SYSTEM AND METHOD FOR REGISTRATION IN ORTHOPAEDIC APPLICATIONS

• US 20150220682A1
• Filed: 10/15/2013
• Published: 08/06/2015
• Est. Priority Date: 09/18/2012
• Status: Active Grant

• Current Assignee: Think Surgical, Inc.
• Original Assignee: Curexo Technology Corporation
• Inventors: Mun, In K., Netravali, Nathan A., Lu, Li
• Granted Patent: US 10,002,227 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: A61B 17/15 Guides therefor arrangements for guiding straight saw blades in general B23D51/025
• CPC Class Codes: A61B 2017/00526 Methods of manufacturing
• CPC Class Codes: A61B 2034/105 Modelling of the patient, e.g. for ligaments or bones
• CPC Class Codes: A61B 2034/108 Computer aided selection or customisation of medical implants or cutting guides
• CPC Class Codes: A61B 2034/2051 Electromagnetic tracking systems
• CPC Class Codes: A61B 2034/2055 Optical tracking systems
• CPC Class Codes: A61B 2090/363 Use of fiducial points
• CPC Class Codes: A61B 2090/3983 Reference marker arrangements for use with image guided surgery
• CPC Class Codes: A61B 34/10 Computer-aided planning, simulation or modelling of surgical operations
• CPC Class Codes: A61B 6/032 Transmission computed tomography [CT]
• CPC Class Codes: A61B 6/505 for diagnosis of bone
• CPC Class Codes: G05B 2219/49025 By positioning plurality of rods, pins to form together a mold, maquette
• CPC Class Codes: G06T 17/00 Three dimensional [3D] modelling, e.g. data description of 3D objects
• CPC Class Codes: G06T 2200/08 involving all processing steps from image acquisition to 3D model generation
• CPC Class Codes: G06T 2210/41 Medical
• CPC Class Codes: G16B 5/00 ICT specially adapted for modelling or simulations in systems biology, e.g. gene-regulatory networks, protein interaction networks or metabolic networks

Abstract

Described herein are systems and methods for creating a custom registration guide. In general, the methods may include receiving scan data of a patient'"'"'s bone; creating instructions based on the scan data for creating a three-dimensional surface model of the patient'"'"'s bone; and moving a plurality of moveable elements, coupled to the adjustable model, based on the instructions. The method may further include the steps of placing a malleable registration guide onto the adjustable model and shaping the registration guide to fit to the adjustable model. The method may further include the step of intraoperatively determining the location of a patient'"'"'s bone using the custom registration guide. The step of determining the location of the patient'"'"'s bone may include the steps of coupling the registration guide and fiducial markers to the patient'"'"'s bone.

Claims

1. A method for creating a three,-dimensional model of a bone of a patient, the method comprising:

receiving scan data of the bone of the patient;

creating instructions based on the scan data; and

moving a plurality of moveable elements, coupled to an adjustable model, based on the instructions for creating a three-dimensional surface model of the bone of the patient.

4. The method of claim 1, further comprising locking the moveable elements into position.

2. The method of claim I, further comprising:

creating a virtual three-dimensional model of the bone of the patient.

3. The method of claim 2, wherein creating instructions further comprises creating instructions based on the three-dimensional model of the bone of the patient for creating a three-dimensional surface model of the bone of the patient.

5. A method for creating a custom registration guide a bone of a patient, the method comprising:

placing a malleable registration guide onto an adjustable model; and

shaping the registration guide to fit to the adjustable model to create the custom registration guide.

6. The method of claim 5 further comprising coupling the shaped registration guide and a set of fiducial markers to the bone of the patient.

7. The method of claim 6, further comprising immobilizing the registration guide with respect to the bone.

8. The method of claim 5, further comprising:

receiving scan data of the bone of the patient;

creating instructions based on the scan data for creating a three-dimensional surface model of the bone of the patient; and

moving a plurality of moveable elements, coupled to the adjustable model, based on the instructions.

9. The method of claim 8, further comprising creating a virtual three-dimensional model of the bone of the patient.

10. The method of claim 9, wherein the step of creating instructions further comprises creating instructions based on the three-dimensional model of the bone of the patient for creating a three-dimensional surface model of the bone of the patient.

11. The method of claim 8, further comprising the step of locking the moveable elements into position.

12. A method for intraoperatively determining the location of bone of the patient, the method comprising:

determining intraoperatively the location of fiducial markers coupled to the bone of the patient and/or to a registration guide;

determining the location of the registration guide with respect to the fiducial markers; and

determining the location of the patient'"'"'s bone with respect to the registration guide.

13. The method of claim 12, further comprising coupling the registration guide and fiducial markers to the bone of the patient.

14. The method of claim 12, further comprising the step of performing a surgical procedure on the bone of the patient.

15. A system for creating a three-dimensional model of a bone of a patient, the system comprising:

a processor configured to receive patient scan data and to transform said patient scan data into adjustable model instructions; and

a machine, coupled to an adjustable model having a plurality of moveable elements, configured to receive the adjustable model instructions and to move a number of the moveable elements to create the three-dimensional model of the bone.

16. The system of claim 15, wherein the processor is further configured to transform the patient scan data into a three-dimensional virtual model and create the adjustable model instructions based on the three-dimensional virtual model.

17. The system of claim 16, further comprising software that generates instructions for computer-controlled tool paths to machine the patient a specific registration guide in a tool path data file.

18. The system of claim 15, further comprising a malleable registration guide blank configured to couple to the adjustable model and to be shaped to fit the adjustable model.

19. The system of claim 18, wherein the malleable registration guide blank is shaped into a shaped custom registration guide that is configured to fit to the patient'"'"'s bone in a unique way.

20. A system for intraoperatively determining the location of a bone of a patient, the system comprising:

a digitizer configured to determine intraoperatively the location of the fiducial markers; and

a processor, coupled to the digitizer, and configured to determine the location of the registration guide with respect to the fiducial markers and to determine the location of the patient'"'"'s bone with respect to the registration guide.