Ti, Al and Nb alloys
First Claim
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1. A method for forming a finished implant prosthesis which comprises:
- (a) providing an unforged alloy consisting essentially of Ti(x %)Al(y %)Nb wherein x is between about 45 to 54% by atoms, y is between about 15 to 25% by atoms and the balance is niobium;
(b) forging the alloy at an elevated temperature below a melting point of the alloy in a shape which is an implant preform; and
(c) machining the implant preform to provide a machined implant; and
(d) finishing the exposed surfaces of the implant so as to provide the exposed surfaces with a finish which provides biocompatibility, to thereby form the implant prosthesis.
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Abstract
A method for forming a finished implant prosthesis which comprises:
- (a) providing an unforged alloy consisting essentially of Ti(x %)Al(y %)Nb wherein x is between about 45 to 54% by atoms, y is between about 15 to 25% by atoms and the balance is niobium;
- (b) forging the alloy at an elevated temperature below a melting point of the alloy in a shape which is an implant preform; and
- (c) machining the implant preform to provide a machined implant; and
- (d) finishing the exposed surfaces of the implant so as to provide the exposed surfaces with a finish which provides biocompatibility, to thereby form the implant prosthesis.
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Citations
16 Claims
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1. A method for forming a finished implant prosthesis which comprises:
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(a) providing an unforged alloy consisting essentially of Ti(x %)Al(y %)Nb wherein x is between about 45 to 54% by atoms, y is between about 15 to 25% by atoms and the balance is niobium; (b) forging the alloy at an elevated temperature below a melting point of the alloy in a shape which is an implant preform; and (c) machining the implant preform to provide a machined implant; and (d) finishing the exposed surfaces of the implant so as to provide the exposed surfaces with a finish which provides biocompatibility, to thereby form the implant prosthesis. - View Dependent Claims (2, 4, 8, 9, 10, 11)
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3. A method for forming a finished implant prosthesis which comprises:
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(a) providing an unforged alloy of Ti-21Al-29Nb; (b) forging the alloy at an elevated temperature below a melting point of the alloy in a shape which is an implant preform; and (c) machining the implant preform to provide a machined implant; and (d) finishing the exposed surfaces of the implant so as to provide the exposed surfaces with a finish which provides biocompatibility, to thereby form the implant prosthesis.
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5. In a method for treating a patient by implanting an implant prosthesis with modification of a bone surface so as to accept the prosthesis, the improvement which comprises:
(a) implanting the implant prosthesis wherein the implant prosthesis comprises a forged and machined alloy consisting essentially of Ti(x %)Al(y %)Nb, wherein x is between about 45 to 54% by atoms and wherein y is between about 15 to 25% by atoms and the balance is Nb, wherein the implant is able to withstand at least 105 fatigue cycles at a stress of 400 MPa and has a surface finish which is biocompatible. - View Dependent Claims (6)
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7. In a method for treating a patient by implanting an implant prosthesis with modification of a bone surface so as to accent the prosthesis, the improvement which comprises:
(a) implanting the implant prosthesis wherein the implant prosthesis comprises a forged and machined alloy of Ti-21Al-29Nb, wherein the implant is able to withstand at least 105 fatigue cycles at a stress of 400 MPa and has a surface finish which is biocompatible.
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12. A method for forming a finished implant prosthesis which comprises:
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(a) providing an unforged alloy consisting essentially of Ti(x %)Al(y %)Nb wherein x is between about 50 to 52% by atoms, y is between about 15 to 21% by atoms and the balance is niobium; (b) forging the alloy at an elevated temperature below a melting point of the alloy in a shape which is an implant preform; and (c) machining the implant preform to provide a machined implant; and (d) finishing the exposed surfaces of the implant so as to provide the exposed surfaces with a finish which provides biocompatibility, to thereby form the implant prosthesis. - View Dependent Claims (13, 14, 15, 16)
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Specification