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US 9,808,347 B2Granted
Liner system
AssigneeBiomet Manufacturing, LLC
InventorsKirk J. Bailey, Aaron P. Smith, W. Jason Slone
Life of this patent
Estimating the term…
Abstract
A prosthesis according to the present disclosure includes a shell. A liner is disposed within the shell, and a femoral head may be disposed within the liner. A locking mechanism may assist in securing the liner within the shell. The locking mechanism may be removed when the shell, liner, and femoral head are implanted. The shell extends beyond a hemisphere of the shell, and the liner extends beyond a hemisphere of the liner.
Claims22
A prosthesis comprising:
- a shell having a shell inner surface;
- a unitary liner disposed within the shell;
- and
- a locking mechanism securing the liner within the shell,
- wherein the locking mechanism is configured to be removed when the shell, liner, and a femoral head are implanted, wherein the shell extends beyond a hemisphere of the shell and the unitary liner extends beyond a hemisphere of the unitary liner, such that an outer liner surface of the unitary liner engages the entirety of the shell inner surface beyond the hemisphere of the unitary liner.
2 more elements
A prosthesis, comprising:
- a cup having a cup inner surface;
- a unitary insert disposed within the cup, wherein the insert is deformed and expanded when disposed in the cup, the unitary insert including a rim and a hemisphere, wherein a diameter of the rim is less than a diameter of the hemisphere, wherein an outer surface of the insert engages the entirety of the cup inner surface beyond the hemisphere;
- a femoral head configured to be disposed within the insert such that the femoral head articulates within the insert;
- and
- a ring in a first configuration for securing the insert within the cup, wherein the ring is configured to be removed when the cup, insert, and femoral head are implanted while the femoral head is constrained within the insert.
2 more elements
A method for implanting a prosthesis, comprising:
- inserting a shell including a shell inner surface into an acetabular cavity;
- inserting a unitary liner into a cavity defined within the shell, wherein the liner extends beyond a hemisphere of the liner and an outer surface of the liner engages an entirety of the shell inner surface beyond the hemisphere;
- engaging a locking mechanism in a channel formed in the liner for at least assisting in securing the liner in the shell;
- inserting a femoral head into a cavity defined within the liner;
- and
- removing the locking mechanism from the channel.
3 more elements
Dependencies are inferred from the claim text.