SYSTEMS AND METHODS FOR JOINT REPLACEMENT

• US 20170238946A1
• Filed: 01/10/2017
• Published: 08/24/2017
• Est. Priority Date: 07/24/2008
• Status: Active Grant

• Current Assignee: Orthalign, Inc.
• Original Assignee: Orthalign, Inc.
• Inventors: van der Walt, Nicholas, Borja, Santiago P.
• Granted Patent: US 9,855,075 B2
• Time in Patent Office: Days
• CPC Class Codes: A61B 17/154 for preparing bone for knee prosthesis
• CPC Class Codes: A61B 17/155 Cutting femur
• CPC Class Codes: A61B 17/157 Cutting tibia
• CPC Class Codes: A61B 17/1707 using electromagnetic effects, e.g. with magnet and external sensors
• CPC Class Codes: A61B 17/1764 for the knee
• CPC Class Codes: A61B 17/7017 pneumatic or hydraulic means
• CPC Class Codes: A61B 2034/2048 using an accelerometer or inertia sensor
• CPC Class Codes: A61B 2090/067 for measuring angles
• CPC Class Codes: A61B 34/20 Surgical navigation systems; Devices for tracking or guiding surgical instruments, e.g. for frameless stereotaxis
• CPC Class Codes: A61B 34/25 User interfaces for surgical systems

Abstract

Systems and methods for joint replacement are provided. The systems and methods include a surgical orientation device and at least one orthopedic fixture. The surgical orientation device and orthopedic fixtures can be used to locate the orientation of an axis in the body, to adjust an orientation of a cutting plane or planes along a bony surface, to distract a joint, or to otherwise assist in an orthopedic procedure or procedures.

Claims

1. (canceled)

2. A method of performing an orthopedic procedure, comprising:

coupling a base member to a bone;

coupling a portable surgical orientation device to at least one adjustment device coupled to the base, the portable surgical orientation device comprising an inertial sensor;

moving and/or swinging an extremity of the patient or the portable surgical orientation device, wherein the inertial sensor monitors the orientation of the portable surgical orientation device in a three-dimensional coordinate reference system upon moving and/or swinging the extremity of the patient or the portable surgical orientation device; and

wherein the system determines a center of rotation of a joint and/or a mechanical axis of a bone based on data produced by the inertial sensor.

3. The method of claim 2, further comprising referencing a plurality of points.

4. The method of claim 2, further comprising rotating a first adjustment device in a varus/valgus direction relative to the base member, and rotating a second adjustment device in a posterior/anterior direction relative to the base member.

5. The method of claim 2, further comprising coupling a cutting guide with an anterior/posterior adjustment block.

6. The method of claim 2, further comprising informing a user with an output device of the orientation of the portable surgical device relative to a reference plane corresponding to the mechanical axis of the leg.

7. The method of claim 2, further comprising providing a graphical user interface having an interactive window displaying on-screen graphics for a user.

8. The method of claim 2, further comprising detecting with a second sensor changes in movement of the tibia and/or leg during a knee replacement procedure.

9. The method of claim 2, wherein the portable surgical orientation device comprises a display in or on a housing that encloses the inertial sensor.

10. The method of claim 2, wherein the portable surgical orientation device comprises a visible output device.

11. A method of performing an orthopedic procedure, comprising:

coupling a fixture to a bone;

coupling a portable surgical orientation device to the fixture, the portable surgical orientation device comprising an inertial sensor;

moving an extremity of the patient, wherein the inertial sensor monitors the orientation of the portable surgical orientation device upon moving the extremity of the patient; and

wherein the system determines a mechanical axis of a bone based on data produced by the inertial sensor.

12. The method of claim 11, further comprising coupling a cutting guide to the fixture.

13. The method of claim 11, wherein coupling the fixture to the bone further comprises coupling the fixture to a distal portion of a femur.

14. The method of claim 11, wherein the portable surgical orientation device comprises a visible output comprising one or more lights.

15. The method of claim 11, wherein the portable surgical orientation device comprises a button.

16. The method of claim 11, wherein the portable surgical orientation device comprises a gyroscope.

17. The method of claim 11, wherein moving an extremity of the patient comprises moving the extremity in a horizontal plane.

18. The method of claim 11, further comprising displaying an angle for resection.

19. The method of claim 11, further comprising displaying information on a display of the portable surgical orientation device.

20. A method of performing an orthopedic procedure, comprising:

coupling a base to a bone;

coupling a portable surgical orientation device to the base, the portable surgical orientation device comprising an inertial sensor;

moving and/or swinging an extremity of the patient or the portable surgical orientation device, wherein the inertial sensor monitors the orientation of the portable surgical orientation device upon moving and/or swinging the extremity of the patient or the portable surgical orientation device; and

displaying an angle for resection on a graphical user interface.

21. The method of claim 20, wherein displaying the angle for resection on the graphical user interface further comprising displaying a posterior/anterior angle for resection.

22. The method of claim 20, wherein displaying the angle for resection on the graphical user interface further comprising displaying a varus/valgus angle for resection.

23. The method of claim 20, wherein the portable surgical orientation device comprises the graphical user interface.

24. The method of claim 20, further comprising interacting with a touchscreen display.