Preoperative planning and associated intraoperative registration for a surgical system

US11229485B2 · kind B2 · utility

Assignee

• MAKO Surgical Corp. · US

Inventors

• Jason Otto · Sunrise, US
• Abdullah Abbasi · San Diego, US
• Milan Ikits · Sunnyvale, US
• Daniel Perez · Sunrise, US
• Shang Mu · Princeton, US
• Xiping Li · Weston, US
• Ta-Cheng Chang · Weston, US

Key dates

• Filing date: Jun 10, 2019
• Grant date: Jan 25, 2022
• Expiry date: Mar 13, 2040

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61F2002/4662
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

Aspects of the disclosure may involve a method of generating resection plane data for use in planning an arthroplasty procedure on a patient bone. The method may include: obtaining patient data associated with at least a portion of the patient bone, the patient data captured using a medical imaging machine; generating a three-dimensional patient bone model from the patient data, the patient bone model including a polygonal surface mesh; identifying a location of a posterior point on the polygonal surface mesh; creating a three-dimensional shape centered at or near the location; identifying a most posterior vertex of all vertices of the polygonal surface mesh that may be enclosed by the three-dimensional shape; using the most posterior vertex as a factor for determining a posterior resection depth; and generating resection data using the posterior resection depth, the resection data configured to be utilized by a navigation system during the arthroplasty procedure.