US 11,986,253 B2
Movable tracker system
Cedric Corpa De La Fuente, Pittsburgh, PA (US)
Assigned to Blue Belt Technologies, Inc., Memphis, TN (US)
Appl. No. 16/470,903
Filed by Blue Belt Technologies, Inc., Pittsburgh, PA (US)
PCT Filed Oct. 28, 2016, PCT No. PCT/US2016/059595
§ 371(c)(1), (2) Date Jun. 18, 2019,
PCT Pub. No. WO2017/075545, PCT Pub. Date May 4, 2017.
Claims priority of provisional application 62/247,879, filed on Oct. 29, 2015.
Prior Publication US 2020/0085505 A1, Mar. 19, 2020
Int. Cl. A61B 34/00 (2016.01); A61B 34/20 (2016.01); A61B 90/00 (2016.01)
CPC A61B 34/20 (2016.02) [A61B 2034/2051 (2016.02); A61B 2034/2055 (2016.02); A61B 2034/2065 (2016.02); A61B 2034/2072 (2016.02); A61B 2034/2074 (2016.02); A61B 2090/363 (2016.02); A61B 2090/3916 (2016.02)] 10 Claims
OG exemplary drawing
 
3. A method of reducing error in a navigated surgical system, the method comprising:
affixing at least one marked pin to a bone to be tracked, the marked pin having an optical grid-based tracking pattern varying in both a longitudinal direction and a latitudinal direction;
disposing a tracking sleeve onto each marked pin, the tracking sleeve including an internal tracking sensor and a plurality of external location trackers;
detecting position information from the internal tracking sensor by detecting grid lines of varying density, in at least one of the longitudinal direction and the latitudinal direction;
detecting a position of the tracking sleeve from the plurality of external location trackers; and
determining, based on the position information, whether any relative movement between the position of the tracking sleeve and the bone has occurred.