Patent ID: 11896317
Assignee: MAZOR ROBOTICS LTD.
Field: Medical technology (Instruments)
Classification: CPC A  G | IPC A  G

Claim 17:
18. A surgical triangulation system comprising:
a plurality of microphones configured to be installed in fixed locations about an operating room;
an emitter configured to be secured to an internal anatomical feature of a patient or an implant, the emitter comprising:
a speaker; and
a power source;
at least one processor; and
a memory storing instructions for execution by the at least one processor that, when executed, cause the at least one processor to:
receive a surgical plan comprising information about a portion of the patient's anatomy;
receive a model of the portion of the patient's anatomy, the model being generated from one or more preoperative images that include the portion of the patient's anatomy;
calculate, based on the model, a predicted speed of sound through at least a segment of the portion of the patient's anatomy by:
determining, using the model, which materials lie along the segment;
measuring, within the model, a thickness of each material that lies along the segment;
determining a speed of sound through each material that lies along the segment; and
calculating the predicted speed of sound based on the thickness of each material and the speed of sound of each material that lies along the segment;

receive, from the plurality of microphones, sound information about a sound detected by the plurality of microphones and generated by the speaker; and
calculate, based on the surgical plan, the predicted speed of sound, the sound information, and information about the fixed locations of the plurality of microphones, a position of the emitter.