Bone tracking with a gyroscope sensor in computer-assisted surgery
US9597156B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 30, 2010 |
| Grant date | Mar 21, 2017 |
| Priority date | — |
| Expiry date | May 1, 2032 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2090/3983
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A system tracks an object in computer-assisted surgery. The system comprises a sensor unit secured to the femur. Gyroscopes on the sensor unit produce readings related to orientation data about three axes of rotation. A tracking unit receives the gyroscope readings. An axis calibrator on the tracking unit comprises a calculator for adding at least part of the gyroscope readings for specific movements of the object about a desired axis. An axis normalizer on the tracking unit determines an orientation of the desired axis with respect to the sensor unit from the added gyroscope readings. A tracking processor tracks the desired axis from the gyroscope readings. An interface displays orientation data for the object from a tracking of the desired axis. A method for tracking an object with a gyroscope sensor unit is also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.