Compliant tibial tray assembly
First Claim
1. A tibial tray assembly for attaching within a cavity formed in a tibia, said tibial tray assembly comprising:
- a main body including a tibial tray operable to engage a prepared tibia surface and a post attached to said tibial tray;
an anchor operable to be retained within the cavity formed in the tibia; and
a compliant portion operable to be expanded and contracted, said compliant portion disposed between said main body and said anchor, said compliant portion and said anchor formed as a monolithic structure, wherein said post is threadably coupled to said compliant portion.
5 Assignments
0 Petitions
Accused Products
Abstract
The present invention provides a tibial tray assembly for attaching within a cavity formed in a tibia. The tibial tray assembly includes a main body, an anchor, and a compliant portion disposed between the main body and the anchor. The main body includes a tibial tray that is operable to engage a prepared tibia surface. The anchor is operable to be retained within the cavity formed in the tibia and includes an attachment mechanism located within the cavity and operable to fixedly attach the anchor within the cavity formed within the tibia. The compliant portion disposed between the main body and the anchor is operable to be expanded and contracted.
112 Citations
13 Claims
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1. A tibial tray assembly for attaching within a cavity formed in a tibia, said tibial tray assembly comprising:
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a main body including a tibial tray operable to engage a prepared tibia surface and a post attached to said tibial tray;
an anchor operable to be retained within the cavity formed in the tibia; and
a compliant portion operable to be expanded and contracted, said compliant portion disposed between said main body and said anchor, said compliant portion and said anchor formed as a monolithic structure, wherein said post is threadably coupled to said compliant portion. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A tibial tray assembly for attaching within a cavity formed in a tibia, said tibial tray assembly comprising:
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a main body including a tibial tray operable to engage a prepared tibia surface;
an anchor operable to be retained within the cavity formed in the tibia;
a compliant portion operable to be expanded and contracted, said compliant portion disposed between said main body and said anchor, said compliant portion and said anchor formed as a monolithic structure; and
a sleeve defining a recess, wherein said compliant portion is disposed within said recess of said sleeve to substantially inhibit nonaxial deflection of said compliant portion.
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9. A tibial tray assembly for attaching within a cavity formed in a tibia, said tibial tray assembly comprising:
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a main body including a tibial tray operable to engage a prepared tibia surface;
an anchor operable to be retained within the cavity formed in the tibia, said anchor body defines a stepped shoulder wherein said stepped shoulder defines an engagement surface operable to be engaged by an insertion device to insert said anchor in the cavity formed in the tibia; and
a compliant portion operable to be expanded and contracted, said compliant portion disposed between said main body and said anchor, said compliant portion and said anchor formed as a monolithic structure.
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10. A tibial tray assembly for attaching within a cavity formed in a tibia, said tibial tray assembly comprising:
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a main body including a post attached to a tibial tray, said tibial tray operable to engage a prepared tibial surface;
an anchor operable to be retained within said cavity formed within the tibia, said anchor including external helical threads operable to fixedly attach said anchor within the cavity formed within the tibia;
a compliant portion operable to be expanded and contracted, said compliant portion disposed between said main body and said anchor, said compliant portion and said anchor formed as a monolithic structure; and
a sleeve defining a recess, said compliant portion disposed and contained within said recess of said sleeve and operable to substantially inhibit nonaxial deflection of said compliant portion.
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11. A tibial tray assembly for attaching within a cavity formed in a tibia, said tibial tray assembly comprising:
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a main body including a post attached to a tibial tray, said tibial tray operable to engage a prepared tibial surface;
an anchor operable to be retained within said cavity formed within the tibia, said anchor including external helical threads operable to fixedly attach said anchor within the cavity formed within the tibia, said anchor including a stepped shoulder defining an engagement surface operable to be engaged by an instrument to insert said anchor into the cavity formed in the tibia; and
a compliant portion operable to be expanded and contracted, said compliant portion disposed between said main body and said anchor, said compliant portion and said anchor formed as a monolithic structure. - View Dependent Claims (12)
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13. A tibial tray assembly for attaching within a cavity formed in a tibia, said tibial tray assembly comprising:
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a main body including a threaded post operable to threadably pass through a tibial tray, said tibial tray operable to engage a prepared tibial surface;
an anchor operable to be retained within the cavity formed in the tibia, said anchor including helical threads operable to fixedly attach said anchor within the cavity formed within the tibia; and
a helical compliant portion operable to be expanded and contracted, said helical compliant portion being shaped as a helical spring, said helical compliant portion disposed between said main body and said anchor, said compliant portion and said anchor are formed as a monolithic structure, wherein said post is threadably attached to said compliant portion and is operable to adjust a force applied to said compliant portion.
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Specification