Modular acetabular trial liner system
AssigneeDepuy Ireland Unlimited Company
InventorsDustin N. Albert, Conner D. Lett
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Abstract
A trial liner for use in a hip arthroplasty surgical procedure is disclosed. The trial liner includes a rim and a semi-hemispherical body attached to the rim. The semi-hemispherical body includes a concave inner wall extending inwardly from the rim to define a cavity, a convex outer wall extending from the rim opposite the inner wall, and an interior wall extending between the inner wall and the outer wall and defining an opening at an apex of the semi-hemispherical body. The semi-hemispherical body is adapted to deflect and modify the opening, when pressed against a head of a screw, to accept the head of the screw within the opening. A system that includes the trial liner and the screw, and a method for using the system in a surgical procedure, are also disclosed.
Claims16
A trial liner for use in a hip arthroplasty surgical procedure, comprising:
- a rim;
- a concave inner wall extending inwardly from the rim to define a cavity;
- a convex outer wall extending from the rim opposite the inner wall, wherein the rim, the concave inner wall, and the convex outer wall to define a semi-hemispherical body of the trial liner;
- and
- an interior wall extending between the inner wall and the outer wall and defining (i) an opening at an apex of the semi-hemispherical body and (ii) a set of slots that extend in opposite directions from the opening,
- wherein the semi-hemispherical body is adapted to deflect and modify the opening, when pressed against a head of a screw, to accept the head of the screw within the opening.
A modular acetabular trial liner system comprising:
- a screw that includes a head and a threaded proximal portion;
- and
- a trial liner having
- a semi-hemispherical body that includes (i) a rim;
- (ii) a concave inner wall extending inwardly from the rim to define a cavity;
- (iii) a convex outer wall extending from the rim opposite the inner wall;
- and (iv) an interior wall extending between the inner wall and the outer wall and defining an opening at an apex of the semi-hemispherical body and a set of slots that extend in opposite directions from the opening,
- wherein the semi-hemispherical body is adapted to deflect and modify the opening, when pressed against the head of the screw, to accept the head of the screw within the opening.
Dependencies are inferred from the claim text.