Thermally Sprayed Surface Layer As Well As An Orthopedic Implant

• US 20100211182A1
• Filed: 12/10/2009
• Published: 08/19/2010
• Est. Priority Date: 12/16/2008
• Status: Abandoned Application

• Current Assignee: Oerlikon Metco AG (OC Oerlikon Corporation AG)
• Original Assignee: Oerlikon Metco AG (OC Oerlikon Corporation AG)
• Inventors: Zimmermann, Harald
• Application Number:
  US12/635,262
• Publication Number:
  US 20100211182A1
• Time in Patent Office: Days
• US Class Current: 623/23.530
• CPC Class Codes: A61L 27/306 Other specific inorganic materials not covered by A61L27/303 - A61L27/32
• CPC Class Codes: A61L 27/32 Phosphorus-containing materials, e.g. apatite
• CPC Class Codes: C23C 28/021 including at least one metal alloy layer
• CPC Class Codes: C23C 28/023 only coatings of metal elements only
• CPC Class Codes: C23C 28/027 including at least one metal matrix material comprising a mixture of at least two metals or metal phases or metal matrix composites, e.g. metal matrix with embedded inorganic hard particles, CERMET, MMC.
• CPC Class Codes: C23C 30/00 Coating with metallic material characterised only by the composition of the metallic material, i.e. not characterised by the coating process C23C26/00, C23C28/00 take precedence
• CPC Class Codes: C23C 4/08 containing only metal elements C23C4/073 takes precedence
• CPC Class Codes: C23C 4/12 characterised by the method of spraying

Abstract

The invention relates to a thermally sprayed surface layer of titanium (21) on a non-metal substrate (3) of an orthopedic implant (1). In accordance with the invention, the thermally sprayed surface layer (2) includes an X-ray sensitive admixture with respect to the titanium (21), wherein the X-ray sensitive admixture includes a biocompatible indicator metal (4) between 0.01 at % and 20 at %, wherein the atomic weight of the biocompatible indicator metal (4) is larger than the atomic weight of titanium (21). Furthermore, the invention relates to an orthopedic implant (1) with a thermally sprayed surface layer (2).

Claims

1. A thermally sprayed surface layer of titanium (21) on a non-metal substrate (3) of an orthopedic implant (1), characterized in that the thermally sprayed surface layer includes an X-ray sensitive admixture with respect to the titanium (21), wherein the X-ray sensitive admixture includes a biocompatible indicator metal (4) between 0.01 at % and 20 at %, wherein the atomic weight of the biocompatible indicator metal (4) is larger than the atomic weight of titanium (21).

2. A thermally sprayed surface layer in accordance with claim 1, wherein the proportion of the indicator metal (4) lies between 0.5 at % and 5 at %.

3. A thermally sprayed surface layer in accordance with claim 1, wherein the indicator metal (4) is a metal from the group including tantalum, gold, platinum and hafnium.

4. A thermally sprayed surface layer in accordance with claim 3, wherein the indicator metal (4) is an alloy of two metals from the group including tantalum, gold, platinum and hafnium.

5. A thermally sprayed surface layer in accordance with claim 1, wherein the thermally sprayed surface layer includes, apart from any contaminants, titanium (21) and the indicator metal (4).

6. A thermally sprayed surface layer in accordance with claim 1, wherein the thermally sprayed surface layer is formed as a titanium matrix (200) having regions (41) of embedded indicator metal (4).

7. An orthopedic implant including a non-metal substrate (3) with a thermally sprayed surface layer (2) of titanium (21), characterized in that the thermally sprayed surface layer (2) includes an x-ray sensitive admixture with respect to the titanium (21), wherein the x-ray sensitive admixture includes a biocompatible indicator metal (4) between 0.01 at % and 20 at %, wherein the atomic weight of the biocompatible indicator metal (4) is larger than the atomic weight of titanium (21).

8. An orthopedic implant in accordance with claim 7, wherein the proportion of the indicator metal (4) lies between 0.5 at % and 5 at %.

9. An orthopedic implant in accordance with claim 7, wherein the indicator metal (4) is a metal from the group including tantalum, gold, platinum and hafnium.

10. An orthopedic implant in accordance with claim 9, wherein the indicator metal (4) is an alloy of two metals from the group including tantalum, gold, platinum and hafnium.

11. An orthopedic implant in accordance with claim 7, wherein the thermally sprayed layer (2) includes, apart from any contaminants, titanium (21) and the indicator metal (4)

12. An orthopedic implant in accordance with claim 7, wherein the thermally sprayed surface layer (2) is formed as a titanium matrix (200) having regions (41) of embedded indicator metal (4).

13. An orthopedic implant in accordance with claim 7, wherein the substrate (3) includes a biocompatible plastic, in particular PEEK (31) and/or a carbon fiber material (32), in particular a PEEK carbon fiber composite material (33).

14. An orthopedic implant in accordance with claim 7, wherein a biocompatible hydroxylapatite layer (5) is provided on the thermally sprayed surface layer (2).

15. An orthopedic implant in accordance with claim 7, wherein the orthopedic implant is a shoulder implant, an elbow implant, a spinal column implant, a hip joint implant, a knee implant, a finger implant or any other orthopedic implant.