Implant bearing removal guide
AssigneeZimmer, Inc.
InventorKevin Miller
Life of this patent
Estimating the term…
Abstract
A drill guide for separation a bearing from a tray of an implant assembly can include a body, a collar, a first projection, a second projection, and a third projection. The body can be engageable with the bearing. The collar can be connected to the body and can define a guide bore configured to guide a drill bit into the bearing when the drill guide is engaged with the bearing. The first projection and the second projection can be engageable with a radially outer surface of the bearing. The third projection can be configured to engage an articulation surface of the bearing to, together with the first projection and the second projection, position the guide bore along a trajectory to guide the drill bit to form a hole in the bearing between the articulation surface and the tray when the bearing is connected to the tray.
Claims18
A drill guide for separation and removal of a bearing from a tray of an implant assembly, the drill guide comprising:
- a body engageable with the bearing to orient the body with respect to the bearing and the tray;
- a collar connected to the body and defining a guide bore configured to guide a drill bit into the bearing when the drill guide is engaged with the bearing;
- a first projection and a second projection engageable with a radially outer surface of the bearing;
- a third projection connected to the body and configured to engage an articulation surface of the bearing to, together with the first projection and the second projection, position the guide bore along a trajectory to guide the drill bit to form a hole in the bearing between the articulation surface and the tray when the bearing is connected to the tray;
- and
- a sleeve insertable into the guide bore, the sleeve defining a drill bore to receive the drill bit at least partially therethrough to guide the drill bit along the trajectory, the guide bore configured to receive a screw at least partially therethrough when the sleeve is removed from the guide bore, the screw having a diameter larger than a diameter of the drill bit.
A drill guide for separation and removal of a bearing from a tray of an implant assembly, the drill guide comprising:
- a body engageable with the bearing to orient the body with respect to the bearing and the tray;
- a collar connected to the body and defining a guide bore for receiving a drill bit at least partially therethrough to guide the drill bit into the bearing when the drill guide is engaged with the bearing;
- a first projection and a second projection engageable with a radially outer surface of the bearing;
- a third projection connected to the body and configured to engage an articulation surface of the bearing to, together with the first projection and the second projection, position the guide bore along a trajectory to form a hole in the bearing between the articulation surface and the tray;
- and
- a sleeve insertable into the guide bore, the sleeve defining a drill bore to receive the drill bit at least partially therethrough to guide the drill bit along the trajectory, the guide bore configured to receive a screw at least partially therethrough when the sleeve is removed from the guide bore, the screw having a diameter larger than a diameter of the drill bit.
Dependencies are inferred from the claim text.