US 12,402,957 B2
Instrument calibration
Steffen Schumann, Zofingen (CH); and Marc Puls, Thörigen (CH)
Assigned to DePuy Synthes Products, Inc., Raynham, MA (US)
Filed by DePuy Synthes Products, Inc., Raynham, MA (US)
Filed on Oct. 17, 2023, as Appl. No. 18/488,528.
Application 18/488,528 is a continuation of application No. 16/453,710, filed on Jun. 26, 2019, granted, now 11,839,434.
Prior Publication US 2024/0041538 A1, Feb. 8, 2024
Int. Cl. A61B 34/20 (2016.01); A61B 17/16 (2006.01); A61B 17/70 (2006.01); A61B 34/00 (2016.01); A61B 34/30 (2016.01); G16H 40/40 (2018.01)
CPC A61B 34/20 (2016.02) [A61B 17/1671 (2013.01); A61B 17/7082 (2013.01); A61B 34/25 (2016.02); A61B 34/30 (2016.02); G16H 40/40 (2018.01); A61B 2034/2048 (2016.02); A61B 2034/2051 (2016.02); A61B 2034/2055 (2016.02); A61B 2034/2072 (2016.02); A61B 2034/254 (2016.02); A61B 2560/0238 (2013.01)] 12 Claims
OG exemplary drawing
 
1. An instrument calibration system, comprising:
a surgical instrument having an elongate shaft with a proximal end and a distal end, the distal end having a distal tip, the proximal end having an orientation element fixed in an initial position thereon;
a calibration instrument having a pivot point thereon configured to receive the distal-most tip of the surgical instrument for pivoting thereabout, the calibration instrument having a predefined geometric structure and a calibration reference element attached thereto; and
a monitoring system configured to map coordinates of the orientation element relative to the calibration reference element as the surgical instrument is moved with the distal-most tip of the surgical instrument positioned at the pivot point of the calibration instrument, the monitoring system being configured to calculate a deviation of the mapped coordinates of the orientation element from a plurality of corresponding reference coordinates of a predefined surgical instrument according to manufacturing parameters and having a predefined distal tip, and being configured to modify, based on the calculated deviation, a virtual representation of the predefined surgical instrument on a display to depict a virtual representation of the surgical instrument, wherein the mapped coordinates of the orientation element and the plurality of corresponding reference coordinates are characterized by respective first and second semi-spheres, and wherein the calculated deviation corresponds to a difference in form between the first and second semi-spheres.