Instruments for Setting Acetabular Cup
OwnerThomas Gradelinventor
Life of this patent
Estimating the term…
Abstract
A cup and a temporary insert are respectively configured to be tightly press fitted into each other along their periphery. The temporary insert includes a through hole communicating outside with a free space between the outer surface of the temporary insert and the inner surface of the cup. In the through hole can be engaged the threaded end of an impactor, for manipulating the cup when it is being set. A syringe can be engaged, enabling a liquid under pressure to be injected into the free space, thus separating the temporary insert from the cup without any risk of damaging the inner surface of the cup. Thus, the cup can be securely manipulated when it is being set without any risk of damaging the inner surface of the cup.
Claims19
1-18. (canceled)
Set of acetabular cup prosthesis setting means, comprising a cup delimited by a convex proximal face, a concave distal face with a sliding surface, and a peripheral lip, and further comprising an adapter for fastening the cup to an impactor, the adapter including:
- fixing means for detachably fixing the adapter to the impactor,
- fixing means on the cup, leaving a free space between the adapter and the cup once the adapter is fixed to the cup,
- an access hole through which the free space between the adapter and the cup communicates with the outside,
- wherein:
- the cup comprises, on its concave distal face, a cylindrical or slightly conical annular retaining surface extending the sliding surface toward the peripheral lip,
- the adapter comprises a cylindrical or slightly conical annular engagement surface the same shape as the annular retaining surface of the cup,
- with the result that the adapter may be forcibly retained in fluid-tight manner with its annular engagement surface gripped radially in the annular retaining surface of the cup.
Dependencies are inferred from the claim text.