Optical tracking tool for navigating surgery
US10925678B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 25, 2016 |
| Grant date | Feb 23, 2021 |
| Priority date | — |
| Expiry date | Feb 24, 2037 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2090/3983
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Provided is an optical tracking tool for navigating a surgery, comprising a mounting base. The mounting base is provided with two to six supporting faces thereon. Two or four reflective balls are arranged on each of the supporting faces. A positioning surface is formed by the four reflective balls located on the same supporting face or the four reflective balls respectively located on two adjacent supporting faces. An included angle between surface normal vectors of two adjacent positioning surfaces is 90°-140°. As compared with a tracking tool having a single positioning surface formed by four reflective balls in the prior art, the optical tracking tool can considerably broaden an effective tracking range of a system, thereby improving system accuracy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.