US 12,426,897 B2
Calibration and adjustment determination of a surgical handpiece system
Trevor Jonathan Lambert, Portage, MI (US); Adam Simon, Richland, MI (US); Brendan Schneider, Portage, MI (US); and Rahul Sharma, Gurgaon (IN)
Assigned to Stryker Corporation, Portage, MI (US)
Appl. No. 17/290,536
Filed by Stryker Corporation, Kalamazoo, MI (US)
PCT Filed Nov. 1, 2019, PCT No. PCT/US2019/059463
§ 371(c)(1), (2) Date Apr. 30, 2021,
PCT Pub. No. WO2020/092951, PCT Pub. Date May 7, 2020.
Claims priority of provisional application 62/901,878, filed on Sep. 18, 2019.
Claims priority of provisional application 62/754,944, filed on Nov. 2, 2018.
Prior Publication US 2021/0378684 A1, Dec. 9, 2021
Int. Cl. A61B 17/16 (2006.01); A61B 17/00 (2006.01)
CPC A61B 17/1622 (2013.01) [A61B 17/1633 (2013.01); A61B 2017/00075 (2013.01); A61B 2017/00725 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A surgical handpiece system to determine a suitable screw length for bone fixation with a bone plate that compensates an initial screw length value based on orientation of the surgical handpiece system during a drilling process, said surgical handpiece system comprising:
a surgical handpiece assembly comprising:
a handpiece housing,
a motor disposed within the handpiece housing and configured to generate torque,
a depth measurement extension movably coupled to the handpiece housing, and wherein the depth measurement extension defines a measurement axis, with the depth measurement extension movable by a user between a reference orientation where the measurement axis is aligned with a reference axis extending through a hole defined by the bone plate and a drilling orientation where the measurement axis of the depth measurement extension is at an oblique drilling angle relative to the reference axis, and
a sensor configured to generate an orientation signal responsive to orientation of the depth measurement extension;
a drill bit configured to be coupled to and receive torque from the motor of the surgical handpiece assembly; and
a processor configured to receive the signals from the sensor and determine the suitable screw length for bone fixation based on signals from the sensor,
wherein the processor is configured to:
(i) receive the orientation signal from the sensor of the depth measurement extension at the drilling orientation,
(ii) determine the drilling angle of the depth measurement extension based on the orientation signal from the sensor,
(iii) determine a compensation length responsive to the drilling angle, and
(iv) determine a suitable screw length for bone fixation based on the compensation length.