US 12,279,919 B2
Tracker for a surgical navigation system
Fadi Ghanam, Schallstadt (DE); and Christopher Özbek, Berlin (DE)
Assigned to Stryker European Operations Limited, Carrigtwohill (IE)
Filed by Stryker European Holdings I, LLC, Kalamazoo, MI (US); and Scopis GmbH, Berlin (DE)
Filed on May 13, 2020, as Appl. No. 15/930,508.
Claims priority of application No. 19174704 (EP), filed on May 15, 2019.
Prior Publication US 2020/0360106 A1, Nov. 19, 2020
Int. Cl. A61B 90/00 (2016.01); A61B 10/02 (2006.01); A61B 34/20 (2016.01)
CPC A61B 90/39 (2016.02) [A61B 10/0233 (2013.01); A61B 34/20 (2016.02); A61B 2034/2055 (2016.02); A61B 2034/2072 (2016.02); A61B 2090/3937 (2016.02); A61B 2090/3945 (2016.02); A61B 2090/3983 (2016.02)] 14 Claims
OG exemplary drawing
 
1. A surgical system comprising:
a surgical tool defining a tool longitudinal axis;
a tracker comprising:
a plurality of markers; and
a sleeve configured to releasably be attached to a surgical tool and having a proximal longitudinal end and a distal longitudinal end, wherein the sleeve comprises a through-opening configured for slidably receiving the surgical tool such that the surgical tool extends past the proximal and distal longitudinal ends, the through-opening defining a longitudinal axis, mounting posts or wings each having a proximal end directly coupled to the sleeve and a distal end directly coupled to one of the plurality of the markers,
wherein each of the plurality of markers are directly coupled to each of the mounting posts or wings so as to be axisymmetrically arranged with respect to the tool longitudinal axis when the surgical tool is received within the through-opening such that the mounting posts or wings extend in a direction substantially perpendicular to the longitudinal axis of the sleeve and at least two of the plurality of markers are arranged on a common plane that extends through the tool longitudinal axis,
wherein each of the plurality of markers is laterally arranged at a distance from the longitudinal axis of the sleeve and from the tool longitudinal axis when the surgical tool is received within the through-opening.