US 12,128,251 B2
Multi-leaf collimator and radiation therapy device
Jian Liu, Shanghai (CN); Kun Yang, Shanghai (CN); Jian Zhang, Shanghai (CN); Yanfang Liu, Shanghai (CN); and Cheng Ni, 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 16, 2022, as Appl. No. 17/663,661.
Application 17/663,661 is a continuation of application No. 16/801,140, filed on Feb. 25, 2020, granted, now 11,331,517.
Claims priority of application No. 201910407804.6 (CN), filed on May 15, 2019.
Prior Publication US 2022/0273965 A1, Sep. 1, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. A61N 5/10 (2006.01); G21K 1/04 (2006.01)
CPC A61N 5/1045 (2013.01) [A61N 5/1036 (2013.01); A61N 5/1048 (2013.01); A61N 5/1081 (2013.01); G21K 1/046 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A multi-leaf collimator, comprising:
a set of leaves installed in a cavity, each leaf of the set of leaves having a length along a first direction and being movable along the first direction, wherein
the set of leaves are arranged along a second direction, the second direction being different from the first direction; and
a length of a target leaf of the set of leaves is different from a length of a reference leaf of the set of leaves.