公开(公告)号：US20190282830A1

公开(公告)日：2019-09-19

申请号：US16462956

申请日：2017-11-28

Applicant: HITACHI, LTD.

Inventor： Satoshi ARAI ,  Hiroaki FURUICHI ,  Jun-ichi HIRAI ,  Osamu CHIBA ,  Tomoki MURATA

IPC: A61N5/10 ,  B29C64/124 ,  B29C64/153

Abstract: A ridge filter 100 provided in a particle therapy system includes a repeating structure body 101 having a plurality of extending parts 101c extending along the incident direction P of a proton beam 204, and a bottom plate 102 provided on the lower face 101b side opposite to the incident side of the proton beam 204 of the repeating structure body 101. In addition, the repeating structure body 101 and the bottom plate 102 are integrally formed by a molding method, and each of the repeating structure body 101 and the bottom plate 102 is formed of a laminate of resin.