IP Library › Granted Patent US 12,376,972
Granted Patent B2
US 12,376,972 · App. 17/244,101 · Granted Aug 5, 2025

Hip replacement navigation system and method

Inventors: Nicholas van der Walt (Laguna Hills, CA); Jonathan Nielsen (Aliso Viejo, CA)
Assignee: OrthAlign, Inc.
A61F2/4657A61B17/1746A61B34/20A61F2/4684A61B2017/00477A61B2017/568A61B2034/2048A61B2034/2068A61B2090/061A61B2090/067A61B2090/0811A61B90/30A61F2/34A61F2/3601A61F2/4609A61F2002/4658A61F2002/4668A61F2002/4681
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Quick Facts
Patent No.
US 12,376,972
App. No.
17/244,101
Granted
Aug 5, 2025
Kind
B2
Abstract

A hip joint navigation system is provided that includes a base having at least one channel disposed therethrough for receiving a pin for mounting the base to the pelvis. A mount feature is disposed on a top surface. A registration jig is configured to couple with the base and to engage anatomical landmarks. In some aspects, a patient specific jig system for hip replacement is provided including an engagement surface formed to closely mate to acetabular bone contours of a specific patient and a registration feature configured to be in a pre-determined orientation relative to an acetabulum the patient when the jig is coupled with acetabular bone contours of the specific patient. In other aspects, methods of using the systems are provided.

Claims (38)

1. A hip procedure navigation system, comprising:

a first pin configured to be driven into a pelvic bone of a patient,

a second pin configured to be driven into the pelvic bone of the patient,

a fixation base comprising a first channel configured to receive the first pin and a second channel configured to receive the second pin, wherein the fixation base is configured to slide along the first pin received within the first channel and the second pin received within the second channel,

a threaded fixation device configured to be rotated to secure the fixation base to the first pin and the second pin, wherein the first channel and the second channel extend in a direction traverse to the direction of the threaded fixation device,

a navigation device configured to be removably coupled to the fixation base, wherein the navigation device comprises at least one inertial sensor,

wherein the at least one inertial sensor is configured to determine cup inclination and anteversion angles, wherein a display provides an indication of the cup inclination and anteversion angles.

2. The hip procedure navigation system of claim 1 , further comprising an impactor.

3. The hip procedure navigation system of claim 1 , wherein the cup inclination and anteversion angles are determined relative to a horizontal plane.

4. The hip procedure navigation system of claim 1 , wherein the cup inclination and anteversion angles are determined relative to a vertical plane.

5. The hip procedure navigation system of claim 1 , wherein the fixation base is configured to be rigidly connected to the pelvic bone of the patient so that motion of the pelvic bone cause corresponding motion of the at least one inertial sensor.

6. The hip procedure navigation system of claim 1 , wherein the navigation device extends above the fixation base when coupled to the fixation base.

7. The hip procedure navigation system of claim 1 , wherein the threaded fixation device is transverse to the first pin and the second pin.

8. A hip procedure navigation system, comprising:

a first pin configured to be driven into a pelvic bone of a patient,

a second pin configured to be driven into the pelvic bone of the patient,

a fixation base comprising a first channel configured to receive the first pin and a second channel configured to receive the second pin, wherein the fixation base is configured to slide along the first pin and the second pin,

a threaded fixation device configured to be rotated to decrease a transverse distance of the first channel and decrease a transverse distance of the second channel to secure the fixation base to the first pin and the second pin,

a navigation device configured to be removably coupled to the fixation base, wherein the navigation device comprises at least one inertial sensor, wherein the at least one inertial sensor is configured to determine cup inclination and anteversion angles,

wherein navigation device is configured to repeatedly moved between the fixation base and an impactor.

9. The hip procedure navigation system of claim 8 , further comprising the impactor.

10. The hip procedure navigation system of claim 8 , wherein the navigation system is configured to generate, in real time, the cup inclination and anteversion angles.

11. The hip procedure navigation system of claim 8 , wherein the cup inclination and anteversion angles are determined relative to a horizontal plane.

12. The hip procedure navigation system of claim 8 , wherein the cup inclination and anteversion angles are determined relative to a vertical plane.

13. The hip procedure navigation system of claim 8 , wherein the navigation device is configured to remain on the impactor as the impactor is struck.

14. The hip procedure navigation system of claim 8 , wherein the threaded fixation device is transverse to the first pin and the second pin.

15. A hip procedure navigation system, comprising:

a first pin configured to be driven into a pelvic bone of a patient,

a second pin configured to be driven into the pelvic bone of the patient,

a fixation base configured to slide along the first pin and the second pin,

a threaded fixation device configured to be rotated to secure the fixation base to the first pin and the second pin, wherein the threaded fixation device is transverse to the first pin and the second pin,

a navigation device configured to be removably coupled to the fixation base, wherein the navigation device comprises at least one inertial sensor,

wherein the at least one inertial sensor is configured to determine cup inclination and anteversion angles relative to a reference plane.

16. The hip procedure navigation system of claim 15 , further comprising an impactor.

17. The hip procedure navigation system of claim 15 , wherein the cup inclination and anteversion angles are determined relative to a horizontal plane.

18. The hip procedure navigation system of claim 15 , wherein the cup inclination and anteversion angles are determined relative to a vertical plane.

19. The hip procedure navigation system of claim 15 , wherein the fixation base comprises threaded hole to engage the threaded fixation device.

20. The hip procedure navigation system of claim 8 , wherein the fixation base comprises threaded hole to engage the threaded fixation device.

Assignments (2)
SECURITY INTEREST Recorded May 23, 2024
From: ORTHALIGN, INC.
To: CRG SERVICING LLC
Reel/Frame 067528/0069 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 6, 2021
From: VAN DER WALT, NICHOLAS; NIELSEN, JONATHAN
To: ORTHALIGN, INC.
Reel/Frame 056767/0307 →
Continuity (4)
Continuation 15550564
Continuation In Part 14643864 · Mar 10, 2015
Provisional Application 62118987 · Feb 20, 2015
Related Publication 20210315716A1 · Oct 14, 2021
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