Modular bone model

• US 10,588,752 B2
• Filed: 03/28/2017
• Issued: 03/17/2020
• 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.
• Primary Examiner(s): Stewart, Alvin J
• Application Number:
  US15/471,369
• Publication Number:
  US 20170281355A1
• Time in Patent Office: 1,085 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 at least a portion of the natural bone, the bone component comprising a physical bone model that is manufactured based on measurements obtained by imaging the natural bone; and

a trial implant component shaped and sized to approximate at least a portion of the medical implant, the trial implant component including a trial articulating surface that approximates an articulating surface of the medical implant;

wherein the trial implant component is positionable on the bone component to approximate mounting of the medical implant onto the natural bone; and

wherein the bone component further includes a releasable locking feature engageable to the trial implant component for fixing the trial implant component on the bone component.

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

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

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

wherein the planar surface of the trial 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 trial implant component to maintain the trial 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 trial implant component such that the trial 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 trial 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 trial implant component further includes an engagement feature engageable to the releasable locking feature of the bone component.

8. 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.

9. The bone model of claim 8, wherein the trial 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.

10. The bone model of claim 1, wherein the bone component manufactured by 3D printing.

11. 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 at least a portion of the natural bone, the bone component manufactured based on measurements obtained by imaging the natural bone; and

a trial implant component shaped and sized to approximate at least a portion of the medical implant, the trial implant component including a trial articulating surface that approximates an articulating surface of the medical implant;

wherein the trial implant component is positionable on the bone component to approximate mounting of the medical implant onto the natural bone; and

wherein the bone component further includes a releasable locking feature engageable to the trial implant component for fixing the trial implant component on the bone component and at least one positioning feature for adjustably engaging the trial implant component to maintain the trial implant component on the bone component, wherein the positioning feature further includes a slide for slidably engaging the trial implant component such that the trial implant component can be slid on the at least one positioning feature to at least one offset position.

12. The bone model of claim 11, wherein the bone component is manufactured by 3D printing.

13. 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 at least a portion of the natural bone, the bone component manufactured based on measurements obtained by imaging the natural bone; and

a trial implant component shaped and sized to approximate at least a portion of the medical implant, the trial implant component including a trial articulating surface that approximates an articulating surface of the medical implant;

wherein the trial implant component is positionable on the bone component to approximate mounting of the medical implant onto the natural bone; and

wherein the bone component further includes a releasable locking feature engageable to the trial implant component for fixing the trial implant component on the bone component, a bone latch hole, and a ring insertable through the bone latch hole.

14. The bone model of claim 13, wherein the bone component defines a generally planar mounting surface;

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

15. The bone model of claim 14, wherein the trial implant component defines a planar surface opposite the trial articulating surface;

wherein the planar surface of the trial implant component corresponds to the planar mounting surface of the bone component.

16. The bone model of claim 15, wherein the bone component further includes:

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

17. The bone model of claim 16, wherein the positioning feature further includes:

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

18. The bone model of claim 17, wherein the trial implant component further includes:

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

19. The bone model of claim 13, wherein the bone component is manufactured by 3D printing.