Systems and methods for joint replacement

• US 10,206,714 B2
• Filed: 10/26/2017
• Issued: 02/19/2019
• 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.
• Primary Examiner(s): Boles, Sameh
• Application Number:
  US15/794,351
• Publication Number:
  US 20180153587A1
• Time in Patent Office: 481 Days
• Field of Search: None
• 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. An orthopedic system comprising:

a base member configured to couple to a bone;

at least one adjustment device coupled to and moveable relative to the base member in at least one degree of freedom;

a portable surgical orientation device coupled or configured to couple to the at least one adjustment device, the portable surgical orientation device comprising;

a housing,

an inertial sensor configured to monitor the orientation of the portable surgical orientation device in a reference system upon movement of the portable surgical orientation device,

an electronic control unit configured to receive an input from the inertial sensor, perform calculations based on the input, and transmit an output based on the calculations, and

a user interface comprising a display, the user interface configured to illustrate the output as a user-readable graphic on the display.

2. The system of claim 1, wherein the base member is a tibial baseplate.

3. The system of claim 1, wherein the orthopedic system is a knee distraction device.

4. The system of claim 1, wherein the orthopedic system is configured to distract a knee joint during a knee replacement procedure.

5. The system of claim 1, further comprising a femoral resection guide.

6. The system of claim 1, wherein the at least one adjustment device is coupled or configured to couple to a femoral baseplate.

7. The system of claim 1, wherein the at least one adjustment device comprises a rack and pinion.

8. The system of claim 1, further comprising a femoral baseplate configured to rotate relative to the base member.

9. The system of claim 1, wherein the portable surgical orientation device is configured to measure and display tension within the soft tissue.

10. An orthopedic system comprising:

a base member configured to couple to a bone;

at least one adjustment device coupled to and moveable relative to the base member in at least one degree of freedom;

a portable surgical orientation device coupled or configured to couple to the at least one adjustment device, the portable surgical orientation device comprising;

a housing,

an inertial sensor configured to monitor the orientation of the portable surgical orientation device as the portable surgical orientation device changes orientation,

an electronic control unit configured to perform one or more calculations based upon data produced by the inertial sensor, and

a user interface comprising a display, wherein the portable surgical orientation device is configured to provide a reading on the display indicating the orientation of the portable surgical orientation device.

11. The system of claim 10, wherein the base member comprises a first baseplate.

12. The system of claim 11, further comprising a second baseplate.

13. The system of claim 12, wherein the first baseplate and the second baseplate are configured to allow rotation between the first baseplate and the second baseplate.

14. The system of claim 10, wherein the at least one adjustment device is configured to apply a distraction force.

15. The system of claim 10, further comprising a resection guide.

16. An orthopedic system comprising:

a base member configured to couple to a bone;

at least one adjustment device coupled to and moveable relative to the base member in at least one degree of freedom;

a portable surgical orientation device coupled or configured to couple to the at least one adjustment device, the portable surgical orientation device comprising;

a housing,

an inertial sensor configured to provide an output related to a position or an orientation of the portable surgical orientation device,

an electronic control unit configured to perform one or more calculations based the output of the inertial sensor to determine, estimate, and/or calculate the position or the orientation of the portable surgical orientation device, and

a user interface comprising a screen, wherein the screen is configured to provide feedback to a user related to the position or the orientation of the portable surgical orientation device during a surgical procedure.

17. The system of claim 16, wherein the surgical procedure comprises distraction of a joint.

18. The system of claim 16, wherein the surgical procedure is a resection.

19. The system of claim 16, wherein the orthopedic system is configured to facilitate soft tissue balancing.

20. The system of claim 16, further comprising a resection guide for a posterior femoral cut.