Method and system for propelling and controlling displacement of a microrobot in a blood vessel
US7962194B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Apr 15, 2003 |
| Grant date | Jun 14, 2011 |
| Priority date | — |
| Expiry date | Sep 6, 2025 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B34/73
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A magnetic resonance imager (MRI) controllably propels at least one magnetic field responsive body within a subject. The MRI comprises a bore magnet producing an intense magnetic field sufficient to magnetically saturate the magnetic field responsive body. A magnetic field gradient generator is configured to apply variable magnetic gradients to at least a portion of the subject containing the magnetically-saturated body. A controller instructs the magnetic field gradient generator to acquire image data of the magnetically-saturated body within the subject and to apply a calculated magnetic gradient that will propel the magnetically-saturated body towards a target location in the subject. A tracking unit of the MRI provides position feedback information of the magnetically-saturated body within the subject.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.