公开(公告)号：EP2962309A4

公开(公告)日：2016-10-19

申请号：EP14757576

申请日：2014-02-19

申请人： ACCURAY INC

发明人： ORTON MATTHEW J ,  MASTROMATTEI ROBERT ,  O'CONNELL ROBERT ,  SCHMIDT RICHARD C ,  REITZ GRAHAM

IPC分类号： G21K1/04

CPC分类号： G21K1/046

摘要： 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.