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US 7,842,091 B2Granted
Implantable replacement joint
AssigneesGrampian University Hospitals NHS Trust, University of Aberdeen
InventorsAlan John Johnstone, Duncan Eoin Thomson Shepherd
Life of this patent
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Abstract
An implantable replacement joint includes first and second components having respective bores, and a flexible member within a cavity formed by the respective bores.
Claims26
An implantable replacement joint comprising a first component for attachment to a first bone portion;
- a second component for attachment to a second bone portion;
- and a flexible component extending between the first and second components;
- wherein each of the first and second components has a respective bore and the flexible component is received within a cavity formed by the bores of the first and second components;
- wherein the flexible component is freely-floating within the cavity;
- wherein the cavity formed by the bores in the first and second components is longer than the flexible component so that the flexible component can move axially within the cavity;
- and
- wherein the flexible component is free to move laterally and rotationally within the cavity.
4 more elements
A replacement joint comprising a first component for attachment to a first bone portion;
- a second component for attachment to a second bone portion;
- and a flexible component extending between the first and second components;
- wherein each of the first and second components has a respective bore and the flexible component is received within a cavity formed by the bores of the first and second components, and wherein the first and second components have bearing surfaces that articulate against one another when the device is assembled;
- wherein the flexible component is freely-floating within the cavity;
- wherein the cavity formed by the bores in the first and second components is longer than the flexible component so that the flexible component can move axially within the cavity;
- wherein the flexible component is free to move laterally and rotationally within the cavity, and
- wherein the bearing surface of the first component is convex along a first axis and the bearing surface of the second component is convex along a second axis, the first and second axes being mutually perpendicular to promote pivotal movements of the first and second components relative to one another.
4 more elements
An implantable replacement joint comprising a first component for attachment to a first bone portion;
- a second component for attachment to a second bone portion;
- and a flexible component extending between the first and second components;
- wherein each of the first and second components has a respective bore and the flexible component is received within a cavity formed by the bores of the first and second components;
- wherein the flexible component is freely-floating within the cavity;
- wherein the flexible component is free to move axially, laterally and rotationally within the cavity;
- and
- wherein the first and second components have bearing surfaces that articulate against one another when the device is made up.
4 more elements
An implantable replacement joint comprising a first component for attachment to a first bone portion;
- a second component for attachment to a second bone portion;
- and a flexible component extending between the first and second components;
- wherein each of the first and second components has a respective bore and the flexible component is received within a cavity formed by the bores of the first and second components;
- wherein the flexible component is freely-floating within the cavity;
- and
- wherein the cavity formed by the bores in the first and second components is longer than the flexible component so that the flexible member can move axially within the cavity.
3 more elements
Dependencies are inferred from the claim text.