Navigated handpiece motor current signal and pose estimation based geofencing
AssigneeDepuy Ireland Unlimited Company
InventorsNicolas Demanget, Daniel Girardeau-Montaut
Life of this patent
Estimating the term…
Abstract
A geofencing system for a surgical handpiece with a cutting surface, including: a motion tracking system configured to track a location of the surgical handpiece; and an event detector configured to: receive a current measurement signal indicating a current usage of the surgical handpiece; receive motion information regarding the surgical handpiece from the motion tracking system; determine if the cutting surface has exited a second surface of a bone opposite a first surface where the cutting surface entered the bone based upon the current measurement signal and the motion information; and stop the surgical handpiece when it is determined that the cutting surface has exited the second surface of the bone.
Claims16
A geofencing system for a surgical handpiece with a cutting surface, comprising:
- a motion tracking system configured to track a location of the surgical handpiece including a motor;
- and
- an event detector configured to:
- receive a motor current measurement signal indicating a motor current usage of the motor of the surgical handpiece;
- receive motion information regarding the surgical handpiece from the motion tracking system;
- determine if the cutting surface has exited a second surface of a bone opposite a first surface where the cutting surface entered the bone based upon the motor current measurement signal and the motion information;
- stop the surgical handpiece when it is determined that the cutting surface has exited the second surface of the bone;
- determine whether the motor current usage has increased and the cutting surface is moving backward out of the bone;
- and
- generate an alert when it is determined that the motor current usage has increased and the cutting surface is moving backward out of the bone.
A method of geofencing a surgical handpiece with a cutting surface, comprising:
- receiving a motor current measurement signal indicating a current usage of a motor of the surgical handpiece;
- receiving motion information regarding the surgical handpiece from a motion tracking system;
- determining if the cutting surface has exited a second surface of a bone opposite a first surface where the cutting surface entered the bone based upon the motor current measurement signal and the motion information;
- stopping the surgical handpiece when it is determined that the cutting surface has exited the second surface of the bone;
- determining whether the motor current usage has increased and the cutting surface is moving backward out of the bone;
- and
- generating an alert when it is determined that the motor current usage has increased and the cutting surface is moving backward out of the bone.
A geofencing system for a surgical handpiece including a motor and a cutting surface, comprising:
- a motion tracking system configured to track a location of the surgical handpiece;
- and
- an event detector configured to:
- receive a motor current measurement signal indicating a motor current usage of the motor;
- receive motion information regarding the surgical handpiece from the motion tracking system;
- determine whether the motor current usage has increased and the cutting surface is moving backward out of a bone;
- and
- generating an alert responsive to determining that the motor current has increased and the cutting surface is moving backward out of the bone.
Dependencies are inferred from the claim text.