Granted Patent B2

US 12,728,011 · App. 18/055,982 · Granted Sep 8, 2026

Inventors: Robert J. Ball (West Olive, MI); William J. Slone (Silver Lake, IN)

Assignee: Stryker European Operations Limited

A61F2/40A61F2002/30332A61F2002/30433A61F2002/30507A61F2002/30566A61F2002/4022A61F2002/4077

Abstract

Claims (40)

1 . An implant, comprising:

a base member configured to be secured in bone, the base member comprising:

a plate portion,

a stem extending from the plate portion, the stem being positioned offset from a center of the plate portion, and

a projection extending away from a first side of the plate portion;

an articulating member; and

a coupling portion for securing the base member to the articulating member, wherein the coupling portion comprises:

a first fixation component;

a second fixation component including an opening for receiving the first fixation component, wherein the first fixation component is configured to be coupled to the articulating member and the second fixation component is configured to be coupled to the base member, and

an elastic member with a first end and a second end, wherein the first end of the elastic member is configured to engage a second end of the first fixation component and the second end of the elastic member is configured to engage a recess inside the projection of the base member,

wherein the first fixation component is configured to be received within the second fixation component and a portion of the first fixation component is configured to extend out an opening in a first end of the second fixation component.

2 . The implant of claim 1 , wherein the stem extends away from a second side of the plate portion.

3 . The implant of claim 2 , wherein the articulating member includes an outer surface, an interior surface, and a cavity extending into the articulating member from the interior surface.

4 . The implant of claim 3 , wherein the second fixation component is coupled to the projection of the base member, the projection of the base member with the coupled coupling portion is positioned within the cavity of the articulating member, and the first fixation component is coupled to the articulating member.

5 . The implant of claim 4 , wherein the plate portion is positioned within a lip extending from the interior surface of the articulating member.

6 . The implant of claim 5 , wherein the lip has a width and the width varies around a periphery of the interior surface of the articulating member.

7 . An implant, comprising:

a base member configured to be secured in bone, the base member comprising a plate portion and a stem extending from the plate portion, the stem being positioned offset from a center of the plate portion;

an articulating member including an outer surface, an interior surface, and a cavity extending into the articulating member from the interior surface; and

a coupling portion for securing the base member to the articulating member, wherein the coupling portion comprises:

a securement member with a first portion at a first end, a second portion at a second end, and an intermediate portion positioned between the first portion and the second portion;

an elastic member engaging at least a portion of the second portion; and

an engagement member coupled to the intermediate portion,

wherein the securement member is configured to be coupled to the articulating member and the engagement member is configured to be coupled to the base member, wherein the base member includes a projection extending away from a first side of the plate portion and the stem extending away from a second side of the plate portion.

8 . The implant of claim 7 , wherein the first portion has threads along at least a portion of the first portion.

9 . The implant of claim 7 , wherein the intermediate portion comprises:

a first protrusion coupled to a second end of the first portion;

a second protrusion coupled to a first end of the second portion; and

a recess between the first protrusion and the second protrusion, wherein the recess receives the elastic member.

10 . The implant of claim 9 , wherein the projection of the base member comprises:

a cavity extending into the projection from a top surface of the projection toward the first side of the plate portion; and

a retaining member positioned around and extending into the cavity near the top surface of the projection.

11 . The implant of claim 10 , wherein the first protrusion of the intermediate portion engages a bottom surface of the retaining member of the base member.

12 . A method of using an implant, comprising:

positioning a base member of the implant within a bone, the base member including a plate portion, a stem extending from the plate portion and being offset from a center of the plate portion, and a projection extending away from a first side of the plate portion;

attaching an articulating member of the implant to the base member with a coupling portion positioned at least partially within a projection of the base member and the projection and a portion of the coupling portion extending into a cavity within the articulating member to engage a threaded portion in the cavity of the articulating member, wherein the coupling portion includes:

a first fixation component,

a second fixation component including an opening for receiving the first fixation component, and

an elastic member with a first end and a second end, the first end of the elastic member engaging a second end of the first fixation component, and the second end of the elastic member engaging a recess inside the projection of the base member,

wherein when the first fixation component is received within the second fixation component, a portion of the first fixation component extends out of the opening of the second fixation component.

Assignments (2)

Continuity (3)

References Cited (400)