Hip arthroplasty implants
AssigneeGlobus Medical, Inc.
InventorsJohn Loiacono, Kenny Chen, Pasquale Petrera
Life of this patent
Estimating the term…
Abstract
Apparatus and method of removing a liner attached to an implanted acetabular shell. A surgical site is accessed where the acetabular shell has already been implanted into a patient. A rim plate having a through opening is placed over the acetabular shell. A pilot hole is then drilled into the attached liner through the opening in the placed rim plate. After the drilling, the rim plate is removed to expose the drilled hole. A removal tool is inserted into the drilled pilot hole. The attached liner is then disengaged from the implanted acetabular shell with the inserted removal tool.
Claims20
A method of removing a liner attached to an implanted acetabular shell comprising:
- accessing a surgical site where the acetabular shell is implanted into a patient;
- placing a rim plate having an opening on top of the implanted acetabular shell;
- drilling a pilot hole into the attached liner through the opening in the placed rim plate;
- removing the placed rim plate to expose the drilled hole;
- inserting a removal tool into the drilled pilot hole;
- disengaging the attached liner from the implanted acetabular shell with the inserted removal tool,
- wherein the removal tool includes two pairs of lateral extensions, each configured to rotationally couple to one of two gears.
An apparatus for removing a liner attached to an implanted acetabular shell comprising:
- a rim plate having an opening and adapted to be placed on top of the acetabular shell;
- a pilot hole drill tip sized to be inserted into the opening to create a pilot hole in the attached liner;
- a removal tool having an elongate shaft and a threaded tip extending from the shaft, the threaded tip sized to be inserted into the pilot hole for detaching the attached liner from the implanted acetabular shell,
- wherein the removal tool includes two pairs of lateral extensions, each configured to rotationally couple to one of two gears.
Dependencies are inferred from the claim text.