IMPLANT PLANNING FOR MULTIPLE IMPLANT COMPONENTS USING CONSTRAINTS

• US 20100153081A1
• Filed: 12/11/2008
• Published: 06/17/2010
• Est. Priority Date: 12/11/2008
• Status: Abandoned Application

• Current Assignee: MAKO Surgical Corporation (Stryker Corporation)
• Original Assignee: MAKO Surgical Corporation (Stryker Corporation)
• Inventors: BELLETTRE, ALEXANDRA, Arata, Louis, Wojcik, Jason, Van Vorhis, Robert, Otto, Jason
• Application Number:
  US12/333,109
• Publication Number:
  US 20100153081A1
• Time in Patent Office: Days
• US Class Current: 703/11
• CPC Class Codes: A61B 2034/102 Modelling of surgical devices, implants or prosthesis
• CPC Class Codes: A61B 2034/105 Modelling of the patient, e.g. for ligaments or bones
• CPC Class Codes: A61B 2034/2055 Optical tracking systems
• CPC Class Codes: A61B 34/10 Computer-aided planning, simulation or modelling of surgical operations
• CPC Class Codes: A61B 34/30 Surgical robots
• CPC Class Codes: A61B 5/4504 Bones A61B5/4547 takes precedence
• CPC Class Codes: A61B 5/4514 Cartilage
• CPC Class Codes: A61B 5/4528 Joints A61B5/4533, A61B5/4538 take precedence
• CPC Class Codes: A61B 5/745 using a holographic display
• CPC Class Codes: G06T 17/20 Finite element generation, e.g. wire-frame surface description, tesselation
• CPC Class Codes: G06T 19/00 Manipulating 3D models or images for computer graphics
• CPC Class Codes: G06T 2200/24 involving graphical user interfaces [GUIs]
• CPC Class Codes: G06T 2207/10081 Computed x-ray tomography [CT]
• CPC Class Codes: G06T 2207/30008 Bone
• CPC Class Codes: G06T 7/33 using feature-based methods
• CPC Class Codes: G16H 20/40 relating to mechanical, radiation or invasive therapies, e.g. surgery, laser therapy, dialysis or acupuncture
• CPC Class Codes: G16H 30/20 for handling medical images, e.g. DICOM, HL7 or PACS
• CPC Class Codes: G16H 50/50 for simulation or modelling of medical disorders
• CPC Class Codes: G16Z 99/00 Subject matter not provided for in other main groups of this subclass

Abstract

Described are computer-based methods and apparatuses, including computer program products, for implant planning for multiple implant components using constraints. A representation of a bone and a representation of a first implant component are displayed with respect to the representation of the bone. A representation of a second implant component is displayed, wherein the first implant component and the second implant component are physically separated and not connected to each other. A positioning of the representation of the second implant component that violates at least one positioning constraint is prevented, wherein the positioning constraint is based on the representation of the first implant component.

Claims

1. A surgical planning computerized method comprising:

displaying a representation of a bone and a representation of a first implant component with respect to the representation of the bone;

displaying a representation of a second implant component, wherein the first implant component and the second implant component are physically separated and not connected to each other; and

preventing a positioning of the representation of the second implant component that violates at least one positioning constraint, wherein the positioning constraint is based on the representation of the first implant component.

2. The method of claim 1 further comprising:

calculating a plurality of areas representing cartilage; and

preventing a positioning of the representation of the first implant component that violates a second positioning constraint that is based on the plurality of areas representing cartilage.

3. The method of claim 1 wherein the at least one positioning constraint comprises a rigid constraint between the representation of the first implant component and the representation of the second implant component, wherein the rigid constraint prevents a positioning of the representation of the second implant component that is independent of the representation of the first implant component.

4. The method of claim 1 wherein the at least one positioning constraint comprises one or more axes of movement of the representation of the second implant component based on the representation of the first implant component.

5. The method of claim 4 wherein an axis from the one or more axes constrains a critical area between the representation of the first implant component and the representation of the second implant component.

6. The method of claim 4 wherein an axis from the one or more axes constrains a distance between the representation of the first implant component and the representation of the second implant component.

7. The method of claim 4 wherein an axis from the one or more axes is based on an arc between the representation of the first implant component and the representation of the second implant component.

8. The method of claim 4 wherein preventing comprises preventing a movement of the representation of the second component that is not a rotation around the one or more axes, a translation along the one or more axes, or any combination thereof.

9. The method of claim 4 further comprising displaying a cross-sectional display at a cross-section point along an axis from the one or more axes, wherein the cross-sectional display comprises the representation of the first implant component, the representation of the second implant component, the representation of the bone, or any combination thereof.

10. The method of claim 9 further comprising updating the cross-sectional display based on a new cross-section point along the axis.

11. The method of claim 1 wherein the at least one positioning constraint is based on a representation of an extension of an articular surface of at least one of the first implant component and the second implant component.

12. The method of claim 11 further comprising determining an overlap of the representation of the extension of the articular surface and the representation of the first implant component, the representation of the second implant component, or any combination thereof.

13. The method of claim 11 further comprising displaying the representation of the extension of the articular surface.

14. The method of claim 1 wherein displaying the representation of the second implant component comprises displaying the representation of the second implant component with respect to the representation of the bone.

15. The method of claim 14 wherein displaying the representation of the second implant component with respect to the representation of the bone further comprises displaying the representation of the second implant component based on at least one of a coordinate space of the representation of the bone or a coordinate space of the representation of the first implant component.

16. The method of claim 1 further comprising displaying a change indicator, wherein the change indicator is based on a current location of the representation of the first implant component and at least one of an original location of the representation of the first implant component, a coordinate space of the representation of the bone, a coordinate space of the representation of the first implant component, or a coordinate space of a representation of cartilage.

17. A surgical planning computerized method comprising:

displaying a representation of a bone and a representation of a first implant component with respect to the representation of the bone;

receiving data associated with a positioning of a representation of a second implant component, wherein the first implant component and the second implant component are physically separated and not connected to each other;

comparing the data associated with the positioning of the representation of the second implant component with a positioning constraint that is based on the representation of the bone, the representation of the first implant component, or both; and

displaying the representation of the second implant component in accord with the data associated with the positioning of the representation of the second implant component if the data meets the positioning constraint.

18. A surgical planning system comprising:

a computer configured to;

generate a display of a representation of a bone and a representation of a first implant component with respect to the representation of the bone;

generate a display of a representation of a second implant component, wherein the first implant component and the second implant component are physically separated and not connected to each other; and

prevent a positioning of the representation of the second implant component that violates at least one positioning constraint, wherein the positioning constraint is based on the representation of the first implant component.

19. The surgical planning system of claim 18 further comprising receiving data associated with a positioning of the representation of the second implant component.

20. The surgical planning system of claim 18 wherein the computer is further configured to generate a user interface that enables a positioning of either the representation of the first implant component, the representation of the second implant component, or any combination thereof.

21. The surgical planning system of claim 18 wherein the computer is further configured to:

calculate a plurality of areas representing cartilage; and

adjust a positioning of at least one of the representation of the first implant component and the representation of the second implant component based on at least one of the plurality of areas representing cartilage.

22. A computer program product, tangibly embodied in a computer readable medium, the computer program product including instructions being operable to cause a data processing apparatus to:

display a representation of a bone and a representation of a first implant component with respect to the representation of the bone;

display a representation of a second implant component, wherein the first implant component and the second implant component are physically separated and not connected to each other; and

prevent a positioning of the representation of the second implant component that violates at least one positioning constraint, wherein the positioning constraint is based on the representation of the first implant component.

23. A system comprising:

displaying a representation of a bone and a representation of a first implant component with respect to the representation of the bone;

displaying a representation of a second implant component, wherein the first implant component and the second implant component are physically separated and not connected to each other; and

means for preventing a positioning of the representation of the second implant component that violates at least one positioning constraint, wherein the positioning constraint is based on the representation of the first implant component.