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US 2014/0228854 A1Published application
Apparatus And Method For Positioning A Prosthesis
AssigneeBiomet Manufacturing, LLC
InventorsTyler D. WITT, Austen DAVENPORT
Life of this patent
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Abstract
According to various embodiments, a multi-use tool may include a member having a first surface and a second surface. The first surface can engage at least one of a shell and/or bearing liner for insertion thereof. The second surface may engage at least one of a shell and/or bearing liner for removal thereof.
Claims25
An instrument assembly for an acetabular prosthesis system, comprising:
- a member having a first side having a first engaging projection configured to engage a complementary recess of an acetabular shell to rotationally hold the acetabular shell relative to the member;
- the member defining a guide-bore through the member, wherein the guide-bore is configured to guide a bit through the guide-bore and into a soft bearing liner placed within the acetabular shell;
- wherein the guide-bore is formed at a selected angle through the member along a guide-bore axis, wherein the guide-bore axis intersects an internal surface of the acetabular shell a distance from a bearing liner connection section.
An instrument assembly for an acetabular prosthesis system, comprising:
- a member having a first side having a first engaging projection configured to engage a complementary recess of an acetabular shell to rotationally hold the acetabular shell relative to the member;
- the member having a second side having a contact surface to engage a hard bearing liner for placement within the acetabular shell;
- wherein the member is configured to be placed in a first orientation relative to the acetabular shell to implant the acetabular shell within a subject and then placed in a second orientation to implant the hard bearing liner within the acetabular shell.
A method of using an instrument assembly, comprising:
- engaging at least a first projection on a first side of a member with an acetabular shell for placing the acetabular shell within a subject;
- disengaging the first projection on the first side of the member from the acetabular shell after placing the acetabular shell within the subject;
- engaging at least one second projection on a second side of the member with the placed acetabular shell within the subject to align a hard bearing liner with the placed acetabular shell;
- and
- moving the hard bearing liner into the placed acetabular shell within the subject to engage the hard bearing liner within the acetabular shell.
2 more elements
A method of using an instrument assembly, comprising:
- engaging a first side of a member with an acetabular shell;
- passing a bit through a guide-bore formed through the member;
- forming a pilot bore within a soft liner placed within the acetabular shell, wherein the pilot bore is formed along a pilot bore axis aligned with a guide bore axis such that the pilot bore axis intersects an internal surface of the acetabular shell a distance from a soft bearing liner engagement region;
- inserting a soft liner removal tool into the pilot bore along the pilot bore axis;
- moving the soft bearing liner remove tool to contact the internal surface of the acetabular shell the distance from the soft bearing liner engagement region;
- and
- removing the soft bearing liner.
4 more elements
Dependencies are inferred from the claim text.