Universal liner
AssigneeSmith & Nephew, Inc.
InventorsJeffrey Shea, Vincent Shotton, David Kelman
Life of this patent
Estimating the term…
Abstract
The present invention relates to universal liner assemblies for use during hip joint replacement surgeries, kits providing a plurality of universal liners, and methods of manufacturing and implanting the universal liners. The universal liners allow the surgeon a greater degree of selection of liners and shells, without being tied to typical liner/shell connections based on material connection constraints.
Claims23
A universal liner assembly, comprising:
- (a) a shell having an inner surface;
- (b) a liner component having an outer surface;
- (c) a band integrally formed around a portion of the outer surface of the liner component such that, in use, the band is adapted to interface with the inner surface of the shell and lock the liner component within the shell, regardless of the material of the liner component.
A universal liner kit, comprising:
- (a) a plurality of liner and band assemblies, each assembly comprising a liner component with a band integrally assembled around a portion of the liner component, wherein the liner components are provided in a plurality of materials selected the group consisting of metal, cobalt-chromium, surgical steel, surgical steel alloys, diamond coated metal, ceramic, diamond coated ceramic, polyethylene, biocompatible polymers, or any combinations thereof;
- and
- (b) one or more shell components adapted to receive one of the plurality of liner components.
A universal liner assembly, comprising:
- (a) a polyethylene liner component having an outer surface;
- (b) a band having anti-rotation features adapted to cooperate with the outer surface, the band integrally formed around the outer surface of the polyethylene liner component such that, in use, the band is adapted to interface with and secure the universal liner in a shell that was initially designed for use with a ceramic or metal liner.
A method of manufacturing a polyethylene universal liner, comprising:
- (a) providing a polyethylene liner component;
- (b) cooling the liner component to cause it to shrink;
- (c) fitting a circumferential band around the liner component;
- (d) allowing the liner component to warm to cause it to expand, causing the band to lock to the liner component.
A method of performing a joint revision implant surgery, comprising
- (a) leaving a shell from a previous surgery in place in the patient's socket;
- (b) placing a universal liner in the shell, the universal liner comprising
- (i) a liner having an outer surface;
- (ii) a band integrally formed around the outer surface of the liner such that, in use, the band is adapted to interface with the shell and lock the liner within the shell, regardless of the material of the liner.
Dependencies are inferred from the claim text.