Revision-implant receiver, an implant anchor and method of use thereof
AssigneeMatOrtho Limited
InventorsCharles Jonas Ambrose Cullum, Simon Nicholas Collins
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Abstract
A revision-implant receiver (18) is provided for supporting an implant (20) of a revision joint replacement (10). The revision-implant receiver (18) comprises a first receiver element (22) and a second receiver element (24). The first receiver element (22) and the second receiver element (24) are engaged with each other via a hinge element (26).
Claims11
A revision-implant receiver for supporting an implant of a revision joint replacement, the revision-implant receiver-comprising a first receiver element and a second receiver element-which is engaged via a hinge element with the first receiver element;
- wherein the first receiver element and the second receiver element define together a central cavity for receiving a stem of the implant therein, and the hinge element comprises a first pair of bendable linking portions between the first receiver element and the second receiver element, each bendable linking portion of the first pair being positioned on either side of the central cavity to define a first hinge axis,
- wherein the hinge element comprises a second pair of bendable linking portions between the first receiver element and the second receiver element, each bendable linking portion of the second pair being positioned on either side of the central cavity and defining a second hinge axis;
- wherein the hinge element comprises a spacer segment which is positioned between the first receiver element and the second receiver element, said spacer segment being hingeably engaged with the first receiver element by the first pair of bendable linking portions, and with the second receiver element by the second pair of bendable linking portions such that the second hinge axis is spaced-apart from the first hinge axis.
A method of improving an angular orientation of an implant in revision arthroplasty, the method having the steps of:
- a) providing a revision implant and a revision-implant receiver, said revision-implant receiver comprising:
- a first receiver element and a second receiver element which is engaged via a hinge element with the first receiver element;
- wherein the first receiver element and the second receiver element define together a central cavity for receiving a stem of the implant therein, and the hinge element comprises a first pair of bendable linking portions between the first receiver element and the second receiver element, each bendable linking portion of the first pair being positioned on either side of the central cavity to define a first hinge axis,
- wherein the hinge element comprises a second pair of bendable linking portions between the first receiver element and the second receiver element, each bendable linking portion of the second pair being positioned on either side of the central cavity and defining a second hinge axis;
- wherein the hinge element comprises a spacer segment which is positioned between the first receiver element and the second receiver element, said spacer segment being hingeably engaged with the first receiver element by the first pair of bendable linking portions, and with the second receiver element by the second pair of bendable linking portions such that the second hinge axis is spaced-apart from the first hinge axis;
- and
- adjusting a relative angle between the two hingeably connected portions of the revision-implant receiver to improve the angular orientation of the revision implant in a coronal plane and/or in a sagittal plane.
Dependencies are inferred from the claim text.