System and method for registration of multiple navigation systems to a common coordinate frame
US9901303B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 14, 2011 |
| Grant date | Feb 27, 2018 |
| Priority date | — |
| Expiry date | Jan 30, 2032 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2090/3995
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method of registering two or more localization systems utilizing unique coordinate frames A and B to a common coordinate frames includes measuring position information for one or more reference locations r in each coordinate frame (e.g., Ar and Br). For each reference location, a fiducial grouping is created from the respective position measurements (e.g., (Ar, Br)). The fiducial groupings are used to generate a mapping function ƒ that transforms position measurements expressed relative to the second coordinate frame B to the first coordinate frame A. The mapping function ƒ is defined such that a distance between ƒ(Br) and Ar is about zero for each reference location r. Each localization system may also measure position information for a respective fixed reference localization element. Divergence between these fixed reference localization elements in the common coordinate system may be used to monitor, signal, and correct for anomalies such as dislodgement and drift.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.