US 12,446,799 B2
Method and device for measuring anatomical movement of a joint
Kah Weng Lai, Singapore (SG); Gim Song Soh, Singapore (SG); Mian Yi Tan, Singapore (SG); Yu Feng Zhou, Singapore (SG); and Dinesh Kumar Chobey, Singapore (SG)
Assigned to PRECIX PTE LTD, Singapore (SG)
Appl. No. 17/293,773
Filed by PRECIX PTE LTD, Singapore (SG)
PCT Filed Nov. 5, 2019, PCT No. PCT/SG2019/050540
§ 371(c)(1), (2) Date May 13, 2021,
PCT Pub. No. WO2020/101569, PCT Pub. Date May 22, 2020.
Claims priority of application No. 10201810156P (SG), filed on Nov. 14, 2018.
Prior Publication US 2022/0000395 A1, Jan. 6, 2022
Int. Cl. A61B 5/11 (2006.01); A61B 5/00 (2006.01); A61B 5/389 (2021.01); A61B 8/00 (2006.01)
CPC A61B 5/1114 (2013.01) [A61B 5/1107 (2013.01); A61B 5/1127 (2013.01); A61B 5/1128 (2013.01); A61B 5/389 (2021.01); A61B 5/6812 (2013.01); A61B 8/5207 (2013.01); A61B 2505/09 (2013.01); A61B 2560/0223 (2013.01); A61B 2562/0219 (2013.01); A61B 2562/046 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A method for measuring dynamic movement of a joint, the method comprising the steps of:
identifying an axis of rotation at the joint based on preliminary profiling exercises using a pair of Inertia measurement units (IMU's), each attached to the skin on either side of said joint;
measuring relative rotation of the joint around the identified axis of rotation at the joint using the pair of IMU's;
capturing a plurality of ultrasound images of a bone proximate to a first of said IMU's by an ultrasound sensor placed onto the skin proximate to the pair of IMU's;
identifying markers on said bone;
tracking displacement of the markers; and
correlating said displacement with the relative rotation of the joint to evaluate the dynamic movement of the joint.