US 12,334,230 B2
Multi-leaf collimator and driving system
Jian Zhang, Shanghai (CN); Xiaolong Liu, Shanghai (CN); Xiao Fang, Shanghai (CN); Hui Zhou, Shanghai (CN); Hui Yin, Shanghai (CN); Xu Chao, Shanghai (CN); and Jian Liu, Shanghai (CN)
Assigned to SHANGHAI UNITED IMAGING HEALTHCARE CO., LTD., Shanghai (CN)
Filed by SHANGHAI UNITED IMAGING HEALTHCARE CO., LTD., Shanghai (CN)
Filed on May 23, 2022, as Appl. No. 17/664,646.
Application 17/664,646 is a continuation of application No. 16/713,678, filed on Dec. 13, 2019, granted, now 11,342,093.
Application 16/713,678 is a continuation of application No. 15/313,960, granted, now 10,510,456, issued on Dec. 17, 2019, previously published as PCT/CN2016/098620, filed on Sep. 9, 2016.
Claims priority of application No. 201520698943.6 (CN), filed on Sep. 10, 2015; application No. 201520699659.0 (CN), filed on Sep. 10, 2015; application No. 201510581866.0 (CN), filed on Sep. 14, 2015; and application No. 201510657060.5 (CN), filed on Oct. 12, 2015.
Prior Publication US 2022/0285041 A1, Sep. 8, 2022
Int. Cl. G21K 1/04 (2006.01); A61B 6/06 (2006.01); A61N 5/10 (2006.01); G21K 1/02 (2006.01)
CPC G21K 1/046 (2013.01) [A61B 6/06 (2013.01); A61N 5/1045 (2013.01); G21K 1/04 (2013.01); G01N 2223/316 (2013.01); G21K 1/02 (2013.01); H01J 2237/045 (2013.01); H01J 2237/0455 (2013.01); H01J 2237/0456 (2013.01); H01J 2237/0458 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A collimator system comprising a plurality of collimator units, wherein each of the plurality of collimator units includes:
a leaf;
a driving piece; and
a transmission piece, wherein
the leaf is connected to the driving piece through the transmission piece;
the transmission piece includes a transmission shaft and a sleeve, wherein the transmission shaft and the sleeve are flexible and bent such that the driving piece is positioned away from a path of movement of the leaf and a relative location of the driving piece from the leaf can be adjusted, and the sleeve includes an extension spring;
the transmission shaft passes through a hollow structure of the extension spring and can slide inside the extension spring in a process of driving the leaf; and
the driving piece is configured to drive the leaf to move by driving a movement of the transmission shaft.