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US 2018/0008425 A1Published application
Stabilized total ankle prosthesis
AssigneeWright Medical Technology, Inc.
InventorChristine M. Petteys
Life of this patent
Estimating the term…
Abstract
The present invention relates to a stabilized ankle prosthesis configured for use in patients with compromised soft tissue in the ankle. The prosthesis of the present invention is a two-component design comprising a stabilizing lip configured to constrain movement in the general direction of compromised soft tissue.
Claims20
An ankle prosthesis comprising:
- a tibial component configured for attachment to a tibia, comprising a body having at least one side and an attachment surface on a proximal portion, the at least one side tapers inwardly toward the attachment surface, the at least one side and the attachment surface of the body being adapted to fit a recess formed in a resected tibia, the tibial component having an articulation surface on a distal portion that is wider than the attachment surface;
- and
- a talar component configured for attachment to a talus, comprising an attachment surface on a distal portion and an articulation surface on a proximal portion;
- wherein the articulation surface of the talar component is configured to complement the articulation surface of the tibial component.
1 more element
An ankle prosthesis comprising:
- a tibial component configured for attachment to a tibia, including an attachment surface on a proximal portion, an articulation surface on a distal portion, and at least one side extending between the proximal portion and the distal portion, the at least one side tapering inward toward the attachment surface, the at least one side and the attachment surface of the body adapted to fit into a recess formed in a resected tibia, the articulation surface being wider than the attachment surface;
- a talar component configured for attachment to a talus, comprising an attachment surface on a distal portion and an articulation surface on a proximal portion;
- wherein the articulation surface of the talar component comprises a medial portion and a lateral portion, the medial portion having a first convex contour, the lateral portion having a second convex contour, wherein a first concave contour is located between the first and second convex contours;
- wherein the articulation surface of the tibial component comprises a medial portion and a lateral portion, the medial portion having a second concave contour, the lateral portion having a third concave contour wherein a third convex contour is located between the second and third concave contours, and the articulation surface of the talar component is configured to complement the articulation surface of the talar component.
1 more element
An ankle prosthesis comprising:
- a tibial component configured for attachment to a tibia, comprising an attachment surface on a proximal portion and an articulation surface on a distal portion,
- a talar component comprising a proximal portion and a distal portion, wherein:
- the proximal portion of the talar component has an articulation surface and a trapezoid-shaped projection opposite the articulation surface,
- the distal portion of the talar component has an attachment surface configured for attachment to a talus, the distal portion of the talar component having a trapezoid-shaped groove opposite the attachment surface, the trapezoid-shaped groove configured to slidably receive the trapezoid-shaped projection of the proximal portion of the talar component,
- wherein the articulation surface of the talar component is configured to complement the articulation surface of the tibial component.
2 more elements
Dependencies are inferred from the claim text.