Granted Patent B2

US 12,239,384 · App. 18/054,653 · Granted Mar 4, 2025

Inventors: Laurent Angibaud (Gainesville, FL); Cyril Hamad (Meylan, FR)

Assignee: Exactech, Inc.

A61B34/10A61B34/25A61B2034/102A61B2034/105A61B2034/107A61B2034/252A61B2034/256A61B2034/258

Abstract

Claims (80)

1. A method, comprising:

obtaining a patient-specific post-surgery desired functional profile of a joint of a patient after a surgical procedure of an implantation of an implant;

wherein the joint comprises a first bone member and a second bone member;

wherein the patient-specific post-surgery desired functional profile comprises at least one functional parameter value for at least one functional parameter representative of an expected functional performance of the joint after the implantation;

obtaining a surgeon-specific surgery profile of a surgeon;

wherein the surgeon-specific surgery profile comprises a plurality of ranges of surgeon-specific surgery guidance values for each of a plurality of surgical parameters for the implantation of at least one part of the implant chosen from a plurality of implants;

wherein the plurality of surgical parameters comprises:

at least one resection associated with at least one of the first bone member or the second bone member,

at least one position of at least one of the first bone member or the second bone member within the joint,

an alignment angle of at least one of the first bone member or the second bone member,

a flexion angle of at least one of the first bone member or the second bone member, or

an axial rotation angle of at least one of the first bone member or the second bone member;

wherein the plurality of ranges of the surgeon-specific surgery guidance values comprises:

a first range of surgeon-specific surgery guidance values for the at least one resection associated with at least one of the first bone member or the second bone member,

a second range of surgeon-specific surgery guidance values for the at least one position of at least one part of at least one of the first bone member or the second bone member within the joint,

a third range of surgeon-specific surgery guidance values for the alignment angle of at least one of the first bone member or the second bone member,

a fourth range of surgeon-specific surgery guidance values for the flexion angle of at least one of the first bone member or the second bone member, or

a fifth range of surgeon-specific surgery guidance values for the axial rotation angle of at least one of the first bone member or the second bone member;

wherein the plurality of ranges of the surgeon-specific surgery guidance values for each of the plurality of surgical parameters comprises an acceptable range in each of the plurality of ranges of the surgeon-specific surgery guidance values;

cutting the first bone member during the surgical procedure;

placing a distractor between the first bone member and the second bone member to apply, during at least one movement, a distraction force between the first bone member and the second bone member;

obtaining bone registration data for the first bone member of the patient and the second bone member of the patient;

obtaining, based on the bone registration data, a first bone member representation of the first bone member and a second bone member representation of the second bone member within at least one coordinate system;

obtaining, during the surgical procedure, patient-specific movement-related data after the first bone member of the joint, the second bone member of the joint, or both, have been put through the at least one movement when the distraction force is applied, between the first bone member and the second bone member, throughout a continuous range of motions;

wherein the patient-specific movement-related data represents a plurality of spatial poses of at least one first feature associated with the first bone member, at least one second feature associated with the second bone member, at least one third feature associated with the joint, or any combination thereof;

obtaining, from the patient-specific movement-related data, a personalized flexion angle of the joint;

obtaining a patient-specific surgeon-specific surgical plan based on a plurality of inputs into a surgical plan model;

wherein the patient-specific surgeon-specific surgical plan comprises an estimated patient-specific surgeon-specific value for each of the plurality of surgical parameters;

wherein the plurality of inputs comprises:

the plurality of ranges of the surgeon-specific surgery guidance values for each of the plurality of surgical parameters,

the at least one functional parameter value for the at least one functional parameter representative of the expected functional performance of the joint after the implantation,

the first and the second bone member representations,

the personalized flexion angle of the joint, and

the patient-specific movement-related data;

wherein the surgical plan model is designed to:

achieve the patient-specific post-surgery desired functional profile based at least in part on a plurality of dependencies between:

the plurality of surgical parameters,

the at least one functional parameter representative of the expected functional performance of the joint,

the personalized flexion angle of the joint, and

the patient-specific movement-related data, and

determine the estimated patient-specific surgeon-specific value for each of the plurality of surgical parameters in a compensated set of surgical cut parameters from the plurality of surgical parameters, compensated by the personalized flexion angle of the joint, to consider during the surgical procedure;

obtaining the estimated patient-specific surgeon-specific value for each of the plurality of surgical parameters in the compensated set of surgical cut parameters of the patient-specific surgeon-specific surgical plan from at least one interactive graphical user interface (GUI) on a surgery assistant device; and

cutting the second bone member at the joint based on the estimated patient-specific surgeon-specific values in the compensated set of surgical cut parameters of the patient-specific surgeon-specific surgical plan, compensated by the personalized flexion angle of the joint, to consider during the surgical procedure.

2. The method according to claim 1 , wherein the estimated patient-specific surgeon-specific value for each of the plurality of surgical parameters is within each of the plurality of ranges of the surgeon-specific surgery guidance values for each corresponding surgical parameter in the plurality of surgical parameters.

3. The method according to claim 1 , wherein the plurality of surgical parameters comprises at least one first cut parameter at a particular position, orientation, or both, on the first bone member, at least one second cut parameter at a particular position, orientation, or both, on the second bone member, or any combination thereof.

4. The method according to claim 1 , wherein the plurality of ranges of the surgeon-specific surgery guidance values for each of the plurality of surgical parameters comprises a preferred range in each of the plurality of ranges of the surgeon-specific surgery guidance values.

5. The method according to claim 1 , wherein the obtaining from the at least one interactive GUI, a GUI output for each of the plurality of surgical parameters;

wherein the GUI output comprises manufacturer limits associated with the implant, the acceptable range in each of the plurality of ranges of the surgeon-specific surgery guidance values, a preferred range in each of the plurality of ranges of the surgeon-specific surgery guidance values, and the estimated patient-specific surgeon-specific value.

6. The method according to claim 1 , further comprising:

obtaining a patient-specific profile;

wherein the patient-specific profile comprises a plurality of patient-specific values for a plurality of patient-specific parameters;

obtaining a healthcare-specific profile;

wherein the healthcare-specific profile comprises a plurality of healthcare-specific values for a plurality of healthcare-specific parameters;

wherein the obtaining of the patient-specific surgeon-specific surgical plan is based on an inputting of the plurality of patient-specific values for the plurality of patient-specific parameters and the plurality of healthcare-specific values for the plurality of healthcare-specific parameters into the surgical plan model; and

wherein the surgical plan model is further designed to achieve the patient-specific post-surgery desired functional profile based at least in part on the plurality of dependencies between:

the plurality of patient-specific parameters,

the plurality of healthcare-specific parameters,

the plurality of surgical parameters,

the at least one functional parameter representative of the expected functional performance of the joint,

the personalized flexion angle of the joint, and

the patient-specific movement-related data.

7. The method according to claim 1 , wherein the joint is a knee joint; and

wherein the at least one functional parameter comprises a medial gap in extension, a medial gap in flexion at 90 degrees, a lateral gap in extension, a lateral gap in flexion at 90 degrees, a gap tolerance, or any combination thereof.

8. The method according to claim 1 , wherein the obtaining of the patient-specific post-surgery desired functional profile of the joint comprises obtaining the patient-specific post-surgery desired functional profile of the joint based on a patient-specific post-operative desired lifestyle constraint.

9. The method according to claim 8 , wherein the patient-specific post-operative desired lifestyle constraint is selected from the group consisting of: a desired participation in a particular sport, a desired comfort level, a desired range of motion, and a desired longevity.

10. The method according to claim 1 , wherein the joint is a knee joint.

11. The method according to claim 10 , wherein the compensated set of surgical cut parameters from the plurality of surgical parameters comprises:

a medial distal femoral resection,

a lateral distal femoral resection,

a medial posterior femoral resection,

a lateral posterior femoral resection,

a femoral anteroposterior (AP) position,

a femoral alignment angle,

a femoral flexion angle, and

a femoral axial rotation angle.

12. The method according to claim 1 , wherein the at least one interactive GUI comprises a plurality of interactive GUI interface elements that are programmed to allow an adjustment of the estimated patient-specific surgeon-specific value for at least one surgical parameter from the plurality of surgical parameters displayed on the at least one interactive GUI.

13. The method according to claim 12 , further comprising:

adjusting any of the plurality of interactive GUI interface elements to change at least one displayed patient-specific surgeon-specific value for the at least one surgical parameter of the plurality of surgical parameters;

obtaining, based on the surgical plan model and the adjusting, the estimated patient-specific surgeon-specific value for each of the plurality of surgical parameters in response to the change in the at least one displayed patient-specific surgeon-specific value for the at least one surgical parameter; and

obtaining on the at least one interactive GUI, a real-time update of each of the plurality of interactive GUI interface elements corresponding to the estimated patient-specific surgeon-specific value for each of the plurality of surgical parameters in response to the adjusting.

Assignments (3)

Continuity (4)

References Cited (17)

Cited By (1)

US 12,502,285