Optical surface tracking for medical simulation
US11810473B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 29, 2020 |
| Grant date | Nov 7, 2023 |
| Priority date | — |
| Expiry date | Apr 10, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/10028
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A system and method of training how to use a medical device using an instrument such as a mock ultrasound probe or syringe to be tracked in 3D space with six degrees of freedom using an internal optical camera, a light source (e.g. infrared LEDs), and a display of markers arranged on a surface. By extracting corner information for each marker, a 3D transformation can be established, allowing the system to know the instrument's position and orientation in 3D space relative to that marker. Each marker also encodes a numerical value corresponding to its predetermined position and orientation on the surface, allowing the instrument to determine its own position and orientation relative to the surface. Thus, as long as the instrument is able to see at least one marker on an optical surface, the system will know its full 3D position and orientation relative to the whole optical surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.