Stent device for spinal fusion

Patent metadata

Field	Value
Publication number	US-2023390454-A1
Application number	US-202318233067-A
Country	US
Kind code	A1
Filing date	Aug 11, 2023
Priority date	Mar 4, 2016
Publication date	Dec 7, 2023
Grant date	—

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

1 - 36 . (canceled)

37 . A bone implant at least partially formed of metal coated material that includes a core material and a metal coating; said core material formed of a different material than said metal coating; said core material including one or more materials selected from the group consisting of metal alloy, ceramic or composite material; said metal coating form of a metal alloy selected from the group consisting of a) at least about 90 wt. % of a solid solution or rhenium and molybdenum and one or more alloying agents selected from the group consisting of calcium, carbon, chromium, cobalt, copper, gold, hafnium, iron, lead, magnesium, nickel, niobium, osmium, platinum, rare earth metal, silver, tantalum, technetium, titanium, tungsten, vanadium, yttrium, zinc and zirconium, or b) tungsten and copper, and wherein said tungsten and copper constitute at least 90 wt. % of said metal alloy; said core material of said metal coated material constituting 50-99% of an overall cross-section of said metal coated material.

38 . The bone implant as defined in claim 37 , wherein a hardness of said core material is less than a hardness of said metal coating; said core material has a hardness of 250 Vickers to 550 Vickers; said metal coating has a hardness of 350 Vickers to 1000 Vickers.

39 . The bone implant as defined in claim 37 , wherein said metal alloy of said metal coating includes at least 95 wt. % of a solid solution of a rhenium and molybdenum and one or more alloying agents selected from the group consisting of chromium, cobalt, copper, hafnium, nickel, niobium, osmium, rare earth metal, tantalum, technetium, titanium, tungsten, vanadium, yttrium, and zirconium.

40 . The bone implant as defined in claim 38 , wherein said metal alloy of said metal coating includes at least 95 wt. % of a solid solution of a rhenium and molybdenum and one or more alloying agents selected from the group consisting of chromium, cobalt, copper, hafnium, nickel, niobium, osmium, rare earth metal, tantalum, technetium, titanium, tungsten, vanadium, yttrium, and zirconium.

41 . The bone implant as defined in claim 39 , wherein said metal alloy of said metal coating includes at least 95 wt. % of a solid solution of a rhenium and molybdenum and chromium.

42 . The bone implant as defined in claim 40 , wherein said metal alloy of said metal coating includes at least 95 wt. % of a solid solution of a rhenium and molybdenum and chromium.

43 . The bone implant as defined in claim 37 , wherein said metal alloy of said metal coating includes at least 95 wt. % of a solid solution of tungsten and copper.

44 . The bone implant as defined in claim 38 , wherein said metal alloy of said metal coating includes at least 95 wt. % of a solid solution of tungsten and copper.

45 . The bone implant as defined in claim 37 , wherein said metal alloy of said metal coating has 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 includes an oxygen to nitrogen atomic ratio of at least about 1.2:1; said metal alloy includes a carbon to nitrogen atomic ratio of at least about 2:1.

46 . The bone implant as defined in claim 37 , wherein an outer surface of said metal alloy of said metal coating has 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.

47 . The bone implant as defined in claim 37 , wherein said metal alloy of said metal coating is at least partially formed from powdered particles of said metal alloy; an average particle size of said powder particles is less than 74 microns.

48 . The bone implant as defined in claim 37 , wherein said bone implant is in the form of a rod, nail, screw, post, a bone plate or an implant that repairs and/or supports a bone.

49 . 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 37 ; and, b) at least partially inserting said bone implant into said bone and/or cartilage of a spinal column.

50 . A medical device at least partially formed of metal material; said medical device includes b) a bone plate or b) an implant that repairs and/or supports a bone; said metal material is partially or fully formed of a metal alloy; said metal alloy includes i) at least about 90 wt. % of a solid solution or rhenium and molybdenum and one or more alloying agents selected from the group consisting of calcium, carbon, chromium, cobalt, copper, gold, hafnium, iron, lead, magnesium, nickel, niobium, osmium, platinum, rare earth metal, silver, tantalum, technetium, titanium, tungsten, vanadium, yttrium, zinc and zirconium, or ii) tungsten and copper, and wherein said tungsten and copper constitute at least 90 wt. % of said metal alloy; said metal alloy has 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 includes an oxygen to nitrogen atomic ratio of at least about 1.2:1; said metal alloy includes a carbon to nitrogen atomic ratio of at least about 2:1.

51 . The medical device as defined in claim 50 , wherein said metal material is formed of multiple metal layers; one layer is formed of said metal alloy; one other layer is formed of a) titanium alloy, b) chromium alloy, c) chromium-cobalt alloy, or d) stainless-steel.

52 . The medical device as defined in claim 50 , wherein said metal alloy of said metal coating includes at least 95 wt. % of a solid solution of a rhenium and molybdenum and one or more alloying agents selected from the group consisting of chromium, cobalt, copper, hafnium, nickel, niobium, osmium, rare earth metal, tantalum, technetium, titanium, tungsten, vanadium, yttrium, and zirconium.

53 . The medical device as defined in claim 51 , wherein said metal alloy of said metal coating includes at least 95 wt. % of a solid solution of a rhenium and molybdenum and one or more alloying agents selected from the group consisting of chromium, cobalt, copper, hafnium, nickel, niobium, osmium, rare earth metal, tantalum, technetium, titanium, tungsten, vanadium, yttrium, and zirconium.

54 . The medical device as defined in claim 50 , wherein said metal alloy of said metal coating includes at least 95 wt. % of a solid solution of a rhenium and molybdenum and chromium.

55 . The medical device as defined in claim 53 , wherein said metal alloy of said metal coating includes at least 95 wt. % of a solid solution of a rhenium and molybdenum and chromium.

56 . The medical device as defined in claim 50 , wherein said metal alloy of said metal coating includes at least 95 wt. % of a solid solution of tungsten and copper.

57 . The medical device as defined in claim 51 , wherein said metal alloy of said metal coating includes at least 95 wt. % of a solid solution of tungsten and copper.

58 . The medical device as defined in claim 51 , wherein said one layer or said one other layer forms a core of said metal material; said core constituting 50-99% of an overall cro

Assignees

• Mirus Llc

Inventors

• Roth Noah
• Yadav Jay

Classifications

• A61L27/04 Primary

  Metals or alloys · 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

• A61B17/70

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