Stent device for spinal fusion

Patent metadata

Field	Value
Publication number	US-11766506-B2
Application number	US-201716077860-A
Country	US
Kind code	B2
Filing date	Feb 28, 2017
Priority date	Mar 4, 2016
Publication date	Sep 26, 2023
Grant date	Sep 26, 2023

Abstract

A bone implant for at least partial insertion into a bone and/or cartilage. The bone implant is at least partially formed of a metal alloy of at least about 90 wt % of a solid solution or a rhenium and molybdenum alloy.

First claim

What is claimed:

1. A bone implant used to repair a spinal column, said bone implant at least partially formed of a metal alloy, said metal alloy including at least about 90 wt. % of a solid solution or a rhenium and molybdenum alloy, said metal alloy including at least about 40 wt. % rhenium and at least about 40 wt. % molybdenum, said metal alloy having a controlled amount of nitrogen, oxygen and carbon so as to reduce micro-cracking in said metal alloy, a nitrogen content of said metal alloy less than a combined content of oxygen and carbon in said metal alloy, said metal alloy including an oxygen to nitrogen atomic ratio of at least about 1.2:1, said metal alloy including a carbon to nitrogen atomic ratio of at least about 2:1, said metal alloy including an outer layer formed by a gas nitriding process, a salt-bath nitriding process, or a plasma nitriding process, wherein said nitride surface layer results in enhanced wear resistance properties to said rhenium and molybdenum alloy as compared to a similar rhenium and molybdenum alloy absent said nitride surface layer.

2. The bone implant as defined in claim 1 , wherein said bone implant is fully formed of said metal alloy.

3. The bone implant as defined in claim 1 , wherein said metal alloy includes at least about 99 wt. % of a solid solution, said solid solution including at least 95 wt. % rhenium and molybdenum and less than about 5 wt. % of a metal selected from the group consisting of titanium, yttrium, zirconium, or mixtures thereof.

4. The bone implant as defined in claim 1 , wherein said metal alloy includes about 45-50 wt. % rhenium and about 50-55 wt. % molybdenum.

5. The bone implant as defined in claim 2 , wherein said metal alloy includes about 45-50 wt. % rhenium and about 50-55 wt. % molybdenum.

6. The bone implant as defined in claim 1 , wherein said bone implant is in the form of a rod, nail, screw or post.

7. A method of at least partially inserting an implant into a bone and/or cartilage of a spinal column comprising:
a) providing a bone implant as defined in claim 1 ; and,
b) at least partially inserting said bone implant into said bone and/or cartilage of a spinal column.

8. A method of at least partially inserting an implant into a bone and/or cartilage of a spinal column comprising:
a) providing a bone implant as defined in claim 2 ; and,
b) at least partially inserting said bone implant into said bone and/or cartilage of a spinal column.

Assignees

• Mirus Llc

Inventors

• Roth Noah
• Yadav Jay

Classifications

• A61L27/04 Primary

  Metals or alloys · CPC title

• A61B17/70

  Spinal positioners or stabilisers, e.g. stabilisers comprising fluid filler in an implant · CPC title

• A61L27/54

  Biologically active materials, e.g. therapeutic substances {(A61L27/227 takes precedence)} · CPC title

• A61L31/022

  Metals or alloys · CPC title

• A61L31/16

  Biologically active materials, e.g. therapeutic substances {(A61L31/047 takes precedence)} · CPC title