US 11,839,434 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 Jun. 26, 2019, as Appl. No. 16/453,710.
Prior Publication US 2020/0405400 A1, Dec. 31, 2020
Int. Cl. A61B 34/20 (2016.01); A61B 34/00 (2016.01); A61B 34/30 (2016.01); G16H 40/40 (2018.01); A61B 17/16 (2006.01); A61B 17/70 (2006.01)
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)] 14 Claims
OG exemplary drawing
 
1. An instrument calibration system, comprising:
a surgical instrument designed to meet a set of manufacturing parameters and having an elongate shaft with a proximal end and a distal end, the distal end having a distal-most 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 to calibrate the surgical instrument,
compare the mapped coordinates of the orientation element to at least one predetermined reference coordinate based on the set of manufacturing parameters,
calculate a deviation of the mapped coordinates of the orientation element from the at least one predetermined reference coordinate, and
modify a virtual representation of the surgical instrument on a display based on the calculated deviation;
wherein the monitoring system is configured to determine an initial orientation of the orientation element with respect to the surgical instrument while the orientation element remains in a fixed position relative to the surgical instrument; and
wherein the monitoring system is configured to determine an actual orientation of the surgical instrument while the orientation element on the proximal end thereof is moved to one of a plurality of second positions different than the initial position on the surgical instrument without requiring recalibration of the surgical instrument.