Electromagnetically actuated multi-leaf collimator
US9443633B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 19, 2014 |
| Grant date | Sep 13, 2016 |
| Priority date | — |
| Expiry date | Feb 19, 2034 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N5/1045
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A multi-leaf collimator with electromagnetically actuated leaves. The multi-leaf collimator includes a plurality of leaves, a leaf guide configured to support the plurality of leaves, and a plurality of magnets. Each leaf includes a blocking portion that is radio opaque, a drive portion connected to the blocking portion, and a coil embedded in the drive portion. The coil is operatively connected to an electrical current source to generate a first magnetic field. The first magnetic field interacts with the magnetic field generated by the magnet to thereby move the leave to a desired state. The leaves have the capability of moving at speeds of 50 cm/s up to and higher than 1 m/s.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.