Orthopedic joint distraction device

• US 10,321,904 B2
• Filed: 03/23/2016
• Issued: 06/18/2019
• Est. Priority Date: 03/24/2015
• Status: Active Grant

• Current Assignee: Omnilife Science, Inc. (OrthoUnited, Inc.)
• Original Assignee: Omnilife Science, Inc. (OrthoUnited, Inc.)
• Inventors: Plaskos, Christopher, Joly, Christian, Nichols, Martin Joseph, Leger, Frederic
• Primary Examiner(s): Boles, Sameh R
• Application Number:
  US15/078,954
• Publication Number:
  US 20160278754A1
• Time in Patent Office: 1,182 Days
• CPC Class Codes: A61B 17/025 Joint distractors
• CPC Class Codes: A61B 2017/00017 Electrical control of surgical instruments
• CPC Class Codes: A61B 2017/00221 with wireless transmission of data, e.g. by infrared radiation or radiowaves
• CPC Class Codes: A61B 2017/00398 using powered actuators, e.g. stepper motors, solenoids
• CPC Class Codes: A61B 2017/00725 Calibration or performance testing
• CPC Class Codes: A61B 2017/0268 for the knee
• CPC Class Codes: A61B 2034/104 Modelling the effect of the tool, e.g. the effect of an implanted prosthesis or for predicting the effect of ablation or burring
• CPC Class Codes: A61B 2034/105 Modelling of the patient, e.g. for ligaments or bones
• CPC Class Codes: A61B 2034/2055 Optical tracking systems
• CPC Class Codes: A61B 2090/061 for measuring dimensions, e.g. length
• CPC Class Codes: A61B 2090/065 for measuring contact or contact pressure
• CPC Class Codes: A61B 2090/067 for measuring angles
• CPC Class Codes: A61B 34/10 Computer-aided planning, simulation or modelling of surgical operations
• 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 90/06 Measuring instruments not otherwise provided for
• CPC Class Codes: A61F 2/38 for elbows or knees
• CPC Class Codes: A61F 2/3859 Femoral components
• CPC Class Codes: A61F 2/389 Tibial components A61F2/3868 takes precedence
• CPC Class Codes: A61F 2002/30616 Sets comprising a plurality of prosthetic parts of different sizes or orientations
• CPC Class Codes: A61F 2002/4666 for measuring force, pressure or mechanical tension
• CPC Class Codes: A61F 2002/469 : electrical
• CPC Class Codes: A61F 2002/4692 : fluid

Abstract

An orthopedic distraction device is provides. The orthopedic distraction device includes a first upper paddle for engaging a first bone of a joint, a lower paddle for engaging a second bone of the joint and a displacement mechanism. The displacement mechanism includes a drive assembly operable to move the upper paddle relative to the lower paddle. The lower paddle is releasably connected to the displacement mechanism.

Claims

1. An orthopedic distraction device comprising:

an upper paddle for engaging a first bone of a joint;

a lower paddle for engaging a second bone of the joint;

a displacement mechanism operable to displace the upper paddle relative to the lower paddle; and

a controller operatively in communication with the displacement mechanism, and configured to apply varying displacement forces to displace the upper paddle from the lower paddle based on a relative position between the first and second bones of the joint.

2. The orthopedic distraction device of claim 1, wherein the displacement mechanism includes a drive assembly to displace the upper paddle relative to the lower paddle.

3. The orthopedic distraction device of claim 1, wherein the controller is configured to apply said varying displacement forces throughout a range of motion of the joint.

4. The orthopedic distraction device of claim 1, wherein the relative position between the first and second bones define a joint angle of the joint.

5. The orthopedic distraction device of claim 1, wherein the relative position between the first and second bones define a flexion angle.

6. The orthopedic distraction device of claim 1, wherein the controller comprises a memory having stored thereon a predetermined force profile for applying said varying displacement forces.

7. The orthopedic distraction device of claim 1, wherein the force versus flexion angle profile is defined by a user and stored in the memory for determining the varying displacement forces to apply.

8. The orthopedic distraction device of claim 1, wherein the force versus flexion angle profile for determining the varying displacement forces to apply is adjustable by a user intraoperatively during surgery.

9. The orthopedic distraction device of claim 1, wherein the varying displacement forces are adjustable.

10. The orthopedic distraction device of claim 1, wherein the force versus flexion angle profile for determining the varying displacement forces to apply is adjustable by a user throughout a range of motion of the joint.

11. The orthopedic distraction device of claim 1, wherein the force versus flexion angle profile is displayed on a display.

12. The orthopedic distraction device of claim 11, wherein the force versus flexion angle profile on the display is adjustable by a user.

13. The orthopedic distraction device of claim 11, wherein the force versus flexion angle profile on the display includes node control points adjustable by a user.

14. The orthopedic distraction device of claim 1, wherein the controller is further configured to measure a gap spacing between the first and second bones of the joint upon applying said varying displacement forces and determine an implant position based off the measured gap spacing.

15. The orthopedic distraction device of claim 14, wherein the controller is configured to measure the gap spacing while the first and second bones of the joint are at about 0 or 90 degrees flexion.

16. The orthopedic distraction device of claim 1, wherein the controller is further configured to measure gap spacings between the first and second bones of the joint upon applying said varying displacement forces while the relative position of the first and second bones of the joint are substantially in an extension position, a mid-flexion position, and a substantially 90 degree flexion position, and determine an implant position based off the measured gap spacings at the extension position, the mid-flexion position, and the substantially 90 degree flexion position.

17. The orthopedic distraction device of claim 1, wherein the controller is further configured to measure a gap spacing between the first and second bones of the joint upon applying said varying displacement forces while the relative position of the first and second bones of the joint are at full extension, deep flexion or mid-flexion, and determine an implant position based off the measured gap spacing at full extension, deep flexion or mid-flexion.

18. The orthopedic distraction device of claim 1, wherein the controller is further configured to determine a predicted alignment between the first and second bones of the joint upon applying said varying displacement forces, and determine an implant position based on the predicted alignment.

19. The orthopedic distraction device of claim 18, wherein the predicted alignment is based on a mechanical axis of one of the first and second bones and a sagittal plane of the other of the first and second bones.

20. The orthopedic distraction device of claim 1, further comprising a three-dimensional position tracking system for tracking the relative position between the first and second bones of the joint.