System and method for registration in orthopaedic applications

• US 10,002,227 B2
• Filed: 10/15/2013
• Issued: 06/19/2018
• Est. Priority Date: 09/18/2012
• Status: Active Grant

• Current Assignee: Think Surgical, Inc.
• Original Assignee: Think Surgical, Inc.
• Inventors: Netravali, Nathan A., Mun, In K., Lu, Li
• Primary Examiner(s): Coley, Zade
• Assistant Examiner(s): Chang, Olivia C
• Application Number:
  US14/429,301
• Publication Number:
  US 20150220682A1
• Time in Patent Office: 1,708 Days
• 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 surface model of a bone of a patient for registering a position and orientation of the bone, the method comprising:

receiving scan data of the bone of the patient;

creating instructions based on the scan data;

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

coupling a malleable registration guide blank to the adjustable model to create a custom registration guide resembling the three-dimensional surface model of the bone; and

registering the position and orientation of the bone of the patient to a computer-assisted device by assembling the custom registration guide to a matching surface on the bone of the patient.

2. The method of claim 1, further comprising:

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

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

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