Titanium molybdenum hafnium alloys for medical implants and devices
First Claim
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1. A medical implant or device fabricated from a titanium alloy suitable for use in the fabrication of medical implants and devices, said medical implant or device comprising:
- components at least partially fabricated from a metal alloy comprising;
a) titanium;
b) between about 6 to 9 weight percent molybdenum;
c) between about 6 to 9 weight percent hafnium;
wherein the alloy provides for high-strength and hardness, low elastic modulus, enhanced corrosion resistance, and surface hardening of the medical implant or device.
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Abstract
This invention describes a biocompatible, radiopaque, high-strength, low-modulus, titanium based alloy having about 2-30 weight percent Mo and up to about 30 weight percent Hf. This alloy is suitable for use in the fabrication of medical implants and devices having low modulus, improved corrosion resistance and surface hardening. To increase strength, Cr, Si and Fe can be added in small amounts as well as increasing levels of interstitial oxygen, nitrogen or carbon. To maintain low elastic modulus, Mo can be partially substituted by Nb.
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Citations
20 Claims
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1. A medical implant or device fabricated from a titanium alloy suitable for use in the fabrication of medical implants and devices, said medical implant or device comprising:
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components at least partially fabricated from a metal alloy comprising; a) titanium; b) between about 6 to 9 weight percent molybdenum; c) between about 6 to 9 weight percent hafnium; wherein the alloy provides for high-strength and hardness, low elastic modulus, enhanced corrosion resistance, and surface hardening of the medical implant or device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A medical implant or device fabricated from a titanium alloy suitable for use in the fabrication of medical implants and devices, said medical implant or device comprising:
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components at least partially fabricated from a metal alloy comprising; a) titanium; b) 2 weight percent molybdenum; c) 6 weight percent hafnium; d) 10 weight percent niobium; wherein the alloy provides for enhanced strength and hardness, low modulus, corrosion resistance and surface hardening of the medical implant or device. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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18. A titanium alloy suitable for use in non-medical device applications comprising;
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components at least partially fabricated from a metal alloy comprising; a) titanium; b) between about 6 to 9 weight percent molybdenum; c) between about 6 to 9 weight percent hafnium; wherein the alloy provides for high-strength and hardness, low elastic modulus, enhanced corrosion resistance, and surface hardening.
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19. A titanium alloy suitable for use in non-medical device applications comprising;
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components at least partially fabricated from a metal alloy comprising; a) titanium; b) 2 weight percent molybdenum; c) 6 weight percent hafnium; d) 10 weight percent niobium; wherein the alloy provides for enhanced strength and hardness, low modulus, corrosion resistance and surface hardening. - View Dependent Claims (20)
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Specification