Young Hoon Ji,Hai Jo Jung,Kum Bae Kim,Mun Sik Choi,Seung Woo Park
申请号：
US13582297
公开号：
US08917816B2
申请日:
2011.03.03
申请国别(地区):
US
年份:
2014
代理人:
摘要：
A multi-leaf collimator device for radiotherapy, including: a frame that has a box shape and has through-holes formed in top and bottom surfaces thereof a plurality of collimators that are received in the frame, wherein each of the collimators includes a rack gear formed on the top surface of the collimator, the collimators are symmetrically arranged in a left-right direction about a central portion of the frame, and are slidably provided on the frame and a motion driving unit that includes a pinion gear that is formed to be detachable from the rack gear formed on the top surface of the collimator, and is provided on the frame to move the pinion gear in a front-back direction of the frame and an up-down direction of the frame.
