MODULAR BONE MODEL

• US 20170281355A1
• Filed: 03/28/2017
• Published: 10/05/2017
• Est. Priority Date: 03/29/2016
• Status: Active Grant

• Current Assignee: Biomet Manufacturing, LLC (Zimmer Biomet Holdings, Inc.)
• Original Assignee: Biomet Manufacturing, LLC (Zimmer Biomet Holdings, Inc.)
• Inventors: Winslow, Nathan A., Kehres, Clinton E.
• Granted Patent: US 10,588,752 B2
• Time in Patent Office: Days
• CPC Class Codes: A61F 2/30771 applied in original prostheses, e.g. holes or grooves
• CPC Class Codes: A61F 2/30942 for designing or making customized prostheses, e.g. using templates, CT or NMR scans, finite-element analysis or CAD-CAM techniques
• CPC Class Codes: A61F 2/4003 Replacing only the epiphyseal or metaphyseal parts of the humerus, i.e. endoprosthesis not comprising an entire humeral shaft replacing only the epiphyseal or metaphyseal parts of the femur A61F2/3601
• CPC Class Codes: A61F 2/4014 Humeral heads or necks; Connections of endoprosthetic heads or necks to endoprosthetic humeral shafts
• CPC Class Codes: A61F 2/4684 Trial or dummy prostheses
• CPC Class Codes: A61F 2002/30492 using a locking pin
• CPC Class Codes: A61F 2002/30495 using a locking ring
• CPC Class Codes: A61F 2002/3052 unrestrained in only one direction, e.g. moving unidirectionally
• CPC Class Codes: A61F 2002/30604 modular
• CPC Class Codes: A61F 2002/30672 temporary
• CPC Class Codes: A61F 2002/4018 Heads or epiphyseal parts of humerus
• CPC Class Codes: G09B 23/32 with moving parts
• CPC Class Codes: G09B 23/34 with removable parts

Abstract

A modular bone model can include a bone component and an implant component that can be positioned on the bone component. The implant component can be shaped and sized to correspond to a head component of a medical implant to simulate an articulating surface of the head component. Similarly, the bone component can be shaped to simulate a natural bone to which the medical implant can be mounted. Alternatively, the head component of the medical implant can be mounted directly to the bone component to simulate the mounting on the natural bone.

Claims

1. A bone model for trialing a medical implant mountable on a natural bone to repair a natural articulating surface, comprising:

a bone component shaped and sized to approximate the natural bone; and

an implant component defining an artificial articulating surface and being sized and shaped such that the artificial articulating surface approximates the natural articulating surface;

wherein the implant component is positionable on the bone component to approximate mounting of the medical implant onto the natural bone.

2. The bone model of claim 1, wherein the bone component defines a generally planar mounting surface;

wherein the implant component is positionable on the planar mounting surface.

3. The bone model of claim 2, wherein the implant component defines a planar surface opposite the artificial articulating surface;

wherein the planar surface of the implant component is shaped to correspond to the planar mounting surface of the bone component.

4. The bone model of claim 1, wherein the bone component further includes:

at least one positioning feature for adjustably engaging the implant component to maintain the implant component on the bone component.

5. The bone model of claim 4, wherein the positioning feature further includes:

a slide for slidably engaging the implant component such that the implant component can be slid on the at least one positioning feature to at least one offset position.

6. The bone model of claim 4, wherein the implant component further includes:

at least one alignment feature for adjustably engaging the at least one positioning feature of the bone component.

7. The bone model of claim 1, wherein the bone component further includes a releasable locking feature engageable to the implant component for fixing the implant component on the bone component.

8. The bone model of claim 7, wherein the implant component further includes an engagement feature engageable to the releasable locking feature of the bone component.

9. The bone model of claim 1, wherein the bone component further includes:

a bone latch hole; and

a ring insertable through the bone latch hole.

10. The bone model of claim 9, wherein the implant component further includes:

an implant latch hole;

wherein the ring is insertable through the implant latch hole to adjustably connect the implant component to the bone component.

11. A bone model system for trialing a medical implant mountable on a natural bone to repair a natural articulating surface, comprising:

a bone component shaped and sized to approximate the natural bone; and

a head component defining an artificial articulating surface and being sized and shaped such that the artificial articulating surface approximates the natural articulating surface, the head component,

wherein the head component is adjustably positionable on the bone component to approximate mounting of the head component on the natural bone upon attachment of the head component to the medical implant.

12. The bone model system of claim 11, wherein the bone component defines a generally planar mounting surface;

wherein the head component is positionable on the planar mounting surface.

13. The bone model system of claim 12, wherein the head component defines a planar surface opposite the artificial articulating surface;

wherein the planar surface of the head component corresponds to the planar mounting surface of the bone component.

14. The bone model system of claim 11, wherein the bone component further includes:

at least one positioning feature for adjustably engaging the bone component to maintain the head component on the bone component.

15. The bone model system of claim 14, wherein the positioning feature further includes:

a slide for slidably engaging the bone component such that the head component can be slid on the at least one positioning feature to at least one offset position.

16. The bone model system of claim 14, wherein the head component further includes:

at least one alignment feature for adjustably engaging the at least one positioning feature of the bone component.

17. The bone model system of claim 11, the bone component further including a releasable locking feature engageable to the head component to secure the head component to the bone component.

18. The bone model system of claim 17, wherein the head component further includes an engagement feature engageable to the releasable locking feature of the bone component;

wherein the engagement feature is engageable to a mounting feature of the head component.

19. The bone model of claim 11, the head component further comprising a locking pin port for receiving a locking pin to mount the head component to the medical implant.

20. A method for trialing a medical implant, comprising:

providing a bone component shaped and sized to approximate a natural bone to which the medical implant is mountable;

providing an implant component defining an artificial articulating surface;

adjustably positioning the implant component on the bone component to approximate positioning of the medical implant on the natural bone.

21. The method of claim 20, wherein the implant component is sized and shaped to approximate a head component attachable to the medical implant;

wherein the head component defines an articulating surface approximated by the artificial articulating surface.

22. The method of claim 20, wherein the bone component defines a generally planar mounting surface.

23. The method of claim 22, wherein adjustably positioning the implant component on the bone component comprises positioning the implant component on the planar mounting surface to simulate positioning of the medical component on the natural bone.