Fiducial marker devices, tools, and methods
US7643867B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 17, 2003 |
| Grant date | Jan 5, 2010 |
| Priority date | — |
| Expiry date | Jun 4, 2025 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2090/3995
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
This document discusses, among other things, fiducial marker devices, tools, and methods. One example illustrates a combined computed tomography (CT) imagable fiducial locator head, an integral bone screw, and an integral divot for receiving a positioning wand of an image-guided surgical (IGS) workstation. A further example includes a fluid/gel-absorbing coating or cover into which a magnetic resonance (MR) imagable fluid is introduced, thereby permitting both CT and MR imaging. Protective caps and collars may be used to protect the fiducial marker from mechanical impact and/or to guide the fiducial marker during affixation. A bull's-eye or other template is used to select a center of a substantially spherical fiducial marker head on an image, such as for use during patient registration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.