Fe-mn absorbable implant alloys with increased degradation rate
AssigneeBio DG, Inc.
InventorJohn A. DISEGI
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Abstract
The present invention is directed to a biodegradable alloy suitable for use in a medical implant, comprising at least 50% iron by weight, at least 25% manganese by weight, and at least 0.01% sulfur and/or selenium by weight, wherein the biodegradable alloy is nonmagnetic. The present invention also provides a method of producing a biodegradable alloy with a desirable degradation rate.
Claims33
A biodegradable alloy suitable for use in a medical implant, comprising at least 50% iron by weight, at least 25% manganese by weight, and at least 0.01% sulfur and/or selenium by weight, wherein the biodegradable alloy is nonmagnetic.
A method of producing a biodegradable alloy with a desirable degradation rate, the method comprising:
- (a) adding a composition comprising sulfur and/or selenium to a molten mixture to produce the biodegradable alloy, wherein the molten mixture has at least 50% iron by weight and at least 25% manganese by weight, and wherein the biodegradable alloy comprises at least 0.01% sulfur and/or selenium by weight, and
- (b) cooling the biodegradable alloy.
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A method of producing a biodegradable alloy with a desirable degradation rate, the method comprising adding 100 to 3500 parts per million sulfur to a molten mixture having at least 50% iron by weight and at least 25% manganese by weight, thereby producing a biodegradable alloy having at least 0.01% sulfur by weight.
Dependencies are inferred from the claim text.