CN103127558A - Titanium alloy for enclosed intrauterine device - Google Patents
Titanium alloy for enclosed intrauterine device Download PDFInfo
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- CN103127558A CN103127558A CN2013100720972A CN201310072097A CN103127558A CN 103127558 A CN103127558 A CN 103127558A CN 2013100720972 A CN2013100720972 A CN 2013100720972A CN 201310072097 A CN201310072097 A CN 201310072097A CN 103127558 A CN103127558 A CN 103127558A
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- 229910001069 Ti alloy Inorganic materials 0.000 title claims abstract description 86
- 239000010955 niobium Substances 0.000 claims abstract description 11
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract description 7
- 239000011733 molybdenum Substances 0.000 claims abstract description 7
- 229910052758 niobium Inorganic materials 0.000 claims abstract description 7
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910052715 tantalum Inorganic materials 0.000 claims abstract description 7
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 claims abstract description 7
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910052721 tungsten Inorganic materials 0.000 claims abstract description 7
- 239000010937 tungsten Substances 0.000 claims abstract description 7
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229910052735 hafnium Inorganic materials 0.000 claims abstract description 5
- VBJZVLUMGGDVMO-UHFFFAOYSA-N hafnium atom Chemical compound [Hf] VBJZVLUMGGDVMO-UHFFFAOYSA-N 0.000 claims abstract description 5
- 230000007935 neutral effect Effects 0.000 claims abstract description 5
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims abstract 2
- 229910052726 zirconium Inorganic materials 0.000 claims abstract 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 14
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 claims description 13
- 239000010931 gold Substances 0.000 claims description 7
- 229910052763 palladium Inorganic materials 0.000 claims description 5
- 229910052697 platinum Inorganic materials 0.000 claims description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 4
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 4
- 229910052737 gold Inorganic materials 0.000 claims description 4
- 229910052710 silicon Inorganic materials 0.000 claims description 4
- 239000010703 silicon Substances 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 229910052718 tin 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
- 239000010959 steel Substances 0.000 description 12
- 230000000694 effects Effects 0.000 description 10
- 230000007797 corrosion Effects 0.000 description 8
- 238000005260 corrosion Methods 0.000 description 8
- 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
- 238000011084 recovery Methods 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
- 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
- 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
- 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
- 231100000614 poison Toxicity 0.000 description 2
- 230000007096 poisonous effect Effects 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
- 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
- 229910052748 manganese Inorganic materials 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
- 238000007789 sealing Methods 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 210000004291 uterus Anatomy 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
Abstract
The invention relates to a titanium alloy for an enclosed intrauterine device. The titanium alloy has an expression formula of Ti-X or Ti-X-Y, wherein X is one or more of the following isomorphic beta stable elements: molybdenum, niobium, tantalum and tungsten; X accounts for 0.001-70 percent of the total weight; Y is one or more of the following neutral elements, namely, tin, zirconium and hafnium; and Y accounts for 0.001-30 percent of total weight. The titanium alloy disclosed by the invention can be prepared into a titanium alloy wire which is used for manufacturing a stent of the intrauterine device.
Description
Technical field
The present invention relates to a kind of women assembly of intra-uterine contraceptive apparatus, particularly a kind of titanium alloy for the enclosed shape intrauterine device.
Background technology
Intrauterine device (being called for short " birth control apparatus ") is the contraceptive device that is placed in women's cavity of uterus, is a kind of reversible, long-acting contraceptive device, is the widely used contraceptive devices of present China women of child-bearing age.
The enclosed shape intrauterine device is the most frequently used intrauterine device of China, 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 contains a certain amount of poisonous element, and as 06Cr19Ni10 (2007 be called in the past 0Cr18Ni9), it contains the Ni element of the Cr element of 18wt%～20wt% and 8wt%～11wt% and about 2% Mn element.
Two, rustless steel spiral spring bracket weight is larger, and different according to product specification, weight is at 400mg～600mg.
Three, rustless steel poor corrosion resistance strong man meaning, take 06Cr19Ni10 commonly used as example, its pitting potential E
bBe generally 400mV～600mV, corrosion resistance 316 rustless steels preferably also only can reach 800mV.
Summary of the invention
The object of the invention is to provide a kind of titanium alloy for the enclosed shape intrauterine device, to improve the problem that exists in known technology.
For achieving the above object, titanium alloy for the enclosed shape intrauterine device provided by the invention, expression formula is Ti-X, and 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 the 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 contains one or more in silicon (Si), palladium (Pt), platinum (Au), gold in titanium alloy, account 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 is made the support that titanium alloy wire is used for making intrauterine device, and this support is the spiral spring structure.
Described support, wherein, titanium alloy wire is the circle silk of diameter 0.3mm～0.5mm, or the shaped filaments that is equal to this circle sectional area.
Described support, wherein, titanium alloy wire is the circle silk of diameter 0.35mm～0.4mm, or the shaped filaments that is equal to this circle 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 less pulling force namely is out of shape, and alpha titanium alloy can not pass through 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, can be by heat treatment reinforcement to improve its tensile strength, and non-deformability is better, can be used 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 of neutral element (Sn), 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, and the service life that designs at intrauterine device can add in right amount than long time.
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 on understanding, conventional products has generally been stipulated wrong index-hardness, as GB11234 " palace chamber type intrauterine device ", GB3156 " O shape intrauterine device ".But generally in the 80GPa left and right, (monocrystalline titanium shear modulus can be higher, but be difficult to realize and the shear modulus of titanium alloy is generally less than about 45GPa for stainless shear modulus; Add aluminum, vanadium or beryllium etc. and can improve shear modulus, but these are poisonous element).
In order to reach the elastic force that is equal to rustless steel spiral spring, the present invention has improved the string diameter of titanium alloy, because the density of titanium alloy is less, higher than the rustless steel spiral spring bracket of 0.3mm, the weight of preferable range 0.35mm-0.40mm titanium alloy spiral spring bracket is not only Shang Xia 80% of rustless steel spiral spring bracket of 0.3mm to the weight of the titanium alloy spiral spring bracket in size range of the present invention.
Three, corrosion resistance
The high corrosion resistance of titanium alloy, pitting potential E
bBe generally 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 when solving the problems of the technologies described above, intrauterine device mainly adopts the copper contraception, the dissimilar metal contact can exist galvanic corrosion (under titanium alloy and copper corrosion system, under steady statue, copper is anode), galvanic corrosion degree and two kinds of long-pending being proportionate of metallic surface, the increase of string diameter has reduced the surface area (can be calculated by mathematical formulae) of spiral spring bracket on the contrary, has reduced galvanic effect.The release of comparing copper ion with the intrauterine device of rustless steel spiral spring bracket is more stable.
The specific embodiment
It is Ti-X or Ti-X-Y that the present invention adopts the titanium alloy main constituent that known method is made, 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 one or more of silicon (Si), palladium (Pd), platinum (Pt), gold (Au).
Metal has following three kinds of situations as support in intrauterine device:
1) be the spiral spring bracket of independent support effect;
2) play the spiral spring bracket of supplemental support effect;
3) play the planar bracket of independent support effect.
If the support of intrauterine device has been the spiral spring of independent support effect, this class supporting structure is generally the sealing forms such as palace shape (as palace shape and derivative first palace shape, the palace T shape by palace shape of routine), O shape, and the support force of support and distortion recovery capability 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 the silk material G (conversion relation that G=E/2 (1+u) arranged due to shear modulus G and elastic modulus E that is proportionate, u is Poisson's ratio, also can say with elastic modelling quantity to be proportionate) and the cube of radius be proportionate.Distortion recovery capability and tensile strength are proportionate.The Ti-15Zr-4Nb-4Ta that elastic modelling quantity is higher and Ti-15Sn-4Nb-2Ta are preferred, and titanium alloy is the circle silk of 0.3mm-0.5mm, or the shaped filaments that is equal to this circle sectional area.
If the support of intrauterine device has been the spiral spring of supplemental support effect, this class supporting structure is generally the open form such as Y shape, V-arrangement, γ shape, and the distortion recovery capability of support is primary Consideration, and this moment, lower elastic modelling quantity also can be accepted.Titanium alloy component can be any one of the scope of the invention, is shaped as the circle silk of 0.1mm-0.5mm, or the shaped filaments that is equal to this circle sectional area.
If the support of intrauterine device has been the plane of independent support effect, this class 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 designs also by shape can obtain higher elastic force, therefore the distortion recovery capability of support is primary Consideration, this moment, lower elastic modelling quantity also can be accepted.Titanium alloy component can be any one of the scope of the invention, is shaped as the circle silk of 0.3mm-0.5mm, or the shaped filaments that is equal to this circle sectional area.
Embodiment 1
Adopt the titanium alloy spiral spring to make the enclosed shape intrauterine device such as uterine cavity shaped (also comprising first palace shape, palace T shape) or O shape.
Titanium alloy is the Ti-Zr-Nb-Ta alloy, and its composition franchise is with reference to JIS T 7401-4.Permitted to contain in order to improve mechanical performance, to fill the oxygen (O) that accounts for gross weight 0.10%-0.5%, and the nitrogen of 0.02%-0.2% (N).Titanium alloy is the circle silk of 0.35mm-0.40mm, or the shaped filaments that is equal to this circle sectional area.
Embodiment 2
Adopt the titanium alloy spiral spring to make the enclosed shape intrauterine device such as uterine cavity shaped (also comprising first palace shape, palace T shape) or O shape.
Titanium alloy is Ti-15Sn-4Nb-4Ta.Permitted to contain in order to improve mechanical performance, to fill the oxygen (O) that accounts for gross weight 0.10%-0.5%, and the nitrogen of 0.02%-0.2% (N).Titanium alloy is the circle silk of 0.35mm-0.40mm, or the shaped filaments that is equal to this circle sectional area.
Except being used for the titanium alloy of enclosed shape intrauterine device that above-mentioned two embodiment provide, can also being but being not limited to following kind according to the composition expression formula of titanium alloy of the present invention:
Titanium alloy is the Ti-Nb alloy, for example:
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 the Ti-Nb-Ta alloy, for example:
Ti-22Nb-2Ta、Ti-22Nb-4Ta、Ti-22Nb-6Ta、Ti-22Nb-8Ta、Ti-29Nb-13Ta。
Titanium alloy is the Ti-Nb-Ta-Zr alloy, for example:
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 the Ti-Nb-Ta-Mo alloy, for example:
Ti-29Nb-13Ta-4Mo。
Titanium alloy is the Ti-Nb-Ta-Sn alloy, for example:
Ti-29Nb-13Ta-2Sn、Ti-29Nb-13Ta-4.6Sn、Ti-29Nb-13Ta-6Sn。
Titanium alloy is the Ti-Nb-Zr alloy, for example:
Ti-13Nb-13Zr、Ti-20Nb-13Zr、Ti-20Nb-20Zr、Ti-22Nb-2Zr、Ti-22Nb-4Zr、Ti-22Nb-6Zr。
Titanium alloy is the Ti-Nb-Zr-Sn alloy, for example:
Ti-24Nb-4Zr-7.9Sn。
Titanium alloy is the Ti-Nb-Hf alloy, for example:
Ti-16Nb-10Hf、Ti-16Nb-9.5Hf、Ti-22Nb-2Hf、Ti-22Nb-4Hf、Ti-22Nb-6Hf。
Titanium alloy is the Ti-Nb-Mo alloy, for example:
Ti-15Nb-4Mo、Ti-18Nb-3Mo、Ti-21Nb-2Mo、Ti-24Nb-1Mo。
Titanium alloy is the Ti-Nb-Si alloy, for example:
Ti-26Nb-0.5Si、Ti-26Nb-1.0Si、Ti-26Nb-1.5Si、Ti-27.4Nb-1.0Si。
Titanium alloy is the Ti-Nb-Sn alloy, for example:
Ti-16Nb-4Sn、Ti-16Nb-4.9Sn、Ti-35Nb-4Sn。
Titanium alloy is the Ti-Nb-Pd alloy, for example:
Ti-30Nb-3Pd。
Titanium alloy is the Ti-Mo alloy, for example:
Ti-5Mo、Ti-6Mo、Ti-7.5Mo、Ti-15Mo。
Titanium alloy is the Ti-Mo-Nb alloy, for example:
Ti-15Mo-3Nb。
Titanium alloy is the Ti-Mo-Nb-Zr alloy, for example:
Ti-15Mo-3Nb。
Titanium alloy is the Ti-Mo-Nb-Si alloy, for example:
Ti-15Mo-2.5Nb-0.2Si。
Titanium alloy is the Ti-Mo-Zr alloy, for example:
Ti-4Mo-4.8Zr。
Titanium alloy is the Ti-Mo-Zr-Sn alloy, for example:
Ti-11.5Mo-6Zr-4.3Sn、Ti-11.5Mo-6Zr-4.5Sn。
Titanium alloy is the Ti-Mo-Sn alloy, for example:
Ti-5Mo-2Sn、Ti-5Mo-3Sn、Ti-5Mo-5Sn、Ti-6Mo-4Sn。
Titanium alloy is the Ti-Ta alloy, for example:
Ti-30Ta、Ti-40Ta、Ti-50Ta、Ti-70Ta。
Titanium alloy is the Ti-Ta-Zr alloy, for example:
Ti-50Ta-10Zr。
Titanium alloy is the Ti-Ta-Sn alloy, for example:
Ti-40Ta-4Sn、Ti-40Ta-8Sn、Ti-40Ta-12Sn、Ti-50Ta-4Sn、Ti-50Ta-8Sn。
Titanium alloy is the Ti-Zr-Nb alloy, for example:
Ti-17Zr-18Nb。
Titanium alloy is the Ti-Zr-Si alloy, for example:
Ti-11Zr-0.15Si。
Titanium alloy is the Ti-Zr-Nb-Ta alloy, for example:
Ti-15Zr-4Nb-4Ta。
Titanium alloy is Ti-Sn-Nb-Ta, for example:
Ti-15Sn-4Nb-4Ta。
Claims (9)
1. titanium alloy that is used for the enclosed shape intrauterine device, expression formula is Ti-X, 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.
2. titanium alloy that is used for the enclosed shape intrauterine device, expression formula is 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.
3. titanium alloy according to claim 1 and 2, wherein, also contain one or more in silicon, palladium, platinum, gold in titanium alloy, accounts for 0.001%～30% of gross weight.
4. titanium alloy according to claim 1, wherein, expression formula is Ti-29Nb-13Ta.
5. titanium alloy according to claim 2, wherein, expression formula is Ti-15Sn-4Nb-2Ta.
6. titanium alloy according to claim 2, wherein, expression formula is Ti-15Zr-4Nb-4Ta.
7. utilize claim 1 or 2 or 3 described titanium alloys to make the support that titanium alloy wire is used for making intrauterine device, this support is the spiral spring structure.
8. support according to claim 7, wherein, titanium alloy wire is the circle silk of diameter 0.3mm～0.5mm, or the shaped filaments that is equal to this circle sectional area.
9. according to claim 7 or 8 described supports, wherein, titanium alloy wire is the circle silk of diameter 0.35mm～0.4mm, or the shaped filaments that is equal to this circle sectional area.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112342433A (en) * | 2020-09-29 | 2021-02-09 | 中国科学院金属研究所 | High-thermal-stability equiaxial nanocrystalline Ti-Zr-W alloy and preparation method thereof |
| CN114657416A (en) * | 2022-04-06 | 2022-06-24 | 西北有色金属研究院 | Low-temperature high-strength titanium alloy with excellent welding performance |
| CN115627384A (en) * | 2022-10-14 | 2023-01-20 | 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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| CN112342433A (en) * | 2020-09-29 | 2021-02-09 | 中国科学院金属研究所 | High-thermal-stability equiaxial nanocrystalline Ti-Zr-W alloy and preparation method thereof |
| CN114657416A (en) * | 2022-04-06 | 2022-06-24 | 西北有色金属研究院 | Low-temperature high-strength titanium alloy with excellent welding performance |
| CN115627384A (en) * | 2022-10-14 | 2023-01-20 | 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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