Prosthetic joint with articulating surface layers comprising ADLC

• US 10,182,924 B2
• Filed: 12/27/2005
• Issued: 01/22/2019
• Est. Priority Date: 12/28/2004
• Status: Active Grant

• Current Assignee: Depuy Synthes Products Incorporated (Johnson & Johnson)
• Original Assignee: Depuy Synthes Products Incorporated (Johnson & Johnson)
• Inventors: Lechmann, Beat, Kuenzi, Thomas, Frigg, Robert, Appenzeller, Andreas
• Primary Examiner(s): Lynch, Robert
• Application Number:
  US11/722,905
• Publication Number:
  US 20080154383A1
• Time in Patent Office: 4,774 Days
• Field of Search: 623 1711, 623 1714, 623 1715, 623 1716, 623 7141
• CPC Class Codes: A61F 2/4425 made of articulated components
• CPC Class Codes: A61F 2/4611 of spinal prostheses
• CPC Class Codes: A61F 2002/30092 using shape memory or superelastic materials, e.g. nitinol
• CPC Class Codes: A61F 2002/30125 elliptical or oval
• CPC Class Codes: A61F 2002/30133 kidney-shaped or bean-shaped
• CPC Class Codes: A61F 2002/30331 made by longitudinally pushing a protrusion into a complementarily-shaped recess, e.g. held by friction fit
• CPC Class Codes: A61F 2002/30601 telescopic
• CPC Class Codes: A61F 2002/30616 Sets comprising a plurality of prosthetic parts of different sizes or orientations
• CPC Class Codes: A61F 2002/30649 Ball-and-socket joints
• CPC Class Codes: A61F 2002/30841 Sharp anchoring protrusions for impaction into the bone, e.g. sharp pins, spikes
• CPC Class Codes: A61F 2002/443 having two transversal endplates and at least one intermediate component
• CPC Class Codes: A61F 2002/4627 with linear motion along or rotating motion about the instrument axis or the implantation direction, e.g. telescopic, along a guiding rod, screwing inside the instrument
• CPC Class Codes: A61F 2210/0014 using shape memory or superelastic materials, e.g. nitinol
• CPC Class Codes: A61F 2220/0033 made by longitudinally pushing a protrusion into a complementary-shaped recess, e.g. held by friction fit
• CPC Class Codes: A61F 2230/0008 elliptical or oval
• CPC Class Codes: A61F 2230/0015 Kidney-shaped, e.g. bean-shaped
• CPC Class Codes: A61F 2310/00023 Titanium or titanium-based alloys, e.g. Ti-Ni alloys
• CPC Class Codes: A61F 2310/00029 Cobalt-based alloys, e.g. Co-Cr alloys or Vitallium
• CPC Class Codes: A61F 2310/00179 Ceramics or ceramic-like structures
• CPC Class Codes: A61F 2310/0058 Coating made of diamond or of diamond-like carbon DLC
• CPC Class Codes: A61F 2310/00748 : Coating made of titanium carbide

Abstract

The prosthetic joint has at least two members having each a cooperating articulating surface layer on a substrate material. At least one of said articulating surface layers comprises amorphous diamond-like carbon; or Titanium Nitrate (TiN) on a bonding layer bonded to the substrate material. The prosthetic joint provides a reduction of the number of wear debris and shows enhanced dry run properties.

Claims

1. An intervertebral implant comprising:

an upper apposition member including an upper terminal surface sized and configured to abut a first vertebra, a lower surface opposite the upper terminal surface, and a first recess that extends into the lower surface;

a lower apposition member including a lower terminal surface sized and configured to abut a second vertebra, an upper surface opposite the lower terminal surface, and a second recess that extends into the upper surface;

a first substrate coupled to the upper apposition member, the first substrate including a first curved surface;

an articulating surface layer and a bonding layer positioned between the articulating surface layer and the first curved surface, the articulating surface layer including a multi-layer composite, wherein the multi-layer composite includes a layer consisting of titanium and a layer consisting of titanium nitride adjacent the layer consisting of titanium; and

a second substrate coupled to the lower apposition member, the second substrate including a second curved surface configured to movably contact the first curved surface so that the upper apposition member is moveable with respect to the lower apposition member.

2. The intervertebral implant of claim 1, wherein the articulating surface layer is a first articulating surface layer, the bonding layer is a first bonding layer, and the multi-layer composite is a first multi-layer composite;

the intervertebral implant further comprising;

a second articulating surface layer and a second bonding layer positioned between the second articulating surface layer and the second curved surface, the second articulating surface layer including a second multi-layer composite, wherein the second multi-layer composite includes a layer of titanium and a layer of titanium nitride adjacent the layer of titanium.

3. The intervertebral implant of claim 2, wherein the layer consisting of titanium is a first layer of titanium, the layer consisting of titanium nitride is a first layer of titanium nitride, and the first multi-layer composite includes a second layer of titanium and a second layer of titanium nitride adjacent the second layer of titanium.

4. The intervertebral implant of claim 3, wherein the second layer of titanium nitride is adjacent to the first layer of titanium.

5. The intervertebral implant of claim 2, wherein the first bonding layer comprises Niobium, Silizium, Tantalum or Gold.

6. The intervertebral implant of claim 5, wherein the second bonding layer comprises Niobium, Silizium, Tantalum or Gold.

7. The intervertebral implant of claim 1, wherein the first curved surface is concave, and the second curved surface is convex.

8. The intervertebral implant of claim 1, wherein the first curved surface is spherical.

9. The intervertebral implant of claim 8, wherein the second curved surface is spherical.

10. The intervertebral implant of claim 1, further comprising a joint member that is configured to be coupled to the upper apposition member, the joint member including the first substrate.