Humeral implant having a floating bearing
AssigneeBiomet Manufacturing, LLC
InventorsNathan A. Winslow, John M. McDaniel
Life of this patent
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Abstract
A shoulder can include a fixed bearing having a generally spherical articulating surface configured to be coupled to a glenoid. The implant can also include a floating bearing member defining a first spherical bearing surface and a second planar articulating bearing surface. The implant can include a stem defining a stem planar bearing surface coupled to the second planar articulating bearing surface. The second planar articulating bearing surface can cooperate with the stem planar bearing surface to enable the floating bearing to translate relative to the stem.
Claims13
A shoulder implant comprising:
- a fixed bearing defining a stop surface and having a generally spherical articulating surface configured to be coupled to a glenoid;
- a floating bearing member defining a first spherical bearing surface and a second planar articulating bearing surface, wherein the first spherical bearing surface cooperates with the generally spherical articulating surface of the fixed bearing;
- and
- a stem defining a stem planar bearing surface coupled to the second planar articulating bearing surface, wherein the second planar articulating bearing surface cooperates with the stem planar bearing surface to enable the floating bearing to translate relative to the stem when the floating bearing member is contacted by the stop surface.
A shoulder implant comprising:
- a fixed bearing having a spherical articulating surface;
- a floating bearing having a first surface that articulates with the fixed bearing spherical articulating surface, the floating bearing defining a translatable planar bearing having a second planar articulating surface;
- and
- a stem having a planar bearing surface that engages and translates the translatable second planar articulating surface,
- wherein the fixed bearing comprises a stop surface operably positioned to limit movement of the fixed bearing with respect to the stem when the fixed bearing articulates with the floating bearing.
Dependencies are inferred from the claim text.