Granted Patent B2

US 8,961,613 · App. 13/678,516 · Granted Feb 24, 2015

Abstract

Claims (24)

1. A low friction resurfacing implant system comprising:

a first implant component comprising a first bearing surface and a first engagement surface located opposite the first bearing surface, wherein the first implant component has a leading edge and a trailing edge, wherein the first implant component comprises teeth that extend from the first engagement surface, wherein the teeth are arranged in a plurality of rows, wherein teeth in adjacent rows are offset from each other, wherein the first implant component further comprises a first opposing side and a second opposing side, wherein the first opposing side and the second opposing side each extend between the leading edge and the trailing edge and wherein the teeth comprise:

a first set of teeth proximate the first opposing side, wherein the first set of teeth each have an exterior face that faces the first opposing side and an interior face that faces the second opposing side;

a second set of teeth proximate the second opposing side, wherein the second set of teeth is oriented differently than the first set of teeth and wherein the second set of teeth each have an exterior face that faces the second opposing side and an interior face that faces the first opposing side; and

a third set of teeth between the first set of teeth and the second set of teeth, wherein the third set of teeth is oriented differently than the first set of teeth and the second set of teeth, wherein:

the first set of teeth comprises at least two rows of teeth, wherein the teeth in adjacent rows are offset from each other; and

the second set of teeth comprises at least two rows of teeth, wherein the teeth in adjacent rows are offset from each other.

2. The low friction resurfacing implant system of claim 1 , and further comprising:

a second implant component having a second bearing surface and a second engagement surface located opposite the second bearing surface, wherein the second implant component comprises teeth that extend from the second engagement surface and wherein the second implant component has a shape that is substantially the same as the first implant component.

3. The low friction resurfacing implant system of claim 1 , and further comprising:

a second implant component having a second bearing surface and a second engagement surface located opposite the second bearing surface, wherein the second implant component comprises teeth that extend from the second engagement surface and wherein the second implant component is substantially a mirror image of the first implant component.

4. The low friction resurfacing implant system of claim 1 , wherein the first bearing surface comprises a flattened section.

5. The low friction resurfacing implant system of claim 1 , wherein the first implant component is shaped to accommodate passage of an anterior cruciate ligament through a knee joint.

6. The low friction resurfacing implant system of claim 1 , wherein the first implant component is shaped to at least partially conform to a shape of at least one of a lateral femoral condyle, lateral tibial plateau, a medial femoral condyle and a medial tibial plateau.

7. The low friction resurfacing implant system of claim 1 , wherein the teeth comprise a first plurality of teeth and a second plurality of teeth, wherein the first plurality of teeth have a first width, wherein the second plurality of teeth have a second width and wherein the first width is greater than the second width.

8. The low friction resurfacing implant system of claim 1 , wherein the first implant component includes an insertion axis that extends between the leading edge and the trailing edge, wherein teeth proximate the leading edge have a depth that is greater than a depth of teeth proximate the trailing edge and wherein depth is in a direction that is aligned with the insertion axis.

9. The low friction resurfacing implant system of claim 1 , wherein the first implant component further comprises a first visualization marker that is fabricated from a radio-opaque material, wherein the first visualization marker comprises a first marker section and a second marker section and wherein the first marker section is oriented at an angle with respect to the second marker section.

10. The low friction resurfacing implant system of claim 1 , wherein:

the first set of teeth is positioned along the first opposing side; and

the second set of teeth is positioned along the second opposing side.

11. The low friction resurfacing implant system of claim 1 , wherein the teeth in the third set of teeth each have a leading face and a trailing face, wherein an angle between the trailing face and the first engagement surface is greater than an angle between the leading face and the first engagement surface.

12. The low friction resurfacing implant system of claim 1 , wherein the teeth each have a leading face and a trailing face, wherein an angle between the trailing face and the first engagement surface is greater than an angle between the leading face and the first engagement surface.

13. The low friction resurfacing implant system of claim 12 , wherein the angle between the leading face and the first engagement surface is between about 20° and about 60° and wherein the angle between the trailing face and the first engagement surface is between about 75° and about 105°.

14. The low friction resurfacing implant system of claim 12 , wherein the trailing face comprises an upper section and a lower section and wherein the upper section extends from the lower section but is not collinear with the lower section.

Assignments (13)