (Mo), tantalum (Ta), tungsten (W).
The stannum (Sn) of neutral element, zirconium (Zr), hafnium (Hf) and silicon (Si), palladium (Pd), platinum (Pt), gold (Au) etc. can form continuous solid solution with titanium (Ti) or compound plays invigoration effect to titanium alloy, in order to improve Mechanical Properties of Titanium Alloy, can add in right amount; Palladium (Pd), platinum (Pt) also can further improve the corrosion resistance of titanium alloy, can add in right amount when the service life of intrauterine device design is longer.
Two, weight
During camber of spring, the size of restoring force is directly proportional to the cube of string diameter, is directly proportional to shear modulus, due to the mistaken ideas in understanding, conventional products generally defines the index-hardness of mistake, as GB11234 " palace chamber type intrauterine device ", GB3156 " O shape intrauterine device ".But stainless shear modulus is generally at about 80GPa, and the shear modulus of titanium alloy is generally less than about 45GPa, and (monocrystalline titanium shear modulus can be higher, but be difficult to realize; Add aluminum, vanadium or beryllium etc. and can improve shear modulus, but these are toxic element).
In order to reach the elastic force be equal to rustless steel spiral spring, invention increases the string diameter of titanium alloy, because the density of titanium alloy is less, the weight of the titanium alloy spiral spring bracket in size range of the present invention is not higher than the rustless steel spiral spring bracket of 0.3mm, and the weight of preferable range 0.35mm-0.40mm titanium alloy spiral spring bracket is only about 80% of the rustless steel spiral spring bracket of 0.3mm.
Three, corrosion resistance
The high corrosion resistance of titanium alloy, pitting potential E
bbe generally and be greater than 1400mV, and Ti-15Sn-4Nb-2Ta and Ti-15Zr-4Nb-4Ta even can reach 3000mV, far away higher than rustless steel.
Four, other effects
The present invention also has following unexpected effect while solving the problems of the technologies described above, intrauterine device mainly adopts copper to practise contraception, galvanic corrosion can be there is (under the corrosion system of titanium alloy and copper in dissimilar metal contact, under steady statue, copper is anode), galvanic corrosion degree and two kinds of metallic surfaces amass and are proportionate, the increase of string diameter reduces the surface area (can be calculated by mathematical formulae) of spiral spring bracket on the contrary, reduces galvanic effect.The release of copper ion is more stable compared with the intrauterine device of rustless steel spiral spring bracket.
Detailed description of the invention
The titanium alloy main constituent that the present invention adopts known method to make is Ti-X or Ti-X-Y, wherein:
X is one or more of following isomorphism beta stable element: niobium (Nb), molybdenum (Mo), tantalum (Ta), tungsten (W);
Y is one or more of following neutral element: stannum (Sn), zirconium (Zr), hafnium (Hf).
Titanium alloy can also contain silicon (Si), palladium (Pd), platinum (Pt), gold (Au) one or more.
Metal has following three kinds of situations as support in intrauterine device:
1) be the spiral spring bracket of independent support effect;
2) the spiral spring bracket of supplemental support effect is played;
3) planar bracket of independent support effect is played.
If the support of intrauterine device has been the spiral spring of independent support effect, this kind of supporting structure is generally the closed forms such as palace shape (as the palace shape of routine and derivative first palace shape by palace shape, palace T-shaped), O shape, and the support force of support and recoverable force ability are primary Consideration.The support force of support and the elastic force of spring are proportionate, and the shear modulus of the elastic force of spring and silk material is proportionate G (because shear modulus G and elastic modulus E have the conversion relation of G=E/2 (1+u), u is Poisson's ratio, is alternatively proportionate with elastic modelling quantity) and the cube of radius be proportionate.Recoverable force ability and tensile strength are proportionate.Ti-15Zr-4Nb-4Ta and Ti-15Sn-4Nb-2Ta that elastic modelling quantity is higher is that preferably titanium alloy is the round silk of 0.3mm-0.5mm, or the shaped filaments be equal to this circle silk sectional area.
If the support of intrauterine device has been the spiral spring of supplemental support effect, this kind of supporting structure has been generally the open form such as Y shape, V-arrangement, γ shape, and the recoverable force ability of support is primary Consideration, and now lower elastic modelling quantity also can be accepted.Titanium alloy component can be any one of the scope of the invention, and shape is the round silk of 0.1mm-0.5mm, or the shaped filaments be equal to this circle silk sectional area.
If the support of intrauterine device has been the plane of independent support effect, this kind of supporting structure is generally the open form such as Y shape, V-arrangement, γ shape, because elastic force is relevant with structural design, lower elastic modelling quantity also can obtain higher elastic force by profile design, therefore the recoverable force ability of support is primary Consideration, now lower elastic modelling quantity also can be accepted.Titanium alloy component can be any one of the scope of the invention, and shape is the round silk of 0.3mm-0.5mm, or the shaped filaments be equal to this circle silk sectional area.
Embodiment 1
Titanium alloy spiral spring is adopted to make the enclosed shape intrauterine device such as uterine cavity shaped (also comprising first palace shape, palace T-shaped) or O shape.
Titanium alloy is Ti-Zr-Nb-Ta alloy, and its composition franchise is with reference to JIST7401-4.In order to improve mechanical performance, fill perhaps containing the oxygen (O) accounting for gross weight 0.10%-0.5%, and the nitrogen of 0.02%-0.2% (N).Titanium alloy is the round silk of 0.35mm-0.40mm, or the shaped filaments be equal to this circle silk sectional area.
Embodiment 2
Titanium alloy spiral spring is adopted to make the enclosed shape intrauterine device such as uterine cavity shaped (also comprising first palace shape, palace T-shaped) or O shape.
Titanium alloy is Ti-15Sn-4Nb-4Ta.In order to improve mechanical performance, fill perhaps containing the oxygen (O) accounting for gross weight 0.10%-0.5%, and the nitrogen of 0.02%-0.2% (N).Titanium alloy is the round silk of 0.35mm-0.40mm, or the shaped filaments be equal to this circle silk sectional area.
Except the titanium alloy for enclosed shape intrauterine device that above-mentioned two embodiments provide, according to the composition expression formula of titanium alloy of the present invention can also be but be not limited to following kind:
Titanium alloy is Ti-Nb alloy, such as:
Ti-15Nb、Ti-16Nb、Ti-21.6Nb、Ti-22Nb、Ti-24Nb、Ti-25Nb、Ti-26Nb、Ti-26.5Nb、Ti-29Nb、Ti-30Nb、Ti-35Nb。
Titanium alloy is Ti-Nb-Ta alloy, such as:
Ti-22Nb-2Ta、Ti-22Nb-4Ta、Ti-22Nb-6Ta、Ti-22Nb-8Ta、Ti-29Nb-13Ta。
Titanium alloy is Ti-Nb-Ta-Zr alloy, such as:
Ti-23Nb-0.7Ta-2Zr、Ti-24.1Nb-19.9Ta-4.6Zr、Ti-25Nb-10Ta-5Zr、Ti-29Nb-13Ta-4.6Zr、Ti-29.4Nb-10.2Ta-7.1Zr、Ti-30Nb-10Ta-5Zr、Ti-34.2Nb-5.9Ta-8.5Zr、Ti-34.4Nb-5.6Ta-8.4Zr、Ti-35Nb-2Ta-3Zr、Ti-35Nb-5Ta-7Zr、Ti-35Nb-10Ta-5Zr、Ti-35.3Nb-5.1Ta-7.1Zr。
Titanium alloy is Ti-Nb-Ta-Mo alloy, such as:
Ti-29Nb-13Ta-4Mo。
Titanium alloy is Ti-Nb-Ta-Sn alloy, such as:
Ti-29Nb-13Ta-2Sn、Ti-29Nb-13Ta-4.6Sn、Ti-29Nb-13Ta-6Sn。
Titanium alloy is Ti-Nb-Zr alloy, such as:
Ti-13Nb-13Zr、Ti-20Nb-13Zr、Ti-20Nb-20Zr、Ti-22Nb-2Zr、Ti-22Nb-4Zr、Ti-22Nb-6Zr。
Titanium alloy is Ti-Nb-Zr-Sn alloy, such as:
Ti-24Nb-4Zr-7.9Sn。
Titanium alloy is Ti-Nb-Hf alloy, such as:
Ti-16Nb-10Hf、Ti-16Nb-9.5Hf、Ti-22Nb-2Hf、Ti-22Nb-4Hf、Ti-22Nb-6Hf。
Titanium alloy is Ti-Nb-Mo alloy, such as:
Ti-15Nb-4Mo、Ti-18Nb-3Mo、Ti-21Nb-2Mo、Ti-24Nb-1Mo。
Titanium alloy is Ti-Nb-Si alloy, such as:
Ti-26Nb-0.5Si、Ti-26Nb-1.0Si、Ti-26Nb-1.5Si、Ti-27.4Nb-1.0Si。
Titanium alloy is Ti-Nb-Sn alloy, such as:
Ti-16Nb-4Sn、Ti-16Nb-4.9Sn、Ti-35Nb-4Sn。
Titanium alloy is Ti-Nb-Pd alloy, such as:
Ti-30Nb-3Pd。
Titanium alloy is Ti-Mo alloy, such as:
Ti-5Mo、Ti-6Mo、Ti-7.5Mo、Ti-15Mo。
Titanium alloy is Ti-Mo-Nb alloy, such as:
Ti-15Mo-3Nb。
Titanium alloy is Ti-Mo-Nb-Zr alloy, such as:
Ti-15Mo-3Nb。
Titanium alloy is Ti-Mo-Nb-Si alloy, such as:
Ti-15Mo-2.5Nb-0.2Si。
Titanium alloy is Ti-Mo-Zr alloy, such as:
Ti-4Mo-4.8Zr。
Titanium alloy is Ti-Mo-Zr-Sn alloy, such as:
Ti-11.5Mo-6Zr-4.3Sn、Ti-11.5Mo-6Zr-4.5Sn。
Titanium alloy is Ti-Mo-Sn alloy, such as:
Ti-5Mo-2Sn、Ti-5Mo-3Sn、Ti-5Mo-5Sn、Ti-6Mo-4Sn。
Titanium alloy is Ti-Ta alloy, such as:
Ti-30Ta、Ti-40Ta、Ti-50Ta、Ti-70Ta。
Titanium alloy is Ti-Ta-Zr alloy, such as:
Ti-50Ta-10Zr。
Titanium alloy is Ti-Ta-Sn alloy, such as:
Ti-40Ta-4Sn、Ti-40Ta-8Sn、Ti-40Ta-12Sn、Ti-50Ta-4Sn、Ti-50Ta-8Sn。
Titanium alloy is Ti-Zr-Nb alloy, such as:
Ti-17Zr-18Nb。
Titanium alloy is Ti-Zr-Si alloy, such as:
Ti-11Zr-0.15Si。
Titanium alloy is Ti-Zr-Nb-Ta alloy, such as:
Ti-15Zr-4Nb-4Ta。
Titanium alloy is Ti-Sn-Nb-Ta, such as:
Ti-15Sn-4Nb-4Ta。
Claims (1)
1. the support for enclosed shape intrauterine device, this support has been the spiral spring bracket of independent support effect, employing titanium alloy wire is made, described titanium alloy is Ti-15Sn-4Nb-2Ta or Ti-15Zr-4Nb-4Ta, titanium alloy wire is the round silk of diameter 0.3mm ~ 0.5mm, or the shaped filaments be equal to this circle silk sectional area.
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| CN112342433B (en) * | 2020-09-29 | 2021-12-21 | 中国科学院金属研究所 | High-thermal-stability equiaxial nanocrystalline Ti-Zr-W alloy and preparation method thereof |
| CN114657416B (en) * | 2022-04-06 | 2023-03-21 | 西北有色金属研究院 | Low-temperature high-strength titanium alloy with excellent welding performance |
| CN115627384B (en) * | 2022-10-14 | 2024-05-07 | 东莞理工学院 | Titanium alloy chip bracket with thermal shrinkage and cold expansion characteristics and preparation method thereof |
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| CN1648268A (en) * | 2003-12-25 | 2005-08-03 | 中国科学院金属研究所 | Super elasticity low modulus titanium alloy and preparing and processing method |
| CN201481630U (en) * | 2009-06-09 | 2010-05-26 | 王常春 | Uterine cavity shaped intrauterine contraceptive device with memory function |
| CN102355872A (en) * | 2009-01-18 | 2012-02-15 | 欧克尼医疗有限公司 | Novel intra uterine device |
| CN102908223A (en) * | 2011-08-03 | 2013-02-06 | 辽宁爱母医疗科技有限公司 | Bracket for intrauterine contraceptive device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20010041900A1 (en) * | 1999-12-21 | 2001-11-15 | Ovion, Inc. | Occluding device and method of use |
| US20040020494A1 (en) * | 2002-07-31 | 2004-02-05 | Burpee Janet Walsh | Contraceptive diaphragm with a superelastic member |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1648268A (en) * | 2003-12-25 | 2005-08-03 | 中国科学院金属研究所 | Super elasticity low modulus titanium alloy and preparing and processing method |
| CN102355872A (en) * | 2009-01-18 | 2012-02-15 | 欧克尼医疗有限公司 | Novel intra uterine device |
| CN201481630U (en) * | 2009-06-09 | 2010-05-26 | 王常春 | Uterine cavity shaped intrauterine contraceptive device with memory function |
| CN102908223A (en) * | 2011-08-03 | 2013-02-06 | 辽宁爱母医疗科技有限公司 | Bracket for intrauterine contraceptive device |
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