Patient-specific surgical method and system

Patent metadata

Field	Value
Publication number	US-12402947-B2
Application number	US-201917269091-A
Country	US
Kind code	B2
Filing date	Aug 19, 2019
Priority date	Aug 17, 2018
Publication date	Sep 2, 2025
Grant date	Sep 2, 2025

Abstract

A method of determining patient-specific implant parameters for an implant used in a surgical procedure is described. A surgical system receives one or more initial transfer functions and one or more preoperative input factors for a patient and generates a surgical plan comprising one or more patient-specific implant parameters based on the one or more initial transfer functions and the one or more preoperative input factors for the patient. The surgical system further receives one or more intraoperative input factors for the patient and updates the one or more patient-specific implant parameters based on the one or more intraoperative input factors for the patient. An implant for the patient is selected based on the one or more updated patient-specific implant parameters.

First claim

What is claimed is:

1. A method of performing a surgical procedure, the method comprising:
receiving, by a surgical system, one or more preoperative input factors for a patient;
generating, by the surgical system, a three-dimensional virtual model of a knee of the patient;
simulating, by the surgical system, the three-dimensional virtual model of the knee of the patient to perform one or more movements;
generating, based on a statistical analysis of one or more simulation results, one or more initial transfer functions describing one or more patient-specific relationships between the one or more preoperative input factors and one or more orthopedic responses;
generating, by the surgical system, a surgical plan based on the one or more initial transfer functions and the one or more preoperative input factors for the patient, wherein the surgical plan comprises one or more patient-specific implant parameters;
receiving, by the surgical system, one or more intraoperative input factors for the patient;
updating, by the surgical system, the one or more initial transfer functions based on the one or more intraoperative input factors for the patient;
selecting an implant for the patient based on one or more updated transfer functions;
reconfiguring, by the surgical system, the surgical plan based on the selected implant and the one or more updated transfer functions; and
controlling, by the surgical system, a robotically assisted surgical tool based on the reconfigured surgical plan.

2. The method of claim 1 , wherein the one or more preoperative input factors comprise biometric data, radiographic assessment information, activity or fitness level, health or injury history, or combinations thereof.

3. The method of claim 1 , wherein the one or more intraoperative input factors comprise landmark locations, femur or tibia surface mapping data, joint laxity data, joint loading data, or combinations thereof.

4. The method of claim 1 , further comprising: receiving, by the surgical system, one or more surgical input factors for the surgical procedure; and wherein generating the surgical plan is further based on the one or more surgical input factors.

5. The method of claim 4 , wherein the one or more surgical input factors comprise implant component size, implant component position or orientation, soft tissue release information, or combinations thereof.

6. The method of claim 4 , further comprising:
receiving, by the surgical system, one or more postoperative input factors for the patient;
uploading, to a database, the preoperative input factors, surgical input factors, intraoperative input factors, postoperative input factors, or combinations thereof; and
refining the one or more initial transfer functions for future patients based on the uploaded input factors.

7. The method of claim 6 , wherein the one or more postoperative input factors comprise final implant position or orientation information, patient satisfaction information, patient gait, final range of motion, recovery time, implant survivorship, or combinations thereof.

8. The method of claim 6 , wherein refining the one or more initial transfer functions comprises utilizing machine learning techniques.

9. The method of claim 6 , wherein the database comprises input factors from a plurality of patients.

10. The method of claim 1 , further comprising:
uploading, to a database, the preoperative input factors, intraoperative input factors, or combinations thereof; and
refining the one or more initial transfer functions for future patients based on the uploaded input factors.

11. The method of claim 1 , further comprising altering, by a surgeon, a first patient-specific implant parameter of the one or more patient-specific implant parameters.

12. The method of claim 11 , further comprising updating, by the surgical system, a second patient-specific implant parameter of the one or more patient-specific implant parameters based on the first patient-specific implant parameter.

13. The method of claim 1 , wherein the one or more movements comprise one or more load regimes, one or more movement cycles, one or more bending cycles, or combinations thereof.

14. The method of claim 1 , wherein the one or more intraoperative input factors comprises input received from a surgeon.

15. The method of claim 1 , wherein the surgical procedure is total knee arthroplasty.

16. The method of claim 1 , wherein determining one or more patient-specific relationships between the one or more preoperative input factors and one or more orthopedic responses comprises performing the statistical analysis for each of the one or more orthopedic responses.

17. The method of claim 16 , wherein the one or more orthopedic responses comprise at least one of simulated tissue strains, simulated forces/stresses, kinematics, and soft tissue balance responses.

Assignees

• Smith & Nephew Inc
• Smith & Nephew Asia Pacific Pte Ltd
• Smith & Nephew Orthopaedics Ag

Inventors

• Farley Daniel
• Mcguan Shawn
• Jaramaz Branislav
• Mckinnon Brian W
• Nikou Constantinos
• Duxbury Elizabeth
• Marinescu Tanasoca Ruxandra C
• Landon Ryan
• Winebarger Randy C
• Bowers Jr William L

Classifications

• A61F2/30942

  for designing or making customized prostheses, e.g. using templates, CT or NMR scans, finite-element analysis or CAD-CAM techniques · CPC title

• G16H20/40 Primary

  relating to mechanical, radiation or invasive therapies, e.g. surgery, laser therapy, dialysis or acupuncture · CPC title

• A61B34/30

  Surgical robots · CPC title

• A61B34/25

  User interfaces for surgical systems · CPC title

• A61B34/20

  Surgical navigation systems; Devices for tracking or guiding surgical instruments, e.g. for frameless stereotaxis · CPC title