US 12,144,567 B2
Hip replacement navigation system and method
Nicholas van der Walt, Laguna Hills, CA (US); Matthew Ryan, Aliso Viejo, CA (US); and Jonathan Nielsen, Aliso Viejo, CA (US)
Assigned to OrthAlign, Inc., Irvine, CA (US)
Filed by OrthAlign, Inc., Aliso Viejo, CA (US)
Filed on Feb. 1, 2024, as Appl. No. 18/429,933.
Application 18/429,933 is a continuation of application No. 18/299,996, filed on Apr. 13, 2023, granted, now 11,911,119.
Application 18/299,996 is a continuation of application No. 16/794,827, filed on Feb. 19, 2020, granted, now 11,653,981, issued on May 23, 2023.
Application 16/794,827 is a continuation of application No. 15/474,037, filed on Mar. 30, 2017, granted, now 10,603,115, issued on Mar. 31, 2020.
Application 15/474,037 is a continuation of application No. 13/800,620, filed on Mar. 13, 2013, granted, now 9,649,160, issued on May 16, 2017.
Claims priority of provisional application 61/761,617, filed on Feb. 6, 2013.
Claims priority of provisional application 61/683,167, filed on Aug. 14, 2012.
Prior Publication US 2024/0197406 A1, Jun. 20, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. A61B 34/20 (2016.01); A61B 17/17 (2006.01); A61B 90/10 (2016.01); A61F 2/46 (2006.01); A61F 2/30 (2006.01); A61F 2/34 (2006.01)
CPC A61B 34/20 (2016.02) [A61B 17/1746 (2013.01); A61B 90/10 (2016.02); A61F 2/4609 (2013.01); A61F 2/4657 (2013.01); A61B 2034/2048 (2016.02); A61B 2034/2068 (2016.02); A61F 2/30942 (2013.01); A61F 2/34 (2013.01); A61F 2002/4687 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A navigation system comprising:
an anchor portion configured to couple to a pelvis of a patient, wherein the anchor portion comprises two pins;
a support platform configured to couple to the anchor portion, wherein the anchor portion and the support platform are separable such that the support platform is configured to be coupled the anchor portion after the anchor portion is coupled the pelvis of the patient; and
an orientation sensing device configured to couple to the support platform, wherein the support platform and the orientation sensing device are separable such that the orientation sensing device is configured to be coupled to the support platform after the support platform is coupled the anchor portion,
wherein the orientation sensing device comprises at least one accelerometer and at least one gyroscope, the orientation sensing device configured to generate angular measurements based on outputs from the at least one accelerometer and at least one gyroscope, wherein the angular measurements comprise an inclination angle and an anteversion angle,
wherein the orientation sensing device stores a pelvic coordinate system and determines the inclination angle and the anteversion angle relative to the pelvic coordinate system.